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From "Sheng Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-3652) Increase the concurrent connection number of VR ssh server
Date Fri, 19 Jul 2013 01:17:46 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-3652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713224#comment-13713224
] 

Sheng Yang commented on CLOUDSTACK-3652:
----------------------------------------

Seems it's hard to modify the known_hosts file because VR can be migrated across the host.
After talking with Anthony, we decided to increase the limitation to 1000.
                
> Increase the concurrent connection number of VR ssh server
> ----------------------------------------------------------
>
>                 Key: CLOUDSTACK-3652
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3652
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Network Controller
>    Affects Versions: 4.2.0
>            Reporter: Sheng Yang
>            Assignee: Sheng Yang
>            Priority: Critical
>             Fix For: 4.2.0
>
>
> It blocks CLOUDSTACK-3434.
> By default, VR only allow 10 concurrent connections at the same time. But since we enable
parallel deployment, the number can be ~100.
> We need to increase the MaxSessions and MaxStartups in sshd_config in the VR to prevent
openssh server from dropping the connections.
> But we need some realistic numbers here. It cannot be infinite big.

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