[stable/redis] fix master joining cluster as slave (#15258)

Fixes #15115

Signed-off-by: Sameer Naik <sameer@bitnami.com>

stable/redis/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: redis
-version: 8.0.16
+version: 8.0.17
 appVersion: 5.0.5
 description: Open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
 keywords:

stable/redis/templates/redis-master-statefulset.yaml

@@ -179,6 +179,10 @@ spec:
             printf "\nsentinel auth-pass {{ .Values.sentinel.masterSet }} $REDIS_PASSWORD" >> /opt/bitnami/redis-sentinel/etc/sentinel.conf
             {{- end }}
           fi
+          echo "Getting information about current running sentinels"
+          # Get information from existing sentinels
+          existing_sentinels=$(timeout -s 9 {{ .Values.sentinel.initialCheckTimeout }} redis-cli --raw -h {{ template "redis.fullname" . }} -a $REDIS_PASSWORD -p {{ .Values.sentinel.service.sentinelPort }} SENTINEL sentinels {{ .Values.sentinel.masterSet }})
+          echo "$existing_sentinels" | awk -f /health/parse_sentinels.awk | tee -a  /opt/bitnami/redis-sentinel/etc/sentinel.conf
 
           redis-server /opt/bitnami/redis-sentinel/etc/sentinel.conf --sentinel
         env: