Apache HTTP 服务器版本 2.4

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# 指令快速索引

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指令快速索引显示指令的用法，默认值，状态和上下文。要获得更多信息，请参见 描述指令的术语。

第一列给出指令的名称与用法。第二列显示指令的默认值(如果有的话)。 如果因为默认值太长而被截断显示，会在最后一个字符之后显示字符 “+”。

第三列显示允许此指令的上下文，第四列显示指令的状态。

A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | Q | R | S | T | U | V | W | X

s | 服务器配置
v | 虚拟主机
d | 目录
h | .htaccess

C | 核心
M | MPM
B | 基础
E | 扩展
X | 实验

AcceptFilter protocol accept_filter |  | s | C
Configures optimizations for a Protocol's Listener Sockets
AcceptPathInfo On|Off|Default | Default | svdh | C
Resources accept trailing pathname information
AccessFileName filename [filename] ... | .htaccess | sv | C
Name of the distributed configuration file
Action action-type cgi-script [virtual] |  | svdh | B
Activates a CGI script for a particular handler or content-type
AddAlt string file [file] ... |  | svdh | B
Alternate text to display for a file, instead of an icon selected by filename
AddAltByEncoding string MIME-encoding [MIME-encoding] ... |  | svdh | B
Alternate text to display for a file instead of an icon selected by MIME-encoding
AddAltByType string MIME-type [MIME-type] ... |  | svdh | B
Alternate text to display for a file, instead of an icon selected by MIME content-type
AddCharset charset extension [extension] ... |  | svdh | B
Maps the given filename extensions to the specified content charset
AddDefaultCharset On|Off|charset | Off | svdh | C
Default charset parameter to be added when a response content-type is `text/plain` or `text/html`
AddDescription string file [file] ... |  | svdh | B
Description to display for a file
AddEncoding encoding extension [extension] ... |  | svdh | B
Maps the given filename extensions to the specified encoding type
AddHandler handler-name extension [extension] ... |  | svdh | B
Maps the filename extensions to the specified handler
AddIcon icon name [name] ... |  | svdh | B
Icon to display for a file selected by name
AddIconByEncoding icon MIME-encoding [MIME-encoding] ... |  | svdh | B
Icon to display next to files selected by MIME content-encoding
AddIconByType icon MIME-type [MIME-type] ... |  | svdh | B
Icon to display next to files selected by MIME content-type
AddInputFilter filter[;filter...] extension [extension] ... |  | svdh | B
Maps filename extensions to the filters that will process client requests
AddLanguage language-tag extension [extension] ... |  | svdh | B
Maps the given filename extension to the specified content language
AddModuleInfo module-name string |  | sv | E
Adds additional information to the module information displayed by the server-info handler
AddOutputFilter filter[;filter...] extension [extension] ... |  | svdh | B
Maps filename extensions to the filters that will process responses from the server
AddOutputFilterByType filter[;filter...] media-type [media-type] ... |  | svdh | B
assigns an output filter to a particular media-type
AddType media-type extension [extension] ... |  | svdh | B
Maps the given filename extensions onto the specified content type
Alias [URL-path] file-path|directory-path |  | svd | B
Maps URLs to filesystem locations
AliasMatch regex file-path|directory-path |  | sv | B
Maps URLs to filesystem locations using regular expressions
AliasPreservePath OFF|ON | OFF | svd | B
Map the full path after the alias in a location.
Allow from all|host|env=[!]env-variable [host|env=[!]env-variable] ... |  | dh | E
Controls which hosts can access an area of the server
AllowCONNECT port[-port] [port[-port]] ... | 443 563 | sv | E
Ports that are allowed to `CONNECT` through the proxy
AllowEncodedSlashes On|Off|NoDecode | Off | sv | C
Determines whether encoded path separators in URLs are allowed to be passed through
AllowMethods reset|HTTP-method [HTTP-method]... | reset | d | X
Restrict access to the listed HTTP methods
AllowOverride All|None|directive-type [directive-type] ... | None (2.3.9 and lat + | d | C
Types of directives that are allowed in `.htaccess` files
AllowOverrideList None|directive [directive-type] ... | None | d | C
Individual directives that are allowed in `.htaccess` files
Anonymous user [user] ... |  | dh | E
Specifies userIDs that are allowed access without password verification
Anonymous_LogEmail On|Off | On | dh | E
Sets whether the password entered will be logged in the error log
Anonymous_MustGiveEmail On|Off | On | dh | E
Specifies whether blank passwords are allowed
Anonymous_NoUserID On|Off | Off | dh | E
Sets whether the userID field may be empty
Anonymous_VerifyEmail On|Off | Off | dh | E
Sets whether to check the password field for a correctly formatted email address
AsyncRequestWorkerFactor factor |  | s | M
Limit concurrent connections per process
AuthBasicAuthoritative On|Off | On | dh | B
Sets whether authorization and authentication are passed to lower level modules
AuthBasicFake off|username [password] |  | dh | B
Fake basic authentication using the given expressions for username and password
AuthBasicProvider provider-name [provider-name] ... | file | dh | B
Sets the authentication provider(s) for this location
AuthBasicUseDigestAlgorithm MD5|Off | Off | dh | B
Check passwords against the authentication providers as if Digest Authentication was in force instead of Basic Authentication.
AuthDBDUserPWQuery query |  | d | E
SQL query to look up a password for a user
AuthDBDUserRealmQuery query |  | d | E
SQL query to look up a password hash for a user and realm.
AuthDBMGroupFile file-path |  | dh | E
Sets the name of the database file containing the list of user groups for authorization
AuthDBMType default|SDBM|GDBM|NDBM|DB | default | dh | E
Sets the type of database file that is used to store passwords
AuthDBMUserFile file-path |  | dh | E
Sets the name of a database file containing the list of users and passwords for authentication
AuthDigestAlgorithm MD5|MD5-sess | MD5 | dh | E
Selects the algorithm used to calculate the challenge and response hashes in digest authentication
AuthDigestDomain URI [URI] ... |  | dh | E
URIs that are in the same protection space for digest authentication
AuthDigestNonceLifetime seconds | 300 | dh | E
How long the server nonce is valid
AuthDigestProvider provider-name [provider-name] ... | file | dh | E
Sets the authentication provider(s) for this location
AuthDigestQop none|auth|auth-int [auth|auth-int] | auth | dh | E
Determines the quality-of-protection to use in digest authentication
AuthDigestShmemSize size | 1000 | s | E
The amount of shared memory to allocate for keeping track of clients
AuthFormAuthoritative On|Off | On | dh | B
Sets whether authorization and authentication are passed to lower level modules
AuthFormBody fieldname | httpd_body | d | B
The name of a form field carrying the body of the request to attempt on successful login
AuthFormDisableNoStore On|Off | Off | d | B
Disable the CacheControl no-store header on the login page
AuthFormFakeBasicAuth On|Off | Off | d | B
Fake a Basic Authentication header
AuthFormLocation fieldname | httpd_location | d | B
The name of a form field carrying a URL to redirect to on successful login
AuthFormLoginRequiredLocation url |  | d | B
The URL of the page to be redirected to should login be required
AuthFormLoginSuccessLocation url |  | d | B
The URL of the page to be redirected to should login be successful
AuthFormLogoutLocation uri |  | d | B
The URL to redirect to after a user has logged out
AuthFormMethod fieldname | httpd_method | d | B
The name of a form field carrying the method of the request to attempt on successful login
AuthFormMimetype fieldname | httpd_mimetype | d | B
The name of a form field carrying the mimetype of the body of the request to attempt on successful login
AuthFormPassword fieldname | httpd_password | d | B
The name of a form field carrying the login password
AuthFormProvider provider-name [provider-name] ... | file | dh | B
Sets the authentication provider(s) for this location
AuthFormSitePassphrase secret |  | d | B
Bypass authentication checks for high traffic sites
AuthFormSize size | 8192 | d | B
The largest size of the form in bytes that will be parsed for the login details
AuthFormUsername fieldname | httpd_username | d | B
The name of a form field carrying the login username
AuthGroupFile file-path |  | dh | B
Sets the name of a text file containing the list of user groups for authorization
AuthLDAPAuthorizePrefix prefix | AUTHORIZE_ | dh | E
Specifies the prefix for environment variables set during authorization
AuthLDAPBindAuthoritative off|on | on | dh | E
Determines if other authentication providers are used when a user can be mapped to a DN but the server cannot successfully bind with the user's credentials.
AuthLDAPBindDN distinguished-name |  | dh | E
Optional DN to use in binding to the LDAP server
AuthLDAPBindPassword password |  | dh | E
Password used in conjunction with the bind DN
AuthLDAPCharsetConfig file-path |  | s | E
Language to charset conversion configuration file
AuthLDAPCompareAsUser on|off | off | dh | E
Use the authenticated user's credentials to perform authorization comparisons
AuthLDAPCompareDNOnServer on|off | on | dh | E
Use the LDAP server to compare the DNs
AuthLDAPDereferenceAliases never|searching|finding|always | always | dh | E
When will the module de-reference aliases
AuthLDAPGroupAttribute attribute | member uniqueMember + | dh | E
LDAP attributes used to identify the user members of groups.
AuthLDAPGroupAttributeIsDN on|off | on | dh | E
Use the DN of the client username when checking for group membership
AuthLDAPInitialBindAsUser off|on | off | dh | E
Determines if the server does the initial DN lookup using the basic authentication users' own username, instead of anonymously or with hard-coded credentials for the server
AuthLDAPInitialBindPattern regex substitution | (.*) $1 (remote use + | dh | E
Specifies the transformation of the basic authentication username to be used when binding to the LDAP server to perform a DN lookup
AuthLDAPMaxSubGroupDepth Number | 10 | dh | E
Specifies the maximum sub-group nesting depth that will be evaluated before the user search is discontinued.
