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How to recover from failed stack updates

asked 2013-12-20 07:42:48 -0500

nilanjan-r gravatar image

Hi,

I am trying to update an existing heat stack. In the original stack I have created few vms. Now I want to add more vms to the same stack. I am providing the compute node name where the vm should be launched. At first I put the compute node name wrong and the stack update failed. The newly added VM state is in error in nova list. I again trie to update it with the correct parameters. But it failed. Then I had to delete the stack and create the original one. Then I updated it with the correct template. Then it updated successfully.

Then I simulated the stack failure again and every time once the stack update is failed subsequent updates are also failing. Is it a bug or there is some other way to recover from a stack update? Or else I am missing something? Please help.

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answered 2013-12-20 12:18:49 -0500

shardy gravatar image

Hi,

This is a known problem, which we're working on fixing. See https://bugs.launchpad.net/heat/+bug/... which I've linked.

Also related, see summit etherpad:

https://etherpad.openstack.org/p/iceh...

And related blueprints:

https://blueprints.launchpad.net/heat... https://blueprints.launchpad.net/heat...

There is a patch posted for retry-failed-update, which when merged, I think may solve your problem: https://review.openstack.org/#/c/62936/

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Asked: 2013-12-20 07:42:48 -0500

Seen: 892 times

Last updated: Dec 20 '13