Apache 2.2 Module-Directive Mapping
One of the high profile projects require performance tuning for the
Apache 2.x running on
Solaris 10.
I have no problem in tuning the
Solaris operating system.
So how about Apache. My approach will be to conduct a minimisation follow by tuning the MaxClients and other related parameters for the default prefork model. However, in order to determine which modules not to be included in the httpd.conf, we need to find out the mapping between module and it's respective directives. I was not able to find anything from the Internet and therefore I decided to work it out myself.
The Apache 2.2 documentation is written as a set of XHTML document and this make life a lot easier. With Tcl and tDOM (DOM implementation in Tcl), I am able to parse the XHTML files and dynamically work out the mapping relationship. With this mapping, I can confidently take out those modules that I do not need in the httpd.conf.
One thing that we need to watch out is that the
XHTML
file has a default XML namespace like this:
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
In the below Tcl program, I will have to assign my own namespace to avoid using local-name() in the
XPath predicate.
package require http
package require tdom
set baseurl "http://httpd.apache.org/docs/2.2/mod/"
set s [http::geturl $baseurl]
set doc0 [dom parse [http::data $s]]
set root0 [$doc0 documentElement]
set xmlns0 [$root0 getAttribute xmlns]
http::cleanup $s
foreach module [$root0 selectNodes -namespace "ns $xmlns0" {//ns:dl/ns:dt/ns:a}] {
set modlink [$module getAttribute href]
set modname [[$module childNodes] nodeValue]
# process each module
set s [http::geturl $baseurl$modlink]
set doc [dom parse [http::data $s]]
set root [$doc documentElement]
set xmlns [$root getAttribute xmlns]
http::cleanup $s
#
foreach directive [$root selectNodes -namespaces "ns $xmlns0" \
{//ns:div[@id="quickview"]/ns:ul[@id="toc"]/ns:li/ns:a/text()}] {
puts "$modname [$directive nodeValue]"
}
$doc delete
}
Output of the module-directive mapping by :
$ tclsh module.tcl | sort | tee bymodule.txt beos CoreDumpDirectory beos Group beos Listen beos ListenBacklog beos MaxClients beos MaxMemFree beos MaxRequestsPerThread beos MaxSpareThreads beos MinSpareThreads beos PidFile beos ReceiveBufferSize beos ScoreBoardFile beos SendBufferSize beos StartThreads beos User corecore core core core core core core core core core core AcceptFilter core AcceptPathInfo core AccessFileName core AddDefaultCharset core AddOutputFilterByType core AllowEncodedSlashes core AllowOverride core AuthName core AuthType core CGIMapExtension core ContentDigest core DefaultType core DocumentRoot core EnableMMAP core EnableSendfile core ErrorDocument core ErrorLog core FileETag core ForceType core HostnameLookups core Include core KeepAlive core KeepAliveTimeout core LimitInternalRecursion core LimitRequestBody core LimitRequestFieldSize core LimitRequestFields core LimitRequestLine core LimitXMLRequestBody core LogLevel core MaxKeepAliveRequests core NameVirtualHost core Options core RLimitCPU core RLimitMEM core RLimitNPROC core Require core Satisfy core ScriptInterpreterSource core ServerAdmin core ServerAlias core ServerName core ServerPath core ServerRoot core ServerSignature core ServerTokens core SetHandler core SetInputFilter core SetOutputFilter core TimeOut core TraceEnable core UseCanonicalName core UseCanonicalPhysicalPort event AcceptMutex event CoreDumpDirectory event EnableExceptionHook event Group event Listen event ListenBacklog event LockFile event MaxClients event MaxMemFree event MaxRequestsPerChild event MaxSpareThreads event MinSpareThreads event PidFile event ScoreBoardFile event SendBufferSize event ServerLimit event StartServers event