HA Error - could not reach isolation address

[jjonesjr]

When I enable HA in my cluster, I get this error: "Issue detected on vm1.lan.wamtelco.com in WTC-HQ: Could not reach isolation address: none specified"

We have 5 hosts - all are 3.0.2 update 1. VC is also up-to-date.

I googled and searched the forums for this and can't find anything. Any ideas?

Thanks,

Jim

[virtualdud3]

Did you happen to enter a "das.isolationaddress" within the advanced options, and not specify an IP address?

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[jjonesjr]

Nope, there are no options specified.

[virtualdud3]

Yeah, I figured that would be too easy.

Can each of the ESX servers ping their default gateway?

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[jjonesjr]

yep, all can reach the gw...

[admin · Accepted solution]

Does the Service Console default gateway on that host (vm1.lan.wamtelco.com) show up correctly in the VI client. Check in the Networking section of the Configuration tab for the host.

[jjonesjr]

Booya! That was it. I must have passed right over that when I set the darn thing up. Once I put the default gw in for the service console on that host and re-enabled HA, the error went away.

Thanks!

Jim

[djc49939]

My gateway matches, but cannot ping gw due to firewall restrictions or an ACL. can I tell it to ignore this?

[admin]

If your gateway is not pingable you can't use its IP address for isolation detection. You'll have to specify some other IP for this purpose using the HA advanced option (das.isolationaddress).

[mforbes]

Excellent advice, thanks for sharing....not sure how the default gateway got removed though.

[Jeff1981]

Just upgraded to VC 2.5, and for my DMZ cluster, either the das.isolationaddress entry disappeared or the gateway of the Service console. Deeming the latter highly unlikely, I entered the correct das.isolationaddress, after which I was able to enable HA on all my hosts. Thanks for the advice!

[REALM]

Anyone have a screenshot of where you enter an isolation address?

My default gateway is 192.168.10.1 but its not pingable. I'm just on a private network with absolutely nothing connected other than the following IP's:

192.168.10.16 (VC), 192.168.10.17 (ESX), 192.168.10.18 (ESX), 192.168.10.19 (ESX)

What am I doing wrong? Have same issue. Not a network guru. =/

[satish_lx]

In VC inventory section right click on cluster >> edit settings >> VMware HA >> in botton side there is one button Advanced Option >> select empty box and manually type das.isolationaddress and put IP address.

Thanks

Satish Patel

[andreleibovici]

That worked for me!

Thanks :smileysilly: