Bash Initiate Redis Cluster Using Docker

#!/bin/sh set -e # get accessible docker bridge's IP DOCKER_BRIDGE_IP=$(docker network inspect bridge | jq ".[0].IPAM.Config[0].Gateway" -r) PORT_PREFIX="1700" nodes="" # create redis configuration for each node for i in $(seq 1 6);do cat <<EOF > "/tmp/$i-redis.conf" port $PORT_PREFIX$i cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 appendonly yes bind 0.0.0.0 cluster-announce-ip $DOCKER_BRIDGE_IP cluster-announce-port $PORT_PREFIX$i EOF  # stop and remove existing redis docker container stop "myredis-$i" || true docker container rm "myredis-$i" || true # start new redis node containers docker run -v "/tmp/$i-redis.conf":/usr/local/etc/redis/redis.conf -d \ --net=host --name "myredis-$i" redis:alpine3.15 redis-server /usr/local/etc/redis/redis.conf nodes="$DOCKER_BRIDGE_IP:$PORT_PREFIX$i $nodes" done # create cluster from existing containers docker container exec myredis-1 redis-cli --cluster-yes --cluster create $nodes --cluster-replicas 1 printf "\n\n=> redis nodes:" for node in $nodes; do echo "$node" done