JenkinsCIをyum updateすると、これのせいでworkdir以下のchownが時間掛かり過ぎる　JENKINS_INSTALL_SKIP_CHOWNの変数で制御できるのかな今度試す

a.sh

/sbin/chkconfig --add jenkins

# If we have an old hudson install, rename it to jenkins
if test -d /var/lib/hudson; then
    # leave a marker to indicate this came from Hudson.
    # could be useful down the road
    # This also ensures that the .??* wildcard matches something
    touch /var/lib/hudson/.moving-hudson
    mv -f /var/lib/hudson/* /var/lib/hudson/.??* /var/lib/jenkins
    rmdir /var/lib/hudson
    find /var/lib/jenkins -user hudson -exec chown jenkins {} + || true
fi
if test -d /var/run/hudson; then
    mv -f /var/run/hudson/* /var/run/jenkins
    rmdir /var/run/hudson
fi

# Ensure the right ownership on files
. /etc/sysconfig/jenkins
if test x"$JENKINS_INSTALL_SKIP_CHOWN" != "xtrue"; then
   chown -R ${JENKINS_USER:-jenkins} /var/cache/jenkins
   chown -R ${JENKINS_USER:-jenkins} /var/log/jenkins
   chown -R ${JENKINS_USER:-jenkins} ${JENKINS_HOME:-/var/lib/jenkins}
fi