Initial commit

[ta/monitoring.git] / src / redismonitor.sh

diff --git a/src/redismonitor.sh b/src/redismonitor.sh
new file mode 100755 (executable)
index 0000000..bef9b49
--- /dev/null
+++ b/src/redismonitor.sh
@@ -0,0 +1,38 @@
+#! /bin/bash
+
+# Copyright 2019 Nokia
+
+# 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.
+
+echo "redis monitor started"
+
+filename=/etc/redis.conf
+passwd=$(egrep -e "^requirepass" $filename | awk '{print $2}')
+
+while [ 1 ]; do
+    redis-cli -a $passwd info | grep "role:master" 2> /dev/null 1>&2
+    master=$?
+
+    systemctl status rediscontroller 2> /dev/null 1>&2
+    active=$?
+
+    if [ $active -eq 0 -a $master -ne 0 ]; then
+        echo "Changing redis db to master"
+        /opt/monitoring/become-redis-master.sh
+    elif [ $active -ne 0 -a $master -eq 0 ]; then
+        echo "Changing redis db to slave"
+        /opt/monitoring/become-redis-slave.sh $1
+    fi
+
+    sleep 10
+done