Unknown Kernel (CentOS Linux 3.14.43-1)

Clemenzas

Member
Jan 16, 2021
5
0
1
Spain
cPanel Access Level
Website Owner
Hello team,

I have had a WHM installation for years, where I host my websites.

I did a new installation of WHM on a new server, bought a new license and started the transfer of content between panels.

My goal was to see which server was faster, just that. I checked that my current server is faster, so I re-enabled the accounts and deleted the new server.

But since then, every four hours I receive this message by email: Unknown Kernel (CentOS Linux 3.14.43-1) sent by cron.

Does anyone know how I can fix this? Could it be a problem for my installation?

Sin-título-1.jpg
 
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andrew.n

Well-Known Member
Jun 9, 2020
519
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Root Administrator
It seems you are using KernelCare as per the emails. Please reach out to the provider where you bought the license from and they should be able to contact CloudLinux about this. Can you also show us the output of /etc/cron.d/kcare-cron file? It was a bug before but as far as I know they fixed it already.
 
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Clemenzas

Member
Jan 16, 2021
5
0
1
Spain
cPanel Access Level
Website Owner
It seems you are using KernelCare as per the emails. Please reach out to the provider where you bought the license from and they should be able to contact CloudLinux about this. Can you also show us the output of /etc/cron.d/kcare-cron file? It was a bug before but as far as I know they fixed it already.
[/CITAR]

[QUOTE = "ZenHostingTravis, publicación: 2818941, miembro: 1006349"]
Hola @ [USER = 1045145] Clemenzas [/ USER]:

Me alegra saber que la migración valió la pena y que el servidor está funcionando más rápido.

¿Está utilizando KernelCare en su nuevo servidor?
[/CITAR]

Sorry, my English is not good and I use an online translator (deepl).

My new server was slower, so I continue to use the same server (the old one).

I haven't installed or modified anything, I have only enabled the accounts (they were disabled by default when making the file copy).

That's why I'm very surprised by this problem with the cron. Should I open a support ticket?
 

vacancy

Well-Known Member
Sep 20, 2012
447
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Turkey
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Root Administrator
You have kernelcare installed on your server and the kernel you are using is not supported.


Also, your kernel is very old and has vulnerabilities. Urgently you should update the kernel.
 

Clemenzas

Member
Jan 16, 2021
5
0
1
Spain
cPanel Access Level
Website Owner
You have kernelcare installed on your server and the kernel you are using is not supported.


Also, your kernel is very old and has vulnerabilities. Urgently you should update the kernel.
[/CITAR]

Thanks for the help, I'm not an expert, but I used a command to see the result:
Kernel: Linux 3.14.43-1

Should I update the kernel?

When I do opdate / upgrade on the server, nothing comes out to actually upgrade.

Thanks for help
 

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andrew.n

Well-Known Member
Jun 9, 2020
519
138
43
EU
cPanel Access Level
Root Administrator
As @vacancy said the solution might be to upgrade your kernel. You can do so by running "yum update kernel" command.
 

cPJustinD

Administrator
Staff member
Jan 12, 2021
33
12
83
Houston
cPanel Access Level
Root Administrator
Hey there! You can check if your kernel has been patched using the following command:

Code:
kcarectl --patch-info
If you see an "Unknown Kernel" in the output, then it is likely that KernelCare has not yet released a patch for the running kernel version on your server. You can also verify the running kernel version using:

Code:
uname -r
You can then verify if that kernel version has been patched at KernelCare Patches

If you find that the kernel is not patched, then it may be time to update your kernel as suggested by @vacancy and @andrew.n.