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I am trying to configure my Ubuntu 12.04 VPS (OpenVZ) to reboot when it runs out of memory. To do this I have added following lines to my "/etc/sysctl.conf" file. 

vm.panic_on_oom = 1
kernel.panic = 14

But when I run the configuration using the command "sudo sysctl -p" I get following errors.

error: permission denied on key 'vm.panic_on_oom'
error: permission denied on key 'kernel.panic'

I have tried running the same command as root and found the same error.

Can anyone please point out what am I doing wrong? or how can I fix this?

Thanks in advance.

Jan Hudec
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Jay Bhatt
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1 Answers1

7

OpenVZ is not a virtual machine, it is more like a container – in other words, there is only a single kernel running for both the host and all "VPS"es. This means a kernel panic would bring down the whole system, including every VPS hosted on it, and many kernel settings are shared between the host and all guests.

So you are not allowed to modify those settings because it doesn't make sense to do so.

grawity
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