[enh] Simplify and keep only set values in php-fpm configuration

conf/php-fpm.conf

@@ -1,246 +1,72 @@
-; Start a new pool named 'www'.
-; the variable $pool can we used in any directive and will be replaced by the
-; pool name ('www' here)
 [#POOLNAME#]
-
-; Per pool prefix
-; It only applies on the following directives:
-; - 'slowlog'
-; - 'listen' (unixsocket)
-; - 'chroot'
-; - 'chdir'
-; - 'php_values'
-; - 'php_admin_values'
-; When not set, the global prefix (or /usr) applies instead.
-; Note: This directive can also be relative to the global prefix.
-; Default Value: none
-;prefix = /path/to/pools/$pool
-
 ; The address on which to accept FastCGI requests.
-; Valid syntaxes are:
-;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on
-;                            a specific port;
-;   'port'                 - to listen on a TCP socket to all addresses on a
-;                            specific port;
-;   '/path/to/unix/socket' - to listen on a unix socket.
-; Note: This value is mandatory.
 listen = /var/run/php5-fpm-#POOLNAME#.sock
 
-; Set listen(2) backlog. A value of '-1' means unlimited.
-; Default Value: 128 (-1 on FreeBSD and OpenBSD)
-;listen.backlog = -1
-
-; List of ipv4 addresses of FastCGI clients which are allowed to connect.
-; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original
-; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address
-; must be separated by a comma. If this value is left blank, connections will be
-; accepted from any ip address.
-; Default Value: any
-;listen.allowed_clients = 127.0.0.1
-
-; Set permissions for unix socket, if one is used. In Linux, read/write
-; permissions must be set in order to allow connections from a web server. Many
-; BSD-derived systems allow connections regardless of permissions.
-; Default Values: user and group are set as the running user
-;                 mode is set to 0666
+; Set permissions for unix socket, if one is used.
 listen.owner = www-data
 listen.group = www-data
 listen.mode = 0600
 
-; Unix user/group of processes
-; Note: The user is mandatory. If the group is not set, the default user's group
-;       will be used.
+; Unix user/group of processes.
 user = #POOLNAME#
 group = #POOLNAME#
 
 ; Choose how the process manager will control the number of child processes.
-; Possible Values:
-;   static  - a fixed number (pm.max_children) of child processes;
-;   dynamic - the number of child processes are set dynamically based on the
-;             following directives:
-;             pm.max_children      - the maximum number of children that can
-;                                    be alive at the same time.
-;             pm.start_servers     - the number of children created on startup.
-;             pm.min_spare_servers - the minimum number of children in 'idle'
-;                                    state (waiting to process). If the number
-;                                    of 'idle' processes is less than this
-;                                    number then some children will be created.
-;             pm.max_spare_servers - the maximum number of children in 'idle'
-;                                    state (waiting to process). If the number
-;                                    of 'idle' processes is greater than this
-;                                    number then some children will be killed.
-; Note: This value is mandatory.
 pm = dynamic
 
 ; The number of child processes to be created when pm is set to 'static' and the
 ; maximum number of child processes to be created when pm is set to 'dynamic'.
-; This value sets the limit on the number of simultaneous requests that will be
-; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
-; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
-; CGI.
-; Note: Used when pm is set to either 'static' or 'dynamic'
-; Note: This value is mandatory.
 pm.max_children = 6
 
 ; The number of child processes created on startup.
-; Note: Used only when pm is set to 'dynamic'
-; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
 pm.start_servers = 3
 
 ; The desired minimum number of idle server processes.
-; Note: Used only when pm is set to 'dynamic'
-; Note: Mandatory when pm is set to 'dynamic'
 pm.min_spare_servers = 3
 
 ; The desired maximum number of idle server processes.
-; Note: Used only when pm is set to 'dynamic'
-; Note: Mandatory when pm is set to 'dynamic'
 pm.max_spare_servers = 5
 
 ; The number of requests each child process should execute before respawning.
-; This can be useful to work around memory leaks in 3rd party libraries. For
-; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
-; Default Value: 0
 pm.max_requests = 500
 
 ; The URI to view the FPM status page. If this value is not set, no URI will be
-; recognized as a status page. By default, the status page shows the following
-; information:
-;   accepted conn        - the number of request accepted by the pool;
-;   pool                 - the name of the pool;
-;   process manager      - static or dynamic;
-;   idle processes       - the number of idle processes;
-;   active processes     - the number of active processes;
-;   total processes      - the number of idle + active processes.
-;   max children reached - number of times, the process limit has been reached,
-;                          when pm tries to start more children (works only for
-;                          pm 'dynamic')
-; The values of 'idle processes', 'active processes' and 'total processes' are
-; updated each second. The value of 'accepted conn' is updated in real time.
-; Example output:
-;   accepted conn:        12073
-;   pool:                 www
-;   process manager:      static
-;   idle processes:       35
-;   active processes:     65
-;   total processes:      100
-;   max children reached: 1
-; By default the status page output is formatted as text/plain. Passing either
-; 'html' or 'json' as a query string will return the corresponding output
-; syntax. Example:
-;   http://www.foo.bar/status
-;   http://www.foo.bar/status?json
-;   http://www.foo.bar/status?html
-; Note: The value must start with a leading slash (/). The value can be
-;       anything, but it may not be a good idea to use the .php extension or it
-;       may conflict with a real PHP file.
-; Default Value: not set
+; recognized as a status page.
 pm.status_path = /fpm-status
 
