centos 7用ss命令来查看端口占用和对应进程
mysqld进程在监听4567端口,进程id是2593:
# ss -lnp|grep 4567
tcp LISTEN 0 128 *:4567 *:* users:(("mysqld",2593,11))
2593的父进程是2592:
# ps -ef|grep 2593
mysql 2593 2592 0 04:46 ? 00:00:57 /usr/libexec/mysqld --wsrep-cluster-address=gcomm://