ctdb-tests: Check that no IPs are assigned when failover is disabled

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13589

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Aug 24 14:13:12 CEST 2018 on sn-devel-144

ctdb/tests/simple/19_ip_takeover_noop.sh

@@ -3,7 +3,10 @@
 test_info()
 {
     cat <<EOF
-Check that CTDB operates correctly if there are 0 public IPs configured
+Check that CTDB operates correctly if:
+
+* failover is disabled; or
+* there are 0 public IPs configured
 
 This test only does anything with local daemons.  On a real cluster it
 has no way of updating configuration.
@@ -30,6 +33,28 @@ select_test_node_and_ips
 
 daemons_stop
 
+echo "Starting CTDB with failover disabled..."
+setup_ctdb --disable-failover
+daemons_start
+
+wait_until_ready
+
+echo "Getting IP allocation..."
+try_command_on_node -v any "$CTDB ip all | tail -n +2"
+
+while read ip pnn ; do
+	if [ "$pnn" != "-1" ] ; then
+		die "BAD: IP address ${ip} is assigned to node ${pnn}"
+	fi
+done <<EOF
+$out
+EOF
+
+echo "GOOD: All IP addresses are unassigned"
+
+echo "----------------------------------------"
+daemons_stop
+
 echo "Starting CTDB with an empty public addresses configuration..."
 setup_ctdb --no-public-addresses
 daemons_start

ctdb/tests/simple/scripts/local_daemons.bash

@@ -94,9 +94,11 @@ setup_ctdb ()
 {
 	local no_public_addresses=false
 	local no_event_scripts=false
+	local disable_failover=false
 	case "$1" in
 	--no-public-addresses) no_public_addresses=true ;;
 	--no-event-scripts)    no_event_scripts=true    ;;
+	--disable-failover)    disable_failover=true    ;;
 	esac
 
 	nodes_file="${SIMPLE_TESTS_VAR_DIR}/nodes"
@@ -154,6 +156,9 @@ setup_ctdb ()
 	persistent database directory = ${db_dir}/persistent
 	state database directory = ${db_dir}/state
 
+[failover]
+	disabled = ${disable_failover}
+
 [event]
 	debug script = debug-hung-script.sh
 EOF