Hi team ,

I have a question, I want to shutdown the server in order to add some memory.There are several services running in this server:Mysql,apache and so on.I want to konw do I need to stop these services at first before I run the shutdown command

according to the man page you do not need to stop services.

Hi there,

On all Linux distributions I've ever used, you don't need to manually shut down services that are in packages supplied by the distro (i.e. in an RPM/DEB/whatever package). They are shut down automatically as part of the system shutdown process when you run "shutdown -h now". This would most certainly apply to services like mysql and apache.

The only things you may need to shut down manually are services that you might have written yourself, or installed in a non-standard way. Even the shutdown for these can be automated by writing startup & shutdown scripts. The exact location for these depends on the distro you are running, though (often /etc/rc.d or /etc/init.d).

I hope this helps. If not, tell us which distro you are running, so someone can try and help with more specific information.

Regards,

Clifford

Thanks very much for the rapidly reply! The OS of that server is Ubuntu 9 64bit.I have a glance at the path I only found some scripts which filename start by "S",but no one start with"K".Dose the system can also stop these services automatically?Actrually there are only three app running in this server mysql,apache2,glassfish.I found first of them are installed in a standard way,and the other I can stop it manually.

with those apps you can safely use shutdown

Ok,I really appreciate that!

The shutdown scripts should be in /etc/rc0.d. Have a look at https://help.ubuntu.com/community/UpstartHowto for an explanation of the process.

Towards the end of the shutdown process, after the K* shutdown scripts have been run, the shutdown procedure sends signal 15/SIGTERM to all remaining process then pauses (5 seconds on Slackware) then sends signal 9/SIGKILL to all remaining processes.

The design intention is that the services/daemons that do not have K* scripts are designed to be able to shut down quickly on receipt of SIGTERM, before the SIGKILL (which cannot be ignored) mops up any remaining processes.

1 members found this post helpful.

That depends on the distro. Slackware, for example, does have a /etc/rc0.d directory but it is empty after a default installation.

Yes, I agree, and said as much in post #3. The OP mentioned in post #4 that [s]he is running Ubuntu.

Oops missed that. Sorry.

Thanks all.I have found some "K*"scripts in "/etc/rc0.d/".And I also restart the server with "shutdown" command.The server is running normally.