crowbar/crowbar-core

#!/bin/bash
#
# Copyright 2011-2013, Dell
# Copyright 2013-2014, SUSE LINUX Products GmbH
#
# 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.
#

lockfile="/var/run/crowbar/chef-client.lock"
while ! ( set -o noclobber; echo "$$" > "$lockfile") 2> /dev/null; do
    pid=$(cat "$lockfile")
    echo "Failed to acquire lockfile: $lockfile."
    echo "Held by $(readlink "/proc/$pid/exe") ($pid)"
    echo "Process tree for $pid:" 
    pstree -Aupcl "$pid"
    echo
    sleep 1
done
trap 'rm -f "$lockfile"; exit $?' INT TERM EXIT
echo "$$" >"$lockfile"
ret=0
for loglvl in info; do
    while { chef-client -l "$loglvl"; ret=$?; ((ret >= 128)); }; do
    echo "Chef-client exited with error code $ret, retrying"
    sleep 1
    done
    (( ret == 0 )) && break
    case $loglvl in
    info) echo "Chef client run failed, will retry with debugging.";;
    debug) echo "Chef client run failed with debug enabled.";;
    esac
done
rm -f "$lockfile"
trap - INT TERM EXIT
exit $ret