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Old 05-25-2012, 04:14 AM   #1
vp0619520
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operation before shutdown the server


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
Code:
shutdown -h now
 
Old 05-25-2012, 04:21 AM   #2
pan64
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according to the man page you do not need to stop services.
 
Old 05-25-2012, 04:24 AM   #3
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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
 
Old 05-25-2012, 04:33 AM   #4
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Quote:
Originally Posted by cliffordw View Post
Hi there,

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).

Clifford
Thanks very much for the rapidly reply! The OS of that server is Ubuntu 9 64bit.I have a glance at the path
Code:
/etc/rc2.d/
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.
 
Old 05-25-2012, 04:39 AM   #5
pan64
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with those apps you can safely use shutdown
 
Old 05-25-2012, 04:42 AM   #6
vp0619520
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with those apps you can safely use shutdown
Ok,I really appreciate that!
 
Old 05-25-2012, 05:07 AM   #7
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Quote:
Originally Posted by vp0619520 View Post
Thanks very much for the rapidly reply! The OS of that server is Ubuntu 9 64bit.I have a glance at the path
Code:
/etc/rc2.d/
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?
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.
 
Old 05-25-2012, 05:09 AM   #8
catkin
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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.
 
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Old 05-25-2012, 05:12 AM   #9
catkin
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Quote:
Originally Posted by cliffordw View Post
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.
That depends on the distro. Slackware, for example, does have a /etc/rc0.d directory but it is empty after a default installation.
 
Old 05-25-2012, 06:35 AM   #10
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Quote:
Originally Posted by catkin View Post
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.
 
Old 05-25-2012, 06:50 AM   #11
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Quote:
Originally Posted by cliffordw View Post
The OP mentioned in post #4 that [s]he is running Ubuntu.
Oops missed that. Sorry.
 
Old 05-25-2012, 07:45 AM   #12
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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.
 
  


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