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KernelCare
Tried out the free trial. Pretty straight forward. Only question is does this patch everything or just security/critical bug patches? Looks like the latter as far as I can tell even though they sort of imply, on first glance, that it does everything and you "never have to reboot again".
Doesn't update the actual uname -r kernel version. Only the version as shown from /usr/bin/kcarectl --info.
So do people still update their kernels the old fashioned way once in awhile? To get all updates and not just the security/critical stuff? What's the consensus on this as far as best practices?
Any gotchas if I yum update vzkernel and reboot with KernelCare installed? According to their FAQ that is not a problem as it detects the version installed patches each time it runs. What happens if I uninstall it. Do the applied kpatches get uninstalled too?
Comments
It patches just security updates. I still do "yum update" but I don't reboot unless I really need to. Never had an issue when I did reboot with KernelCare installed. Can't comment on the uninstall question.
Only issue I've had so far with KernelCare was a bug that crashed our KVM nodes but they fixed it relatively quickly (info here).
/usr/bin/kcare-uname
It works wonders. Not much difference in reliability between this or Ksplice, but I like the CloudLinux family of products much more than Oracle.
I'll probably bite the bullet. I guess it's time. Seems to be a pretty good solution.
I use it for a game server and it seems to work fine.