Annotation of loncom/httpd.conf, revision 1.1

1.1     ! harris41    1: ##
        !             2: ## httpd.conf -- Apache HTTP server configuration file
        !             3: ##
        !             4: 
        !             5: # This is the main server configuration file. See URL http://www.apache.org/
        !             6: # for instructions.
        !             7: 
        !             8: # Do NOT simply read the instructions in here without understanding
        !             9: # what they do, if you are unsure consult the online docs. You have been
        !            10: # warned.  
        !            11: 
        !            12: # Originally by Rob McCool
        !            13: 
        !            14: # ServerType is either inetd, or standalone.
        !            15: 
        !            16: ServerType standalone
        !            17: 
        !            18: # If you are running from inetd, go to "ServerAdmin".
        !            19: 
        !            20: # Port: The port the standalone listens to. For ports < 1023, you will
        !            21: # need httpd to be run as root initially.
        !            22: 
        !            23: Port 80
        !            24: 
        !            25: # HostnameLookups: Log the names of clients or just their IP numbers
        !            26: #   e.g.   www.apache.org (on) or 204.62.129.132 (off)
        !            27: # The default is off because it'd be overall better for the net if people
        !            28: # had to knowingly turn this feature on.
        !            29: 
        !            30: HostnameLookups off
        !            31: 
        !            32: # If you wish httpd to run as a different user or group, you must run
        !            33: # httpd as root initially and it will switch.  
        !            34: 
        !            35: # User/Group: The name (or #number) of the user/group to run httpd as.
        !            36: #  On SCO (ODT 3) use User nouser and Group nogroup
        !            37: #  On HPUX you may not be able to use shared memory as nobody, and the
        !            38: #  suggested workaround is to create a user www and use that user.
        !            39: #  NOTE that some kernels refuse to setgid(Group) or semctl(IPC_SET)
        !            40: #  when the value of (unsigned)Group is above 60000; 
        !            41: #  don't use Group nobody on these systems!
        !            42: 
        !            43: User www
        !            44: Group users
        !            45: 
        !            46: # ServerAdmin: Your address, where problems with the server should be
        !            47: # e-mailed.
        !            48: 
        !            49: ServerAdmin korte@lite.msu.edu
        !            50: 
        !            51: # ServerRoot: The directory the server's config, error, and log files
        !            52: # are kept in.
        !            53: # NOTE!  If you intend to place this on a NFS (or otherwise network)
        !            54: # mounted filesystem then please read the LockFile documentation,
        !            55: # you will save yourself a lot of trouble.
        !            56: 
        !            57: ServerRoot /etc/httpd
        !            58: 
        !            59: # BindAddress: You can support virtual hosts with this option. This option
        !            60: # is used to tell the server which IP address to listen to. It can either
        !            61: # contain "*", an IP address, or a fully qualified Internet domain name.
        !            62: # See also the VirtualHost directive.
        !            63: 
        !            64: #BindAddress *
        !            65: 
        !            66: # ErrorLog: The location of the error log file. If this does not start
        !            67: # with /, ServerRoot is prepended to it.
        !            68: 
        !            69: ErrorLog logs/error_log
        !            70: 
        !            71: # LogLevel: Control the number of messages logged to the error_log.
        !            72: # Possible values include: debug, info, notice, warn, error, crit,
        !            73: # alert, emerg.
        !            74: 
        !            75: LogLevel warn
        !            76: 
        !            77: # Dynamic Shared Object (DSO) Support
        !            78: #
        !            79: # To be able to use the functionality of a module which was built as a DSO you
        !            80: # have to place corresponding `LoadModule' lines at this location so the
        !            81: # directives contained in it are actually available _before_ they are used.
        !            82: # Please read the file README.DSO in the Apache 1.3 distribution for more
        !            83: # details about the DSO mechanism and run `httpd -l' for the list of already
        !            84: # built-in (statically linked and thus always available) modules in your httpd
        !            85: # binary.
        !            86: #
        !            87: # Example:
        !            88: # LoadModule foo_module libexec/mod_foo.so
        !            89: #
        !            90: # Documentation for modules is in "/home/httpd/manual/mod" in HTML format.