ThreadLimit event ThreadStackSize event ThreadsPerChild event User mod_actions Action mod_actions Script mod_alias Alias mod_alias AliasMatch mod_alias Redirect mod_alias RedirectMatch mod_alias RedirectPermanent mod_alias RedirectTemp mod_alias ScriptAlias mod_alias ScriptAliasMatch mod_auth_basic AuthBasicAuthoritative mod_auth_basic AuthBasicProvider mod_auth_digest AuthDigestAlgorithm mod_auth_digest AuthDigestDomain mod_auth_digest AuthDigestNcCheck mod_auth_digest AuthDigestNonceFormat mod_auth_digest AuthDigestNonceLifetime mod_auth_digest AuthDigestProvider mod_auth_digest AuthDigestQop mod_auth_digest AuthDigestShmemSize mod_authn_alias mod_authn_anon Anonymous mod_authn_anon Anonymous_LogEmail mod_authn_anon Anonymous_MustGiveEmail mod_authn_anon Anonymous_NoUserID mod_authn_anon Anonymous_VerifyEmail mod_authn_dbd AuthDBDUserPWQuery mod_authn_dbd AuthDBDUserRealmQuery mod_authn_dbm AuthDBMType mod_authn_dbm AuthDBMUserFile mod_authn_default AuthDefaultAuthoritative mod_authn_file AuthUserFile mod_authnz_ldap AuthLDAPBindDN mod_authnz_ldap AuthLDAPBindPassword mod_authnz_ldap AuthLDAPCharsetConfig mod_authnz_ldap AuthLDAPCompareDNOnServer mod_authnz_ldap AuthLDAPDereferenceAliases mod_authnz_ldap AuthLDAPGroupAttribute mod_authnz_ldap AuthLDAPGroupAttributeIsDN mod_authnz_ldap AuthLDAPRemoteUserAttribute mod_authnz_ldap AuthLDAPRemoteUserIsDN mod_authnz_ldap AuthLDAPUrl mod_authnz_ldap AuthzLDAPAuthoritative mod_authz_dbm AuthDBMGroupFile mod_authz_dbm AuthzDBMAuthoritative mod_authz_dbm AuthzDBMType mod_authz_default AuthzDefaultAuthoritative mod_authz_groupfile AuthGroupFile mod_authz_groupfile AuthzGroupFileAuthoritative mod_authz_host Allow mod_authz_host Deny mod_authz_host Order mod_authz_owner AuthzOwnerAuthoritative mod_authz_user AuthzUserAuthoritative mod_autoindex AddAlt mod_autoindex AddAltByEncoding mod_autoindex AddAltByType mod_autoindex AddDescription mod_autoindex AddIcon mod_autoindex AddIconByEncoding mod_autoindex AddIconByType mod_autoindex DefaultIcon mod_autoindex HeaderName mod_autoindex IndexIgnore mod_autoindex IndexOptions mod_autoindex IndexOrderDefault mod_autoindex IndexStyleSheet mod_autoindex ReadmeName mod_cache CacheDefaultExpire mod_cache CacheDisable mod_cache CacheEnable mod_cache CacheIgnoreCacheControl mod_cache CacheIgnoreHeaders mod_cache CacheIgnoreNoLastMod mod_cache CacheLastModifiedFactor mod_cache CacheMaxExpire mod_cache CacheStoreNoStore mod_cache CacheStorePrivate mod_cern_meta MetaDir mod_cern_meta MetaFiles mod_cern_meta MetaSuffix mod_cgi ScriptLog mod_cgi ScriptLogBuffer mod_cgi ScriptLogLength mod_cgid ScriptLog mod_cgid ScriptLogBuffer mod_cgid ScriptLogLength mod_cgid ScriptSock mod_charset_lite CharsetDefault mod_charset_lite CharsetOptions mod_charset_lite CharsetSourceEnc mod_dav Dav mod_dav DavDepthInfinity mod_dav DavMinTimeout mod_dav_fs DavLockDB mod_dav_lock DavGenericLockDB mod_dbd DBDExptime mod_dbd DBDKeep mod_dbd DBDMax mod_dbd DBDMin mod_dbd DBDParams mod_dbd DBDPersist mod_dbd DBDPrepareSQL mod_dbd DBDriver mod_deflate DeflateBufferSize mod_deflate DeflateCompressionLevel mod_deflate DeflateFilterNote mod_deflate DeflateMemLevel mod_deflate DeflateWindowSize mod_dir DirectoryIndex mod_dir DirectorySlash mod_disk_cache CacheDirLength mod_disk_cache CacheDirLevels mod_disk_cache CacheMaxFileSize mod_disk_cache CacheMinFileSize mod_disk_cache CacheRoot mod_dumpio DumpIOInput mod_dumpio DumpIOLogLevel mod_dumpio DumpIOOutput mod_echo ProtocolEcho mod_env PassEnv mod_env SetEnv mod_env UnsetEnv mod_example Example mod_expires ExpiresActive mod_expires ExpiresByType mod_expires ExpiresDefault mod_ext_filter ExtFilterDefine mod_ext_filter ExtFilterOptions mod_file_cache CacheFile mod_file_cache MMapFile mod_filter