Kubernetes Redis Cluster

Create Disks

gcloud compute disks create --size=10GB \
  'redis-1' 'redis-2' 'redis-3' \
  'redis-4' 'redis-5' 'redis-6'

Create Redis Cluster Configuration

kubectl create configmap redis-conf --from-file=redis.conf

Create Redis Nodes

kubectl create -f replicasets

Create Redis Services

kubectl create -f services

Connect Nodes

kubectl run -i --tty ubuntu --image=ubuntu \
  --restart=Never /bin/bash

apt-get update
apt-get install -y python2.7 python-pip redis-tools dnsutils

Note: redis-trib doesn't support hostnames (see this issue), so we use dig to resolve our cluster IPs.

pip install redis-trib

redis-trib.py create `dig +short redis-1.default.svc.cluster.local`:6379 `dig +short redis-2.default.svc.cluster.local`:6379 `dig +short redis-3.default.svc.cluster.local`:6379
redis-trib.py replicate --master-addr `dig +short redis-1.default.svc.cluster.local`:6379 --slave-addr `dig +short redis-4.default.svc.cluster.local`:6379
redis-trib.py replicate --master-addr `dig +short redis-2.default.svc.cluster.local`:6379 --slave-addr `dig +short redis-5.default.svc.cluster.local`:6379
redis-trib.py replicate --master-addr `dig +short redis-3.default.svc.cluster.local`:6379 --slave-addr `dig +short redis-6.default.svc.cluster.local`:6379

Add a new node

gcloud compute disks create --size=10GB 'redis-7'

kubectl create -f replicaset/redis-7.yaml

kubectl create -f services/redis-7.yaml

CLUSTER MEET 10.131.242.7 6379