 ; The ping URI to call the monitoring page of FPM. If this value is not set, no
-; URI will be recognized as a ping page. This could be used to test from outside
-; that FPM is alive and responding, or to
-; - create a graph of FPM availability (rrd or such);
-; - remove a server from a group if it is not responding (load balancing);
-; - trigger alerts for the operating team (24/7).
-; Note: The value must start with a leading slash (/). The value can be
-;       anything, but it may not be a good idea to use the .php extension or it
-;       may conflict with a real PHP file.
-; Default Value: not set
+; URI will be recognized as a ping page.
 ping.path = /ping
 
-; This directive may be used to customize the response of a ping request. The
-; response is formatted as text/plain with a 200 response code.
-; Default Value: pong
-;ping.response = pong
-
 ; The timeout for serving a single request after which the worker process will
-; be killed. This option should be used when the 'max_execution_time' ini option
-; does not stop script execution for some reason. A value of '0' means 'off'.
-; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
-; Default Value: 0
+; be killed.
 request_terminate_timeout = 1d
 
 ; The timeout for serving a single request after which a PHP backtrace will be
 ; dumped to the 'slowlog' file. A value of '0s' means 'off'.
-; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
-; Default Value: 0
 request_slowlog_timeout = 5s
 
-; The log file for slow requests
-; Default Value: not set
-; Note: slowlog is mandatory if request_slowlog_timeout is set
+; The log file for slow requests.
 slowlog = /var/log/nginx/#POOLNAME#.slow.log
 
 ; Set open file descriptor rlimit.
-; Default Value: system defined value
 rlimit_files = 4096
 
 ; Set max core size rlimit.
-; Possible Values: 'unlimited' or an integer greater or equal to 0
-; Default Value: system defined value
 rlimit_core = 0
 
-; Chroot to this directory at the start. This value must be defined as an
-; absolute path. When this value is not set, chroot is not used.
-; Note: you can prefix with '$prefix' to chroot to the pool prefix or one
-; of its subdirectories. If the pool prefix is not set, the global prefix
-; will be used instead.
-; Note: chrooting is a great security feature and should be used whenever
-;       possible. However, all PHP paths will be relative to the chroot
-;       (error_log, sessions.save_path, ...).
-; Default Value: not set
-;chroot =
-
 ; Chdir to this directory at the start.
-; Note: relative path can be used.
-; Default Value: current directory or / when chroot
 chdir = #DESTDIR#
 
-; Redirect worker stdout and stderr into main error log. If not set, stdout and
-; stderr will be redirected to /dev/null according to FastCGI specs.
-; Note: on highloaded environement, this can cause some delay in the page
-; process time (several ms).
-; Default Value: no
+; Redirect worker stdout and stderr into main error log.
 catch_workers_output = yes
 
-; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from
-; the current environment.
-; Default Value: clean env
-;env[HOSTNAME] = $HOSTNAME
-;env[PATH] = /usr/local/bin:/usr/bin:/bin
-;env[TMP] = /tmp
-;env[TMPDIR] = /tmp
-;env[TEMP] = /tmp
-
-; Additional php.ini defines, specific to this pool of workers. These settings
-; overwrite the values previously defined in the php.ini. The directives are the
-; same as the PHP SAPI:
-;   php_value/php_flag             - you can set classic ini defines which can
-;                                    be overwritten from PHP call 'ini_set'.
-;   php_admin_value/php_admin_flag - these directives won't be overwritten by
-;                                     PHP call 'ini_set'
-; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.
-
-; Defining 'extension' will load the corresponding shared extension from
-; extension_dir. Defining 'disable_functions' or 'disable_classes' will not
-; overwrite previously defined php.ini values, but will append the new value
-; instead.
-
-; Note: path INI options can be relative and will be expanded with the prefix
-; (pool, global or /usr)
-
-; Default Value: nothing is defined by default except the values in php.ini and
-;                specified at startup with the -d argument
-;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f www@my.domain.com
-;php_flag[display_errors] = off
-;php_admin_value[error_log] = /var/log/fpm-php.www.log
-;php_admin_flag[log_errors] = on
-;php_admin_value[memory_limit] = 32M
+; Do not clear environment in FPM workers.
+clear_env = no
 
+; Additional php.ini defines, specific to this pool of workers.
 php_value[upload_max_filesize] = 10G
 php_value[post_max_size] = 10G
 php_value[session.save_path] = #DESTDIR#/lib/private/session/
 php_value[default_charset] = UTF-8
 php_value[always_populate_raw_post_data] = -1
-clear_env = no