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HA not working on one host

Hi guys,

We have an issue with our ESXi setup. HA is just not working on one of the hosts. kill host A, works great, VMs start on the other side. Kill host B, and nothing happens. It just does not seem to recognise that the other host is gone. No errors no nothing :(

A bit about our set up. We have two Proliant G7’s running ESXi 4.1 attached to a lefthand SAN using iSCSI as the storage interface.

Any help would be fantastic, thanks
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liminal
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liminal
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1 Solution
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Check DNS, Name Resolution on both hosts, check gateways are reachable on both hosts.
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bgoeringCommented:
Go through this checklist to diagnose: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1001596

For example I have seen this type of behavior if the licensing isn't properly installed on one of the hosts. Is there any error configuring HA on the host or cluster>\?
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liminalAuthor Commented:
No, no errors @ all. We are using it as a trial to start with.

Nothing wrong with the gateways ect, host pings other host and gateway with no issue. Actually I would have thought if it couldn’t, it would be trying to start the VMs, not ignoring them… know what I mean
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liminalAuthor Commented:
yeah I have read about "Insufficient resources to satisfy HA failover level on cluster" but we are not getting that... we are getting nothing, its like the host thinks it can still see the other host...
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
have you tried removing the faulty node from the cluster, and adding it back.
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liminalAuthor Commented:
No, but i have tried the "reconfigure HA on host" or whatever it says, a few times.

Ill give it a go though, why not :)
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bgoeringCommented:
If that doesn't work try turning HA off on the cluster then back on again.

Have you gone through that checklist in kb article I posted?
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liminalAuthor Commented:
Ok we have removed the host - restarted it - re-added it. and the host A still wont pick up the other VM, if you kill host B

So your saying disable and reconfigure HA?

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liminalAuthor Commented:
Please also note... we are getting NO errors @ all yeah. Host A, just will not pick up the VMs if you disable host B.
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bgoeringCommented:
Yes, disable it on the cluster, wait a few minutes then re-enable it.
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liminalAuthor Commented:
Ok thanks everyone... we got to the bottom of it, it seems you can only configure ONE gateway for the whole system, so when we setup a new VMkernal for the storage network it took that gateway for the management network as well… dif from ESX

Anyway thanks everyone for all your help.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
So the gateways were wrong.!

Glad it's all fixed.
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liminalAuthor Commented:
HAHA Well not wrong... when we created the storage network we gave it a gateway .14.1but our production network is .10.1 and thats what it needed

It seems to only have the ability to define one gateway, even if you have multipliable networks. and im wondering if this is not going to be problems for the storage network @ some point.

all fail-overs seem to be working fine... but i still dont understand why you only have one gateway
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
well only if you need to route to a storage network, e.g. its not on local subnet.
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bgoeringCommented:
You can only have one default gateway, but you can use the esxcfg-route command from tech support mode (or esxcfg-route.pl rCLI command) to list, add, delete routes you may need for storage.

Take a look at esxcfg-route -l
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liminalAuthor Commented:
Ok thanks bgoering, everything seems fine right now...
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