kube-lookout is a Python 3 based kubernetes controller to post changes to a kubernetes deployment to a slack channel.

It is especially useful when using CI/CD tools like Weave Flux. We use it to allow developers gain insights into the state of a new deployment rollout without needing to gain access to the cluster.

It will notify you when:

• Ready replicas is less than the desired replicas
• When a new version of a deployment is rolling out (with the deployment status)

You can try it out on your cluster with the manifests here. Just insert your slack token.