Re: [Xen-API] Help : How to Trace all of VM lifecycle events?

[Jon Ludlam <jonathan.ludlam@xxxxxxxxxxxxx>]

On 31/10/13 07:53, Youngsang Shin wrote:

Hi,

I'm looking for a method to trace all of lifecycle events for each of VMs in XenServers.

To monitor the below example information:

1) to build a hierarchy of VMs

 : which VM is a parent of some VMs (which VM was copied from)

2) every single lifecycle event of each VM

 : when it was created, shutdowned, restarted, copied, live-migrated, etc

I've tried to parse the log, xensource.log. However, it doesn't log every lifecycle events clearly. It's pretty hard to follow each VM lifecycle command in the log.

At this point, I'm thinking of a way to watch XAPI events. But, I'm not sure if it would nicely work without any harsh complication. 

Is there any nice way to trace all of such lifecycle events of VM? 

If you're into parsing logs, audit.log might be a better choice. I don't think we log things initiated from inside the guest, though - for example, an internal reboot.

Event watching should probably give you what you want - but unless you were watching all the time you may miss transients, e.g. power-state changes. You can register to see only updates to VMs, which would cut down on the amount of uninteresting stuff you'd otherwise have to ignore.

Jon

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