At Mon, 1 Feb 2010 09:49:24 -0800 (PST) CentOS mailing list centos@centos.org wrote:

R-Elists wrote:

...

i forgot...

is it necessary to reboot after glibc* yum updates on 4.x and 5.x or any centos for that matter...

Should not be, but as with all library updates applications that are running when the update is applied won't get the update until they are restarted. Often times the updates are so minor that restarts are not critical.

Often times rebooting is the easiest method for the update to fully take effect or you can manually restart stuff.

I'm not sure if RPM automatically restarts services when system libraries change(I haven't seen it do this myself). In Debian by contrast for example when you update glibc, it will scan for running services that use it and will prompt you to restart them as part of the upgrade process.

Updating glibc always seems to restart sshd (one gets a message about this during the update phase).

The only thing that *requires* a reboot is a kernel update. Everything else would just need a process restart.

nate

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