FilterChain mod_filter FilterDeclare mod_filter FilterProtocol mod_filter FilterProvider mod_filter FilterTrace mod_headers Header mod_headers RequestHeader mod_ident IdentityCheck mod_ident IdentityCheckTimeout mod_imagemap ImapBase mod_imagemap ImapDefault mod_imagemap ImapMenu mod_include SSIEndTag mod_include SSIErrorMsg mod_include SSIStartTag mod_include SSITimeFormat mod_include SSIUndefinedEcho mod_include XBitHack mod_info AddModuleInfo mod_isapi ISAPIAppendLogToErrors mod_isapi ISAPIAppendLogToQuery mod_isapi ISAPICacheFile mod_isapi ISAPIFakeAsync mod_isapi ISAPILogNotSupported mod_isapi ISAPIReadAheadBuffer mod_ldap LDAPCacheEntries mod_ldap LDAPCacheTTL mod_ldap LDAPConnectionTimeout mod_ldap LDAPOpCacheEntries mod_ldap LDAPOpCacheTTL mod_ldap LDAPSharedCacheFile mod_ldap LDAPSharedCacheSize mod_ldap LDAPTrustedClientCert mod_ldap LDAPTrustedGlobalCert mod_ldap LDAPTrustedMode mod_ldap LDAPVerifyServerCert mod_log_config BufferedLogs mod_log_config CookieLog mod_log_config CustomLog mod_log_config LogFormat mod_log_config TransferLog mod_log_forensic ForensicLog mod_mem_cache MCacheMaxObjectCount mod_mem_cache MCacheMaxObjectSize mod_mem_cache MCacheMaxStreamingBuffer mod_mem_cache MCacheMinObjectSize mod_mem_cache MCacheRemovalAlgorithm mod_mem_cache MCacheSize mod_mime AddCharset mod_mime AddEncoding mod_mime AddHandler mod_mime AddInputFilter mod_mime AddLanguage mod_mime AddOutputFilter mod_mime AddType mod_mime DefaultLanguage mod_mime ModMimeUsePathInfo mod_mime MultiviewsMatch mod_mime RemoveCharset mod_mime RemoveEncoding mod_mime RemoveHandler mod_mime RemoveInputFilter mod_mime RemoveLanguage mod_mime RemoveOutputFilter mod_mime RemoveType mod_mime TypesConfig mod_mime_magic MimeMagicFile mod_negotiation CacheNegotiatedDocs mod_negotiation ForceLanguagePriority mod_negotiation LanguagePriority mod_nw_ssl NWSSLTrustedCerts mod_nw_ssl NWSSLUpgradeable mod_nw_ssl SecureListen mod_proxy mod_proxy mod_proxy AllowCONNECT mod_proxy NoProxy mod_proxy ProxyBadHeader mod_proxy ProxyBlock mod_proxy ProxyDomain mod_proxy ProxyErrorOverride mod_proxy ProxyIOBufferSize mod_proxy ProxyMaxForwards mod_proxy ProxyPass mod_proxy ProxyPassReverse mod_proxy ProxyPassReverseCookieDomain mod_proxy ProxyPassReverseCookiePath mod_proxy ProxyPreserveHost mod_proxy ProxyReceiveBufferSize mod_proxy ProxyRemote mod_proxy ProxyRemoteMatch mod_proxy ProxyRequests mod_proxy ProxyTimeout mod_proxy ProxyVia mod_rewrite RewriteBase mod_rewrite RewriteCond mod_rewrite RewriteEngine mod_rewrite RewriteLock mod_rewrite RewriteLog mod_rewrite RewriteLogLevel mod_rewrite RewriteMap mod_rewrite RewriteOptions mod_rewrite RewriteRule mod_setenvif BrowserMatch mod_setenvif BrowserMatchNoCase mod_setenvif SetEnvIf mod_setenvif SetEnvIfNoCase mod_so LoadFile mod_so LoadModule mod_speling CheckCaseOnly mod_speling CheckSpelling mod_ssl SSLCACertificateFile mod_ssl SSLCACertificatePath mod_ssl SSLCADNRequestFile mod_ssl SSLCADNRequestPath mod_ssl SSLCARevocationFile mod_ssl SSLCARevocationPath mod_ssl SSLCertificateChainFile mod_ssl SSLCertificateFile mod_ssl SSLCertificateKeyFile mod_ssl SSLCipherSuite mod_ssl SSLCryptoDevice mod_ssl SSLEngine mod_ssl SSLHonorCipherOrder mod_ssl SSLMutex mod_ssl SSLOptions mod_ssl SSLPassPhraseDialog mod_ssl SSLProtocol mod_ssl SSLProxyCACertificateFile mod_ssl SSLProxyCACertificatePath mod_ssl SSLProxyCARevocationFile mod_ssl SSLProxyCARevocationPath mod_ssl SSLProxyCipherSuite mod_ssl SSLProxyEngine mod_ssl SSLProxyMachineCertificateFile mod_ssl SSLProxyMachineCertificatePath mod_ssl SSLProxyProtocol mod_ssl SSLProxyVerify mod_ssl SSLProxyVerifyDepth mod_ssl SSLRandomSeed mod_ssl SSLRequire mod_ssl SSLRequireSSL mod_ssl SSLSessionCache mod_ssl SSLSessionCacheTimeout