[CentOS] When should I reboot?

Sat Apr 13 14:19:27 UTC 2019
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On 4/13/19 3:32 AM, Kenneth Porter wrote:
> I reboot when I yum update to a new kernel or systemd, which seems to 
> come out about once a month. Should I do it for this week's glibc? Is 
> that "core" enough to justify a reboot or should I wait for the next 
> kernel update?

This is basically your decision, and you seem to know what update 
brings. On an uptime note: in my observation since about the time kernel 
2.6 was introduced Linux has to be rebooted on average every 45 days 
(either kernel or glibc security update). This was mainly what made me 
move my servers from CentOS Linux to FreeBSD.


> I know the glibc update was mainly to handle the new 
> Japanese calendar, so that shouldn't affect my usage. So my question is 
> more about how shared libraries work and whether anything bad would 
> happen with different forks of running services (mainly the mail suite 
> with dovecot and the various content scanners launched by sendmail) 
> running different versions of the library based on when they were 
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Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247