跟nginx一样都是进程占用，记录下
[root@localhost pazzn]# systemctl status php-fpm.service ● php-fpm-72.service - LSB: starts php-fpm Loaded: loaded (/etc/rc.d/init.d/php-fpm-72; bad; vendor preset: disabled) Active: inactive (dead) Docs: man:systemd-sysv-generator(8) Warning: php-fpm-72.service changed on disk. Run 'systemctl daemon-reload' to reload units. [root@localhost pazzn]# systemctl start php-fpm.service Warning: php-fpm.service changed on disk. Run 'systemctl daemon-reload' to reload units. Job for php-fpm-72.service failed because the control process exited with error code. See "systemctl status php-fpm-72.service" and "journalctl -xe" for details. [root@localhost pazzn]# systemctl daemon-reload [root@localhost pazzn]# systemctl start php-fpm.service Job for php-fpm-56.service failed because the control process exited with error code. See "systemctl status php-fpm-56.service" and "journalctl -xe" for details. [root@localhost pazzn]# systemctl start php-fpm-56.service Job for php-fpm-56.service failed because the control process exited with error code. See "systemctl status php-fpm-56.service" and "journalctl -xe" for details. [root@localhost pazzn]# systemctl status php-fpm-56.service ● php-fpm-56.service - LSB: starts php-fpm Loaded: loaded (/etc/rc.d/init.d/php-fpm-56; bad; vendor preset: disabled) Active: failed (Result: exit-code) since Mon 2019-07-22 16:52:47 CST; 7s ago Docs: man:systemd-sysv-generator(8) Process: 29005 ExecStart=/etc/rc.d/init.d/php-fpm-56 start (code=exited, status=1/FAILURE) Jul 22 16:52:47 localhost.localdomain systemd[1]: Starting LSB: starts php-fpm... Jul 22 16:52:47 localhost.localdomain php-fpm-56[29005]: Starting php-fpm [22-Jul-2019 16:52:47] ERROR: An another FPM instance se...6.sock Jul 22 16:52:47 localhost.localdomain php-fpm-56[29005]: [22-Jul-2019 16:52:47] ERROR: FPM initialization failed Jul 22 16:52:47 localhost.localdomain php-fpm-56[29005]: failed Jul 22 16:52:47 localhost.localdomain systemd[1]: php-fpm-56.service: control process exited, code=exited status=1 Jul 22 16:52:47 localhost.localdomain systemd[1]: Failed to start LSB: starts php-fpm. Jul 22 16:52:47 localhost.localdomain systemd[1]: Unit php-fpm-56.service entered failed state. Jul 22 16:52:47 localhost.localdomain systemd[1]: php-fpm-56.service failed. Hint: Some lines were ellipsized, use -l to show in full. [root@localhost pazzn]# ps -e | grep php-fpm 28745 ? 00:00:00 php-fpm 28746 ? 00:00:00 php-fpm 28747 ? 00:00:00 php-fpm 28748 ? 00:00:00 php-fpm 28749 ? 00:00:00 php-fpm 28750 ? 00:00:00 php-fpm [root@localhost pazzn]# kill -9 28745 [root@localhost pazzn]# kill -9 28746 [root@localhost pazzn]# kill -9 28747 [root@localhost pazzn]# kill -9 28748 [root@localhost pazzn]# kill -9 28749 [root@localhost pazzn]# kill -9 28750 [root@localhost pazzn]# ps -e | grep php-fpm [root@localhost pazzn]# systemctl start php-fpm-56.service [root@localhost pazzn]# systemctl status php-fpm-56.service ● php-fpm-56.service - LSB: starts php-fpm Loaded: loaded (/etc/rc.d/init.d/php-fpm-56; bad; vendor preset: disabled) Active: active (running) since Mon 2019-07-22 16:53:44 CST; 9s ago Docs: man:systemd-sysv-generator(8) Process: 29024 ExecStart=/etc/rc.d/init.d/php-fpm-56 start (code=exited, status=0/SUCCESS) CGroup: /system.slice/php-fpm-56.service ├─29026 php-fpm: master process (/www/server/php/56/etc/php-fpm.conf) ├─29027 php-fpm: pool www ├─29028 php-fpm: pool www ├─29029 php-fpm: pool www ├─29030 php-fpm: pool www └─29031 php-fpm: pool www Jul 22 16:53:44 localhost.localdomain systemd[1]: Starting LSB: starts php-fpm... Jul 22 16:53:44 localhost.localdomain php-fpm-56[29024]: Starting php-fpm done Jul 22 16:53:44 localhost.localdomain systemd[1]: Started LSB: starts php-fpm. [root@localhost pazzn]#