Linux Service Management Custom scripts

Need to start multiple MySQL instances on the server today

The new MySQL instance can not be managed with mysqld_multi, so it has customized a mysql_3307 service, with service management

You can look at the service code, which are simple shell scripts.

The principle of service is to go to/etc/init.d to find the corresponding service script, and then invoke the script, the service's second parameter is passed to the invocation of the services as the first parameter

Therefore, you can write a script under/ETC/INIT.D, define the corresponding start,stop,status in the script, or you can add some other actions on your own, and you can add an execution permission.

Here is my mysql_3307 definition script:

Start () {n=$ (netstat -ntlp |grep 3307|grep -v  "grep 3307" |wc -l) if [   $n  -ne 0 ];then  echo  "server is already running!"   exit 0fimysqld_multi --defaults-extra-file=/etc/my_3307.cnf --user=root start  3307if [ $? -eq 0 ];then echo  "Service mysql_3307 start  successful  "else echo " Service mysql_3307 start fail "Fi}stop () {n=$ (netstat  -ntlp |grep 3307|grep -v  "grep 3307" |wc -l) if [  $n  -eq  0 ];then  echo  "server is not running!" fimysqld_multi --defaults-extra-file=/etc/my_3307.cnf --user=root stop 3307if [  $? -eq 0 ];then echo  "service mysql_3307 stop successful " Else  echo  "Service mysql_3307 stop fail" Fi}sTatus () {ps -ef |grep 3307|grep -v  "grep 3307"}case $1 instart)   start;; Stop)  stop;; Status)  status;; *) echo  ' service accept arguments start|stop|status ' Esac

This article is from the "Epimetheus" blog, make sure to keep this source http://suzhao.blog.51cto.com/4376617/1696537

Linux Service Management Custom scripts