VMware Communities: Insufficient resources to satisfy HA

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19 Replies Last post: May 19, 2008 5:49 PM by bemisVmwareLicensing

Insufficient resources to satisfy HA

Feb 16, 2008 7:39 AM

garybrown 115 posts since
Feb 11, 2005

Have just upgraded VC to 2.5 and now 4 of my 13 Farms have this error. Haven't upgraded the ESX hosts yet - these are still running 3.0.2. Other than the VC upgrade nothing has changed. Anyone have any pointers as to why the upgrade has now thrown up this problem when it has been an issue before ?

tia

Gary

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 4:07 AM

TCP 149 posts since
Aug 22, 2007

Hi.

Try to REеnable HA.

First uncheck Enable VMware HA -> OK

Than check Enable VMware HA -> OK

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 4:23 AM

in response to: TCP

garybrown 115 posts since
Feb 11, 2005

Thanks for the suggestion but I have already tried that to no avail !

I can lose the warning simply by checking the Allow VMs to be powered on even if they violate availability constraints but I don't understand why it's now an issue with VC 2.5 when with 2.0.2 there was no problem.

thanks

Gary

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 4:59 AM

in response to: garybrown

TCP 149 posts since
Aug 22, 2007

VMware HA enforces failover capacity by using memory & CPU reservations

to estimate the number of VMs able to recover from multiple host failures (VMware HA: Overview & Technical Best Practices)

How many hosts in your cluster and how many host failures allowed?

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 5:03 AM

in response to: TCP

garybrown 115 posts since
Feb 11, 2005

four host Farms with one failure allowed

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 6:22 AM

in response to: garybrown

TCP 149 posts since
Aug 22, 2007

Is it possible that resource capacity of your three hosts really cann't satisfy sufficient number of resources all running VM's, if one host fail?

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 7:08 AM

in response to: TCP

garybrown 115 posts since
Feb 11, 2005

I guess it is possible and VC 2.0.2 overlooked certain conditions maybe. I've been doing some comparisons between some Farms I still have running on 2.0.2 and then some Farms running ESX 3.5.0 on VC 2.5.0 and see some differences on Resource Allocation so I think I'm going to get these particular Farms upgraded to 3.5 and see what, if anything, that changes.....

Reply Re: Insufficient resources to satisfy HA Feb 18, 2008 7:37 AM

in response to: garybrown

TCP 149 posts since
Aug 22, 2007

Ok.

Check it out.

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 6:55 AM

in response to: TCP

SGUSISG 3 posts since
Jan 20, 2006

I upgraded VC from 2.0.1 to 2.5.0 with 3.0.1 ESX hosts. Both of my HA clusters are giving the same symptoms as above: Insufficient resources to satisfy HA. I did not have any warnings while on 2.0.1. Support simply says I don't have enough resources. Any updates on this?

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 7:31 AM

in response to: SGUSISG

TCP 149 posts since
Aug 22, 2007

Please describe your HA configuration.

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 7:40 AM

in response to: TCP

SGUSISG 3 posts since
Jan 20, 2006

We have 2 HA clusters:

1. 2 Dell PE2850's with 12gb and 8gb of RAM with 17 VM's.

2. 4 Dell PE6850's with 32gb of RAM each with 70+ VM's.

Before the upgrade, our 6850 cluster showed failover capacity for 2 hosts. Now it shows 0. I'm interested to know if this will "correct" itself after upgrading the hosts to 3.5.

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 8:01 AM

in response to: SGUSISG

TCP 149 posts since
Aug 22, 2007

I have configuration cluster 2 esx 3.02 hosts and vc 2.5 and no problem.

Capacity of 0 hosts mean your cluster is not worked properly.

Try to REеnable HA.

First uncheck Enable VMware HA -> OK

Than check Enable VMware HA -> OK

also

try to restart vmware management service from host console.

service mgmt-vmware restart

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 8:10 AM

in response to: TCP

SGUSISG 3 posts since
Jan 20, 2006

I've already tried both solutions on both clusters with no success.

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 8:29 AM

in response to: SGUSISG

TCP 149 posts since
Aug 22, 2007

Try to reconnect hosts to vc.

Reply Re: Insufficient resources to satisfy HA Feb 20, 2008 12:16 PM

in response to: SGUSISG

eziskind 309 posts since
Feb 21, 2006 VMware

The "problem" is that HA admission control got more conservative in VC 2.5 (see my comments in this thread http://communities.vmware.com/message/822784). If you have vms with different number of cpus in the same cluster (eg. some with 1 cpu and some with 2 cpus) then that will make the admission control overly conservative to ensure that there is enough unfragmented resources for all vms in the cluster in the case of a failover.

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