kops/kube-addons.sh

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#!/bin/bash
# Copyright 2014 Google Inc. All rights reserved.
#
# 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.
# The business logic for whether a given object should be created
# was already enforced by salt, and /etc/kubernetes/addons is the
# managed result is of that. Start everything below that directory.
KUBECTL=/usr/local/bin/kubectl
# $1 addon to start.
# $2 count of tries to start the addon.
# $3 delay in seconds between two consecutive tries
function start_addon() {
addon=$1;
tries=$2;
delay=$3;
while [ ${tries} -gt 0 ]; do
${KUBECTL} create -f ${addon} && \
echo "== Successfully started ${addon} at $(date -Is)" && \
return 0;
let tries=tries-1;
echo "== Failed to start ${addon} at $(date -Is). ${tries} tries remaining. =="
sleep ${delay};
done
return 1;
}
# The business logic for whether a given object should be created
# was already enforced by salt, and /etc/kubernetes/addons is the
# managed result is of that. Start everything below that directory.
echo "== Kubernetes addon manager started at $(date -Is) =="
for obj in $(find /etc/kubernetes/addons -name \*.yaml); do
start_addon ${obj} 100 10 &
echo "++ addon ${obj} starting in pid $! ++"
done
noerrors="true"
for pid in $(jobs -p); do
wait ${pid} || noerrors="false"
echo "++ pid ${pid} complete ++"
done
if [ ${noerrors} == "true" ]; then
echo "== Kubernetes addon manager completed successfully at $(date -Is) =="
else
echo "== Kubernetes addon manager completed with errors at $(date -Is) =="
fi
# We stay around so that status checks by salt make it look like
# the service is good. (We could do this is other ways, but this
# is simple.)
sleep infinity