AuthLDAPRemoteUserAttribute uid |  | dh | E
Use the value of the attribute returned during the user query to set the REMOTE_USER environment variable
AuthLDAPRemoteUserIsDN on|off | off | dh | E
Use the DN of the client username to set the REMOTE_USER environment variable
AuthLDAPSearchAsUser on|off | off | dh | E
Use the authenticated user's credentials to perform authorization searches
AuthLDAPSubGroupAttribute attribute | member uniqueMember + | dh | E
Specifies the attribute labels, one value per directive line, used to distinguish the members of the current group that are groups.
AuthLDAPSubGroupClass LdapObjectClass | groupOfNames groupO + | dh | E
Specifies which LDAP objectClass values identify directory objects that are groups during sub-group processing.
AuthLDAPURL url [NONE|SSL|TLS|STARTTLS] |  | dh | E
URL specifying the LDAP search parameters
AuthMerging Off | And | Or | Off | dh | B
Controls the manner in which each configuration section's authorization logic is combined with that of preceding configuration sections.
AuthName auth-domain |  | dh | B
Authorization realm for use in HTTP authentication
AuthnCacheContext directory|server|custom-string | directory | d | B
Specify a context string for use in the cache key
AuthnCacheEnable |  | s | B
Enable Authn caching configured anywhere
AuthnCacheProvideFor authn-provider [...] |  | dh | B
Specify which authn provider(s) to cache for
AuthnCacheSOCache provider-name[:provider-args] |  | s | B
Select socache backend provider to use
AuthnCacheTimeout timeout (seconds) | 300 (5 minutes) | dh | B
Set a timeout for cache entries
<AuthnProviderAlias baseProvider Alias> ... </AuthnProviderAlias> |  | s | B
Enclose a group of directives that represent an extension of a base authentication provider and referenced by the specified alias
AuthnzFcgiCheckAuthnProvider provider-name|`None` option ... |  | d | E
Enables a FastCGI application to handle the check_authn authentication hook.
AuthnzFcgiDefineProvider type provider-name backend-address |  | s | E
Defines a FastCGI application as a provider for authentication and/or authorization
AuthType None|Basic|Digest|Form |  | dh | B
Type of user authentication
AuthUserFile file-path |  | dh | B
Sets the name of a text file containing the list of users and passwords for authentication
AuthzDBDLoginToReferer On|Off | Off | d | E
Determines whether to redirect the Client to the Referring page on successful login or logout if a `Referer` request header is present
AuthzDBDQuery query |  | d | E
Specify the SQL Query for the required operation
AuthzDBDRedirectQuery query |  | d | E
Specify a query to look up a login page for the user
AuthzDBMType default|SDBM|GDBM|NDBM|DB | default | dh | E
Sets the type of database file that is used to store list of user groups
<AuthzProviderAlias baseProvider Alias Require-Parameters> ... </AuthzProviderAlias> |  | s | B
Enclose a group of directives that represent an extension of a base authorization provider and referenced by the specified alias
AuthzSendForbiddenOnFailure On|Off | Off | dh | B
Send '403 FORBIDDEN' instead of '401 UNAUTHORIZED' if authentication succeeds but authorization fails
BalancerGrowth # | 5 | sv | E
Number of additional Balancers that can be added Post-configuration
BalancerInherit On|Off | On | sv | E
Inherit ProxyPassed Balancers/Workers from the main server
BalancerMember [balancerurl] url [key=value [key=value ...]] |  | d | E
Add a member to a load balancing group
BalancerPersist On|Off | Off | sv | E
Attempt to persist changes made by the Balancer Manager across restarts.
BrotliAlterETag AddSuffix|NoChange|Remove | AddSuffix | sv | E
How the outgoing ETag header should be modified during compression
BrotliCompressionMaxInputBlock value |  | sv | E
Maximum input block size
BrotliCompressionQuality value | 5 | sv | E
Compression quality
BrotliCompressionWindow value | 18 | sv | E
Brotli sliding compression window size
BrotliFilterNote [type] notename |  | sv | E
Places the compression ratio in a note for logging
BrowserMatch regex [!]env-variable[=value] [[!]env-variable[=value]] ... |  | svdh | B
Sets environment variables conditional on HTTP User-Agent
BrowserMatchNoCase regex [!]env-variable[=value] [[!]env-variable[=value]] ... |  | svdh | B
Sets environment variables conditional on User-Agent without respect to case
BufferedLogs On|Off | Off | s | B
Buffer log entries in memory before writing to disk
BufferSize integer | 131072 | svdh | E
Maximum size in bytes to buffer by the buffer filter
CacheDefaultExpire seconds | 3600 (one hour) | svdh | E
The default duration to cache a document when no expiry date is specified.
CacheDetailHeader on|off | off | svdh | E
Add an X-Cache-Detail header to the response.
CacheDirLength length | 2 | sv | E
The number of characters in subdirectory names
CacheDirLevels levels | 2 | sv | E
The number of levels of subdirectories in the cache.
CacheDisable url-string | on |  | svdh | E
Disable caching of specified URLs
CacheEnable cache_type [url-string] |  | svd | E
Enable caching of specified URLs using a specified storage manager
CacheFile file-path [file-path] ... |  | s | X
Cache a list of file handles at startup time
CacheHeader on|off | off | svdh | E
Add an X-Cache header to the response.
CacheIgnoreCacheControl On|Off | Off | sv | E
Ignore request to not serve cached content to client
CacheIgnoreHeaders header-string [header-string] ... | None | sv | E
Do not store the given HTTP header(s) in the cache.
CacheIgnoreNoLastMod On|Off | Off | svdh | E
Ignore the fact that a response has no Last Modified header.
CacheIgnoreQueryString On|Off | Off | sv | E
Ignore query string when caching
CacheIgnoreURLSessionIdentifiers identifier [identifier] ... | None | sv | E
Ignore defined session identifiers encoded in the URL when caching
CacheKeyBaseURL URL |  | sv | E
Override the base URL of reverse proxied cache keys.
CacheLastModifiedFactor float | 0.1 | svdh | E
The factor used to compute an expiry date based on the LastModified date.
CacheLock on|off | off | sv | E
Enable the thundering herd lock.
CacheLockMaxAge integer | 5 | sv | E
Set the maximum possible age of a cache lock.
CacheLockPath directory | /tmp/mod_cache-lock + | sv | E
Set the lock path directory.
CacheMaxExpire seconds | 86400 (one day) | svdh | E
The maximum time in seconds to cache a document
CacheMaxFileSize bytes | 1000000 | svdh | E
The maximum size (in bytes) of a document to be placed in the cache
CacheMinExpire seconds | 0 | svdh | E
The minimum time in seconds to cache a document
CacheMinFileSize bytes | 1 | svdh | E
The minimum size (in bytes) of a document to be placed in the cache
CacheNegotiatedDocs On|Off | Off | sv | B
Allows content-negotiated documents to be cached by proxy servers
CacheQuickHandler on|off | on | sv | E
Run the cache from the quick handler.
CacheReadSize bytes | 0 | svdh | E
The minimum size (in bytes) of the document to read and be cached before sending the data downstream
CacheReadTime milliseconds | 0 | svdh | E
The minimum time (in milliseconds) that should elapse while reading before data is sent downstream
CacheRoot directory |  | sv | E
The directory root under which cache files are stored
CacheSocache type[:args] |  | sv | E
The shared object cache implementation to use
CacheSocacheMaxSize bytes | 102400 | svdh | E
The maximum size (in bytes) of an entry to be placed in the cache
CacheSocacheMaxTime seconds | 86400 | svdh | E
The maximum time (in seconds) for a document to be placed in the cache
CacheSocacheMinTime seconds | 600 | svdh | E
The minimum time (in seconds) for a document to be placed in the cache
CacheSocacheReadSize bytes | 0 | svdh | E
The minimum size (in bytes) of the document to read and be cached before sending the data downstream
CacheSocacheReadTime milliseconds | 0 | svdh | E
The minimum time (in milliseconds) that should elapse while reading before data is sent downstream
CacheStaleOnError on|off | on | svdh | E
Serve stale content in place of 5xx responses.
CacheStoreExpired On|Off | Off | svdh | E
Attempt to cache responses that the server reports as expired
CacheStoreNoStore On|Off | Off | svdh | E
Attempt to cache requests or responses that have been marked as no-store.
CacheStorePrivate On|Off | Off | svdh | E
Attempt to cache responses that the server has marked as private
CGIDScriptTimeout time[s|ms] |  | svdh | B
The length of time to wait for more output from the CGI program
CGIMapExtension cgi-path .extension |  | dh | C
Technique for locating the interpreter for CGI scripts
CGIPassAuth On|Off | Off | dh | C
Enables passing HTTP authorization headers to scripts as CGI variables
CGIScriptTimeout time[s|ms] |  | svdh | B
The length of time to wait for more output from the CGI program
CGIVar variable rule |  | dh | C
Controls how some CGI variables are set
CharsetDefault charset |  | svdh | E
Charset to translate into
CharsetOptions option [option] ... | ImplicitAdd | svdh | E
Configures charset translation behavior
CharsetSourceEnc charset |  | svdh | E
Source charset of files
CheckBasenameMatch on|off | On | svdh | E
Also match files with differing file name extensions.
CheckCaseOnly on|off | Off | svdh | E
Limits the action of the speling module to case corrections
CheckSpelling on|off | Off | svdh | E
Enables the spelling module
ChrootDir /path/to/directory |  | s | B
Directory for apache to run chroot(8) after startup.
