View source for PHP (7)

All configuration is handled inside the pool configuration.

Use the PHP repo found at:

https://deb.sury.org/

After making sure the files are copied for templating:

 truncate --size 0 /etc/php/8.0/fpm/pool.d/www.conf
 truncate --size 0 /etc/php/7.4/fpm/pool.d/www.conf
 truncate --size 0 /etc/php/5.6/fpm/pool.d/www.conf

== /root/php-fpm.7.4.conf ==

 ; Start a new pool named 'www'.
 ; the variable $pool can be used in any directive and will be replaced by the
 ; pool name ('www' here)
 [USERNAME]
 
 ; Per pool prefix
 ; It only applies on the following directives:
 ; - 'access.log'
 ; - '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
 
 ; Unix user/group of processes
 ; Note: The user is mandatory. If the group is not set, the default user's group
 ;       will be used.
 user = USERNAME
 group = USERNAME
 
 ; 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 IPv4 address on
 ;                            a specific port;
 ;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific IPv6 address on
 ;                            a specific port;
 ;   'port'                 - to listen on a TCP socket to all addresses
 ;                            (IPv6 and IPv4-mapped) on a specific port;
 ;   '/path/to/unix/socket' - to listen on a unix socket.
 ; Note: This value is mandatory.
 listen = /home/USERNAME/sock/$pool-fpm.sock
 
 ; Set listen(2) backlog.
 ; Default Value: 511 (-1 on FreeBSD and OpenBSD)
 listen.backlog = 65535
 
 ; 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. The owner
 ; and group can be specified either by name or by their numeric IDs.
 ; Default Values: user and group are set as the running user
 ;                 mode is set to 0660
 listen.owner = USERNAME
 listen.group = USERNAME
 listen.mode = 0666
 ; When POSIX Access Control Lists are supported you can set them using
 ; these options, value is a comma separated list of user/group names.
 ; When set, listen.owner and listen.group are ignored
 ;listen.acl_users =
 ;listen.acl_groups =
 
 ; List of addresses (IPv4/IPv6) 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
 
 ; Specify the nice(2) priority to apply to the pool processes (only if set)
 ; The value can vary from -19 (highest priority) to 20 (lower priority)
 ; Note: - It will only work if the FPM master process is launched as root
 ;       - The pool processes will inherit the master process priority
 ;         unless it specified otherwise
 ; Default Value: no set
 ; process.priority = -19
 
 ; Set the process dumpable flag (PR_SET_DUMPABLE prctl) even if the process user
 ; or group is differrent than the master process user. It allows to create process
 ; core dump and ptrace the process for the pool user.
 ; Default Value: no
 ; process.dumpable = yes
 
 ; 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. With this process management, there will be
 ;             always at least 1 children.
 ;             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.
 ;  ondemand - no children are created at startup. Children will be forked when
 ;             new requests will connect. The following parameter are used:
 ;             pm.max_children           - the maximum number of children that
 ;                                         can be alive at the same time.
 ;             pm.process_idle_timeout   - The number of seconds after which
 ;                                         an idle process 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 when pm is set to 'dynamic' or 'ondemand'.
 ; 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. The below defaults are based on a server without much resources. Don't
 ; forget to tweak pm.* to fit your needs.
 ; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand'
 ; Note: This value is mandatory.
 pm.max_children = 4
 
 ; 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) / 2
 pm.start_servers = 2
 
 ; 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 = 2
 
 ; 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 = 4
 
 ; The number of seconds after which an idle process will be killed.
 ; Note: Used only when pm is set to 'ondemand'
 ; Default Value: 10s
 ;pm.process_idle_timeout = 10s;
 
 ; 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 = 10000
 
 ; The URI to view the FPM status page. If this value is not set, no URI will be
 ; recognized as a status page. It shows the following informations:
 ;   pool                 - the name of the pool;
 ;   process manager      - static, dynamic or ondemand;
 ;   start time           - the date and time FPM has started;
 ;   start since          - number of seconds since FPM has started;
 ;   accepted conn        - the number of request accepted by the pool;
 ;   listen queue         - the number of request in the queue of pending
 ;                          connections (see backlog in listen(2));
 ;   max listen queue     - the maximum number of requests in the queue
 ;                          of pending connections since FPM has started;
 ;   listen queue len     - the size of the socket queue of pending connections;
 ;   idle processes       - the number of idle processes;
 ;   active processes     - the number of active processes;
 ;   total processes      - the number of idle + active processes;
 ;   max active processes - the maximum number of active processes since FPM
 ;                          has started;
 ;   max children reached - number of times, the process limit has been reached,
 ;                          when pm tries to start more children (works only for
 ;                          pm 'dynamic' and 'ondemand');
 ; Value are updated in real time.
 ; Example output:
 ;   pool:                 www
 ;   process manager:      static
 ;   start time:           01/Jul/2011:17:53:49 +0200
 ;   start since:          62636
 ;   accepted conn:        190460
 ;   listen queue:         0
 ;   max listen queue:     1
 ;   listen queue len:     42
 ;   idle processes:       4
 ;   active processes:     11
 ;   total processes:      15
 ;   max active processes: 12
 ;   max children reached: 0
 ;
 ; By default the status page output is formatted as text/plain. Passing either
 ; 'html', 'xml' or 'json' in the 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
 ;   http://www.foo.bar/status?xml
 ;
 ; By default the status page only outputs short status. Passing 'full' in the
 ; query string will also return status for each pool process.
 ; Example:
 ;   http://www.foo.bar/status?full
 ;   http://www.foo.bar/status?json&full
 ;   http://www.foo.bar/status?html&full
 ;   http://www.foo.bar/status?xml&full
 ; The Full status returns for each process:
 ;   pid                  - the PID of the process;
 ;   state                - the state of the process (Idle, Running, ...);
 ;   start time           - the date and time the process has started;
 ;   start since          - the number of seconds since the process has started;
 ;   requests             - the number of requests the process has served;
 ;   request duration     - the duration in µs of the requests;
 ;   request method       - the request method (GET, POST, ...);
 ;   request URI          - the request URI with the query string;
 ;   content length       - the content length of the request (only with POST);
 ;   user                 - the user (PHP_AUTH_USER) (or '-' if not set);
 ;   script               - the main script called (or '-' if not set);
 ;   last request cpu     - the %cpu the last request consumed
 ;                          it's always 0 if the process is not in Idle state
 ;                          because CPU calculation is done when the request
 ;                          processing has terminated;
 ;   last request memory  - the max amount of memory the last request consumed
 ;                          it's always 0 if the process is not in Idle state
 ;                          because memory calculation is done when the request
 ;                          processing has terminated;
 ; If the process is in Idle state, then informations are related to the
 ; last request the process has served. Otherwise informations are related to
 ; the current request being served.
 ; Example output:
 ;   ************************
 ;   pid:                  31330
 ;   state:                Running
 ;   start time:           01/Jul/2011:17:53:49 +0200
 ;   start since:          63087
 ;   requests:             12808
 ;   request duration:     1250261
 ;   request method:       GET
 ;   request URI:          /test_mem.php?N=10000
 ;   content length:       0
 ;   user:                 -
 ;   script:               /home/fat/web/docs/php/test_mem.php
 ;   last request cpu:     0.00
 ;   last request memory:  0
 ;
 ; Note: There is a real-time FPM status monitoring sample web page available
 ;       It's available in: /usr/share/php/7.4/fpm/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
 pm.status_path = /server.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
 ping.path = /server.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 access log file
 ; Default: not set
 access.log = /home/USERNAME/logs/$pool.access.log
 
 ; The access log format.
 ; The following syntax is allowed
 ;  %%: the '%' character
 ;  %C: %CPU used by the request
 ;      it can accept the following format:
 ;      - %{user}C for user CPU only
 ;      - %{system}C for system CPU only
 ;      - %{total}C  for user + system CPU (default)
 ;  %d: time taken to serve the request
 ;      it can accept the following format:
 ;      - %{seconds}d (default)
 ;      - %{miliseconds}d
 ;      - %{mili}d
 ;      - %{microseconds}d
 ;      - %{micro}d
 ;  %e: an environment variable (same as $_ENV or $_SERVER)
 ;      it must be associated with embraces to specify the name of the env
 ;      variable. Some exemples:
 ;      - server specifics like: %{REQUEST_METHOD}e or %{SERVER_PROTOCOL}e
 ;      - HTTP headers like: %{HTTP_HOST}e or %{HTTP_USER_AGENT}e
 ;  %f: script filename
 ;  %l: content-length of the request (for POST request only)
 ;  %m: request method
 ;  %M: peak of memory allocated by PHP
 ;      it can accept the following format:
 ;      - %{bytes}M (default)
 ;      - %{kilobytes}M
 ;      - %{kilo}M
 ;      - %{megabytes}M
 ;      - %{mega}M
 ;  %n: pool name
 ;  %o: output header
 ;      it must be associated with embraces to specify the name of the header:
 ;      - %{Content-Type}o
 ;      - %{X-Powered-By}o
 ;      - %{Transfert-Encoding}o
 ;      - ....
 ;  %p: PID of the child that serviced the request
 ;  %P: PID of the parent of the child that serviced the request
 ;  %q: the query string
 ;  %Q: the '?' character if query string exists
 ;  %r: the request URI (without the query string, see %q and %Q)
 ;  %R: remote IP address
 ;  %s: status (response code)
 ;  %t: server time the request was received
 ;      it can accept a strftime(3) format:
 ;      %d/%b/%Y:%H:%M:%S %z (default)
 ;      The strftime(3) format must be encapsuled in a %{<strftime_format>}t tag
 ;      e.g. for a ISO8601 formatted timestring, use: %{%Y-%m-%dT%H:%M:%S%z}t
 ;  %T: time the log has been written (the request has finished)
 ;      it can accept a strftime(3) format:
 ;      %d/%b/%Y:%H:%M:%S %z (default)
 ;      The strftime(3) format must be encapsuled in a %{<strftime_format>}t tag
 ;      e.g. for a ISO8601 formatted timestring, use: %{%Y-%m-%dT%H:%M:%S%z}t
 ;  %u: remote user
 ;
 ; Default: "%R - %u %t \"%m %r\" %s"
 ;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%"
 
