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VM powered off itself after alarm hit gray or red

Posted on 2009-02-23
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Last Modified: 2012-05-06
I have a esxi server, that time to time at 6:30am (roughly) on a random day, it will receive alot of alarm virtual machine CPU Usage or alarm host connection change from green to gray/red and the next things happen, i can see all my VM start to powered off itself.

luckily i got set some server to boot up as the server reboot.


i am not very sure whether it is because of the CPU/memory resevation causing it, but it just happen randomly on the same time.

it is pain and i want to stop it from happening.

Can anyone share some lights here?


vmware-error.JPG
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Question by:Jian An Lim
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za_mkh earned 1500 total points
ID: 23718815
Does your ESX server itself power off?
If not, could it be that you have configured your alerting for your ESXi server such that if certain thresholds are breached in a VM, it powers the VM Off?
Check your Alerting configuration to see if that is the cause?
If you don't know what this is, the link below will give you a quick pointer:
http://www.petri.co.il/configure-vmware-esx-alarms.htm
 
 
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by:Jian An Lim
ID: 23719270
i check alert from datastore to vm, there is nothing about alerting configuration.
but it might be rebootting itself.

as the VM that i set to start auto start has start itself.


how can i check whether it have rebooted itself?
but if it reboot itself (unplanned) , i should not receive the vm power down one by one right?

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Assisted Solution

by:za_mkh
za_mkh earned 1500 total points
ID: 23726159
It is strange because from the logs that you posted, it doesn't seem that the ESX server has rebooted itself. You can use the uptime command from within a Console or Putty session to see how long the ESX Host has been running. For ESXi maybe the uptime command will work if you use the RCLI client to connect to the ESXi server.
I've studied your attached log picture again. It seems that you have about 12-18 VM's on your ESXi host. What is the spec of your Host. Does it have enough physical RAM to host all thoseVM Guest machines. What type of processor / storage do they have? That could also be a clue..
 
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LVL 37

Author Comment

by:Jian An Lim
ID: 23727296
okay
i go into the unsupported ESXi console and type in uptime.

It seems the server has only uptime for 1 day and 2 hours (roughly the last time since the box gone rebooted)


I will post the spec of the server in the next post after i collect more data.

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LVL 37

Author Comment

by:Jian An Lim
ID: 23727661
hi, i upload the summary of the server

it has 22GB of ram,
CPU usage is * X 2.659

it is a local disk, using SATA disk (i think 4 (or 6) SATA in RAID 5)

4 network card.


this ESXi has only 2 important server (which is the file server and crm software) others is just redudancy of what current we have.

addition to this, it is also my test lab.
So i got at least 4 server is constantly on for testing...

I have a resource pool.. and put spilt them up into a few of them.


 am i done alright?
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LVL 37

Author Comment

by:Jian An Lim
ID: 23727675
here the upload, please review kindly
vmware-resource.JPG
vmware-summary.JPG
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LVL 21

Assisted Solution

by:za_mkh
za_mkh earned 1500 total points
ID: 23732591
It could be your resource pool configuration causing the problem.
You have three of them and what you have done is limited the amount of CPU each Resource Pool can use. You probably did the same thing for memory. But what you have set for the CPU resource pools type to be EXPANDABLE. Which means that each resource pool can use more then the limit that you assigned to it if it needs it. If this does happen, it could affect other guest machines.
If your server is only hosting two critical machines and the others are just for redunancy, why don't you power of some of the unessential servers so that that you can see if that maybe resolves your problem. If it does, then you can investigate your resource pool configuration again?
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LVL 37

Author Comment

by:Jian An Lim
ID: 23739689
i just found we have been over committing the rams ... we have 20G and we commited at least 17GB on the online systems and when the testlab runs, it also commit another 5GB.

I think this might be the reason it fall apart?
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LVL 37

Author Closing Comment

by:Jian An Lim
ID: 31550386
i still cant explain why but the good thing is the server do not reboot itself. so i think i should close t he case soon.
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