Disable exit on error for pacemaker commands for update flow

Package update fails on compute node, when yum_update checks for
pacemaker status via systemctl command. Because exit on error (-e)
option has been enabled recently, this issue is happening. Fixing
by, executing the command only on nodes where pacemaker is enabled.
Closes-Bug: #1668266

Change-Id: I2aae4e2fdfec526c835f8967b54e1db3757bca17
(cherry picked from commit e9a2fdc0afd2a3f1242f397c5f164cf6b43c2669)

diff --git a/extraconfig/tasks/yum_update.sh b/extraconfig/tasks/yum_update.sh
index c66dd01..6bf415b 100755 (executable)
--- a/extraconfig/tasks/yum_update.sh
+++ b/extraconfig/tasks/yum_update.sh
@@ -47,7 +47,10 @@ if [[ "$list_updates" == "" ]]; then
     exit 0
 fi
 
-pacemaker_status=$(systemctl is-active pacemaker || :)
+pacemaker_status=""
+if hiera -c /etc/puppet/hiera.yaml service_names | grep -q pacemaker; then
+    pacemaker_status=$(systemctl is-active pacemaker)
+fi
 
 # Fix the redis/rabbit resource start/stop timeouts. See https://bugs.launchpad.net/tripleo/+bug/1633455
 # and https://bugs.launchpad.net/tripleo/+bug/1634851