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https://issues.apache.org/jira/browse/VCL-503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Kurth updated VCL-503:
---------------------------

    Fix Version/s:     (was: 2.3)
                   2.4
    
> Persistent SSH connection, add timeout to hung SSH processes
> ------------------------------------------------------------
>
>                 Key: VCL-503
>                 URL: https://issues.apache.org/jira/browse/VCL-503
>             Project: VCL
>          Issue Type: Improvement
>          Components: vcld (backend)
>    Affects Versions: 2.2.1
>            Reporter: Andy Kurth
>            Assignee: Andy Kurth
>             Fix For: 2.4
>
>
> SSH processes issued from the management node to the computer being loaded 
> occasionally hang for a very long time or indefinitely.  This causes the 
> reservation process to hang.
> This problem usually occurs soon after the computer begins to respond to SSH 
> after it has been reloaded.  vcld detects that it is responding and begins to 
> issue commands.  The SSH service/daemon is probably still being initialized 
> on the computer.  The SSH command hangs and does not fail because it makes an 
> initial connection, a hiccup occurs, and the SSH service on the computer runs 
> normally.  Setting SSH options such as ServerAlive* or TCPKeepAlive doesn't 
> help because the computer responds to these messages.
> Code should be added to timeout the SSH command process after a configurable 
> amount of time.

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