mod_ssl SSLUserName mod_ssl SSLVerifyClient mod_ssl SSLVerifyDepth mod_status ExtendedStatus mod_suexec SuexecUserGroup mod_userdir UserDir mod_usertrack CookieDomain mod_usertrack CookieExpires mod_usertrack CookieName mod_usertrack CookieStyle mod_usertrack CookieTracking mod_version mod_vhost_alias VirtualDocumentRoot mod_vhost_alias VirtualDocumentRootIP mod_vhost_alias VirtualScriptAlias mod_vhost_alias VirtualScriptAliasIP mpm_common AcceptMutex mpm_common CoreDumpDirectory mpm_common EnableExceptionHook mpm_common GracefulShutdownTimeout mpm_common Group mpm_common Listen mpm_common ListenBackLog mpm_common LockFile mpm_common MaxClients mpm_common MaxMemFree mpm_common MaxRequestsPerChild mpm_common MaxSpareThreads mpm_common MinSpareThreads mpm_common PidFile mpm_common ReceiveBufferSize mpm_common ScoreBoardFile mpm_common SendBufferSize mpm_common ServerLimit mpm_common StartServers mpm_common StartThreads mpm_common ThreadLimit mpm_common ThreadStackSize mpm_common ThreadsPerChild mpm_common User mpm_netware Listen mpm_netware ListenBacklog mpm_netware MaxMemFree mpm_netware MaxRequestsPerChild mpm_netware MaxSpareThreads mpm_netware MaxThreads mpm_netware MinSpareThreads mpm_netware ReceiveBufferSize mpm_netware SendBufferSize mpm_netware StartThreads mpm_netware ThreadStackSize mpm_winnt CoreDumpDirectory mpm_winnt Listen mpm_winnt ListenBacklog mpm_winnt MaxMemFree mpm_winnt MaxRequestsPerChild mpm_winnt PidFile mpm_winnt ReceiveBufferSize mpm_winnt ScoreBoardFile mpm_winnt SendBufferSize mpm_winnt ThreadLimit mpm_winnt ThreadStackSize mpm_winnt ThreadsPerChild mpm_winnt Win32DisableAcceptEx mpmt_os2 Group mpmt_os2 Listen mpmt_os2 ListenBacklog mpmt_os2 MaxRequestsPerChild mpmt_os2 MaxSpareThreads mpmt_os2 MinSpareThreads mpmt_os2 PidFile mpmt_os2 ReceiveBufferSize mpmt_os2 SendBufferSize mpmt_os2 StartServers mpmt_os2 User prefork AcceptMutex prefork CoreDumpDirectory prefork EnableExceptionHook prefork Group prefork Listen prefork ListenBacklog prefork LockFile prefork MaxClients prefork MaxMemFree prefork MaxRequestsPerChild prefork MaxSpareServers prefork MinSpareServers prefork PidFile prefork ReceiveBufferSize prefork ScoreBoardFile prefork SendBufferSize prefork ServerLimit prefork StartServers prefork User worker AcceptMutex worker CoreDumpDirectory worker EnableExceptionHook worker Group worker Listen worker ListenBacklog worker LockFile worker MaxClients worker MaxMemFree worker MaxRequestsPerChild worker MaxSpareThreads worker MinSpareThreads worker PidFile worker ReceiveBufferSize worker ScoreBoardFile worker SendBufferSize worker ServerLimit worker StartServers worker ThreadLimit worker ThreadStackSize worker ThreadsPerChild worker User
To sort the above based on directive:
$ awk '{print $2, $1}' bymodule.txt | sort | tee bydirective.txt
<AuthnProviderAlias> mod_authn_alias
<Directory> core
<DirectoryMatch> core
<Files> core
<FilesMatch> core
<IfDefine> core
<IfModule> core
<IfVersion> mod_version
<Limit> core
<LimitExcept> core
<Location> core
<LocationMatch> core
<Proxy> mod_proxy
<ProxyMatch> mod_proxy
<VirtualHost> core
AcceptFilter core
AcceptMutex event
AcceptMutex mpm_common
AcceptMutex prefork
AcceptMutex worker
AcceptPathInfo core
AccessFileName core
Action mod_actions
AddAlt mod_autoindex
AddAltByEncoding mod_autoindex
AddAltByType mod_autoindex
AddCharset mod_mime
AddDefaultCharset core
AddDescription mod_autoindex
AddEncoding mod_mime
AddHandler mod_mime
AddIcon mod_autoindex
AddIconByEncoding mod_autoindex
AddIconByType mod_autoindex
AddInputFilter mod_mime
AddLanguage mod_mime
AddModuleInfo mod_info
AddOutputFilter mod_mime
AddOutputFilterByType core
AddType mod_mime
Alias mod_alias
AliasMatch mod_alias
Allow mod_authz_host
AllowCONNECT mod_proxy
