Apache HTTP 服务器版本 2.2

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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 | 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
AcceptMutex Default|method | Default | s | M
Method that Apache uses to serialize multiple children accepting requests on network 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 MIME-enc 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 MIME-lang 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...] MIME-type [MIME-type] ... |  | svdh | C
assigns an output filter to a particular MIME-type
AddType MIME-type extension [extension] ... |  | svdh | B
Maps the given filename extensions onto the specified content type
Alias URL-path file-path|directory-path |  | sv | B
Maps URLs to filesystem locations
AliasMatch regex file-path|directory-path |  | sv | B
Maps URLs to filesystem locations using regular expressions
Allow from all|host|env=[!]env-variable [host|env=[!]env-variable] ... |  | dh | B
Controls which hosts can access an area of the server
AllowCONNECT 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
AllowOverride All|None|directive-type [directive-type] ... | All | d | C
Types of 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
AuthBasicAuthoritative On|Off | On | dh | B
Sets whether authorization and authentication are passed to lower level modules
AuthBasicProvider provider-name [provider-name] ... | file | dh | B
Sets the authentication provider(s) for this location
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
AuthDefaultAuthoritative On|Off | On | dh | B
Sets whether authentication is passed to lower level modules
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
AuthDigestNcCheck On|Off | Off | s | E
Enables or disables checking of the nonce-count sent by the server
AuthDigestNonceFormat format |  | dh | E
Determines how the nonce is generated
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
AuthGroupFile file-path |  | dh | B
Sets the name of a text file containing the list of user groups for authorization
AuthLDAPBindAuthoritativeoff|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 conjuction with the bind DN
AuthLDAPCharsetConfig file-path |  | s | E
Language to charset conversion configuration file
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 check for group membership
AuthLDAPGroupAttributeIsDN on|off | on | dh | E
Use the DN of the client username when checking for group membership
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
AuthLDAPUrl url [NONE|SSL|TLS|STARTTLS] |  | dh | E
URL specifying the LDAP search parameters
AuthName auth-domain |  | dh | C
Authorization realm for use in HTTP authentication
<AuthnProviderAlias baseProvider Alias> ... </AuthnProviderAlias> |  | s | E
Enclose a group of directives that represent an extension of a base authentication provider and referenced by the specified alias
AuthType Basic|Digest |  | dh | C
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
AuthzDBMAuthoritative On|Off | On | dh | E
Sets whether authorization will be passed on to lower level modules
AuthzDBMType default|SDBM|GDBM|NDBM|DB | default | dh | E
Sets the type of database file that is used to store list of user groups
AuthzDefaultAuthoritative On|Off | On | dh | B
Sets whether authorization is passed to lower level modules
AuthzGroupFileAuthoritative On|Off | On | dh | B
Sets whether authorization will be passed on to lower level modules
AuthzLDAPAuthoritative on|off | on | dh | E
Prevent other authentication modules from authenticating the user if this one fails
AuthzOwnerAuthoritative On|Off | On | dh | E
Sets whether authorization will be passed on to lower level modules
AuthzUserAuthoritative On|Off | On | dh | B
Sets whether authorization will be passed on to lower level modules
BalancerMember [balancerurl] url [key=value [key=value ...]] |  | d | E
Add a member to a load balancing group
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
CacheDefaultExpire seconds | 3600 (one hour) | sv | E
The default duration to cache a document when no expiry date is specified.
CacheDirLength length | 2 | sv | E
The number of characters in subdirectory names
CacheDirLevels levels | 3 | sv | E
The number of levels of subdirectories in the cache.
CacheDisable url-string |  | sv | E
Disable caching of specified URLs
CacheEnable cache_type url-string |  | sv | 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
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 | sv | 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
CacheLastModifiedFactor float | 0.1 | sv | 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) | sv | E
The maximum time in seconds to cache a document
CacheMaxFileSize bytes | 1000000 | sv | E
The maximum size (in bytes) of a document to be placed in the cache
CacheMinFileSize bytes | 1 | sv | 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
CacheRoot directory |  | sv | E
The directory root under which cache files are stored
CacheStoreNoStore On|Off | Off | sv | E
Attempt to cache requests or responses that have been marked as no-store.