ContentDigest On|Off | Off | svdh | C
Enables the generation of `Content-MD5` HTTP Response headers
CookieDomain domain |  | svdh | E
The domain to which the tracking cookie applies
CookieExpires expiry-period |  | svdh | E
Expiry time for the tracking cookie
CookieHTTPOnly on|off | off | svdh | E
Adds the 'HTTPOnly' attribute to the cookie
CookieName token | Apache | svdh | E
Name of the tracking cookie
CookieSameSite None|Lax|Strict |  | svdh | E
Adds the 'SameSite' attribute to the cookie
CookieSecure on|off | off | svdh | E
Adds the 'Secure' attribute to the cookie
CookieStyle Netscape|Cookie|Cookie2|RFC2109|RFC2965 | Netscape | svdh | E
Format of the cookie header field
CookieTracking on|off | off | svdh | E
Enables tracking cookie
CoreDumpDirectory directory |  | s | M
Directory where Apache HTTP Server attempts to switch before dumping core
CustomLog file|pipe format|nickname [env=[!]environment-variable| expr=expression] |  | sv | B
Sets filename and format of log file
Dav On|Off|provider-name | Off | d | E
Enable WebDAV HTTP methods
DavBasePath root-path |  | d | E
Configure repository root path
DavDepthInfinity on|off | off | svd | E
Allow PROPFIND, Depth: Infinity requests
DavGenericLockDB file-path |  | svd | E
Location of the DAV lock database
DavLockDB file-path |  | sv | E
Location of the DAV lock database
DavLockDiscovery on|off | on | svdh | E
Enable lock discovery
DavMinTimeout seconds | 0 | svd | E
Minimum amount of time the server holds a lock on a DAV resource
DBDExptime time-in-seconds | 300 | sv | E
Keepalive time for idle connections
DBDInitSQL "SQL statement" |  | sv | E
Execute an SQL statement after connecting to a database
DBDKeep number | 2 | sv | E
Maximum sustained number of connections
DBDMax number | 10 | sv | E
Maximum number of connections
DBDMin number | 1 | sv | E
Minimum number of connections
DBDParams param1=value1[,param2=value2] |  | sv | E
Parameters for database connection
DBDPersist On|Off |  | sv | E
Whether to use persistent connections
DBDPrepareSQL "SQL statement" label |  | sv | E
Define an SQL prepared statement
DBDriver name |  | sv | E
Specify an SQL driver
DefaultIcon url-path |  | svdh | B
Icon to display for files when no specific icon is configured
DefaultLanguage language-tag |  | svdh | B
Defines a default language-tag to be sent in the Content-Language header field for all resources in the current context that have not been assigned a language-tag by some other means.
DefaultRuntimeDir directory-path | DEFAULT_REL_RUNTIME + | s | C
Base directory for the server run-time files
DefaultType media-type|none | none | svdh | C
This directive has no effect other than to emit warnings if the value is not `none`. In prior versions, DefaultType would specify a default media type to assign to response content for which no other media type configuration could be found.
Define parameter-name [parameter-value] |  | svd | C
Define a variable
DeflateAlterETag AddSuffix|NoChange|Remove | AddSuffix | sv | E
How the outgoing ETag header should be modified during compression
DeflateBufferSize value | 8096 | sv | E
Fragment size to be compressed at one time by zlib
DeflateCompressionLevel value |  | sv | E
How much compression do we apply to the output
DeflateFilterNote [type] notename |  | sv | E
Places the compression ratio in a note for logging
DeflateInflateLimitRequestBody value |  | svdh | E
Maximum size of inflated request bodies
DeflateInflateRatioBurst value | 3 | svdh | E
Maximum number of times the inflation ratio for request bodies can be crossed
DeflateInflateRatioLimit value | 200 | svdh | E
Maximum inflation ratio for request bodies
DeflateMemLevel value | 9 | sv | E
How much memory should be used by zlib for compression
DeflateWindowSize value | 15 | sv | E
Zlib compression window size
Deny from all|host|env=[!]env-variable [host|env=[!]env-variable] ... |  | dh | E
Controls which hosts are denied access to the server
<Directory directory-path> ... </Directory> |  | sv | C
Enclose a group of directives that apply only to the named file-system directory, sub-directories, and their contents.
DirectoryCheckHandler On|Off | Off | svdh | B
Toggle how this module responds when another handler is configured
DirectoryIndex disabled | local-url [local-url] ... | index.html | svdh | B
List of resources to look for when the client requests a directory
DirectoryIndexRedirect on | off | permanent | temp | seeother | 3xx-code | off | svdh | B
Configures an external redirect for directory indexes.
<DirectoryMatch regex> ... </DirectoryMatch> |  | sv | C
Enclose directives that apply to the contents of file-system directories matching a regular expression.
DirectorySlash On|Off | On | svdh | B
Toggle trailing slash redirects on or off
DocumentRoot directory-path | "/usr/local/apache/ + | sv | C
Directory that forms the main document tree visible from the web
DTracePrivileges On|Off | Off | s | X
Determines whether the privileges required by dtrace are enabled.
DumpIOInput On|Off | Off | s | E
Dump all input data to the error log
DumpIOOutput On|Off | Off | s | E
Dump all output data to the error log
<Else> ... </Else> |  | svdh | C
Contains directives that apply only if the condition of a previous `<If>` or `<ElseIf>` section is not satisfied by a request at runtime
<ElseIf expression> ... </ElseIf> |  | svdh | C
Contains directives that apply only if a condition is satisfied by a request at runtime while the condition of a previous `<If>` or `<ElseIf>` section is not satisfied
EnableExceptionHook On|Off | Off | s | M
Enables a hook that runs exception handlers after a crash
EnableMMAP On|Off | On | svdh | C
Use memory-mapping to read files during delivery
EnableSendfile On|Off | Off | svdh | C
Use the kernel sendfile support to deliver files to the client
Error message |  | svdh | C
Abort configuration parsing with a custom error message
ErrorDocument error-code document |  | svdh | C
What the server will return to the client in case of an error
ErrorLog file-path|syslog[:[facility][:tag]] | logs/error_log (Uni + | sv | C
Location where the server will log errors
ErrorLogFormat [connection|request] format |  | sv | C
Format specification for error log entries
Example |  | svdh | X
Demonstration directive to illustrate the Apache module API
ExpiresActive On|Off | Off | svdh | E
Enables generation of `Expires` headers
ExpiresByType MIME-type <code>seconds |  | svdh | E
Value of the `Expires` header configured by MIME type
ExpiresDefault <code>seconds |  | svdh | E
Default algorithm for calculating expiration time
ExtendedStatus On|Off | Off[*] | s | C
Keep track of extended status information for each request
ExtFilterDefine filtername parameters |  | s | E
Define an external filter
ExtFilterOptions option [option] ... | NoLogStderr | d | E
Configure `mod_ext_filter` options
FallbackResource disabled | local-url |  | svdh | B
Define a default URL for requests that don't map to a file
FileETag component ... | MTime Size | svdh | C
File attributes used to create the ETag HTTP response header for static files
<Files filename> ... </Files> |  | svdh | C
Contains directives that apply to matched filenames
<FilesMatch regex> ... </FilesMatch> |  | svdh | C
Contains directives that apply to regular-expression matched filenames
FilterChain [+=-@!]filter-name ... |  | svdh | B
Configure the filter chain
FilterDeclare filter-name [type] |  | svdh | B
Declare a smart filter
FilterProtocol filter-name [provider-name] proto-flags |  | svdh | B
Deal with correct HTTP protocol handling
FilterProvider filter-name provider-name expression |  | svdh | B
Register a content filter
FilterTrace filter-name level |  | svd | B
Get debug/diagnostic information from `mod_filter`
FlushMaxPipelined number | 5 | sv | C
Maximum number of pipelined responses above which they are flushed to the network
FlushMaxThreshold number-of-bytes | 65535 | sv | C
Threshold above which pending data are flushed to the network
ForceLanguagePriority None|Prefer|Fallback [Prefer|Fallback] | Prefer | svdh | B
Action to take if a single acceptable document is not found
ForceType media-type|None |  | dh | C
Forces all matching files to be served with the specified media type in the HTTP Content-Type header field
ForensicLog filename|pipe |  | sv | E
Sets filename of the forensic log
GlobalLogfile|pipe format|nickname [env=[!]environment-variable| expr=expression] |  | s | B
Sets filename and format of log file
GprofDir /tmp/gprof/|/tmp/gprof/% |  | sv | C
Directory to write gmon.out profiling data to.
GracefulShutdownTimeout seconds | 0 | s | M
Specify a timeout after which a gracefully shutdown server will exit.
Group unix-group | #-1 | s | B
Group under which the server will answer requests
H2CopyFiles on|off | off | svdh | E
Determine file handling in responses
H2Direct on|off | on for h2c, off for + | sv | E
H2 Direct Protocol Switch
H2EarlyHint name value |  | svdh | E
Add a response header to be picked up in 103 Early Hints
H2EarlyHints on|off | off | sv | E
Determine sending of 103 status codes
H2MaxDataFrameLen n | 0 | sv | E
Maximum bytes inside a single HTTP/2 DATA frame
H2MaxHeaderBlockLen n | 0 | sv | E
Maximum size of response headers
H2MaxSessionStreams n | 100 | sv | E
Maximum number of active streams per HTTP/2 session.
H2MaxWorkerIdleSeconds n | 600 | s | E
Maximum number of seconds h2 workers remain idle until shut down.
H2MaxWorkers n |  | s | E
Maximum number of worker threads to use per child process.
H2MinWorkers n |  | s | E
Minimal number of worker threads to use per child process.
H2ModernTLSOnly on|off | on | sv | E
Require HTTP/2 connections to be "modern TLS" only
H2OutputBuffering on|off | on | sv | E
Determine buffering behaviour of output
H2Padding numbits | 0 | sv | E
Determine the range of padding bytes added to payload frames
H2ProxyRequests on|off | off | sv | E
En-/Disable forward proxy requests via HTTP/2
H2Push on|off | on | svdh | E
H2 Server Push Switch
H2PushDiarySize n | 256 | sv | E
H2 Server Push Diary Size
H2PushPriority mime-type [after|before|interleaved] [weight] | * After 16 | sv | E
H2 Server Push Priority
H2PushResource [add] path [critical] |  | svdh | E
Declares resources for early pushing to the client
H2SerializeHeaders on|off | off | sv | E
Serialize Request/Response Processing Switch
H2StreamMaxMemSize bytes | 65536 | sv | E
Maximum amount of output data buffered per stream.
