K8s

microk8s status --wait-ready
microk8s enable dashboard dns ingress

microk8s kubectl get all --all-namespaces
echo "alias kubectl='microk8s kubectl'" > .bash_aliases
source .bash_aliases
kubectl get nodes

microk8s start
microk8s stop
microk8s dashboard-proxy

microk8s.reset
sudo snap disable microk8s
sudo snap remove microk8s

Deploy kafka on microk8s with helm and strimzi

https://developer.lightbend.com/guides/akka-data-pipelines-iot-sensor-tutorial/set-up.html

https://developer.lightbend.com/docs/cloudflow/current/install/how-to-install-and-use-strimzi.html

Minikube

install minikube https://minikube.sigs.k8s.io/docs/start/

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

echo "alias kubectl='minikube kubectl'" > .bash_aliases
source .bash_aliases

uninstall minikube

minikube stop; minikube delete
docker stop
docker ps -aq
rm -r ~/.kube ~/.minikube
sudo rm /usr/local/bin/localkube /usr/local/bin/minikube
systemctl stop '*kubelet*.mount'
sudo rm -rf /etc/kubernetes/
docker system prune -af --volumes

https://strimzi.io/docs/operators/latest/quickstart.html

https://strimzi.io/quickstarts/

Statefulsets - mysql

https://www.magalix.com/blog/kubernetes-and-database

https://v2-1.docs.kubesphere.io/docs/quick-start/mysql-deployment/

Kubectl commands

list topics in a namespace

kubectl get kt -n namespace name
kubectl get kt -n my-kafka-project

describe pod

kubectl describe pod -n namespace pod
kubectl describe pod -n my-kafka-project my-cluster-kafka-0

list pods in namespace

kubectl get pods --all-namespaces
kubectl get pods -n <namespace>

list everything in namespace

kubectl get all -n <namespace>

check pod logs

kubectl -n my-kafka-project logs my-cluster-kafka-0
kubectl -n <namespace> loges <pod>