• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 414
  • Last Modified:

vmware complete power off

Hi Experts,
today I had a bad experience with my vsphere environment.
For a test we powered off all our physical switches.
I thought, ok, the vm's are loosing the network connectivity.

But the result was, the whole cluster restarted.
All vm's were powered off.

Can you explain why ?
0
Eprs_Admin
Asked:
Eprs_Admin
2 Solutions
 
networkadminkjmcCommented:
Are you hosting from a Datacore server? If so loosing network connectivity will bring down the ESX environment along with all VM's connected to the various resource pools
0
 
Eprs_AdminSystem ArchitectAuthor Commented:
What is a datacore server ?

Is it normal if ESXi loose all network connection, that all hosts and vm's are restarting ?
0
 
krzywisCommented:
How many hosts have you got?
Have you got redundant switches? Has service console or management (if ESXi) network redundant connection?
Is HA enabled on the cluster? If so what is the isolation response set to?
Without more details it is difficult to say for 100% but this is probably what happened ... Check out this blog post http://www.yellow-bricks.com/vmware-high-availability-deepdiv/ ad search for "false positive"

Kris
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
Danny McDanielClinical Systems AnalystCommented:
In other words, if HA is enabled and the isolation response is set to Shut Down or Power Off (one of them is the default in most vCenter releases), then all hosts would have thought that they became isolated and then implement the set response mode.

Were you attempting to test HA by pulling all of the network or just wanted to see what would happen?
0
 
Eprs_AdminSystem ArchitectAuthor Commented:
Hi, I have ESXi 4.1.
HA is enabled and the isolation setting is set medium and shutdown the vm's.
Redundancy is set up.

But when I disconnect all physical nics from the host, this means isolated ?
And then this feature kicks in ?
0
 
krzywisCommented:
Almost correct - heartbeat is sent over management network, so it is enough for all of NICs that are used for management connectivity to loose network connectivity to trigger HA response (look for vSwitches with "VMkernel port" port group; note that VMkernel is used for VMotion too, but it might be separete network)
0
 
Eprs_AdminSystem ArchitectAuthor Commented:
ok, then I have to check the isolation process.
And now our switches are redundant and on different UPS.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now