From 74b3cff4fce5483d126b16131db53f8bd5804c82 Mon Sep 17 00:00:00 2001
From: Peter Lemenkov <lemenkov@redhat.com>
Date: Tue, 21 Jun 2016 15:48:07 +0200
Subject: [PATCH] Don't run scriptlets if Mnesia isn't available

See this rhbz for further details and symptoms:

https://bugzilla.redhat.com/1343905

Signed-off-by: Peter Lemenkov <lemenkov@redhat.com>
---
 heartbeat/rabbitmq-cluster | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/heartbeat/rabbitmq-cluster b/heartbeat/rabbitmq-cluster
index facca35..18e3206 100755
--- a/heartbeat/rabbitmq-cluster
+++ b/heartbeat/rabbitmq-cluster
@@ -346,6 +346,8 @@ rmq_start() {
 		BaseDataDir=`dirname $RMQ_DATA_DIR`
 		if [ -f $BaseDataDir/users.erl ] ; then
 			rabbitmqctl eval "
+				%% Run only if Mnesia is ready, otherwise exit.
+				lists:any(fun({mnesia,_,_}) -> true; ({_,_,_}) -> false end, application:which_applications()) orelse halt(),
 
 				[WildPattern] = ets:select(mnesia_gvar, [ { {{rabbit_user, wild_pattern}, '\\\$1'}, [], ['\\\$1'] } ]),
 
@@ -391,6 +393,9 @@ rmq_stop() {
 	# Backup users
 	BaseDataDir=`dirname $RMQ_DATA_DIR`
 	rabbitmqctl eval "
+		%% Run only if Mnesia is still available, otherwise exit.
+		lists:any(fun({mnesia,_,_}) -> true; ({_,_,_}) -> false end, application:which_applications()) orelse halt(),
+
 		[WildPattern] = ets:select(mnesia_gvar, [ { {{rabbit_user, wild_pattern}, '\\\$1'}, [], ['\\\$1'] } ]),
 
 		Users = case WildPattern of