| #!/bin/bash |
| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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 which, when run from Jenkins, will hunt and kill any other jenkins |
| # processes running on the same machine from a different build. |
| # |
| # This is done by looking for all of the processes owned by the jenkins user, |
| # checking their BUILD_ID environment variable, and killing any whose BUILD_ID |
| # does not match the current $BUILD_ID environment. This assumes that there are |
| # no concurrent builds configured in Jenkins, for obvious reasons. |
| # |
| # Set $DRY_RUN before running this script to just see what would be killed. |
| |
| set -e |
| |
| JENKINS_USER=${JENKINS_USER:-jenkins} |
| CURRENT_BUILD=$BUILD_ID |
| |
| if [ "$USER" != "$JENKINS_USER" ]; then |
| echo Not running as user \'$JENKINS_USER\' |
| exit 1 |
| fi |
| |
| if [ -z "$CURRENT_BUILD" ]; then |
| echo Not running in the context of a Jenkins build |
| exit 1 |
| fi |
| |
| JENKINS_PIDS=$(pgrep -u $JENKINS_USER) |
| for pid in $JENKINS_PIDS; do |
| cmdline=$(ps h -p $pid -o cmd || echo '[pid exited]') |
| build_env=$(cat /proc/$pid/environ 2>/dev/null | tr '\0' '\n' | egrep '^BUILD_ID=' || :) |
| if [ -z "$build_env" ]; then |
| # Some Jenkins processes, like the slave itself, don't have a BUILD_ID |
| # set. We shouldn't kill those. |
| echo "Process $pid ($cmdline) not associated with any build. Skipping..." |
| continue |
| fi |
| build_id=$(echo $build_env | cut -d= -f2) |
| if [ "$build_id" != "$CURRENT_BUILD" ]; then |
| echo "Killing zombie process $pid (from build $build_id)" |
| ps -fww -p $pid || : |
| if [ -z "$DRY_RUN" ]; then |
| kill -9 $pid || : |
| fi |
| echo ---------- |
| else |
| echo "pid $pid ($cmdline) is from the current build. Not killing" |
| fi |
| done |