CacheStorePrivate On|Off | Off | sv | E
Attempt to cache responses that the server has marked as private
CGIMapExtension cgi-path .extension |  | dh | C
Technique for locating the interpreter for CGI scripts
CharsetDefault charset |  | svdh | E
Charset to translate into
CharsetOptions option [option] ... | DebugLevel=0 NoImpl + | svdh | E
Configures charset translation behavior
CharsetSourceEnc charset |  | svdh | E
Source charset of files
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 | M
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
CookieLog filename |  | sv | B
Sets filename for the logging of cookies
CookieName token | Apache | svdh | E
Name of the tracking 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 attempts to switch before dumping core
CustomLog file|pipe format|nickname [env=[!]environment-variable] |  | sv | B
Sets filename and format of log file
Dav On|Off|provider-name | Off | d | E
Enable WebDAV HTTP methods
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
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
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 MIME-lang |  | svdh | B
Sets all files in the given scope to the specified language
DefaultType MIME-type|none | text/plain | svdh | C
MIME content-type that will be sent if the server cannot determine a type in any other way
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
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 | B
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
DirectoryIndex local-url [local-url] ... | index.html | svdh | B
List of resources to look for when the client requests a directory
<DirectoryMatch regex> ... </DirectoryMatch> |  | sv | C
Enclose directives that apply to file-system directories matching a regular expression and their subdirectories
DirectorySlash On|Off | On | svdh | B
Toggle trailing slash redirects on or off
DocumentRoot directory-path | /usr/local/apache/h + | sv | C
Directory that forms the main document tree visible from the web
DumpIOInput On|Off | Off | s | E
Dump all input data to the error log
DumpIOLogLevel level | debug | s | E
Controls the logging level of the DumpIO output
DumpIOOutput On|Off | Off | s | E
Dump all output data to the error log
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 | On | svdh | C
Use the kernel sendfile support to deliver files to the client
ErrorDocument error-code document |  | svdh | C
What the server will return to the client in case of an error
ErrorLog file-path|syslog[:facility] | logs/error_log (Uni + | sv | C
Location where the server will log errors
Example |  | svdh | X
Demonstration directive to illustrate the Apache module API
ExpiresActive On|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 | B
Keep track of extended status information for each request
ExtFilterDefine filtername parameters |  | s | E
Define an external filter
ExtFilterOptions option [option] ... | DebugLevel=0 NoLogS + | 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 ... | INode 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 [req|resp|env]=dispatch match |  | svdh | B
Register a content filter
FilterTrace filter-name level |  | svd | B
Get debug/diagnostic information from `mod_filter`
ForceLanguagePriority None|Prefer|Fallback [Prefer|Fallback] | Prefer | svdh | B
Action to take if a single acceptable document is not found
ForceType MIME-type|None |  | dh | C
Forces all matching files to be served with the specified MIME content-type
ForensicLog filename|pipe |  | sv | E
Sets filename of the forensic log
GprofDir /tmp/gprof/|/tmp/gprof/% |  | sv | C
Directory to write gmon.out profiling data to.
GracefulShutDownTimeout seconds |  | s | M
Specify a timeout after which a gracefully shutdown server will exit.
