• Leigh Stoller's avatar
    Bring the cluster monitor "inhouse", rather then depending on the jfed · d7c4230e
    Leigh Stoller authored
    monitoring system.
    
    New portal_monitor daemon does a GetVersion/ListResources call at each
    of the clusters every five minutes, and updates the new table in the
    DB called apt_aggregate_status. We calculate free/inuse counts for
    physical nodes and a free count for VMs. Failure to contact the
    aggregate for more then 10 minutes sets the aggregate as down, since
    from our perspective if we cannot get to it, the cluster is down.
    
    Unlike the jfed monitoring system, we are not going to try to
    instantiate a new experiment or ssh into it. Wait and see if that is
    necessary in our context.
    
    On the instantiate page, generate a json structure for each cluster,
    similar the one described in issue #172 by Keith. This way we can easily
    switch the existing code over to this new system, but fail back to the
    old mechanism if this turn out to be a bust.
    
    Some other related changes to how we hand cluster into the several web
    pages.
    d7c4230e
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