Gracefully shutting down php-fpm . done
Starting php-fpm [22-Jun-2018 16:10:02] NOTICE: PHP message: PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/memcached.so' - /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/memcached.so: cannot open shared object file: No such file or directory in Unknown on line 0
done
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]
Starting Memcached...
Starting memcached:  done
Memcached install failed!


lnmp1.5   php 5.6.36版本

没有具体安装过程的错误信息没法确定