H2StreamTimeout time-interval[s] |  | svd | E
Maximum time waiting when sending/receiving data to stream processing
H2TLSCoolDownSecs seconds | 1 | sv | E
Configure the number of seconds of idle time on TLS before shrinking writes
H2TLSWarmUpSize amount | 1048576 | sv | E
Configure the number of bytes on TLS connection before doing max writes
H2Upgrade on|off | on for h2c, off for + | svdh | E
H2 Upgrade Protocol Switch
H2WebSockets on|off | off | sv | E
En-/Disable WebSockets via HTTP/2
H2WindowSize bytes | 65535 | sv | E
Size of Stream Window for upstream data.
Header [condition] add|append|echo|edit|edit*|merge|set|setifempty|unset|note header [[expr=]value [replacement] [early|env=[!]varname|expr=expression]] |  | svdh | E
Configure HTTP response headers
HeaderName filename |  | svdh | B
Name of the file that will be inserted at the top of the index listing
HeartbeatAddress addr:port |  | s | X
Multicast address for heartbeat packets
HeartbeatListen addr:port |  | s | X
multicast address to listen for incoming heartbeat requests
HeartbeatMaxServers number-of-servers | 10 | s | X
Specifies the maximum number of servers that will be sending heartbeat requests to this server
HeartbeatStorage file-path | logs/hb.dat | s | X
Path to store heartbeat data when using flat-file storage
HeartbeatStorage file-path | logs/hb.dat | s | X
Path to read heartbeat data
HostnameLookups On|Off|Double | Off | svd | C
Enables DNS lookups on client IP addresses
HttpProtocolOptions [Strict|Unsafe] [RegisteredMethods|LenientMethods] [Allow0.9|Require1.0] | Strict LenientMetho + | sv | C
Modify restrictions on HTTP Request Messages
IdentityCheck On|Off | Off | svd | E
Enables logging of the RFC 1413 identity of the remote user
IdentityCheckTimeout seconds | 30 | svd | E
Determines the timeout duration for ident requests
<If expression> ... </If> |  | svdh | C
Contains directives that apply only if a condition is satisfied by a request at runtime
<IfDefine [!]parameter-name> ... </IfDefine> |  | svdh | C
Encloses directives that will be processed only if a test is true at startup
<IfDirective [!]directive-name> ... </IfDirective> |  | svdh | C
Encloses directives that are processed conditional on the presence or absence of a specific directive
<IfFile [!]filename> ... </IfFile> |  | svdh | C
Encloses directives that will be processed only if file exists at startup
<IfModule [!]module-file|module-identifier> ... </IfModule> |  | svdh | C
Encloses directives that are processed conditional on the presence or absence of a specific module
<IfSection [!]section-name> ... </IfSection> |  | svdh | C
Encloses directives that are processed conditional on the presence or absence of a specific section directive
<IfVersion [[!]operator] version> ... </IfVersion> |  | svdh | E
contains version dependent configuration
ImapBase map|referer|URL | http://servername/ | svdh | B
Default `base` for imagemap files
ImapDefault error|nocontent|map|referer|URL | nocontent | svdh | B
Default action when an imagemap is called with coordinates that are not explicitly mapped
ImapMenu none|formatted|semiformatted|unformatted | formatted | svdh | B
Action if no coordinates are given when calling an imagemap
Include file-path|directory-path|wildcard |  | svd | C
Includes other configuration files from within the server configuration files
IncludeOptional file-path|directory-path|wildcard |  | svd | C
Includes other configuration files from within the server configuration files
IndexHeadInsert "markup ..." |  | svdh | B
Inserts text in the HEAD section of an index page.
IndexIgnore file [file] ... | "." | svdh | B
Adds to the list of files to hide when listing a directory
IndexIgnoreReset ON|OFF |  | svdh | B
Empties the list of files to hide when listing a directory
IndexOptions [+|-]option [[+|-]option] ... |  | svdh | B
Various configuration settings for directory indexing
IndexOrderDefault Ascending|Descending Name|Date|Size|Description | Ascending Name | svdh | B
Sets the default ordering of the directory index
IndexStyleSheet url-path |  | svdh | B
Adds a CSS stylesheet to the directory index
InputSed sed-command |  | dh | X
Sed command to filter request data (typically `POST` data)
ISAPIAppendLogToErrors on|off | off | svdh | B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the error log
ISAPIAppendLogToQuery on|off | on | svdh | B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the query field
ISAPICacheFile file-path [file-path] ... |  | sv | B
ISAPI .dll files to be loaded at startup
ISAPIFakeAsync on|off | off | svdh | B
Fake asynchronous support for ISAPI callbacks
ISAPILogNotSupported on|off | off | svdh | B
Log unsupported feature requests from ISAPI extensions
ISAPIReadAheadBuffer size | 49152 | svdh | B
Size of the Read Ahead Buffer sent to ISAPI extensions
KeepAlive On|Off | On | sv | C
Enables HTTP persistent connections
KeepAliveTimeout num[ms] | 5 | sv | C
Amount of time the server will wait for subsequent requests on a persistent connection
KeptBodySize maximum size in bytes | 0 | d | B
Keep the request body instead of discarding it up to the specified maximum size, for potential use by filters such as mod_include.
LanguagePriority MIME-lang [MIME-lang] ... |  | svdh | B
The precedence of language variants for cases where the client does not express a preference
LDAPCacheEntries number | 1024 | s | E
Maximum number of entries in the primary LDAP cache
LDAPCacheTTL seconds | 600 | s | E
Time that cached items remain valid
LDAPConnectionPoolTTL n | -1 | sv | E
Discard backend connections that have been sitting in the connection pool too long
LDAPConnectionTimeout seconds |  | s | E
Specifies the socket connection timeout in seconds
LDAPLibraryDebug 7 |  | s | E
Enable debugging in the LDAP SDK
LDAPOpCacheEntries number | 1024 | s | E
Number of entries used to cache LDAP compare operations
LDAPOpCacheTTL seconds | 600 | s | E
Time that entries in the operation cache remain valid
LDAPReferralHopLimit number |  | dh | E
The maximum number of referral hops to chase before terminating an LDAP query.
LDAPReferrals On|Off|default | On | dh | E
Enable referral chasing during queries to the LDAP server.
LDAPRetries number-of-retries | 3 | s | E
Configures the number of LDAP server retries.
LDAPRetryDelay seconds | 0 | s | E
Configures the delay between LDAP server retries.
LDAPSharedCacheFile directory-path/filename |  | s | E
Sets the shared memory cache file
LDAPSharedCacheSize bytes | 500000 | s | E
Size in bytes of the shared-memory cache
LDAPTimeout seconds | 60 | s | E
Specifies the timeout for LDAP search and bind operations, in seconds
LDAPTrustedClientCert type directory-path/filename/nickname [password] |  | dh | E
Sets the file containing or nickname referring to a per connection client certificate. Not all LDAP toolkits support per connection client certificates.
LDAPTrustedGlobalCert type directory-path/filename [password] |  | s | E
Sets the file or database containing global trusted Certificate Authority or global client certificates
LDAPTrustedMode type |  | sv | E
Specifies the SSL/TLS mode to be used when connecting to an LDAP server.
LDAPVerifyServerCert On|Off | On | s | E
Force server certificate verification
<Limit method [method] ... > ... </Limit> |  | dh | C
Restrict enclosed access controls to only certain HTTP methods
<LimitExcept method [method] ... > ... </LimitExcept> |  | dh | C
Restrict access controls to all HTTP methods except the named ones
LimitInternalRecursion number [number] | 10 | sv | C
Determine maximum number of internal redirects and nested subrequests
LimitRequestBody bytes | 1073741824 | svdh | C
Restricts the total size of the HTTP request body sent from the client
LimitRequestFields number | 100 | sv | C
Limits the number of HTTP request header fields that will be accepted from the client
LimitRequestFieldSize bytes | 8190 | sv | C
Limits the size of the HTTP request header allowed from the client
LimitRequestLine bytes | 8190 | sv | C
Limit the size of the HTTP request line that will be accepted from the client
LimitXMLRequestBody bytes | 1000000 | svdh | C
Limits the size of an XML-based request body
Listen [IP-address:]portnumber [protocol] |  | s | M
IP addresses and ports that the server listens to
ListenBackLog backlog | 511 | s | M
Maximum length of the queue of pending connections
ListenCoresBucketsRatio ratio | 0 (disabled) | s | M
Ratio between the number of CPU cores (online) and the number of listeners' buckets
LoadFile filename [filename] ... |  | sv | E
Link in the named object file or library
LoadModule module filename |  | sv | E
Links in the object file or library, and adds to the list of active modules
<Location URL-path|URL> ... </Location> |  | sv | C
Applies the enclosed directives only to matching URLs
<LocationMatch regex> ... </LocationMatch> |  | sv | C
Applies the enclosed directives only to regular-expression matching URLs
LogFormat format|nickname [nickname] | "%h %l %u %t \"%r\" + | sv | B
Describes a format for use in a log file
LogIOTrackTTFB ON|OFF | OFF | svdh | E
Enable tracking of time to first byte (TTFB)
LogLevel [module:]level [module:level] ... | warn | svd | C
Controls the verbosity of the ErrorLog
LogMessage message [hook=hook] [expr=expression] |  | d | X
Log user-defined message to error log
LuaAuthzProvider provider_name /path/to/lua/script.lua function_name |  | s | E
Plug an authorization provider function into `mod_authz_core`
LuaCodeCache stat|forever|never | stat | svdh | E
Configure the compiled code cache.