AllowEncodedSlashes core
AllowOverride core
Anonymous mod_authn_anon
Anonymous_LogEmail mod_authn_anon
Anonymous_MustGiveEmail mod_authn_anon
Anonymous_NoUserID mod_authn_anon
Anonymous_VerifyEmail mod_authn_anon
AuthBasicAuthoritative mod_auth_basic
AuthBasicProvider mod_auth_basic
AuthDBDUserPWQuery mod_authn_dbd
AuthDBDUserRealmQuery mod_authn_dbd
AuthDBMGroupFile mod_authz_dbm
AuthDBMType mod_authn_dbm
AuthDBMUserFile mod_authn_dbm
AuthDefaultAuthoritative mod_authn_default
AuthDigestAlgorithm mod_auth_digest
AuthDigestDomain mod_auth_digest
AuthDigestNcCheck mod_auth_digest
AuthDigestNonceFormat mod_auth_digest
AuthDigestNonceLifetime mod_auth_digest
AuthDigestProvider mod_auth_digest
AuthDigestQop mod_auth_digest
AuthDigestShmemSize mod_auth_digest
AuthGroupFile mod_authz_groupfile
AuthLDAPBindDN mod_authnz_ldap
AuthLDAPBindPassword mod_authnz_ldap
AuthLDAPCharsetConfig mod_authnz_ldap
AuthLDAPCompareDNOnServer mod_authnz_ldap
AuthLDAPDereferenceAliases mod_authnz_ldap
AuthLDAPGroupAttribute mod_authnz_ldap
AuthLDAPGroupAttributeIsDN mod_authnz_ldap
AuthLDAPRemoteUserAttribute mod_authnz_ldap
AuthLDAPRemoteUserIsDN mod_authnz_ldap
AuthLDAPUrl mod_authnz_ldap
AuthName core
AuthType core
AuthUserFile mod_authn_file
AuthzDBMAuthoritative mod_authz_dbm
AuthzDBMType mod_authz_dbm
AuthzDefaultAuthoritative mod_authz_default
AuthzGroupFileAuthoritative mod_authz_groupfile
AuthzLDAPAuthoritative mod_authnz_ldap
AuthzOwnerAuthoritative mod_authz_owner
AuthzUserAuthoritative mod_authz_user
BrowserMatch mod_setenvif
BrowserMatchNoCase mod_setenvif
BufferedLogs mod_log_config
CGIMapExtension core
CacheDefaultExpire mod_cache
CacheDirLength mod_disk_cache
CacheDirLevels mod_disk_cache
CacheDisable mod_cache
CacheEnable mod_cache
CacheFile mod_file_cache
CacheIgnoreCacheControl mod_cache
CacheIgnoreHeaders mod_cache
CacheIgnoreNoLastMod mod_cache
CacheLastModifiedFactor mod_cache
CacheMaxExpire mod_cache
CacheMaxFileSize mod_disk_cache
CacheMinFileSize mod_disk_cache
CacheNegotiatedDocs mod_negotiation
CacheRoot mod_disk_cache
CacheStoreNoStore mod_cache
CacheStorePrivate mod_cache
CharsetDefault mod_charset_lite
CharsetOptions mod_charset_lite
CharsetSourceEnc mod_charset_lite
CheckCaseOnly mod_speling
CheckSpelling mod_speling
ContentDigest core
CookieDomain mod_usertrack
CookieExpires mod_usertrack
CookieLog mod_log_config
CookieName mod_usertrack
CookieStyle mod_usertrack
CookieTracking mod_usertrack
CoreDumpDirectory beos
CoreDumpDirectory event
CoreDumpDirectory mpm_common
CoreDumpDirectory mpm_winnt
CoreDumpDirectory prefork
CoreDumpDirectory worker
CustomLog mod_log_config
DBDExptime mod_dbd
DBDKeep mod_dbd
DBDMax mod_dbd
DBDMin mod_dbd
DBDParams mod_dbd
DBDPersist mod_dbd
DBDPrepareSQL mod_dbd
DBDriver mod_dbd
Dav mod_dav
DavDepthInfinity mod_dav
DavGenericLockDB mod_dav_lock
DavLockDB mod_dav_fs
DavMinTimeout mod_dav
DefaultIcon mod_autoindex
DefaultLanguage mod_mime
DefaultType core
DeflateBufferSize mod_deflate
DeflateCompressionLevel mod_deflate
DeflateFilterNote mod_deflate
DeflateMemLevel mod_deflate
DeflateWindowSize mod_deflate
Deny mod_authz_host
DirectoryIndex mod_dir
DirectorySlash mod_dir
DocumentRoot core
DumpIOInput mod_dumpio
DumpIOLogLevel mod_dumpio
DumpIOOutput mod_dumpio
EnableExceptionHook event
EnableExceptionHook mpm_common
EnableExceptionHook prefork
EnableExceptionHook worker
EnableMMAP core
EnableSendfile core
ErrorDocument core
ErrorLog core
Example mod_example
ExpiresActive mod_expires
ExpiresByType mod_expires
ExpiresDefault mod_expires
ExtFilterDefine mod_ext_filter
ExtFilterOptions mod_ext_filter
ExtendedStatus mod_status
FileETag core
FilterChain mod_filter
FilterDeclare mod_filter
FilterProtocol mod_filter
FilterProvider mod_filter
FilterTrace mod_filter
