Custom K8ssandra operator for Data on Kuberenetes' how-to-dok project.

Please refer to the contributing-guidelines

This the kubernetes-operator which contains the following packages: 1. Apache Cassandra 2. Stargate 3. Prometheus 4. Grafana

This package a lightweight package

To install this package, you can add this to your helm repositories by

• helm repo add dokc https://dokc.github.io/Helm-Charts/

Once added, update the repository by running

• helm repo update

To check the repositories in your local setup, check if the dokc repo is added by running

• helm repo list

It must show something like this

NAME                    URL
cassandra               https://helm.k8ssandra.io/stable
traefik                 https://helm.traefik.io/traefik
minio                   https://helm.min.io
prometheus-community    https://prometheus-community.github.io/helm-charts

Once the repository is listed, you can run your k8ssandra cluster, but this would require a YAML file which would like this Replace: < > with values

 cassandra:
  version: < Cassandra Version Number, preferred version = 4.0.1 >  
  cassandraLibDirVolume:
    storageClass: local-path
    size: 5Gi
  allowMultipleNodesPerWorker: true
  heap:
   size: 1G
   newGenSize: 1G
  resources:
    requests:
      cpu: 1000m
      memory: 2Gi
    limits:
      cpu: 1000m
      memory: 2Gi
  datacenters:
  - name: < Data Center Name >
    size: < Size >
    racks:
    - name: < Rack Name >
    
kube-prometheus-stack:
  grafana:
    adminUser: < Grafana Admin User >
    adminPassword: < Grafana Password >
    
    
stargate:
  enabled: < Boolean >
  replicas: 1
  heapMB: 256
  cpuReqMillicores: 200
  cpuLimMillicores: 1000
  

To run the cluster, execute the following command: helm install -f .yaml <Instance Name (or) Cluster Name> dokc/k8s-lightweight

** The process should roughly take 4 minutes , wait for the pods to start up **

To check the status of the pods run:

kubectl get pods

NAME                                                   READY   STATUS    RESTARTS   AGE
prometheus-test-dep-kube-prometheus-s-prometheus-0     2/2     Running   0          2m43s
test-dep-cass-operator-6c75d6d684-vh2ts                1/1     Running   0          2m45s
test-dep-datacenter1-default-sts-0                     2/2     Running   0          2m28s
test-dep-datacenter1-stargate-699f64f646-w85kw         1/1     Running   0          2m45s
test-dep-grafana-57fd996d9-c58tf                       2/2     Running   0          2m45s
test-dep-kube-prometheus-s-operator-767fc8984c-9rlmj   1/1     Running   0          2m45s

Disclaimer: "It may work within 4 minutes, but it is advisable to wait for 4 minutes"

• CPU -> 4 Cores
• Memory -> 8128M