E21-unable to bind listening socket for address '127.0.0.1:9000': Address already in use

启动php报错：

[root@T-Ansible-v-szzb etc]# /application/php/sbin/php-fpm 
[01-Apr-2018 18:47:27] ERROR: unable to bind listening socket for address '127.0.0.1:9000': Address already in use (98)
[01-Apr-2018 18:47:27] ERROR: FPM initialization failed
[root@T-Ansible-v-szzb etc]# lsof -i:9000

原因是9000端口已经被占用。

解决： killall php-fpm 

然后重新启动一下即可

[root@T-Ansible-v-szzb etc]# lsof -i:9000
[root@T-Ansible-v-szzb etc]# /application/php/sbin/php-fpm 
[root@T-Ansible-v-szzb etc]# lsof -i:9000
COMMAND   PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
php-fpm 10912 root    7u  IPv4 26927553      0t0  TCP localhost:cslistener (LISTEN)
php-fpm 10913  www    0u  IPv4 26927553      0t0  TCP localhost:cslistener (LISTEN)
php-fpm 10914  www    0u  IPv4 26927553      0t0  TCP localhost:cslistener (LISTEN)