LuaHookAccessChecker /path/to/lua/script.lua hook_function_name [early|late] |  | svdh | E
Provide a hook for the access_checker phase of request processing
LuaHookAuthChecker /path/to/lua/script.lua hook_function_name [early|late] |  | svdh | E
Provide a hook for the auth_checker phase of request processing
LuaHookCheckUserID /path/to/lua/script.lua hook_function_name [early|late] |  | svdh | E
Provide a hook for the check_user_id phase of request processing
LuaHookFixups /path/to/lua/script.lua hook_function_name |  | svdh | E
Provide a hook for the fixups phase of a request processing
LuaHookInsertFilter /path/to/lua/script.lua hook_function_name |  | svdh | E
Provide a hook for the insert_filter phase of request processing
LuaHookLog /path/to/lua/script.lua log_function_name |  | svdh | E
Provide a hook for the access log phase of a request processing
LuaHookMapToStorage /path/to/lua/script.lua hook_function_name |  | svdh | E
Provide a hook for the map_to_storage phase of request processing
LuaHookPreTranslate /path/to/lua/script.lua hook_function_name |  | svdh | E
Provide a hook for the pre_translate phase of a request processing
LuaHookTranslateName /path/to/lua/script.lua hook_function_name [early|late] |  | sv | E
Provide a hook for the translate name phase of request processing
LuaHookTypeChecker /path/to/lua/script.lua hook_function_name |  | svdh | E
Provide a hook for the type_checker phase of request processing
LuaInherit none|parent-first|parent-last | parent-first | svdh | E
Controls how parent configuration sections are merged into children
LuaInputFilter filter_name /path/to/lua/script.lua function_name |  | s | E
Provide a Lua function for content input filtering
LuaMapHandler uri-pattern /path/to/lua/script.lua [function-name] |  | svdh | E
Map a path to a lua handler
LuaOutputFilter filter_name /path/to/lua/script.lua function_name |  | s | E
Provide a Lua function for content output filtering
LuaPackageCPath /path/to/include/?.soa |  | svdh | E
Add a directory to lua's package.cpath
LuaPackagePath /path/to/include/?.lua |  | svdh | E
Add a directory to lua's package.path
LuaQuickHandler /path/to/script.lua hook_function_name |  | sv | E
Provide a hook for the quick handler of request processing
LuaRoot /path/to/a/directory |  | svdh | E
Specify the base path for resolving relative paths for mod_lua directives
LuaScope once|request|conn|thread|server [min] [max] | once | svdh | E
One of once, request, conn, thread -- default is once
<Macro name [par1 .. parN]> ... </Macro> |  | svd | B
Define a configuration file macro
MaxConnectionsPerChild number | 0 | s | M
Limit on the number of connections that an individual child server will handle during its life
MaxKeepAliveRequests number | 100 | sv | C
Number of requests allowed on a persistent connection
MaxMemFree KBytes | 2048 | s | M
Maximum amount of memory that the main allocator is allowed to hold without calling `free()`
MaxRangeOverlaps default | unlimited | none | number-of-ranges | 20 | svd | C
Number of overlapping ranges (eg: `100-200,150-300`) allowed before returning the complete resource
MaxRangeReversals default | unlimited | none | number-of-ranges | 20 | svd | C
Number of range reversals (eg: `100-200,50-70`) allowed before returning the complete resource
MaxRanges default | unlimited | none | number-of-ranges | 200 | svd | C
Number of ranges allowed before returning the complete resource
MaxRequestWorkers number |  | s | M
Maximum number of connections that will be processed simultaneously
MaxSpareServers number | 10 | s | M
Maximum number of idle child server processes
MaxSpareThreads number |  | s | M
Maximum number of idle threads
MaxThreads number | 2048 | s | M
Set the maximum number of worker threads
MDActivationDelay duration |  | s | X
How long to delay activation of new certificates
MDBaseServer on|off | off | s | X
Control if base server may be managed or only virtual hosts.
MDCAChallenges name [ name ... ] | tls-alpn-01 http-01 + | s | X
Type of ACME challenge used to prove domain ownership.
MDCertificateAgreement accepted |  | s | X
You confirm that you accepted the Terms of Service of the Certificate Authority.
MDCertificateAuthority url | letsencrypt | s | X
The URL(s) of the ACME Certificate Authority to use.
MDCertificateCheck name url |  | s | X
Set name and URL pattern for a certificate monitoring site.
MDCertificateFile path-to-pem-file |  | s | X
Specify a static certificate file for the MD.
MDCertificateKeyFile path-to-file |  | s | X
Specify a static private key for for the static cerrtificate.
MDCertificateMonitor name url | crt.sh https://crt. + | s | X
The URL of a certificate log monitor.
MDCertificateProtocol protocol | ACME | s | X
The protocol to use with the Certificate Authority.
MDCertificateStatus on|off | on | s | X
Exposes public certificate information in JSON.
MDChallengeDns01 path-to-command |  | s | X
Set the command for setup/teardown of dns-01 challenges
MDChallengeDns01Version 1|2 | 1 | s | X
Set the type of arguments to call MDChallengeDns01 with
MDCheckInterval duration | 12h | s | X
Determines how often certificates are checked
MDContactEmail address |  | s | X
Email address used for account registration
MDDriveMode always|auto|manual | auto | s | X
former name of MDRenewMode.
MDExternalAccountBinding key-id hmac-64 | none | file | none | s | X
Set the external account binding keyid and hmac values to use at CA
MDHttpProxy url |  | s | X
Define a proxy for outgoing connections.
MDMatchNames all|servernames | all | s | X
Determines how DNS names are matched to vhosts
MDMember hostname |  | s | X
Additional hostname for the managed domain.
MDMembers auto|manual | auto | s | X
Control if the alias domain names are automatically added.
MDMessageCmd path-to-cmd optional-args |  | s | X
Handle events for Manage Domains
MDMustStaple on|off | off | s | X
Control if new certificates carry the OCSP Must Staple flag.
MDNotifyCmd path [ args ] |  | s | X
Run a program when a Managed Domain is ready.
MDomain dns-name [ other-dns-name... ] [auto|manual] |  | s | X
Define list of domain names that belong to one group.
<MDomainSet dns-name [ other-dns-name... ]>...</MDomainSet> |  | s | X
Container for directives applied to the same managed domains.
MDPortMap map1 [ map2 ] | http:80 https:443 | s | X
Map external to internal ports for domain ownership verification.
MDPrivateKeys type [ params... ] | RSA 2048 | s | X
Set type and size of the private keys generated.
MDProfile name |  | s | X
Use a specific ACME profile from the CA
MDProfileMandatory on|off | off | s | X
Control if an MDProfile is mandatory.
MDRenewMode always|auto|manual | auto | s | X
Controls if certificates shall be renewed.
MDRenewWindow duration | 33% | s | X
Control when a certificate will be renewed.
MDRequireHttps off|temporary|permanent | off | s | X
Redirects http: traffic to https: for Managed Domains.
MDRetryDelay duration | 5s | s | X
Time length for first retry, doubled on every consecutive error.
MDRetryFailover number | 13 | s | X
The number of errors before a failover to another CA is triggered
MDServerStatus on|off | on | s | X
Control if Managed Domain information is added to server-status.
MDStapleOthers on|off | on | s | X
Enable stapling for certificates not managed by mod_md.
MDStapling on|off | off | s | X
Enable stapling for all or a particular MDomain.
MDStaplingKeepResponse duration | 7d | s | X
Controls when old responses should be removed.
MDStaplingRenewWindow duration | 33% | s | X
Control when the stapling responses will be renewed.
MDStoreDir path | md | s | X
Path on the local file system to store the Managed Domains data.
MDStoreLocks on|off|duration | off | s | X
Configure locking of store for updates
MDWarnWindow duration | 10% | s | X
Define the time window when you want to be warned about an expiring certificate.
MemcacheConnTTL num[units] | 15s | sv | E
Keepalive time for idle connections
MergeSlashes ON|OFF | ON | sv | C
Controls whether the server merges consecutive slashes in URLs.
MergeTrailers [on|off] | off | sv | C
Determines whether trailers are merged into headers
MetaDir directory | .web | svdh | E
Name of the directory to find CERN-style meta information files
MetaFiles on|off | off | svdh | E
Activates CERN meta-file processing
MetaSuffix suffix | .meta | svdh | E
File name suffix for the file containing CERN-style meta information
MimeMagicFile file-path |  | sv | E
Enable MIME-type determination based on file contents using the specified magic file
MinSpareServers number | 5 | s | M
Minimum number of idle child server processes
MinSpareThreads number |  | s | M
Minimum number of idle threads available to handle request spikes
MMapFile file-path [file-path] ... |  | s | X
Map a list of files into memory at startup time
ModemStandard V.21|V.26bis|V.32|V.34|V.92 |  | d | X
Modem standard to simulate
ModMimeUsePathInfo On|Off | Off | d | B
Tells `mod_mime` to treat `path_info` components as part of the filename
MultiviewsMatch Any|NegotiatedOnly|Filters|Handlers [Handlers|Filters] | NegotiatedOnly | svdh | B
The types of files that will be included when searching for a matching file with MultiViews
Mutex mechanism [default|mutex-name] ... [OmitPID] | default | s | C
Configures mutex mechanism and lock file directory for all or specified mutexes
NameVirtualHost addr[:port] |  | s | C
DEPRECATED: Designates an IP address for name-virtual hosting
NoProxy host [host] ... |  | sv | E
Hosts, domains, or networks that will be connected to directly
NWSSLTrustedCerts filename [filename] ... |  | s | B
List of additional client certificates
NWSSLUpgradeable [IP-address:]portnumber |  | s | B
Allows a connection to be upgraded to an SSL connection upon request
Options [+|-]option [[+|-]option] ... | FollowSymlinks | svdh | C
Configures what features are available in a particular directory
Order ordering | Deny,Allow | dh | E
Controls the default access state and the order in which `Allow` and `Deny` are evaluated.