ForceLanguagePriority mod_negotiation
ForceType core
ForensicLog mod_log_forensic
GracefulShutdownTimeout mpm_common
Group beos
Group event
Group mpm_common
Group mpmt_os2
Group prefork
Group worker
Header mod_headers
HeaderName mod_autoindex
HostnameLookups core
ISAPIAppendLogToErrors mod_isapi
ISAPIAppendLogToQuery mod_isapi
ISAPICacheFile mod_isapi
ISAPIFakeAsync mod_isapi
ISAPILogNotSupported mod_isapi
ISAPIReadAheadBuffer mod_isapi
IdentityCheck mod_ident
IdentityCheckTimeout mod_ident
ImapBase mod_imagemap
ImapDefault mod_imagemap
ImapMenu mod_imagemap
Include core
IndexIgnore mod_autoindex
IndexOptions mod_autoindex
IndexOrderDefault mod_autoindex
IndexStyleSheet mod_autoindex
KeepAlive core
KeepAliveTimeout core
LDAPCacheEntries mod_ldap
LDAPCacheTTL mod_ldap
LDAPConnectionTimeout mod_ldap
LDAPOpCacheEntries mod_ldap
LDAPOpCacheTTL mod_ldap
LDAPSharedCacheFile mod_ldap
LDAPSharedCacheSize mod_ldap
LDAPTrustedClientCert mod_ldap
LDAPTrustedGlobalCert mod_ldap
LDAPTrustedMode mod_ldap
LDAPVerifyServerCert mod_ldap
LanguagePriority mod_negotiation
LimitInternalRecursion core
LimitRequestBody core
LimitRequestFieldSize core
LimitRequestFields core
LimitRequestLine core
LimitXMLRequestBody core
Listen beos
Listen event
Listen mpm_common
Listen mpm_netware
Listen mpm_winnt
Listen mpmt_os2
Listen prefork
Listen worker
ListenBackLog mpm_common
ListenBacklog beos
ListenBacklog event
ListenBacklog mpm_netware
ListenBacklog mpm_winnt
ListenBacklog mpmt_os2
ListenBacklog prefork
ListenBacklog worker
LoadFile mod_so
LoadModule mod_so
LockFile event
LockFile mpm_common
LockFile prefork
LockFile worker
LogFormat mod_log_config
LogLevel core
MCacheMaxObjectCount mod_mem_cache
MCacheMaxObjectSize mod_mem_cache
MCacheMaxStreamingBuffer mod_mem_cache
MCacheMinObjectSize mod_mem_cache
MCacheRemovalAlgorithm mod_mem_cache
MCacheSize mod_mem_cache
MMapFile mod_file_cache
MaxClients beos
MaxClients event
MaxClients mpm_common
MaxClients prefork
MaxClients worker
MaxKeepAliveRequests core
MaxMemFree beos
MaxMemFree event
MaxMemFree mpm_common
MaxMemFree mpm_netware
MaxMemFree mpm_winnt
MaxMemFree prefork
MaxMemFree worker
MaxRequestsPerChild event
MaxRequestsPerChild mpm_common
MaxRequestsPerChild mpm_netware
MaxRequestsPerChild mpm_winnt
MaxRequestsPerChild mpmt_os2
MaxRequestsPerChild prefork
MaxRequestsPerChild worker
MaxRequestsPerThread beos
MaxSpareServers prefork
MaxSpareThreads beos
MaxSpareThreads event
MaxSpareThreads mpm_common
MaxSpareThreads mpm_netware
MaxSpareThreads mpmt_os2
MaxSpareThreads worker
MaxThreads mpm_netware
MetaDir mod_cern_meta
MetaFiles mod_cern_meta
MetaSuffix mod_cern_meta
MimeMagicFile mod_mime_magic
MinSpareServers prefork
MinSpareThreads beos
MinSpareThreads event
MinSpareThreads mpm_common
MinSpareThreads mpm_netware
MinSpareThreads mpmt_os2
MinSpareThreads worker
ModMimeUsePathInfo mod_mime
MultiviewsMatch mod_mime
NWSSLTrustedCerts mod_nw_ssl
NWSSLUpgradeable mod_nw_ssl
NameVirtualHost core
NoProxy mod_proxy
Options core
Order mod_authz_host
PassEnv mod_env
PidFile beos
PidFile event
PidFile mpm_common
PidFile mpm_winnt
PidFile mpmt_os2
PidFile prefork
PidFile worker
ProtocolEcho mod_echo
ProxyBadHeader mod_proxy
ProxyBlock mod_proxy
ProxyDomain mod_proxy
ProxyErrorOverride mod_proxy
ProxyIOBufferSize mod_proxy
ProxyMaxForwards mod_proxy
ProxyPass mod_proxy
ProxyPassReverse mod_proxy
ProxyPassReverseCookieDomain mod_proxy
ProxyPassReverseCookiePath mod_proxy
ProxyPreserveHost mod_proxy
ProxyReceiveBufferSize mod_proxy
ProxyRemote mod_proxy
ProxyRemoteMatch mod_proxy
ProxyRequests mod_proxy
ProxyTimeout mod_proxy
ProxyVia mod_proxy
RLimitCPU core
RLimitMEM core
RLimitNPROC core
ReadmeName mod_autoindex
ReceiveBufferSize beos
ReceiveBufferSize mpm_common