        !            91: 
        !            92: #LoadModule mmap_static_module modules/mod_mmap_static.so
        !            93: LoadModule env_module         modules/mod_env.so
        !            94: LoadModule config_log_module  modules/mod_log_config.so
        !            95: LoadModule agent_log_module   modules/mod_log_agent.so
        !            96: LoadModule referer_log_module modules/mod_log_referer.so
        !            97: #LoadModule mime_magic_module  modules/mod_mime_magic.so
        !            98: LoadModule mime_module        modules/mod_mime.so
        !            99: LoadModule negotiation_module modules/mod_negotiation.so
        !           100: LoadModule status_module      modules/mod_status.so
        !           101: LoadModule info_module        modules/mod_info.so
        !           102: LoadModule includes_module    modules/mod_include.so
        !           103: LoadModule autoindex_module   modules/mod_autoindex.so
        !           104: LoadModule dir_module         modules/mod_dir.so
        !           105: LoadModule cgi_module         modules/mod_cgi.so
        !           106: LoadModule asis_module        modules/mod_asis.so
        !           107: LoadModule imap_module        modules/mod_imap.so
        !           108: LoadModule action_module      modules/mod_actions.so
        !           109: #LoadModule speling_module     modules/mod_speling.so
        !           110: LoadModule userdir_module     modules/mod_userdir.so
        !           111: LoadModule proxy_module       modules/libproxy.so
        !           112: LoadModule alias_module       modules/mod_alias.so
        !           113: LoadModule rewrite_module     modules/mod_rewrite.so
        !           114: LoadModule access_module      modules/mod_access.so
        !           115: LoadModule auth_module        modules/mod_auth.so
        !           116: LoadModule anon_auth_module   modules/mod_auth_anon.so
        !           117: #LoadModule dbm_auth_module    modules/mod_auth_dbm.so
        !           118: LoadModule db_auth_module     modules/mod_auth_db.so
        !           119: LoadModule digest_module      modules/mod_digest.so
        !           120: #LoadModule cern_meta_module   modules/mod_cern_meta.so
        !           121: LoadModule expires_module     modules/mod_expires.so
        !           122: LoadModule headers_module     modules/mod_headers.so
        !           123: LoadModule usertrack_module   modules/mod_usertrack.so
        !           124: #LoadModule example_module     modules/mod_example.so
        !           125: #LoadModule unique_id_module   modules/mod_unique_id.so
        !           126: LoadModule setenvif_module    modules/mod_setenvif.so
        !           127: 
        !           128: # Extra Modules
        !           129: #LoadModule php_module         modules/mod_php.so
        !           130: #LoadModule php3_module        modules/libphp3.so
        !           131: LoadModule perl_module        modules/libperl.so
        !           132: 
        !           133: #  Reconstruction of the complete module list from all available modules
        !           134: #  (static and shared ones) to achieve correct module execution order.
        !           135: #  [WHENEVER YOU CHANGE THE LOADMODULE SECTION ABOVE UPDATE THIS, TOO]
        !           136: ClearModuleList
        !           137: #AddModule mod_mmap_static.c
        !           138: AddModule mod_env.c
        !           139: AddModule mod_log_config.c
        !           140: AddModule mod_log_agent.c
        !           141: AddModule mod_log_referer.c
        !           142: #AddModule mod_mime_magic.c
        !           143: AddModule mod_mime.c
        !           144: AddModule mod_negotiation.c
        !           145: AddModule mod_status.c
        !           146: AddModule mod_info.c
        !           147: AddModule mod_include.c
        !           148: AddModule mod_autoindex.c
        !           149: AddModule mod_dir.c
        !           150: AddModule mod_cgi.c
        !           151: AddModule mod_asis.c
        !           152: AddModule mod_imap.c
        !           153: AddModule mod_actions.c
        !           154: #AddModule mod_speling.c
        !           155: AddModule mod_userdir.c
        !           156: AddModule mod_proxy.c
        !           157: AddModule mod_alias.c
        !           158: AddModule mod_rewrite.c
        !           159: AddModule mod_access.c
        !           160: AddModule mod_auth.c
        !           161: AddModule mod_auth_anon.c
        !           162: #AddModule mod_auth_dbm.c
        !           163: AddModule mod_auth_db.c
        !           164: AddModule mod_digest.c
        !           165: #AddModule mod_cern_meta.c
        !           166: AddModule mod_expires.c
        !           167: AddModule mod_headers.c
        !           168: AddModule mod_usertrack.c
        !           169: #AddModule mod_example.c
        !           170: #AddModule mod_unique_id.c
        !           171: AddModule mod_so.c
        !           172: AddModule mod_setenvif.c
        !           173: 
        !           174: # Extra Modules
        !           175: #AddModule mod_php.c
        !           176: #AddModule mod_php3.c
        !           177: AddModule mod_perl.c
        !           178: 
        !           179: 
        !           180: # The following directives define some format nicknames for use with
        !           181: # a CustomLog directive (see below).
        !           182: 
        !           183: LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
        !           184: LogFormat "%h %l %u %t \"%r\" %>s %b" common
        !           185: LogFormat "%{Referer}i -> %U" referer
        !           186: LogFormat "%{User-agent}i" agent
        !           187: 
        !           188: # The location of the access logfile (Common Logfile Format).
        !           189: # If this does not start with /, ServerRoot is prepended to it.
        !           190: 
        !           191: CustomLog logs/access_log common
        !           192: 
        !           193: # If you would like to have an agent and referer logfile uncomment the
        !           194: # following directives.
        !           195: 
        !           196: #CustomLog logs/referer_log referer
        !           197: #CustomLog logs/agent_log agent
        !           198: 
        !           199: # If you prefer a single logfile with access, agent and referer information
        !           200: # (Combined Logfile Format) you can use the following directive.
        !           201: 
        !           202: #CustomLog logs/access_log combined
        !           203: 
        !           204: # PidFile: The file the server should log its pid to
        !           205: PidFile /var/run/httpd.pid
        !           206: 
        !           207: # ScoreBoardFile: File used to store internal server process information.
        !           208: # Not all architectures require this.  But if yours does (you'll know because
        !           209: # this file is created when you run Apache) then you *must* ensure that
        !           210: # no two invocations of Apache share the same scoreboard file.
        !           211: ScoreBoardFile /var/run/httpd.scoreboard
        !           212: 
        !           213: # The LockFile directive sets the path to the lockfile used when Apache
        !           214: # is compiled with either USE_FCNTL_SERIALIZED_ACCEPT or
        !           215: # USE_FLOCK_SERIALIZED_ACCEPT. This directive should normally be left at
        !           216: # its default value. The main reason for changing it is if the logs
        !           217: # directory is NFS mounted, since the lockfile MUST BE STORED ON A LOCAL
        !           218: # DISK. The PID of the main server process is automatically appended to
        !           219: # the filename. 
        !           220: #
        !           221: #LockFile /var/lock/httpd.lock
        !           222: 
        !           223: # ServerName allows you to set a host name which is sent back to clients for
        !           224: # your server if it's different than the one the program would get (i.e. use
        !           225: # "www" instead of the host's real name).
        !           226: #
        !           227: # Note: You cannot just invent host names and hope they work. The name you 
        !           228: # define here must be a valid DNS name for your host. If you don't understand
        !           229: # this, ask your network administrator.
        !           230: 
        !           231: #ServerName new.host.name
        !           232: 
        !           233: # UseCanonicalName:  (new for 1.3)  With this setting turned on, whenever
        !           234: # Apache needs to construct a self-referencing URL (a url that refers back
        !           235: # to the server the response is coming from) it will use ServerName and
        !           236: # Port to form a "canonical" name.  With this setting off, Apache will
        !           237: # use the hostname:port that the client supplied, when possible.  This
        !           238: # also affects SERVER_NAME and SERVER_PORT in CGIs.
        !           239: UseCanonicalName on
        !           240: 
        !           241: # CacheNegotiatedDocs: By default, Apache sends Pragma: no-cache with each
        !           242: # document that was negotiated on the basis of content. This asks proxy
        !           243: # servers not to cache the document. Uncommenting the following line disables
        !           244: # this behavior, and proxies will be allowed to cache the documents.
        !           245: 
        !           246: #CacheNegotiatedDocs
        !           247: 
        !           248: # Timeout: The number of seconds before receives and sends time out
        !           249: 
        !           250: Timeout 300
        !           251: 
        !           252: # KeepAlive: Whether or not to allow persistent connections (more than
        !           253: # one request per connection). Set to "Off" to deactivate.
