nuzumco / mongo-k8s-sidecar

Kubernetes sidecar for Mongo

Mongo Kubernetes Replica Set Sidecar

This project is as a PoC to setup a mongo replica set using Kubernetes. It should handle resizing of any type and be resilient to the various conditions both mongo and kubernetes can find themselves in.

How to use it

The docker image is hosted on docker hub and can be found here:
https://hub.docker.com/r/cvallance/mongo-k8s-sidecar/

An example kubernetes replication controller can be found in the examples directory on github here:
https://github.com/cvallance/mongo-k8s-sidecar

There you will also find some helper scripts to test out creating the replica set and resizing it.

Settings

• MONGO_SIDECAR_POD_LABELS
  Required: YES
  This should be a be a comma separated list of key values the same as the podTemplate labels. See above for example.
• MONGO_SIDECAR_SLEEP_SECONDS
  Required: NO
  Default: 5
  This is how long to sleep between work cycles.
• MONGO_SIDECAR_UNHEALTHY_SECONDS
  Required: NO
  Default: 15
  This is how many seconds a replica set member has to get healthy before automatically being removed from the replica set.

Debugging

TODO: Instructions for cloning, mounting and watching

Still to do

• Add tests!
• Add to circleCi
• Alter k8s call so that we don't have to filter in memory