Group unix-group | #-1 | s | M
Group under which the server will answer requests
Header [condition] set|append|merge|add|unset|echo|edit header [value] [replacement] [early|env=[!]variable] |  | 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
HostnameLookups On|Off|Double | Off | svd | C
Enables DNS lookups on client IP addresses
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
<IfDefine [!]parameter-name> ... </IfDefine> |  | svdh | C
Encloses directives that will be processed only if a test is true 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
<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 |  | svdh | B
Action if no coordinates are given when calling an imagemap
Include file-path|directory-path |  | 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
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
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 seconds | 5 | sv | C
Amount of time the server will wait for subsequent requests on a persistent connection
LanguagePriority MIME-lang [MIME-lang] ... |  | svdh | B
The precendence 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
LDAPConnectionTimeout seconds |  | s | E
Specifies the socket connection timeout in seconds
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
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
LDAPTrustedClientCert type directory-path/filename/nickname [password] |  | svdh | 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> |  | svdh | C
Restrict enclosed access controls to only certain HTTP methods
<LimitExcept method [method] ... > ... </LimitExcept> |  | svdh | 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 | 0 | 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 |  | s | M
Maximum length of the queue of pending connections
LoadFile filename [filename] ... |  | s | E
Link in the named object file or library
LoadModule module filename |  | s | 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
LockFile filename | logs/accept.lock | s | M
Location of the accept serialization lock file
LogFormat format|nickname [nickname] | "%h %l %u %t \"%r\" + | sv | B
Describes a format for use in a log file
LogLevel level | warn | sv | C
Controls the verbosity of the ErrorLog
MaxClients number |  | s | M
Maximum number of connections that will be processed simultaneously
MaxKeepAliveRequests number | 100 | sv | C
Number of requests allowed on a persistent connection
MaxMemFree KBytes | 0 | s | M
Maximum amount of memory that the main allocator is allowed to hold without calling `free()`
MaxRanges default | unlimited | none | number-of-ranges | 200 | svd | C
Number of ranges allowed before returning the complete resource
MaxRequestsPerChild number | 10000 | s | M
Limit on the number of requests that an individual child server will handle during its life
MaxRequestsPerThread number | 0 | s | M
Limit on the number of requests that an individual thread will handle during its life
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
MCacheMaxObjectCount value | 1009 | s | E
The maximum number of objects allowed to be placed in the cache
MCacheMaxObjectSize bytes | 10000 | s | E
The maximum size (in bytes) of a document allowed in the cache
MCacheMaxStreamingBuffer size_in_bytes | the smaller of 1000 + | s | E
Maximum amount of a streamed response to buffer in memory before declaring the response uncacheable
MCacheMinObjectSize bytes | 1 | s | E
The minimum size (in bytes) of a document to be allowed in the cache
MCacheRemovalAlgorithm LRU|GDSF | GDSF | s | E
The algorithm used to select documents for removal from the cache
MCacheSize KBytes | 100 | s | E
The maximum amount of memory used by the cache in KBytes
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 containg 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
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
NameVirtualHost addr[:port] |  | s | C
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] ... | All | svdh | C
Configures what features are available in a particular directory
Order ordering | Deny,Allow | dh | B
Controls the default access state and the order in which `Allow` and `Deny` are evaluated.
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
Protocol protocol |  | sv | C
Protocol for a listening socket
ProtocolEcho On|Off | Off | sv | X
Turn the echo server on or off
<Proxy wildcard-url> ...</Proxy> |  | sv | E
Container for directives applied to proxied resources
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 On|Off | Off | sv | E
Override error pages for proxied content
ProxyFtpDirCharset character set | ISO-8859-1 | svd | E
Define the character set for proxied FTP listings
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
Maximium number of proxies that a request can be forwarded through
ProxyPass [path] !|url [key=value key=value ...]] [nocanon] [interpolate] |  | svd | E
Maps remote servers into the local server URL-space
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 | sv | 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 |  | sv | E
Remote proxy used to handle certain requests
ProxyRemoteMatch regex remote-server |  | 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 | 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 ...] |  | d | E
Set various Proxy balancer or member parameters
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
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
RedirectTemp URL-path URL |  | svdh | B
Sends an external temporary redirect asking the client to fetch a different URL
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 set|append|merge|add|unset|edit header [value] [replacement] [early|env=[!]variable] |  | svdh | E
Configure HTTP request headers
RequestReadTimeout [header=timeout[[-maxtimeout],MinRate=rate] [body=timeout[[-maxtimeout],MinRate=rate] |  | sv | E
Set timeout values for receiving request headers and body from client.
