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Setting Up Cassandra
First things first. Helm is kind of like a high-powered package manager for Kubernetes. In order to use the packages for today's workshop, we will need to first add the correct repositories for helm to use.
We will pull recipies from https://helm.k8ssandra.io/ where you can find all the documentation.
✅ Step 1b: Add the repository to Helm
helm repo add k8ssandra https://helm.k8ssandra.io/📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm repo add k8ssandra https://helm.k8ssandra.io/
"k8ssandra" has been added to your repositories ✅ Step 1c: Update helm
helm repo update📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "k8ssandra" chart repository
Update Complete. ⎈Happy Helming!⎈
✅ Step 1d: Add the repository to Traefik(leveraging Ingress)
In Kubernetes, network ports and services are most often handled by an Ingress controller.
For today's lab, the K8ssandra side of things will be using Traefik. Let's install that now.
helm repo add traefik https://helm.traefik.io/traefik📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm repo add traefik https://helm.traefik.io/traefik
"traefik" has been added to your repositories ✅ Step 1e: Update Helm as before
helm repo update📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "k8ssandra" chart repository
...Successfully got an update from the "traefik" chart repository
Update Complete. ⎈Happy Helming!⎈
ec2-user@ip-172-31-5-5:✅ Step 1f: Install traefik with following configuration traefik.values.yaml
helm install traefik traefik/traefik --create-namespace -f traefik.values.yaml📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm install traefik traefik/traefik --create-namespace -f traefik.values.yaml
NAME: traefik
LAST DEPLOYED: Tue Nov 17 15:00:53 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None ✅ Step 1g: Use Helm to Install K8ssandra
Lets install our Cassandra by running a helm install of K8ssandra. The long install command will be shortened down post release candidate as it will no longer need the ingress config specified. Start tools installation. It can take about 30s without log to install.
helm install k8ssandra-cluster-a k8ssandra/k8ssandra📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm install k8ssandra-tools k8ssandra/k8ssandra
NAME: k8ssandra-tools
LAST DEPLOYED: Tue Nov 17 15:01:22 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None ✅ Step 1h: Install a k8ssandra cluster
helm install k8ssandra-cluster-a k8ssandra/k8ssandra-cluster --set ingress.traefik.enabled=true --set ingress.traefik.repair.host=repair.${ADDRESS} --set ingress.traefik.monitoring.grafana.host=grafana.${ADDRESS} --set ingress.traefik.monitoring.prometheus.host=prometheus.${ADDRESS}
📃output
ec2-user@ip-172-31-5-5:~/kubernetes-workshop-online> helm install k8ssandra-cluster-a k8ssandra/k8ssandra-cluster --set ingress.traefik.enabled=true --set in
gress.traefik.repair.host=repair.${ADDRESS} --set ingress.traefik.monitoring.grafana.host=grafana.${ADDRESS} --set ingress.traefik.monitoring.prometheus.host
=prometheus.${ADDRESS}
NAME: k8ssandra-cluster-a
LAST DEPLOYED: Tue Nov 17 15:04:56 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
If you are using your own instances then replace ${ADDRESS} with 127.0.0.1
Verify everything is up running. We need to wait till everything has running or completed status before moving on. It may need up to 3 minutes
watch kubectl get pods📃output
Every 2.0s: kubectl get pods ip-172-31-9-15.eu-central-1.compute.internal: Tue Nov 17 14:20:55 2020
NAME READY STATUS RESTARTS AGE
cass-operator-cd9b57568-2fck2 1/1 Running 0 4m27s
grafana-deployment-cfc94cf66-j8mw5 1/1 Running 0 116s
k8ssandra-cluster-a-grafana-operator-k8ssandra-6466cf94c9-vv6vl 1/1 Running 0 3m38s
k8ssandra-cluster-a-reaper-k8ssandra-59cb88b674-wmb74 1/1 Running 0 75s
k8ssandra-cluster-a-reaper-k8ssandra-schema-gsl64 0/1 Completed 4 3m31s
k8ssandra-cluster-a-reaper-operator-k8ssandra-56cc9bf47c-9ghsl 1/1 Running 0 3m38s
k8ssandra-dc1-default-sts-0 2/2 Running 0 3m36s
k8ssandra-tools-kube-prome-operator-6d556b76f8-5h54b 1/1 Running 0 4m27s
prometheus-k8ssandra-cluster-a-prometheus-k8ssandra-0 2/2 Running 1 3m38s
traefik-7877ff76c9-hpb97 1/1 Running 0 5m5s
To exit watch use Ctrl + C
From this command we will be able to see the pods as they come online. Notice the steps as they complete.
Proceed to the Step II
Got questions? Ask us using discord chat or a community forum!