1、找到占用該端口的程序
lsof -i:端口号
2、使用kill指令幹掉它
kill -9 pid
3、重新開機Nginx即可
[[email protected] _data]# lsof -i:8000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
docker-pr 3006 root 4u IPv4 240485358 0t0 TCP *:irdmi (LISTEN)
docker-pr 3011 root 4u IPv6 240485369 0t0 TCP *:irdmi (LISTEN)
[[email protected] _data]# kill -9 3006