ReceiveBufferSize mpm_netware
ReceiveBufferSize mpm_winnt
ReceiveBufferSize mpmt_os2
ReceiveBufferSize prefork
ReceiveBufferSize worker
Redirect mod_alias
RedirectMatch mod_alias
RedirectPermanent mod_alias
RedirectTemp mod_alias
RemoveCharset mod_mime
RemoveEncoding mod_mime
RemoveHandler mod_mime
RemoveInputFilter mod_mime
RemoveLanguage mod_mime
RemoveOutputFilter mod_mime
RemoveType mod_mime
RequestHeader mod_headers
Require core
RewriteBase mod_rewrite
RewriteCond mod_rewrite
RewriteEngine mod_rewrite
RewriteLock mod_rewrite
RewriteLog mod_rewrite
RewriteLogLevel mod_rewrite
RewriteMap mod_rewrite
RewriteOptions mod_rewrite
RewriteRule mod_rewrite
SSIEndTag mod_include
SSIErrorMsg mod_include
SSIStartTag mod_include
SSITimeFormat mod_include
SSIUndefinedEcho mod_include
SSLCACertificateFile mod_ssl
SSLCACertificatePath mod_ssl
SSLCADNRequestFile mod_ssl
SSLCADNRequestPath mod_ssl
SSLCARevocationFile mod_ssl
SSLCARevocationPath mod_ssl
SSLCertificateChainFile mod_ssl
SSLCertificateFile mod_ssl
SSLCertificateKeyFile mod_ssl
SSLCipherSuite mod_ssl
SSLCryptoDevice mod_ssl
SSLEngine mod_ssl
SSLHonorCipherOrder mod_ssl
SSLMutex mod_ssl
SSLOptions mod_ssl
SSLPassPhraseDialog mod_ssl
SSLProtocol mod_ssl
SSLProxyCACertificateFile mod_ssl
SSLProxyCACertificatePath mod_ssl
SSLProxyCARevocationFile mod_ssl
SSLProxyCARevocationPath mod_ssl
SSLProxyCipherSuite mod_ssl
SSLProxyEngine mod_ssl
SSLProxyMachineCertificateFile mod_ssl
SSLProxyMachineCertificatePath mod_ssl
SSLProxyProtocol mod_ssl
SSLProxyVerify mod_ssl
SSLProxyVerifyDepth mod_ssl
SSLRandomSeed mod_ssl
SSLRequire mod_ssl
SSLRequireSSL mod_ssl
SSLSessionCache mod_ssl
SSLSessionCacheTimeout mod_ssl
SSLUserName mod_ssl
SSLVerifyClient mod_ssl
SSLVerifyDepth mod_ssl
Satisfy core
ScoreBoardFile beos
ScoreBoardFile event
ScoreBoardFile mpm_common
ScoreBoardFile mpm_winnt
ScoreBoardFile prefork
ScoreBoardFile worker
Script mod_actions
ScriptAlias mod_alias
ScriptAliasMatch mod_alias
ScriptInterpreterSource core
ScriptLog mod_cgi
ScriptLog mod_cgid
ScriptLogBuffer mod_cgi
ScriptLogBuffer mod_cgid
ScriptLogLength mod_cgi
ScriptLogLength mod_cgid
ScriptSock mod_cgid
SecureListen mod_nw_ssl
SendBufferSize beos
SendBufferSize event
SendBufferSize mpm_common
SendBufferSize mpm_netware
SendBufferSize mpm_winnt
SendBufferSize mpmt_os2
SendBufferSize prefork
SendBufferSize worker
ServerAdmin core
ServerAlias core
ServerLimit event
ServerLimit mpm_common
ServerLimit prefork
ServerLimit worker
ServerName core
ServerPath core
ServerRoot core
ServerSignature core
ServerTokens core
SetEnv mod_env
SetEnvIf mod_setenvif
SetEnvIfNoCase mod_setenvif
SetHandler core
SetInputFilter core
SetOutputFilter core
StartServers event
StartServers mpm_common
StartServers mpmt_os2
StartServers prefork
StartServers worker
StartThreads beos
StartThreads mpm_common
StartThreads mpm_netware
SuexecUserGroup mod_suexec
ThreadLimit event
ThreadLimit mpm_common
ThreadLimit mpm_winnt
ThreadLimit worker
ThreadStackSize event
ThreadStackSize mpm_common
ThreadStackSize mpm_netware
ThreadStackSize mpm_winnt
ThreadStackSize worker
ThreadsPerChild event
ThreadsPerChild mpm_common
ThreadsPerChild mpm_winnt
ThreadsPerChild worker
TimeOut core
TraceEnable core
TransferLog mod_log_config
TypesConfig mod_mime
UnsetEnv mod_env
UseCanonicalName core
UseCanonicalPhysicalPort core
User beos
User event
User mpm_common
User mpmt_os2
User prefork
User worker
UserDir mod_userdir
VirtualDocumentRoot mod_vhost_alias
VirtualDocumentRootIP mod_vhost_alias
VirtualScriptAlias mod_vhost_alias
VirtualScriptAliasIP mod_vhost_alias
Win32DisableAcceptEx mpm_winnt
XBitHack mod_include
Let's take a look at the httpd.conf-example (default httpd.conf) file to see what has been loaded in the default configuration.
