Redis Cluster on Kubernetes - startup script

redis-startup.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: redis-startup
  namespace: redis
data:
  redis-startup.sh: |
    #!/bin/sh
    if [ -f "/conf/nodes-6379.conf" ]; then
      echo "Cluster details exists /conf/nodes-6379.conf.. starting script to do CLUSTER MEET when node is up"
      while :
      do
        pong=$(timeout 5 redis-cli -c -a admin ping)
        if [ ${pong} == 'PONG' ];then
            nslookup redis.redis.svc.cluster.local | grep "Address:" | tail -n +2 | awk '{print "CLUSTER MEET " $2 " 6379"}' > /tmp/redis_meet_commands.txt
            nslookup redis.redis.svc.cluster.local | grep "Address:" | tail -n +2 | awk '{print $2}' > /tmp/redis_ip_list.txt

            echo "IP list" 
            cat /tmp/redis_ip_list.txt

            echo "Cluster meet commands"
            cat /tmp/redis_meet_commands.txt

            while read line
            do
              echo "Cluster meet applying on ${line}"
              cat /tmp/redis_meet_commands.txt | redis-cli -c -a admin -h ${line}

            done < /tmp/redis_ip_list.txt

            exit 0
        fi
        sleep 10
      done
    else
      echo "Cluster details doesn't exist .. A new node"
    fi