how can i stop/start MySQL and Apache when the service is down?

enterume

Does anyone have any idea on this? Because just in case the mysql or apache service suddenly down at anytime, I have a crontab base on may be every 10 minute , to check both service whether is up. If not the script will help me start them.

jstarkey

This is highly dependent on the distro, but for standard Red Hat 7.2+:

/etc/rc.d/init.d/httpd restart

will restart apache and:

/etc/rc.d/init.d/mysqld restart

will restart mysql.

There are many ways both can be installed, so you really need to supply more info, like: were they compiled or were they installed via a package manager.

enterume

Hi,

Basically, I instally MySQL+Apache+PHP via binary source in my Redhat 7.x.

I realise that if install via the RPM package, it actually will auto start the HTTPD and MYSQL automatically if i shut it down.

So, I wondering whether I need to write a script(PHP?) to detect if the MySQL or Apache service is not runnign or error, i will restart/start it immedietly. Can I do that? or there is another way to do it?

Thanks
Louis

jstarkey

There is a way. First thing that comes to mind, using PHP, is checking for their PID (process id) files.

If you can deal with 99.99% uptime, and you're fairly available, netsaint and a pager will accomplish things much more efficiently. Netsaint allows you to run a command in the event that a service is down. It also has plugins for any reasonable service.

enterume

Hi,

I would appreciate if you can tell me where can I look into , if I want to use PHP to check the pid serve my server.

or may be some possible way I can run a script to check the get daemon list from my pc?

THanks
Luis