        !           254: 
        !           255: KeepAlive On
        !           256: 
        !           257: # MaxKeepAliveRequests: The maximum number of requests to allow
        !           258: # during a persistent connection. Set to 0 to allow an unlimited amount.
        !           259: # We reccomend you leave this number high, for maximum performance.
        !           260: 
        !           261: MaxKeepAliveRequests 100
        !           262: 
        !           263: # KeepAliveTimeout: Number of seconds to wait for the next request
        !           264: 
        !           265: KeepAliveTimeout 15
        !           266: 
        !           267: # Server-pool size regulation.  Rather than making you guess how many
        !           268: # server processes you need, Apache dynamically adapts to the load it
        !           269: # sees --- that is, it tries to maintain enough server processes to
        !           270: # handle the current load, plus a few spare servers to handle transient
        !           271: # load spikes (e.g., multiple simultaneous requests from a single
        !           272: # Netscape browser).
        !           273: 
        !           274: # It does this by periodically checking how many servers are waiting
        !           275: # for a request.  If there are fewer than MinSpareServers, it creates
        !           276: # a new spare.  If there are more than MaxSpareServers, some of the
        !           277: # spares die off.  These values are probably OK for most sites ---
        !           278: 
        !           279: MinSpareServers 8
        !           280: MaxSpareServers 20
        !           281: 
        !           282: # Number of servers to start --- should be a reasonable ballpark figure.
        !           283: 
        !           284: StartServers 10
        !           285: 
        !           286: # Limit on total number of servers running, i.e., limit on the number
        !           287: # of clients who can simultaneously connect --- if this limit is ever
        !           288: # reached, clients will be LOCKED OUT, so it should NOT BE SET TOO LOW.
        !           289: # It is intended mainly as a brake to keep a runaway server from taking
        !           290: # Unix with it as it spirals down...
        !           291: 
        !           292: MaxClients 150
        !           293: 
        !           294: # MaxRequestsPerChild: the number of requests each child process is
        !           295: #  allowed to process before the child dies.
        !           296: #  The child will exit so as to avoid problems after prolonged use when
        !           297: #  Apache (and maybe the libraries it uses) leak.  On most systems, this
        !           298: #  isn't really needed, but a few (such as Solaris) do have notable leaks
        !           299: #  in the libraries.
        !           300: 
        !           301: MaxRequestsPerChild 100
        !           302: 
        !           303: # Proxy Server directives. Uncomment the following line to
        !           304: # enable the proxy server:
        !           305: 
        !           306: #ProxyRequests On
        !           307: 
        !           308: # To enable the cache as well, edit and uncomment the following lines:
        !           309: 
        !           310: #CacheRoot /var/cache/httpd
        !           311: #CacheSize 5
        !           312: #CacheGcInterval 4
        !           313: #CacheMaxExpire 24
        !           314: #CacheLastModifiedFactor 0.1
        !           315: #CacheDefaultExpire 1
        !           316: #NoCache a_domain.com another_domain.edu joes.garage_sale.com
        !           317: 
        !           318: # Listen: Allows you to bind Apache to specific IP addresses and/or
        !           319: # ports, in addition to the default. See also the VirtualHost command
        !           320: 
        !           321: #Listen 3000
        !           322: #Listen 12.34.56.78:80
        !           323: 
        !           324: # VirtualHost: Allows the daemon to respond to requests for more than one
        !           325: # server address, if your server machine is configured to accept IP packets
        !           326: # for multiple addresses. This can be accomplished with the ifconfig 
        !           327: # alias flag, or through kernel patches like VIF.
        !           328: 
        !           329: # Any httpd.conf or srm.conf directive may go into a VirtualHost command.
        !           330: # See also the BindAddress entry.
        !           331:  
        !           332: #<VirtualHost host.some_domain.com>
        !           333: #ServerAdmin webmaster@host.some_domain.com
        !           334: #DocumentRoot /www/docs/host.some_domain.com
        !           335: #ServerName host.some_domain.com
        !           336: #ErrorLog logs/host.some_domain.com-error_log
        !           337: #TransferLog logs/host.some_domain.com-access_log
        !           338: #</VirtualHost>
        !           339: 

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