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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9348) CloudStack Server degrades when a lot of connections on port 8250
Date Mon, 23 May 2016 06:04:12 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295954#comment-15295954
] 

ASF GitHub Bot commented on CLOUDSTACK-9348:
--------------------------------------------

Github user rhtyd commented on the pull request:

    https://github.com/apache/cloudstack/pull/1549#issuecomment-220893971
  
    @swill I ran tests on latest master using packages: http://packages.shapeblue.com/cloudstack/custom/master-latest/
    
    I was able to deploy a zone with two KVM hosts and a mgmt server (on centos6). I was able
to use a cloudmonkey based script and it was able to add multiple hosts without any error;
here is the log and deploy script:
    
    [cloudmonkey.log.txt](https://github.com/apache/cloudstack/files/276870/cloudmonkey.log.txt)
    [deploy-kvm-adv.sh.txt](https://github.com/apache/cloudstack/files/276871/deploy-kvm-adv.sh.txt)
    
    @swill I was then able to launch VMs, see systemvm connect and perform regression tests.
I'm unable to reproduce the issue now, I think master is stable; in case you hit the `addHost`
issue please send me the mgmgt server and agent logs. Thanks.


> CloudStack Server degrades when a lot of connections on port 8250
> -----------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9348
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9348
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Rohit Yadav
>            Assignee: Rohit Yadav
>             Fix For: 4.9.0
>
>
> An intermittent issue was found with a large CloudStack deployment, where servers could
not keep agents connected on port 8250.
> All connections are handled by accept() in NioConnection:
> https://github.com/apache/cloudstack/blob/master/utils/src/main/java/com/cloud/utils/nio/NioConnection.java#L125
> A new connection is handled by accept() which does blocking SSL handshake. A good fix
would be to make this non-blocking and handle expensive tasks in separate threads/pool. This
way the main IO loop won't be blocked and can continue to serve other agents/clients.



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