[WIP] cassandra: Clean-up removing old examples

[chrislovecnm]

I am working on getting some changes pushed to our container. Once that is done I can test with a stable container.

Fixes #10, #7

TODO

• add new container to manifest
• update docs with new container
• some testing

[ahmetb]

@chrislovecnm I am not sure we're good with deleting the example altogether. I have an active plan to move the README.md of this example to the Kubernetes.io website (#12 and kubernetes/website#4134) and applying this patch would remove this tutorial temporarily, and conflict with the work I am doing.

Instead of removing this example first, I would much rather prefer you just patch it in-place.

[chrislovecnm]

So I am not removing the example, just portions of the example that are no longer functioning, and are not recommended. The DS example is broken, and with StatefulSets I would never recommend running a DS. Cassandra does not like when mulitple instances start at the same time.

I am happy to leave this open until you merge, but really we should update this example before it is on our website.

[ahmetb]

My bad, the rendering tricked me. I'll review.

[ahmetb]

I can help you update the gcr.io/google-samples/cassandra image if necessary, if you check in the Dockerfile.

Currently with this patch, we won't have the Dockerfile and you'll be the only one who has write access to the image.

[ahmetb]

@chrislovecnm I just sent #16 moving the tutorial (README.md) to the kubernetes/kubernetes.github.io repository repository. (kubernetes/website#4179)

I saw that you have some non-trivial changes in README.md, we probably need to apply those to the kubernetes/kubernetes.github.io repository now.

[ahmetb]

@chrislovecnm sorry for the unnecessary back and forth here. We decided to keep the cassandra/README.md in this repo, but I made some minor changes, so it renders on the website correctly at its new home: https://kubernetes.io/docs/tutorials/stateful-application/cassandra/

Do you mind resolving the merge conflicts when you have time?

[chrislovecnm]

Yah no worries. I think I have a base container that is happy now.

Are we leaving the container in gcr.io or can I use one that I maintain?

[ahmetb]

Let's leave it on gcr.io. I can easily update it if you have a new Dockerfile.

[ahmetb]

Let's update references to gcr.io/google-samples/cassandra:v13 and I'll make it available if you can check in the Dockerfile back.

[ahmetb]

#38 made some improvements to Cassandra tutorial, it would be great if we can apply the changes suggested above to that.

[krjw]

I figured that the current example is meant to work with 3.10, which is not available anymore... bump it to 3.11.0 in the make file? Otherwise building the image fails!

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