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From Paul Angus <>
Subject RE: HA in CS 4.1
Date Wed, 24 Jul 2013 20:22:41 GMT
Hi Kirk,

I've seen this behaviour with KVM (I filed bug CloudStack-3535) but we've found XenServer
works fine.

There is a global setting (alert.wait) which is blank by default. This is the number of seconds
CloudStack waits after it loses communication a host before doing anything.  Blank somehow
equals 30 mins in this case.


Paul Angus
S: +44 20 3603 0540 | M: +447711418784 | T: CloudyAngus

-----Original Message-----
From: Kirk Jantzer []
Sent: 24 July 2013 19:11
To: Cloudstack users mailing list
Subject: Re: HA in CS 4.1

2013-07-24 10:08:50,973 DEBUG [cloud.ha.AbstractInvestigatorImpl]
(AgentTaskPool-16:null) host (<HOSTIP>) cannot be pinged, returning null ('I don't know')
2013-07-24 10:08:50,973 DEBUG [cloud.ha.UserVmDomRInvestigator]
(AgentTaskPool-16:null) could not reach agent, could not reach agent's host, returning that
we don't have enough information
2013-07-24 10:08:50,973 DEBUG [cloud.ha.HighAvailabilityManagerImpl]
(AgentTaskPool-16:null) null unable to determine the state of the host.
 Moving on.
2013-07-24 10:08:50,973 DEBUG [cloud.ha.HighAvailabilityManagerImpl]
(AgentTaskPool-16:null) null unable to determine the state of the host.
 Moving on.
2013-07-24 10:08:50,973 WARN  [agent.manager.AgentManagerImpl]
(AgentTaskPool-16:null) Agent state cannot be determined, do nothing

On Wed, Jul 24, 2013 at 2:07 PM, Kirk Jantzer <>wrote:

> Can someone "explain like I'm 5" how HA in CS should work? I have 4.1
> setup with XCP hosts. To simulate a host failure, I've hard powered
> off a host through iDRAC and CS doesn't seem to know about it, at all
> -- the instances still show as running, but I cannot connect to them,
> and the host shows as up in the infrastructure section.
> The instances, including the SSVM, that were on there are "gone" and
> have not been restarted on any of the other hosts.
> --
> Regards,
> Kirk Jantzer
> http://about.met/kirkjantzer


Kirk Jantzer
c: (678) 561-5475
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