133 lines
4 KiB
Bash
Executable file
133 lines
4 KiB
Bash
Executable file
#!/bin/bash
|
|
|
|
# Copyright 2015 The Kubernetes Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
# Script to update etcd objects as per the latest API Version.
|
|
# This just reads all objects and then writes them back as is to ensure that
|
|
# they are written using the latest API version.
|
|
#
|
|
# Steps to use this script to upgrade the cluster to a new version:
|
|
# https://github.com/kubernetes/kubernetes/blob/master/docs/cluster_management.md#updgrading-to-a-different-api-version
|
|
|
|
set -o errexit
|
|
set -o nounset
|
|
set -o pipefail
|
|
|
|
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
|
|
source "${KUBE_ROOT}/hack/lib/init.sh"
|
|
|
|
KUBECTL="${KUBE_OUTPUT_HOSTBIN}/kubectl"
|
|
|
|
# List of resources to be updated.
|
|
# TODO: Get this list of resources from server once
|
|
# http://issue.k8s.io/2057 is fixed.
|
|
declare -a resources=(
|
|
"endpoints"
|
|
"events"
|
|
"limitranges"
|
|
"namespaces"
|
|
"nodes"
|
|
"pods"
|
|
"persistentvolumes"
|
|
"persistentvolumeclaims"
|
|
"replicationcontrollers"
|
|
"resourcequotas"
|
|
"secrets"
|
|
"services"
|
|
"jobs"
|
|
"horizontalpodautoscalers"
|
|
)
|
|
|
|
# Find all the namespaces.
|
|
namespaces=( $("${KUBECTL}" get namespaces -o go-template="{{range.items}}{{.metadata.name}} {{end}}"))
|
|
if [ -z "${namespaces:-}" ]
|
|
then
|
|
echo "Unexpected: No namespace found. Nothing to do."
|
|
exit 1
|
|
fi
|
|
|
|
all_failed=1
|
|
|
|
for resource in "${resources[@]}"
|
|
do
|
|
for namespace in "${namespaces[@]}"
|
|
do
|
|
# If get fails, assume it's because the resource hasn't been installed in the apiserver.
|
|
# TODO hopefully we can remove this once we use dynamic discovery of gettable/updateable
|
|
# resources.
|
|
set +e
|
|
instances=( $("${KUBECTL}" get "${resource}" --namespace="${namespace}" -o go-template="{{range.items}}{{.metadata.name}} {{end}}"))
|
|
result=$?
|
|
set -e
|
|
|
|
if [[ "${all_failed}" -eq 1 && "${result}" -eq 0 ]]; then
|
|
all_failed=0
|
|
fi
|
|
|
|
# Nothing to do if there is no instance of that resource.
|
|
if [[ -z "${instances:-}" ]]
|
|
then
|
|
continue
|
|
fi
|
|
for instance in "${instances[@]}"
|
|
do
|
|
# Read and then write it back as is.
|
|
# Update can fail if the object was updated after we fetched the
|
|
# object, but before we could update it. We, hence, try the update
|
|
# operation multiple times. But 5 continuous failures indicate some other
|
|
# problem.
|
|
success=0
|
|
for (( tries=0; tries<5; ++tries ))
|
|
do
|
|
filename="/tmp/k8s-${namespace}-${resource}-${instance}.json"
|
|
( "${KUBECTL}" get "${resource}" "${instance}" --namespace="${namespace}" -o json > "${filename}" ) || true
|
|
if [[ ! -s "${filename}" ]]
|
|
then
|
|
# This happens when the instance has been deleted. We can hence ignore
|
|
# this instance.
|
|
echo "Looks like ${instance} got deleted. Ignoring it"
|
|
continue
|
|
fi
|
|
output=$("${KUBECTL}" replace -f "${filename}" --namespace="${namespace}") || true
|
|
rm "${filename}"
|
|
if [ -n "${output:-}" ]
|
|
then
|
|
success=1
|
|
break
|
|
fi
|
|
done
|
|
if [[ "${success}" -eq 0 ]]
|
|
then
|
|
echo "Error: failed to update ${resource}/${instance} in ${namespace} namespace after 5 tries"
|
|
exit 1
|
|
fi
|
|
done
|
|
if [[ "${resource}" == "namespaces" ]] || [[ "${resource}" == "nodes" ]]
|
|
then
|
|
# These resources are namespace agnostic. No need to update them for every
|
|
# namespace.
|
|
break
|
|
fi
|
|
done
|
|
done
|
|
|
|
if [[ "${all_failed}" -eq 1 ]]; then
|
|
echo "kubectl get failed for all resources"
|
|
exit 1
|
|
fi
|
|
|
|
echo "All objects updated successfully!!"
|
|
|
|
exit 0
|