Does Kernelcare eventually stop releasing patches for old kernels?
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  1. Scott Mutter
  2. Tuesday, 26 February 2019
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I've got several CentOS 6 servers. One of those servers was rebooted over the weekend and suddenly I'm getting told that Kernelcare updates are available for that server. But none of the other CentOS 6 servers have updates available

The server that was rebooted:

# uname -r
2.6.32-754.10.1.el6.x86_64
# kcarectl --check
No patches applied, but some are available, run 'kcarectl --update'.
# kcarectl --uname
2.6.32-754.10.1.el6.x86_64
# kcarectl --version
2.16-5



A server that has not been rebooted:

# uname -r
2.6.32-696.18.7.el6.x86_64
# kcarectl --check
The latest patch is applied.
# kcarectl --uname
2.6.32-754.9.1.el6
# kcarectl --version
2.16-5



To me, this would seem to indicate something is amiss. Do we have to reboot our Kernelcare servers periodically to rebase them up-to-date kernels? Doesn't that kind of defeat the point of rebootless kernel updates?
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  1. 28.02.2019 10:02:53
  2. # 1
Posts: 187
Joined: 31.01.2017
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Scott,

The patches are there for the older one (2.6.32-696.18.7.el6) - you can see that the latest patch is applied. We support CentOS 6 since 2.6.32-279.2.1.el6 (six years old), so most kernels should be supported.

It seems the kernel on the first system was updated the usual 'yum update' way during reboot, but KernelCare hasn't applied patches for some reason. Can you please check - has it updated by itself now or there's still 'No patches applied' ?
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