centos7设置rc.local开机执行命令
在Centos7下,rc.local文件,开机默认是不执行的
它是个软链接
1 2 | [root@data-1-1 ~] # ll /etc/rc.local lrwxrwxrwx. 1 root root 13 Apr 8 17:11 /etc/rc . local -> rc.d /rc . local |
实际文件不具备执行权限,设置开机启动
1 2 3 | [root@data-1-1 ~] # ll /etc/rc.d/rc.local -rw-r--r--. 1 root root 524 Jun 20 09:12 /etc/rc .d /rc . local [root@data-1-1 ~] # chmod +x /etc/rc.d/rc.local |
脚本里加入开机执行命令的脚本
1 2 3 4 5 6 | [root@data-1-1 ~] # tail -2 /etc/rc.local systemctl stop keepalived /etc/init .d /haproxy stop [root@data-1-1 ~] # ll /etc/rc.local lrwxrwxrwx. 1 root root 13 Apr 8 17:11 /etc/rc . local -> rc.d /rc . local [root@data-1-1 ~] # |
之前此机器部署安装了haproxy和Keepalived
重启机器测试。haproxy和Keepalived开机之后被关闭。通过开机执行命令方式
1 2 3 4 5 6 7 8 | [root@data-1-1 ~] # netstat -lntp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID /Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 828 /sshd tcp6 0 0 :::22 :::* LISTEN 828 /sshd [root@data-1-1 ~] # ps -ef |grep keep root 942 892 0 09:17 pts /0 00:00:00 grep --colour=auto keep [root@data-1-1 ~] # |
其它部分,和本文不相干
查看所有开机启动的服务
1 2 3 4 | [root@linux-node1 ~] # systemctl list-units --type=service 禁用epmd systemctl stop epmd@0.0.0.0.socket systemctl stop epmd@0.0.0.0 |
xxh实测:rc.local文件,开机默认是不执行的,它是个软链接,虽然软连接有x权限,但是实际文件不具备执行权限,所以我们经常得编辑完/etc/rc.local之后 chmod +x /etc/rc.d/rc.local
一般可以像老男孩这个老师一样开机挂载光盘