HA Agent issue

[AshM]

Hi,

I am running several datacenters in VirtualCenter 2.5 one of which contains 4 x R900 servers each running ESX 3.5 Update 1. Every so often the HA Agent on these servers seem to error

with a very unspecific error message "HA Agent on ******** in cluster ******* in ***Datacenter has an error. We have active directory setup and have manually registered each ESX server. I have checked that I can ping the FQDN of all servers and I can. Any ideas, I 'm a bit scared as we are soon moving into production with these servers!!! HELP!!!

Also could someone clarify what exactly the difference is between the Virtual Center Agent and the HA Agent is?

Cheers Ash

[depping]

1) can the esx servers ping all other servers on fqdn and short name?

2) are all names fully lowercase?

3) host files being used?

Duncan

Blogging:

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[weinstein5]

Welcome to the Forums - One other thing to make sure is that you hosts are added to virtual center by FQDN and not IP address -

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[malaysiavm]

My experience on this, try to double check all the host file locally on your ESX server are configure with FQDN in lower case and apply the same to all ESX server. If you have some with upper case and lower case mix, you will experience the problem as you stated here.

Malaysia VMware Communities -

[SurfControl]

we had this problem as well, I went through all the suggestions i can find...DNS, NTP, enable and disable HA...etc...and none of them fixed our problem. we upgraded to ESX 3.5 U2 and VC 2.5 U3 couple weeks ago and I haven't not seen this HA agent error ever since...

[AshM]

Thanks for the welcome.

All of our ESX servers have been added by FQDN. We are also experiencing issues where during peak usage our ESX servers seem to randomly disconnect from VC and the only way I can reconnect them is to delete the VC agent (which when I try to delete it ESX says it is not installed??) and then reconnect the ESX Server...Weird Looks like the answer may be to upgrade as stated in another post?

[Texiwill]

Hello,

If you are using ESX U2 then you need VC U3, however refer to http://www.itworld.com/virtualization/57251/vmware-ha-failed-error for a possible solution to the problem.

Best regards,

Edward L. Haletky

VMware Communities User Moderator

====

Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.

SearchVMware Blog: http://itknowledgeexchange.techtarget.com/virtualization-pro/

Blue Gears Blogs - http://www.itworld.com/ and http://www.networkworld.com/community/haletky

As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization