Add php8.1 service files

etc/systemd/system/php8.1-fpm.service

@@ -0,0 +1,16 @@
+# This service is actually a systemd target,
+# but we are using a service since targets cannot be reloaded.
+
+[Unit]
+Description=The PHP 8.1 FastCGI Process Manager (multi instance master)
+Documentation=man:php-fpm8.1(8)
+After=network.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/bin/true
+ExecReload=/bin/true
+
+[Install]
+WantedBy=multi-user.target

etc/systemd/system/php8.1-fpm@.service

@@ -0,0 +1,35 @@
+[Unit]
+Description=The PHP 8.1 FastCGI Process Manager (instance %i)
+Documentation=man:php-fpm8.1(8)
+After=network.target
+PartOf=php8.1-fpm.service
+ReloadPropagatedFrom=php8.1-fpm.service
+
+[Service] 
+Type=notify
+PIDFile=/run/php/php8.1-fpm-%i.pid
+ExecStart=/usr/sbin/php-fpm8.1 --nodaemonize --fpm-config /etc/php/8.1/fpm/php-fpm-%i.conf
+ExecReload=/bin/kill -USR2 $MAINPID
+LimitNOFILE=100000
+TimeoutStartSec=300
+ProtectSystem=strict
+PrivateTmp=true
+NoNewPrivileges=true
+PrivateDevices=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true
+LockPersonality=true
+SystemCallArchitectures=native
+ReadWritePaths=-/var/log/
+ReadWritePaths=-/var/run/
+ReadWritePaths=-/run/
+InaccessiblePaths=-/root/
+CPUQuota=100%
+MemoryHigh=25%
+MemoryMax=35%
+RuntimeDirectory=php
+RuntimeDirectoryPreserve=yes
+
+[Install]
+WantedBy=multi-user.target

etc/systemd/system/php8.1-fpm@default.service

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+[Unit]
+Description=The PHP 8.1 FastCGI Process Manager
+Documentation=man:php-fpm8.1(8)
+After=network.target
+PartOf=php8.1-fpm.service
+ReloadPropagatedFrom=php8.1-fpm.service
+
+[Service] 
+Type=notify
+PIDFile=/run/php/php8.1-fpm.pid
+ExecStart=/usr/sbin/php-fpm8.1 --nodaemonize --fpm-config /etc/php/8.1/fpm/php-fpm.conf
+ExecReload=/bin/kill -USR2 $MAINPID
+LimitNOFILE=100000
+TimeoutStartSec=300
+ProtectSystem=strict
+PrivateTmp=true
+# sendmail requires it...
+#NoNewPrivileges=true
+PrivateDevices=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true
+LockPersonality=true
+SystemCallArchitectures=native
+ReadWritePaths=-/var/log/
+ReadWritePaths=-/var/run/
+ReadWritePaths=-/run/
+ReadWritePaths=-/var/local/squirrelmail/
+ReadWritePaths=-/var/www/
+ReadWritePaths=-/var/spool/postfix/
+InaccessiblePaths=-/root/
+CPUQuota=100%
+MemoryHigh=25%
+MemoryMax=35%
+RuntimeDirectory=php
+RuntimeDirectoryPreserve=yes
+
+[Install]
+WantedBy=multi-user.target