Unable to fork: Cannot allocate memory

29 Sep


Some times we get error while entering in to the VPS server
vzctl enter ###,
We get the errorlike
“Unable to fork: Cannot allocate memory”

For eliminating the error just follow the below mentioned steps:

check the container id in cat /proc/user_beancounters by firing the command
cat cat /proc/user_beancounters | grep container ID
Then you will be able to see
Container ID:  kmemsize        2505478    2538648   11055923   11377049          0

So the memory is consumed,
vzctl set container ID –kmemsize 12752512:12752512 –save
Now restart the container
vzctl restart container ID


I my case I have just restarted the VPS container 😛

Thatss it!!
Now try to enter to the VPS container and you will not receive the error.

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Posted by on September 29, 2011 in Uncategorized


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