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Adding a shutdown script that would enable handling preemptible VM terminations gracefully in GCP environment
Signed-off-by: Vishnu kannan <vishnuk@google.com>
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@ -28,6 +28,7 @@ release_filegroup(
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"configure.sh",
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"master.yaml",
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"node.yaml",
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"shutdown.sh",
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],
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visibility = ["//visibility:public"],
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)
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@ -28,6 +28,7 @@ function get-node-instance-metadata {
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metadata+="gci-update-strategy=${KUBE_TEMP}/gci-update.txt,"
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metadata+="gci-ensure-gke-docker=${KUBE_TEMP}/gci-ensure-gke-docker.txt,"
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metadata+="gci-docker-version=${KUBE_TEMP}/gci-docker-version.txt,"
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metadata+="shutdown-script=${KUBE_ROOT}/cluster/gce/gci/shutdown.sh,"
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metadata+="${NODE_EXTRA_METADATA}"
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echo "${metadata}"
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}
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23
cluster/gce/gci/shutdown.sh
Executable file
23
cluster/gce/gci/shutdown.sh
Executable file
@ -0,0 +1,23 @@
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#!/usr/bin/env bash
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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# A script that let's gci preemptible nodes gracefully terminate in the event of a VM shutdown.
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preemptible=$(curl "http://metadata.google.internal/computeMetadata/v1/instance/scheduling/preemptible" -H "Metadata-Flavor: Google")
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if [ ${preemptible} == "TRUE" ]; then
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echo "Shutting down! Sleeping for a minute to let the node gracefully terminate"
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# https://cloud.google.com/compute/docs/instances/stopping-or-deleting-an-instance#delete_timeout
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sleep 30
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fi
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