Magnum

Nodes don't unregister correctly during Kub cluster flex down

Bug #1511570 reported by Egor Guz
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Magnum
In Progress
Undecided
hongbin
Magnum mitaka-1

Bug Description

magnum bay-create --name k8sbay --baymodel k8sbaymodel --node-count 2
kubectl get nodes
NAME LABELS STATUS
k8-rx3u4snr7c-0-ugpltcslxk7s-kube-minion-7zikbqn2xfmi kubernetes.io/hostname=k8-rx3u4snr7c-0-ugpltcslxk7s-kube-minion-7zikbqn2xfmi Ready
k8-rx3u4snr7c-1-3z7cqglokv7k-kube-minion-jdu36taopc26 kubernetes.io/hostname=k8-rx3u4snr7c-1-3z7cqglokv7k-kube-minion-jdu36taopc26 Ready

magnum bay-update k8sbay replace node_count=1
kubectl get nodes
NAME LABELS STATUS
k8-rx3u4snr7c-0-ugpltcslxk7s-kube-minion-7zikbqn2xfmi kubernetes.io/hostname=k8-rx3u4snr7c-0-ugpltcslxk7s-kube-minion-7zikbqn2xfmi NotReady
k8-rx3u4snr7c-1-3z7cqglokv7k-kube-minion-jdu36taopc26 kubernetes.io/hostname=k8-rx3u4snr7c-1-3z7cqglokv7k-kube-minion-jdu36taopc26 Ready

Revision history for this message
Ton Ngo (ton-i) wrote :

There is an "unregister" step that is supposed to occur when the node is removed so that k8s will no longer show that node. Apparently this is not happening correctly. I will take a look.

Changed in magnum:
assignee: nobody → Ton Ngo (ton-i)
Hua Wang (humble00)
Changed in magnum:
assignee: Ton Ngo (ton-i) → Hua Wang (humble00)
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to magnum (master)

Fix proposed to branch: master
Review: https://review.openstack.org/241183

Changed in magnum:
status: New → In Progress
Revision history for this message
OpenStack Infra (hudson-openstack) wrote :

Fix proposed to branch: master
Review: https://review.openstack.org/244400

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Change abandoned on magnum (master)

Change abandoned by Hua Wang (<email address hidden>) on branch: master
Review: https://review.openstack.org/244400

OpenStack Infra (hudson-openstack)
Changed in magnum:
assignee: Hua Wang (humble00) → hongbin (hongbin034)
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to magnum (master)

Reviewed: https://review.openstack.org/241183
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=c075bc7ce03ab8faef2bb4731abb995a2847313c
Submitter: Jenkins
Branch: master

commit c075bc7ce03ab8faef2bb4731abb995a2847313c
Author: Hua Wang <email address hidden>
Date: Thu Nov 12 10:16:38 2015 +0800

    Delete kube-register

    1. kubelet can automatically register nodes, so we don't need to
    register nodes.
    2. When we remove a node from the cluster, the nova instance is
    terminated. So the instance has no stop process to run unregister
    script. Heat has a spec [1] to add stop deletion policy now. After
    this function is merged, I will add unregister script back.

    [1] https://review.openstack.org/#/c/243012/

    Change-Id: I9b1ea0eda74f9bfba8b87c67c2bd063c62460336
    Partial-Bug: #1511570

Adrian Otto (aotto)
Changed in magnum:
milestone: none → mitaka-1
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