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openstackgerrit | venkatamahesh proposed openstack/ha-guide: Fix exact link for home-page https://review.openstack.org/276689 | 11:21 |
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openstackgerrit | Bogdan Dobrelya proposed openstack/ha-guide: Add libqb0 package to the corosync setup guide https://review.openstack.org/276728 | 13:31 |
openstackgerrit | Bogdan Dobrelya proposed openstack/ha-guide: [ha-guide] Update rabbitmqctl join_cluster https://review.openstack.org/276735 | 13:44 |
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openstackgerrit | Bogdan Dobrelya proposed openstack/ha-guide: Add a link to RHEL docs for pacemaker cluster setup https://review.openstack.org/276743 | 14:02 |
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bogdando | ddeja, that's great! | 14:08 |
ddeja | bogdando: thanks :) | 14:10 |
bogdando | ddeja, is https://bugs.launchpad.net/mistral/+bug/1535295 a blocker on the way from PoC to the recommended solution? | 14:11 |
openstack | Launchpad bug 1535295 in Mistral "Task with join runs more than once" [Undecided,New] | 14:11 |
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bogdando | ddeja, I'm just wondering why it blocks things. AFAIK, the STONITH invariants assume tasks idempotency, like fence(off)=off, therefore shall not break things if repeated... | 14:13 |
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ddeja | bogdando: Theoritically it is not blocking - when you look at workflow https://github.com/gryf/mistral-evacuate/blob/separate-workflow/host-evacuate.yaml this bug will result in running 'filter_vms' and 'evacuate_vms' two times | 14:25 |
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ddeja | first one is totaly idempotent, so it's no problem | 14:25 |
ddeja | second is also idempotent (nova can handle two evacuate request for same instance) | 14:25 |
ddeja | however | 14:26 |
ddeja | second run of 'evacaute_vms' for same vms would result in throwing an exception | 14:26 |
ddeja | which will result in putting workflow in error state | 14:26 |
ddeja | so, for example, if we want to send e-mail on success for evacuate_vms, we would not be able to do so | 14:27 |
bogdando | Which component throws? | 14:28 |
ddeja | nova client | 14:28 |
ddeja | action nova.serwers_evacuate is just a wrapper for nova-client | 14:28 |
bogdando | so nova services can handle two evacuate request, but client throws, correct? | 14:28 |
ddeja | yes, if you try to evacuate VMs that is beeing evacuated at the moment, you will got an exception | 14:29 |
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openstackgerrit | Merged openstack/ha-guide: Add libqb0 package to the corosync setup guide https://review.openstack.org/276728 | 21:37 |
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