OutputSed sed-command |  | dh | X
Sed command for filtering response content
PassEnv env-variable [env-variable] ... |  | svdh | B
Passes environment variables from the shell
PidFile filename | logs/httpd.pid | s | M
File where the server records the process ID of the daemon
PrivilegesMode FAST|SECURE|SELECTIVE | FAST | svd | X
Trade off processing speed and efficiency vs security against malicious privileges-aware code.
Protocol protocol |  | sv | C
Protocol for a listening socket
ProtocolEcho On|Off | Off | sv | X
Turn the echo server on or off
Protocols protocol ... | http/1.1 | sv | C
Protocols available for a server/virtual host
ProtocolsHonorOrder On|Off | On | sv | C
Determines if order of Protocols determines precedence during negotiation
<Proxy wildcard-url> ...</Proxy> |  | sv | E
Container for directives applied to proxied resources
Proxy100Continue Off|On | On | svd | E
Forward 100-continue expectation to the origin server
ProxyAddHeaders Off|On | On | svd | E
Add proxy information in X-Forwarded-* headers
ProxyBadHeader IsError|Ignore|StartBody | IsError | sv | E
Determines how to handle bad header lines in a response
ProxyBlock *|word|host|domain [word|host|domain] ... |  | sv | E
Words, hosts, or domains that are banned from being proxied
ProxyDomain Domain |  | sv | E
Default domain name for proxied requests
ProxyErrorOverride Off|On [code ...] | Off | svd | E
Override error pages for proxied content
ProxyExpressDBMFile pathname |  | sv | E
Pathname to DBM file.
ProxyExpressDBMType type | default | sv | E
DBM type of file.
ProxyExpressEnable on|off | off | sv | E
Enable the module functionality.
ProxyFCGIBackendType FPM|GENERIC | FPM | svdh | E
Specify the type of backend FastCGI application
ProxyFCGISetEnvIf conditional-expression [!]environment-variable-name [value-expression] |  | svdh | E
Allow variables sent to FastCGI servers to be fixed up
ProxyFtpDirCharset character_set | ISO-8859-1 | svd | E
Define the character set for proxied FTP listings
ProxyFtpEscapeWildcards on|off | on | svd | E
Whether wildcards in requested filenames are escaped when sent to the FTP server
ProxyFtpListOnWildcard on|off | on | svd | E
Whether wildcards in requested filenames trigger a file listing
ProxyHCExpr name {ap_expr expression} |  | sv | E
Creates a named condition expression to use to determine health of the backend based on its response
ProxyHCTemplate name parameter=setting [...] |  | sv | E
Creates a named template for setting various health check parameters
ProxyHCTPsize size | 16 | s | E
Sets the total server-wide size of the threadpool used for the health check workers
ProxyHTMLBufSize bytes | 8192 | svd | B
Sets the buffer size increment for buffering inline scripts and stylesheets.
ProxyHTMLCharsetOut Charset | * |  | svd | B
Specify a charset for mod_proxy_html output.
ProxyHTMLDocType HTML|XHTML [Legacy] OR ProxyHTMLDocType fpi [SGML|XML] |  | svd | B
Sets an HTML or XHTML document type declaration.
ProxyHTMLEnable On|Off | Off | svd | B
Turns the proxy_html filter on or off.
ProxyHTMLEvents attribute [attribute ...] |  | svd | B
Specify attributes to treat as scripting events.
ProxyHTMLExtended On|Off | Off | svd | B
Determines whether to fix links in inline scripts, stylesheets, and scripting events.
ProxyHTMLFixups [lowercase] [dospath] [reset] |  | svd | B
Fixes for simple HTML errors.
ProxyHTMLInterp On|Off | Off | svd | B
Enables per-request interpolation of `ProxyHTMLURLMap` rules.
ProxyHTMLLinks element attribute [attribute2 ...] |  | svd | B
Specify HTML elements that have URL attributes to be rewritten.
ProxyHTMLMeta On|Off | Off | svd | B
Turns on or off extra pre-parsing of metadata in HTML `<head>` sections.
ProxyHTMLStripComments On|Off | Off | svd | B
Determines whether to strip HTML comments.
ProxyHTMLURLMap from-pattern to-pattern [flags] [cond] |  | svd | B
Defines a rule to rewrite HTML links
ProxyIOBufferSize bytes | 8192 | sv | E
Determine size of internal data throughput buffer
<ProxyMatch regex> ...</ProxyMatch> |  | sv | E
Container for directives applied to regular-expression-matched proxied resources
ProxyMaxForwards number | -1 | sv | E
Maximum number of proxies that a request can be forwarded through
ProxyPass [path] !|url [key=value [key=value ...]] [nocanon] [interpolate] [noquery] |  | svd | E
Maps remote servers into the local server URL-space
ProxyPassInherit On|Off | On | sv | E
Inherit ProxyPass directives defined from the main server
ProxyPassInterpolateEnv On|Off | Off | svd | E
Enable Environment Variable interpolation in Reverse Proxy configurations
ProxyPassMatch [regex] !|url [key=value [key=value ...]] |  | svd | E
Maps remote servers into the local server URL-space using regular expressions
ProxyPassReverse [path] url [interpolate] |  | svd | E
Adjusts the URL in HTTP response headers sent from a reverse proxied server
ProxyPassReverseCookieDomain internal-domain public-domain [interpolate] |  | svd | E
Adjusts the Domain string in Set-Cookie headers from a reverse- proxied server
ProxyPassReverseCookiePath internal-path public-path [interpolate] |  | svd | E
Adjusts the Path string in Set-Cookie headers from a reverse- proxied server
ProxyPreserveHost On|Off | Off | svd | E
Use incoming Host HTTP request header for proxy request
ProxyReceiveBufferSize bytes | 0 | sv | E
Network buffer size for proxied HTTP and FTP connections
ProxyRemote match remote-server [username:password] |  | sv | E
Remote proxy used to handle certain requests
ProxyRemoteMatch regex remote-server [username:password] |  | sv | E
Remote proxy used to handle requests matched by regular expressions
ProxyRequests On|Off | Off | sv | E
Enables forward (standard) proxy requests
ProxySCGIInternalRedirect On|Off|Headername | On | svd | E
Enable or disable internal redirect responses from the backend
ProxySCGISendfile On|Off|Headername | Off | svd | E
Enable evaluation of X-Sendfile pseudo response header
ProxySet url key=value [key=value ...] |  | svd | E
Set various Proxy balancer or member parameters
ProxySourceAddress address |  | sv | E
Set local IP address for outgoing proxy connections
ProxyStatus Off|On|Full | Off | sv | E
Show Proxy LoadBalancer status in mod_status
ProxyTimeout seconds |  | sv | E
Network timeout for proxied requests
ProxyVia On|Off|Full|Block | Off | sv | E
Information provided in the `Via` HTTP response header for proxied requests
ProxyWebsocketFallbackToProxyHttp On|Off | On | sv | E
Instructs this module to let `mod_proxy_http` handle the request
QualifyRedirectURL On|Off | Off | svd | C
Controls whether the REDIRECT_URL environment variable is fully qualified
ReadBufferSize bytes | 8192 | svd | C
Size of the buffers used to read data
ReadmeName filename |  | svdh | B
Name of the file that will be inserted at the end of the index listing
ReceiveBufferSize bytes | 0 | s | M
TCP receive buffer size
Redirect [status] [URL-path] URL |  | svdh | B
Sends an external redirect asking the client to fetch a different URL
RedirectMatch [status] regex URL |  | svdh | B
Sends an external redirect based on a regular expression match of the current URL
RedirectPermanent URL-path URL |  | svdh | B
Sends an external permanent redirect asking the client to fetch a different URL
RedirectRelative On|Off | Off | svd | B
Allows relative redirect targets.
RedirectTemp URL-path URL |  | svdh | B
Sends an external temporary redirect asking the client to fetch a different URL
RedisConnPoolTTL num[units] | 15s | sv | E
TTL used for the connection pool with the Redis server(s)
RedisTimeout num[units] | 5s | sv | E
R/W timeout used for the connection with the Redis server(s)
ReflectorHeader inputheader [outputheader] |  | svdh | B
Reflect an input header to the output headers
RegexDefaultOptions [none] [+|-]option [[+|-]option] ... | DOTALL DOLLAR_ENDON + | s | C
Allow to configure global/default options for regexes
RegisterHttpMethod method [method [...]] |  | s | C
Register non-standard HTTP methods
RemoteIPHeader header-field |  | sv | B
Declare the header field which should be parsed for useragent IP addresses
RemoteIPInternalProxy proxy-ip|proxy-ip/subnet|hostname ... |  | sv | B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPInternalProxyList filename |  | sv | B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPProxiesHeader HeaderFieldName |  | sv | B
Declare the header field which will record all intermediate IP addresses
RemoteIPProxyProtocol On|Off |  | sv | B
Enable or disable PROXY protocol handling
RemoteIPProxyProtocolExceptions host|range [host|range] [host|range] |  | sv | B
Disable processing of PROXY header for certain hosts or networks
RemoteIPTrustedProxy proxy-ip|proxy-ip/subnet|hostname ... |  | sv | B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPTrustedProxyList filename |  | sv | B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoveCharset extension [extension] ... |  | vdh | B
Removes any character set associations for a set of file extensions
RemoveEncoding extension [extension] ... |  | vdh | B
Removes any content encoding associations for a set of file extensions
RemoveHandler extension [extension] ... |  | vdh | B
Removes any handler associations for a set of file extensions
RemoveInputFilter extension [extension] ... |  | vdh | B
Removes any input filter associations for a set of file extensions
RemoveLanguage extension [extension] ... |  | vdh | B
Removes any language associations for a set of file extensions
RemoveOutputFilter extension [extension] ... |  | vdh | B
Removes any output filter associations for a set of file extensions
RemoveType extension [extension] ... |  | vdh | B
Removes any content type associations for a set of file extensions
RequestHeader add|append|edit|edit*|merge|set|setifempty|unset header [[expr=]value [replacement] [early|env=[!]varname|expr=expression]] |  | svdh | E
Configure HTTP request headers
RequestReadTimeout [handshake=timeout[-maxtimeout][,MinRate=rate] [header=timeout[-maxtimeout][,MinRate=rate] [body=timeout[-maxtimeout][,MinRate=rate] | handshake=0 header= + | sv | E
Set timeout values for completing the TLS handshake, receiving the request headers and/or body from client.