Require entity-name [entity-name] ... |  | dh | C
Selects which authenticated users can access a resource
RewriteBase URL-path |  | dh | E
Sets the base URL for per-directory rewrites
RewriteCond TestString CondPattern |  | svdh | E
Defines a condition under which rewriting will take place
RewriteEngine on|off | off | svdh | E
Enables or disables runtime rewriting engine
RewriteLock file-path |  | s | E
Sets the name of the lock file used for `RewriteMap` synchronization
RewriteLog file-path|pipe |  | sv | E
Sets the name of the file used for logging rewrite engine processing
RewriteLogLevel Level | 0 | sv | E
Sets the verbosity of the log file used by the rewrite engine
RewriteMap MapName MapType:MapSource |  | 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 children
RLimitMEM bytes|max [bytes|max] |  | svdh | C
Limits the memory consumption of processes launched by Apache children
RLimitNPROC number|max [number|max] |  | svdh | C
Limits the number of processes that can be launched by processes launched by Apache children
Satisfy Any|All | All | dh | C
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 |  | sv | 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 | logs/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 | B
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://]fully-qualified-domain-name[: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
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
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 |  | 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
SSIEnableAccess on|off | off | dh | B
Enable the -A flag during conditional flow control processing.
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.
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
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 |  | sv | E
Server PEM-encoded X.509 Certificate file
SSLCertificateKeyFile file-path |  | sv | E
Server PEM-encoded Private Key file
SSLCipherSuite cipher-spec | ALL:!ADH:RC4+RSA:+H + | 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|optional | off | sv | E
SSL Engine Operation Switch
SSLFIPS on|off | off | s | E
SSL FIPS mode Switch
SSLHonorCipherOrder flag |  | sv | E
Option to prefer the server's cipher preference order
SSLInsecureRenegotiation flag | off | sv | E
Option to enable support for insecure renegotiation
SSLMutex type | none | s | E
Semaphore for internal mutual exclusion of operations
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 | sv | E
Configure usable SSL protocol flavors
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
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 | off | sv | E
Whether to check the remote server certificates CN field
SSLProxyCheckPeerExpire on|off | off | sv | E
Whether to check if remote server certificate is expired
SSLProxyCipherSuite cipher-spec | ALL:!ADH:RC4+RSA:+H + | svdh | E
Cipher Suite available for negotiation in SSL proxy handshake
SSLProxyEngine on|off | off | sv | E
SSL Proxy Engine Operation Switch
SSLProxyMachineCertificateChainFile filename |  | s | E
File of concatenated PEM-encoded CA certificates to be used by the proxy for choosing a certificate
SSLProxyMachineCertificateFile filename |  | s | E
File of concatenated PEM-encoded client certificates and keys to be used by the proxy
SSLProxyMachineCertificatePath directory |  | s | E
Directory of PEM-encoded client certificates and keys to be used by the proxy
SSLProxyProtocol [+|-]protocol ... | all | 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
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
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
Substitute s/pattern/substitution/[infq] |  | dh | E
Pattern to filter the response content
Suexec On|Off |  | s | C
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 | 300 | 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 behaviour 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
UnsetEnv env-variable [env-variable] ... |  | svdh | B
Removes variables from the environment
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 name and port
User unix-userid | #-1 | s | M
The userid under which the server will answer requests
UserDir directory-filename [directory-filename] ... |  | sv | B
Location of the user-specific directories
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
Win32DisableAcceptEx |  | s | M
Use accept() rather than AcceptEx() to accept network connections
XBitHack on|off|full | off | svdh | B
Parse SSI directives in files with the execute bit set

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