 ; The log file for slow requests
 ; Default Value: not set
 ; Note: slowlog is mandatory if request_slowlog_timeout is set
 slowlog = /home/USERNAME/logs/$pool.slow.log
 
 ; 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 = 3
 
 ; Depth of slow log stack trace.
 ; Default Value: 20
 ;request_slowlog_trace_depth = 20
 
 ; 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
 ;request_terminate_timeout = 0
 
 ; The timeout set by 'request_terminate_timeout' ini option is not engaged after
 ; application calls 'fastcgi_finish_request' or when application has finished and
 ; shutdown functions are being called (registered via register_shutdown_function).
 ; This option will enable timeout limit to be applied unconditionally
 ; even in such cases.
 ; Default Value: no
 ;request_terminate_timeout_track_finished = no
 
 ; Set open file descriptor rlimit.
 ; Default Value: system defined value
 ;rlimit_files = 1024
 
 ; 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 = /var/www
 
 ; 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
 ;catch_workers_output = yes
 
 ; Decorate worker output with prefix and suffix containing information about
 ; the child that writes to the log and if stdout or stderr is used as well as
 ; log level and time. This options is used only if catch_workers_output is yes.
 ; Settings to "no" will output data as written to the stdout or stderr.
 ; Default value: yes
 ;decorate_workers_output = no
 
 ; Clear environment in FPM workers
 ; Prevents arbitrary environment variables from reaching FPM worker processes
 ; by clearing the environment in workers before env vars specified in this
 ; pool configuration are added.
 ; Setting to "no" will make all environment variables available to PHP code
 ; via getenv(), $_ENV and $_SERVER.
 ; Default Value: yes
 ;clear_env = no
 
 ; Limits the extensions of the main script FPM will allow to parse. This can
 ; prevent configuration mistakes on the web server side. You should only limit
 ; FPM to .php extensions to prevent malicious users to use other extensions to
 ; execute php code.
 ; Note: set an empty value to allow all extensions.
 ; Default Value: .php
 security.limit_extensions = .php
 
 ; 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] = /home/USERNAME/logs/$pool-php.error.log
 php_admin_value[log_limit] = 4096
 php_admin_flag[log_errors] = on
 php_admin_value[memory_limit] = 128M
 

== /root/php7.4-fpm.service.template ==

 [Unit]
 Description=PHP 7.4 FastCGI Process Manager - USERNAME
 Documentation=man:php-fpm7.4(8)
 After=network.target

 [Service]
 Type=notify
 ExecStart=/usr/sbin/php-fpm7.4 --nodaemonize --fpm-config /etc/php/7.4/fpm/php-fpm.conf --pid /home/USERNAME/pool/fpm-USERNAME.pid
 ExecStartPost=-/usr/lib/php/php-fpm-socket-helper install /home/USERNAME/sock/DOMAIN-fpm.sock /home/USERNAME/pool/DOMAIN.conf 74
 ExecStopPost=-/usr/lib/php/php-fpm-socket-helper remove /home/USERNAME/sock/DOMAIN-fpm.sock /home/USERNAME/pool/DOMAIN.conf 74
 ExecReload=/bin/kill -USR2 $MAINPID
 User=USERNAME
 Group=USERNAME
 PIDFile=/home/USERNAME/pool/fpm-USERNAME.pid

 [Install]
 WantedBy=multi-user.target