Require [not] entity-name [entity-name] ... |  | dh | B
Tests whether an authenticated user is authorized by an authorization provider.
<RequireAll> ... </RequireAll> |  | dh | B
Enclose a group of authorization directives of which none must fail and at least one must succeed for the enclosing directive to succeed.
<RequireAny> ... </RequireAny> |  | dh | B
Enclose a group of authorization directives of which one must succeed for the enclosing directive to succeed.
<RequireNone> ... </RequireNone> |  | dh | B
Enclose a group of authorization directives of which none must succeed for the enclosing directive to not fail.
RewriteBase URL-path |  | dh | E
Sets the base URL for per-directory rewrites
RewriteCond TestString CondPattern [flags] |  | svdh | E
Defines a condition under which rewriting will take place
RewriteEngine on|off | off | svdh | E
Enables or disables runtime rewriting engine
RewriteMap MapName MapType:MapSource [MapTypeOptions] |  | sv | E
Defines a mapping function for key-lookup
RewriteOptions Options |  | svdh | E
Sets some special options for the rewrite engine
RewriteRule Pattern Substitution [flags] |  | svdh | E
Defines rules for the rewriting engine
RLimitCPU seconds|max [seconds|max] |  | svdh | C
Limits the CPU consumption of processes launched by Apache httpd children
RLimitMEM bytes|max [bytes|max] |  | svdh | C
Limits the memory consumption of processes launched by Apache httpd children
RLimitNPROC number|max [number|max] |  | svdh | C
Limits the number of processes that can be launched by processes launched by Apache httpd children
Satisfy Any|All | All | dh | E
Interaction between host-level access control and user authentication
ScoreBoardFile file-path | logs/apache_runtime + | s | M
Location of the file used to store coordination data for the child processes
Script method cgi-script |  | svd | B
Activates a CGI script for a particular request method.
ScriptAlias [URL-path] file-path|directory-path |  | svd | B
Maps a URL to a filesystem location and designates the target as a CGI script
ScriptAliasMatch regex file-path|directory-path |  | sv | B
Maps a URL to a filesystem location using a regular expression and designates the target as a CGI script
ScriptInterpreterSource Registry|Registry-Strict|Script | Script | svdh | C
Technique for locating the interpreter for CGI scripts
ScriptLog file-path |  | sv | B
Location of the CGI script error logfile
ScriptLogBuffer bytes | 1024 | sv | B
Maximum amount of PUT or POST requests that will be recorded in the scriptlog
ScriptLogLength bytes | 10385760 | sv | B
Size limit of the CGI script logfile
ScriptSock file-path | cgisock | s | B
The filename prefix of the socket to use for communication with the cgi daemon
SecureListen [IP-address:]portnumber Certificate-Name [MUTUAL] |  | s | B
Enables SSL encryption for the specified port
SeeRequestTail On|Off | Off | s | C
Determine if mod_status displays the first 63 characters of a request or the last 63, assuming the request itself is greater than 63 chars.
SendBufferSize bytes | 0 | s | M
TCP buffer size
ServerAdmin email-address|URL |  | sv | C
Email address that the server includes in error messages sent to the client
ServerAlias hostname [hostname] ... |  | v | C
Alternate names for a host used when matching requests to name-virtual hosts
ServerLimit number |  | s | M
Upper limit on configurable number of processes
ServerName [scheme://]domain-name|ip-address[:port] |  | sv | C
Hostname and port that the server uses to identify itself
ServerPath URL-path |  | v | C
Legacy URL pathname for a name-based virtual host that is accessed by an incompatible browser
ServerRoot directory-path | /usr/local/apache | s | C
Base directory for the server installation
ServerSignature On|Off|EMail | Off | svdh | C
Configures the footer on server-generated documents
ServerTokens Major|Minor|Min[imal]|Prod[uctOnly]|OS|Full | Full | s | C
Configures the `Server` HTTP response header
Session On|Off | Off | svdh | E
Enables a session for the current directory or location
SessionCookieName name attributes |  | svdh | E
Name and attributes for the RFC2109 cookie storing the session
SessionCookieName2 name attributes |  | svdh | E
Name and attributes for the RFC2965 cookie storing the session
SessionCookieRemove On|Off | Off | svdh | E
Control for whether session cookies should be removed from incoming HTTP headers
SessionCryptoCipher name | aes256 | svdh | X
The crypto cipher to be used to encrypt the session
SessionCryptoDriver name [param[=value]] |  | s | X
The crypto driver to be used to encrypt the session
SessionCryptoPassphrase secret [ secret ... ] |  | svdh | X
The key used to encrypt the session
SessionCryptoPassphraseFile filename |  | svd | X
File containing keys used to encrypt the session
SessionDBDCookieName name attributes |  | svdh | E
Name and attributes for the RFC2109 cookie storing the session ID
SessionDBDCookieName2 name attributes |  | svdh | E
Name and attributes for the RFC2965 cookie storing the session ID
SessionDBDCookieRemove On|Off | On | svdh | E
Control for whether session ID cookies should be removed from incoming HTTP headers
SessionDBDDeleteLabel label | deletesession | svdh | E
The SQL query to use to remove sessions from the database
SessionDBDInsertLabel label | insertsession | svdh | E
The SQL query to use to insert sessions into the database
SessionDBDPerUser On|Off | Off | svdh | E
Enable a per user session
SessionDBDSelectLabel label | selectsession | svdh | E
The SQL query to use to select sessions from the database
SessionDBDUpdateLabel label | updatesession | svdh | E
The SQL query to use to update existing sessions in the database
SessionEnv On|Off | Off | svdh | E
Control whether the contents of the session are written to the HTTP_SESSION environment variable
SessionExclude path |  | svdh | E
Define URL prefixes for which a session is ignored
SessionExpiryUpdateInterval interval | 0 (always update) | svdh | E
Define the number of seconds a session's expiry may change without the session being updated
SessionHeader header |  | svdh | E
Import session updates from a given HTTP response header
SessionInclude path |  | svdh | E
Define URL prefixes for which a session is valid
SessionMaxAge maxage | 0 | svdh | E
Define a maximum age in seconds for a session
SetEnv env-variable [value] |  | svdh | B
Sets environment variables
SetEnvIf attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ... |  | svdh | B
Sets environment variables based on attributes of the request
SetEnvIfExpr expr [!]env-variable[=value] [[!]env-variable[=value]] ... |  | svdh | B
Sets environment variables based on an ap_expr expression
SetEnvIfNoCase attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ... |  | svdh | B
Sets environment variables based on attributes of the request without respect to case
SetHandler handler-name|none|expression |  | svdh | C
Forces all matching files to be processed by a handler
SetInputFilter filter[;filter...] |  | svdh | C
Sets the filters that will process client requests and POST input
SetOutputFilter filter[;filter...] |  | svdh | C
Sets the filters that will process responses from the server
SSIEndTag tag | "-->" | sv | B
String that ends an include element
SSIErrorMsg message | "[an error occurred + | svdh | B
Error message displayed when there is an SSI error
SSIETag on|off | off | dh | B
Controls whether ETags are generated by the server.
SSILastModified on|off | off | dh | B
Controls whether `Last-Modified` headers are generated by the server.
SSILegacyExprParser on|off | off | dh | B
Enable compatibility mode for conditional expressions.
