ukhomeoffice / docker-redis

Docker Redis image with sentinel clustering in kubernetes support

docker-redis

Docker image for redis. This image is designed to be used with kubernetes, it may work outside kubernetes as well.

It is highly recommended to read through redis sentinel documentation.

Launching it in kubernetes

First of all create a single replica pod of redis and redis-sentinel. Both containers will notice that ${REDIS_SENTINEL_SERVICE_HOST} and ${REDIS_SENTINEL_SERVICE_PORT} are empty and assume that this is an initial bootstrap of redis. Redis sentinel will connect to the master at $(hostname -i) and start monitoring it.

kubectl create -f kube/redis-controller.yaml

Then you need to create redis sentinel service, which will become your redis sentinel endpoint for the following redis pods.

kubectl create -f kube/redis-sentinel-service.yaml

Once the service is up and running, you can check whether it is working properly. Run the following command in some temporary container.

redis-cli -h ${REDIS_SENTINEL_SERVICE_HOST} -p 26379 INFO

Next, we can start scaling our redis out. It is recommended to add redis and redis-sentinel replicas one by one.

kubectl scale rc redis --replicas=2

Wait a minute and check on the sentinel service redis-cli -h ${REDIS_SENTINEL_SERVICE_HOST} -p 26379 INFO, then scale to --replicas=3.

docker-redis's Issues

Missing a travis ci config

Make life easier for people submitting code to your repository. Make sure that you double check that their code works the best you can (even if that's just running a build of the package) in travis. This way potential contributors can fix bugs before you even need to look at their request. https://gist.github.com/PurpleBooth/6f1ba788bf70fb501439

Needs license, code of conduct, contributing.md

Fix the build