root用户运行php-fpm

修改/usr/local/php/etc/php-fpm.conf配置文件
将

user = www
group = www

改为：

user = root
group = root

重启

[root@nginx]# service  php-fpm restart
Gracefully shutting down php-fpm . done
Starting php-fpm [06-Oct-2020 09:10:34] ERROR: [pool www] please specify user and group other than root
[06-Oct-2020 09:10:34] ERROR: FPM initialization failed
 failed

运行 php-fpm -h 可以看到

-R, –allow-to-run-as-root

可见，启动时加参数 -R 即可
修改/etc/init.d/php-fpm
加上R参数：

case "$1" in
        start)
                echo -n "Starting php-fpm "
                $php_fpm_BIN --daemonize -R $php_opts

                if [ "$?" != 0 ] ; then
                        echo " failed"
                        exit 1
                fi

                wait_for_pid created $php_fpm_PID

                if [ -n "$try" ] ; then
                        echo " failed"
                        exit 1
                else
                        echo " done"
                fi
        ;;