Merge pull request #55015 from fasaxc/calico-disable-grace

Automatic merge from submit-queue (batch tested with PRs 53645, 54734, 54586, 55015, 54688). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Disable the grace termination period for the calico/node pod **What this PR does / why we need it**: Disable the termination grace period for the calico/node add-on DaemonSet. The grace period is unnecessary for calico/node and it delays restart of a new calico/node pod to take over routing and policy updates. Setting the grace period to 0 has the special meaning of doing a force deletion, which avoids a slow round-trip through the kubelet and API server. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes #55013 **Special notes for your reviewer**: **Release note**: ```release-note Disable the termination grace period for the calico/node add-on DaemonSet to reduce downtime during a rolling upgrade or deletion. ```

Merge pull request #55015 from fasaxc/calico-disable-grace
f35c4a2b · Kubernetes Submit Queue · GitHub · 67c9e741 · 0cddb6b0 · f35c4a2b
Unverified Commit f35c4a2b authored Nov 06, 2017 by Kubernetes Submit Queue Committed by GitHub Nov 06, 2017
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calico-node-daemonset.yaml ...ddons/calico-policy-controller/calico-node-daemonset.yaml +3 -0

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--- a/cluster/addons/calico-policy-controller/calico-node-daemonset.yaml
+++ b/cluster/addons/calico-policy-controller/calico-node-daemonset.yaml
@@ -24,6 +24,9 @@ spec:
        projectcalico.org/ds-ready: "true"
      hostNetwork: true
      serviceAccountName: calico
+      # Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
+      # deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
+      terminationGracePeriodSeconds: 0
      containers:
        # Runs calico/node container on each Kubernetes node.  This
        # container programs network policy and routes on each