$ awk '/^[ \t]*#/ || /^[ \t]*$/ {continue} {print}' /etc/apache2/httpd.conf-example
ServerRoot "/usr/apache2"
Listen 80
LoadModule authn_file_module libexec/mod_authn_file.so
LoadModule authn_dbm_module libexec/mod_authn_dbm.so
LoadModule authn_anon_module libexec/mod_authn_anon.so
LoadModule authn_dbd_module libexec/mod_authn_dbd.so
LoadModule authn_default_module libexec/mod_authn_default.so
LoadModule authz_host_module libexec/mod_authz_host.so
LoadModule authz_groupfile_module libexec/mod_authz_groupfile.so
LoadModule authz_user_module libexec/mod_authz_user.so
LoadModule authz_dbm_module libexec/mod_authz_dbm.so
LoadModule authz_owner_module libexec/mod_authz_owner.so
LoadModule authz_default_module libexec/mod_authz_default.so
LoadModule auth_basic_module libexec/mod_auth_basic.so
LoadModule auth_digest_module libexec/mod_auth_digest.so
LoadModule file_cache_module libexec/mod_file_cache.so
LoadModule cache_module libexec/mod_cache.so
LoadModule disk_cache_module libexec/mod_disk_cache.so
LoadModule mem_cache_module libexec/mod_mem_cache.so
LoadModule dbd_module libexec/mod_dbd.so
LoadModule dumpio_module libexec/mod_dumpio.so
LoadModule ext_filter_module libexec/mod_ext_filter.so
LoadModule include_module libexec/mod_include.so
LoadModule filter_module libexec/mod_filter.so
LoadModule deflate_module libexec/mod_deflate.so
LoadModule log_config_module libexec/mod_log_config.so
LoadModule log_forensic_module libexec/mod_log_forensic.so
LoadModule logio_module libexec/mod_logio.so
LoadModule env_module libexec/mod_env.so
LoadModule mime_magic_module libexec/mod_mime_magic.so
LoadModule cern_meta_module libexec/mod_cern_meta.so
LoadModule expires_module libexec/mod_expires.so
LoadModule headers_module libexec/mod_headers.so
LoadModule ident_module libexec/mod_ident.so
LoadModule usertrack_module libexec/mod_usertrack.so
LoadModule unique_id_module libexec/mod_unique_id.so
LoadModule setenvif_module libexec/mod_setenvif.so
LoadModule version_module libexec/mod_version.so
LoadModule proxy_module libexec/mod_proxy.so
LoadModule proxy_connect_module libexec/mod_proxy_connect.so
LoadModule proxy_ftp_module libexec/mod_proxy_ftp.so
LoadModule proxy_http_module libexec/mod_proxy_http.so
LoadModule proxy_ajp_module libexec/mod_proxy_ajp.so
LoadModule proxy_balancer_module libexec/mod_proxy_balancer.so
LoadModule ssl_module libexec/mod_ssl.so
LoadModule mime_module libexec/mod_mime.so
LoadModule dav_module libexec/mod_dav.so
LoadModule status_module libexec/mod_status.so
LoadModule autoindex_module libexec/mod_autoindex.so
LoadModule asis_module libexec/mod_asis.so
LoadModule info_module libexec/mod_info.so
LoadModule suexec_module libexec/mod_suexec.so
LoadModule cgi_module libexec/mod_cgi.so
LoadModule dav_fs_module libexec/mod_dav_fs.so
LoadModule vhost_alias_module libexec/mod_vhost_alias.so
LoadModule negotiation_module libexec/mod_negotiation.so
LoadModule dir_module libexec/mod_dir.so
LoadModule imagemap_module libexec/mod_imagemap.so
LoadModule actions_module libexec/mod_actions.so
LoadModule speling_module libexec/mod_speling.so
LoadModule userdir_module libexec/mod_userdir.so
LoadModule alias_module libexec/mod_alias.so
LoadModule rewrite_module libexec/mod_rewrite.so
<IfModule !mpm_netware_module>
User webservd
Group webservd
</IfModule>
ServerAdmin you@yourhost.com
ServerName 127.0.0.1
DocumentRoot "/var/apache2/htdocs"
<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
</Directory>
<Directory "/var/apache2/htdocs">
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>
<IfModule dir_module>
DirectoryIndex index.html
</IfModule>
<FilesMatch "^\.ht">
Order allow,deny
Deny from all
Satisfy All
</FilesMatch>
ErrorLog /var/apache2/logs/error_log
LogLevel warn
<IfModule log_config_module>
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %b" common
<IfModule logio_module>
# You need to enable mod_logio.c to use %I and %O
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
</IfModule>
CustomLog /var/apache2/logs/access_log common
</IfModule>
<IfModule alias_module>
ScriptAlias /cgi-bin/ "/var/apache2/cgi-bin/"
</IfModule>
<IfModule cgid_module>
</IfModule>
<Directory "/var/apache2/cgi-bin">
AllowOverride None
Options None
Order allow,deny
Allow from all
</Directory>
DefaultType text/plain
<IfModule mime_module>
TypesConfig /etc/apache2/mime.types
AddType application/x-compress .Z
AddType application/x-gzip .gz .tgz
</IfModule>
<IfModule ssl_module>
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
</IfModule>
<IfModule prefork.c>
ListenBacklog 8192
ServerLimit 2048
MaxClients 2048
</IfModule>
So, if we want to remove mod_dav module from the httpd.conf, we need to make sure
Dav, DavDepthInfinity, DavMinTimeout
are not mentioned in the httpd.conf file.
posted by chihungchan at 8:16 AM
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