[rabbitmq-discuss] Help with my rabbitmq crashing

Emile Joubert emile at rabbitmq.com
Tue Oct 9 11:04:03 BST 2012

On 09/10/12 10:31, Geocast wrote:
> It seems so strange, why the memory allocation fails though there is
> enough free memory there?

Memory allocation failures can have many causes and are difficult to
diagnose without access to the machine. You should check the syslog,
kernel parameters and hardening configuration (if any) and ulimits. You
should also consider adding more swap and tweaking the overcommit ratio.
A forum dedicated to Ubuntu 9.10 or Linux will be able to offer more
comprehensive help.

Other more drastic options you might consider:

Temporarily install more more RAM.

Transfer the database directory to a server with more RAM, while setting
the nodename the same as the original host. Then copy the database
directory back after a clean shutdown.

If you don't need the contents of the queues then the recovery process
can be avoided by discarding the database directory.


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