Marcus Christie created AIRAVATA-2373:
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             Summary: Increase open file descriptor limits for RabbitMQ server
                 Key: AIRAVATA-2373
                 URL: https://issues.apache.org/jira/browse/AIRAVATA-2373
             Project: Airavata
          Issue Type: Bug
          Components: GFac
            Reporter: Marcus Christie
            Assignee: Marcus Christie


Ran into a problem on gw56 where GFac wasn't able to make a connection to 
RabbitMQ because RabbitMQ hit the open file descriptor limit of 1024.

Using 
http://clouddoc.stratus.com/1.5.1.0/en-us/Content/Help/P03_Support/C02_InstallGuide/C05_OpenStackInstall/T_RabbitMQLimits.htm
 as a guide I created a file called /etc/default/rabbitmq-server on gw56 with 
the following contents:
{noformat}
ulimit -n 65536
{noformat}

Then I restarted RabbitMQ.  I verified the new limit:
{noformat}
[root@gw56 ~]# grep -e Limit -e files /proc/$(cat /var/run/rabbitmq/pid)/limits
Limit                     Soft Limit           Hard Limit           Units     
Max open files            65536                65536                files     
{noformat}

Then I restarted GFac and it was able to connect to the process_launch queue 
again.

It would be good to research if this is the best way to increase open file 
limits and then get it into the Ansible scripts.




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