SSIStartTag tag | "<!--#" | sv | B
String that starts an include element
SSITimeFormat formatstring | "%A, %d-%b-%Y %H:%M + | svdh | B
Configures the format in which date strings are displayed
SSIUndefinedEcho string | "(none)" | svdh | B
String displayed when an unset variable is echoed
SSLCACertificateFile file-path |  | sv | E
File of concatenated PEM-encoded CA Certificates for Client Auth
SSLCACertificatePath directory-path |  | sv | E
Directory of PEM-encoded CA Certificates for Client Auth
SSLCADNRequestFile file-path |  | sv | E
File of concatenated PEM-encoded CA Certificates for defining acceptable CA names
SSLCADNRequestPath directory-path |  | sv | E
Directory of PEM-encoded CA Certificates for defining acceptable CA names
SSLCARevocationCheck chain|leaf|none [flags ...] | none | sv | E
Enable CRL-based revocation checking
SSLCARevocationFile file-path |  | sv | E
File of concatenated PEM-encoded CA CRLs for Client Auth
SSLCARevocationPath directory-path |  | sv | E
Directory of PEM-encoded CA CRLs for Client Auth
SSLCertificateChainFile file-path |  | sv | E
File of PEM-encoded Server CA Certificates
SSLCertificateFile file-path|certid |  | sv | E
Server PEM-encoded X.509 certificate data file or token identifier
SSLCertificateKeyFile file-path|keyid |  | sv | E
Server PEM-encoded private key file
SSLCipherSuite [protocol] cipher-spec | DEFAULT (depends on + | svdh | E
Cipher Suite available for negotiation in SSL handshake
SSLCompression on|off | off | sv | E
Enable compression on the SSL level
SSLCryptoDevice engine | builtin | s | E
Enable use of a cryptographic hardware accelerator
SSLEngine on|off | off | sv | E
SSL Engine Operation Switch
SSLFIPS on|off | off | s | E
SSL FIPS mode Switch
SSLHonorCipherOrder on|off | off | sv | E
Option to prefer the server's cipher preference order
SSLInsecureRenegotiation on|off | off | sv | E
Option to enable support for insecure renegotiation
SSLOCSPDefaultResponder uri |  | sv | E
Set the default responder URI for OCSP validation
SSLOCSPEnable on|leaf|off | off | sv | E
Enable OCSP validation of the client certificate chain
SSLOCSPNoverify on|off | off | sv | E
skip the OCSP responder certificates verification
SSLOCSPOverrideResponder on|off | off | sv | E
Force use of the default responder URI for OCSP validation
SSLOCSPProxyURL url |  | sv | E
Proxy URL to use for OCSP requests
SSLOCSPResponderCertificateFile file |  | sv | E
Set of trusted PEM encoded OCSP responder certificates
SSLOCSPResponderTimeout seconds | 10 | sv | E
Timeout for OCSP queries
SSLOCSPResponseMaxAge seconds | -1 | sv | E
Maximum allowable age for OCSP responses
SSLOCSPResponseTimeSkew seconds | 300 | sv | E
Maximum allowable time skew for OCSP response validation
SSLOCSPUseRequestNonce on|off | on | sv | E
Use a nonce within OCSP queries
SSLOpenSSLConfCmd command-name command-value |  | sv | E
Configure OpenSSL parameters through its SSL_CONF API
SSLOptions [+|-]option ... |  | svdh | E
Configure various SSL engine run-time options
SSLPassPhraseDialog type | builtin | s | E
Type of pass phrase dialog for encrypted private keys
SSLProtocol [+|-]protocol ... | all -SSLv3 (up to 2 + | sv | E
Configure usable SSL/TLS protocol versions
SSLProxyCACertificateFile file-path |  | sv | E
File of concatenated PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCACertificatePath directory-path |  | sv | E
Directory of PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCARevocationCheck chain|leaf|none | none | sv | E
Enable CRL-based revocation checking for Remote Server Auth
SSLProxyCARevocationFile file-path |  | sv | E
File of concatenated PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCARevocationPath directory-path |  | sv | E
Directory of PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCheckPeerCN on|off | on | sv | E
Whether to check the remote server certificate's CN field
SSLProxyCheckPeerExpire on|off | on | sv | E
Whether to check if remote server certificate is expired
SSLProxyCheckPeerName on|off | on | sv | E
Configure host name checking for remote server certificates
SSLProxyCipherSuite [protocol] cipher-spec | ALL:!ADH:RC4+RSA:+H + | sv | E
Cipher Suite available for negotiation in SSL proxy handshake
SSLProxyEngine on|off | off | sv | E
SSL Proxy Engine Operation Switch
SSLProxyMachineCertificateChainFile filename |  | sv | E
File of concatenated PEM-encoded CA certificates to be used by the proxy for choosing a certificate
SSLProxyMachineCertificateFile filename |  | sv | E
File of concatenated PEM-encoded client certificates and keys to be used by the proxy
SSLProxyMachineCertificatePath directory |  | sv | E
Directory of PEM-encoded client certificates and keys to be used by the proxy
SSLProxyProtocol [+|-]protocol ... | all -SSLv3 (up to 2 + | sv | E
Configure usable SSL protocol flavors for proxy usage
SSLProxyVerify level | none | sv | E
Type of remote server Certificate verification
SSLProxyVerifyDepth number | 1 | sv | E
Maximum depth of CA Certificates in Remote Server Certificate verification
SSLRandomSeed context source [bytes] |  | s | E
Pseudo Random Number Generator (PRNG) seeding source
SSLRenegBufferSize bytes | 131072 | dh | E
Set the size for the SSL renegotiation buffer
SSLRequire expression |  | dh | E
Allow access only when an arbitrarily complex boolean expression is true
SSLRequireSSL |  | dh | E
Deny access when SSL is not used for the HTTP request
SSLSessionCache type | none | s | E
Type of the global/inter-process SSL Session Cache
SSLSessionCacheTimeout seconds | 300 | sv | E
Number of seconds before an SSL session expires in the Session Cache
SSLSessionTicketKeyFile file-path |  | sv | E
Persistent encryption/decryption key for TLS session tickets
SSLSessionTickets on|off | on | sv | E
Enable or disable use of TLS session tickets
SSLSRPUnknownUserSeed secret-string |  | sv | E
SRP unknown user seed
SSLSRPVerifierFile file-path |  | sv | E
Path to SRP verifier file
SSLStaplingCache type |  | s | E
Configures the OCSP stapling cache
SSLStaplingErrorCacheTimeout seconds | 600 | sv | E
Number of seconds before expiring invalid responses in the OCSP stapling cache
SSLStaplingFakeTryLater on|off | on | sv | E
Synthesize "tryLater" responses for failed OCSP stapling queries
SSLStaplingForceURL uri |  | sv | E
Override the OCSP responder URI specified in the certificate's AIA extension
SSLStaplingResponderTimeout seconds | 10 | sv | E
Timeout for OCSP stapling queries
SSLStaplingResponseMaxAge seconds | -1 | sv | E
Maximum allowable age for OCSP stapling responses
SSLStaplingResponseTimeSkew seconds | 300 | sv | E
Maximum allowable time skew for OCSP stapling response validation
SSLStaplingReturnResponderErrors on|off | on | sv | E
Pass stapling related OCSP errors on to client
SSLStaplingStandardCacheTimeout seconds | 3600 | sv | E
Number of seconds before expiring responses in the OCSP stapling cache
SSLStrictSNIVHostCheck on|off | off | sv | E
Whether to allow non-SNI clients to access a name-based virtual host.
SSLUserName varname |  | sdh | E
Variable name to determine user name
SSLUseStapling on|off | off | sv | E
Enable stapling of OCSP responses in the TLS handshake
SSLVerifyClient level | none | svdh | E
Type of Client Certificate verification
SSLVerifyDepth number | 1 | svdh | E
Maximum depth of CA Certificates in Client Certificate verification
StartServers number |  | s | M
Number of child server processes created at startup
StartThreads number |  | s | M
Number of threads created on startup
StrictHostCheck ON|OFF | OFF | sv | C
Controls whether the server requires the requested hostname be listed enumerated in the virtual host handling the request
Substitute s/pattern/substitution/[infq] |  | dh | E
Pattern to filter the response content
SubstituteInheritBefore on|off | off | dh | E
Change the merge order of inherited patterns
SubstituteMaxLineLength bytes(b|B|k|K|m|M|g|G) | 1m | dh | E
Set the maximum line size
Suexec On|Off |  | s | B
Enable or disable the suEXEC feature
SuexecUserGroup User Group |  | sv | E
User and group for CGI programs to run as
ThreadLimit number |  | s | M
Sets the upper limit on the configurable number of threads per child process
ThreadsPerChild number |  | s | M
Number of threads created by each child process
ThreadStackSize size |  | s | M
The size in bytes of the stack used by threads handling client connections
TimeOut seconds | 60 | sv | C
Amount of time the server will wait for certain events before failing a request
TraceEnable [on|off|extended] | on | sv | C
Determines the behavior on `TRACE` requests
TransferLog file|pipe |  | sv | B
Specify location of a log file
TypesConfig file-path | conf/mime.types | s | B
The location of the `mime.types` file
UNCList hostname [hostname...] |  | s | C
Controls what UNC host names can be accessed by the server
UnDefine parameter-name |  | s | C
Undefine the existence of a variable
UndefMacro name |  | svd | B
Undefine a macro
UnsetEnv env-variable [env-variable] ... |  | svdh | B
Removes variables from the environment
Use name [value1 ... valueN] |  | svd | B
Use a macro
UseCanonicalName On|Off|DNS | Off | svd | C
Configures how the server determines its own name and port
UseCanonicalPhysicalPort On|Off | Off | svd | C
Configures how the server determines its own port
User unix-userid | #-1 | s | B
The userid under which the server will answer requests
UserDir directory-filename [directory-filename] ... |  | sv | B
Location of the user-specific directories
VHostCGIMode On|Off|Secure | On | v | X
Determines whether the virtualhost can run subprocesses, and the privileges available to subprocesses.
VHostCGIPrivs [+-]?privilege-name [[+-]?privilege-name] ... |  | v | X
Assign arbitrary privileges to subprocesses created by a virtual host.
VHostGroup unix-groupid |  | v | X
Sets the Group ID under which a virtual host runs.
VHostPrivs [+-]?privilege-name [[+-]?privilege-name] ... |  | v | X
Assign arbitrary privileges to a virtual host.
VHostSecure On|Off | On | v | X
Determines whether the server runs with enhanced security for the virtualhost.
VHostUser unix-userid |  | v | X
Sets the User ID under which a virtual host runs.
VirtualDocumentRoot interpolated-directory|none | none | sv | E
Dynamically configure the location of the document root for a given virtual host
VirtualDocumentRootIP interpolated-directory|none | none | sv | E
Dynamically configure the location of the document root for a given virtual host
<VirtualHost addr[:port] [addr[:port]] ...> ... </VirtualHost> |  | s | C
Contains directives that apply only to a specific hostname or IP address
VirtualScriptAlias interpolated-directory|none | none | sv | E
Dynamically configure the location of the CGI directory for a given virtual host
VirtualScriptAliasIP interpolated-directory|none | none | sv | E
Dynamically configure the location of the CGI directory for a given virtual host
WatchdogInterval time-interval[s] | 1 | s | B
Watchdog interval in seconds
XBitHack on|off|full | off | svdh | B
Parse SSI directives in files with the execute bit set
xml2EncAlias charset alias [alias ...] |  | s | B
Recognise Aliases for encoding values
xml2EncDefault name |  | svdh | B
Sets a default encoding to assume when absolutely no information can be automatically detected
xml2StartParse element [element ...] |  | svdh | B
Advise the parser to skip leading junk.

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