通过/etc/rc.local实现开机自动拉起服务

添加服务到/etc/rc.local

如自动拉起apache服务：

/etc/rc.local：

#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
 
touch /var/lock/subsys/local
/usr/sbin/apachectl start

服务是关闭的

[root@limt ~]# chkconfig --list|grep http
httpd           0:关闭  1:关闭  2:关闭  3:关闭  4:关闭  5:关闭  6:关闭
 
[root@limt httpd]# reboot
 
Broadcast message from root@limt
        (/dev/pts/1) at 21:25 ...
 
The system is going down for reboot NOW!

开机后http进程已经启动：

[root@limt ~]# ps -ef|grep http
root      2907     1  0 21:29 ?        00:00:00 /usr/sbin/nss_pcache 163842 off /etc/httpd/alias
root      2909     1  0 21:29 ?        00:00:00 /usr/sbin/httpd -k start
root      2984  2909  0 21:29 ?        00:00:00 /usr/bin/crlhelper 196611 2909 /etc/httpd/alias
apache    2987  2909  0 21:29 ?        00:00:00 /usr/sbin/httpd -k start
apache    2988  2909  0 21:29 ?        00:00:00 /usr/sbin/httpd -k start
apache    2989  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2990  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2991  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2992  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2993  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2994  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start
apache    2995  2909  0 21:30 ?        00:00:00 /usr/sbin/httpd -k start

对于有些服务最好在启动前先停止服务，因为有些服务进程有LOCK文件，如果异常停机后LOCK文件没有删除，在随机启动的时候会报服务已启动，通过在启动前先停止服务开消除LOCK文件来正常启动服务

如：

#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
 
touch /var/lock/subsys/local
/usr/sbin/apachectl stop
/usr/sbin/apachectl start