k8s-kafka-cql-kubeless_Stack

Easy automated setup and cleanup for deploying a poc for kubernetes cluster

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Prerequisites

• Must have a kubernetes cluster configured and have its kubeconfig file to reach it
• Must have the kubectl, and kubeless clients installed for your OS and architecture
• Must have UNIX environment
• Must have configured an Nginx ingress controller and backend for the cluster
• Must have NodeJS v8 or higher on your client machine

Config

The configurations are in a file source_me. To create your own source_me config file, copy the example source me file and change the values to your configs.

You can do that with the following command.

cp source_me.example ./source_me

The configurations for the ingress are in the templates/producer-ingress.yaml.example but must be configured with YOUR host.

You can fo that with the following command.

cp templates/producer-ingress.yaml.example templates/producer-ingress.yaml

Next you must open the ingress file vim templates/producer-ingress.yaml and edit to change the host property to your host with producer being the subdomain. E.G. producer.example.com

The configurations for the client at client/insertPost.js must be configured with YOUR host. Simply open the file and change the host property to your hostname

Once you have finished configuring the files, open source_me and change the configurations as needed.

- `KUBECONFIG` is the path to your kubeconfig file which contains the details for kubectl to connect to your cluster
- `RBAC` can be set to *true*, *false*, or *openshift* depending on the configuration of your cluster
- `KAFKA_TOPIC` is the name of the topic you want to create and or push/pull from in your cluster
- `HOST` is the hostname where your endpoints will be for the applications in your cluster
- `CASSANDRA_CLUSTER_SIZE` is exactly what it sounds like. Its how many nodes you want your cassandra ring to have.

Launching

Really you just need to do this and wait:

./deploy.sh

You can check on your cluster afterwards with this:

kubectl get pods --all-namespaces

Here you will see all pods deployed (and some still being deployed)

Once pods have finished deploying, you can test with the client.

 cd client
 node insertPost.js

Cleanup/Undo

If you have already deployed, you can clean it all up with this:

./cleanup.sh

Note: Due to the time it takes kubernetes to add and remove resources, for best results, the cleanup and deploy scripts should not be run back to back without allowing a few minutes between runs.