K8s/Run

export KUBECONFIG="${HOME}/.kube/lke-dev-kubeconfig.yaml" export KUBECONFIG="${HOME}/.kube/gke-uat-kubeconfig.yaml" export KUBECONFIG="${HOME}/.kube/eks-pro-kubeconfig.yaml"

export KUBECONFIG="${HOME}/.kube/config" kubectl config get-contexts kubectl cluster-info

kubectl get ns|grep swiss-knife kubectl delete ns swiss-knife kubectl create ns swiss-knife

Run

Run » PSQL

kubectl -n swiss-knife run -i --tty --rm psql --image=alpine --restart=Never -- sh
echo -n password: ;read -s PGPASSWORD;export PGPASSWORD
apk --update add postgresql-client inetutils-telnet

psql -d postgres -U postgres -h postgresql.postgresql

Run » Infinity

kubectl -n swiss-knife run infinity --image=alpine -- sleep infinity
kubectl -n swiss-knife exec -it infinity -- sh
apk --update add inetutils-telnet

Run » Redis CLI

kubectl -n swiss-knife run -i --tty --rm redis-cli --image=alpine --restart=Never -- sh
echo -n password: ;read -s REDISCLI_AUTH;export REDISCLI_AUTH;echo
apk --update add redis inetutils-telnet

echo 'ping'|redis-cli -h redis-headless.redis

Run » MinIO CLI

kubectl -n swiss-knife run -i --tty --rm minio-cli --image=alpine --restart=Never -- sh
apk --update add minio-client inetutils-telnet

echo -n password: ;\
read -s MINIO_SERVER_ROOT_PASSWORD;\
export  MINIO_SERVER_ROOT_PASSWORD;\
export  MINIO_SERVER_ROOT_USER=admin;\
export  MINIO_SERVER_HOST=minio.k8s.local;echo

mcli ping --error-count 5 minio.minio
mcli ping --count 5 minio.minio

telnet minio.minio 9000
telnet minio.minio 9001

Apply

Apply » Infinity

kubectl -n swiss-knife get pvc swiss-knife-${USER}-pvc kubectl -n swiss-knife get pv swiss-knife-${USER}-pv kubectl get pv swiss-knife-${USER}-pv kubectl -n swiss-knife delete pods infinity kubectl -n swiss-knife run infinity --image=alpine --overrides="$(cat << JSON { "apiVersion": "v1", "spec": { "volumes": [{ "name": "data", "persistentVolumeClaim": {"claimName": "swiss-knife-${USER}-pvc"}}], "containers": [{ "name": "infinity", "image": "alpine", "volumeMounts": [{ "name": "data", "mountPath": "/opt/data-${USER}"}]}]}} JSON )" -- sleep infinity kubectl -n swiss-knife delete pvc swiss-knife-${USER}-pvc kubectl -n swiss-knife delete pv swiss-knife-${USER}-pv kubectl delete pv swiss-knife-${USER}-pv

cat << YML | kubectl apply -f - --- apiVersion: v1 kind: PersistentVolume metadata: name: swiss-knife-${USER}-pv annotations: pv.kubernetes.io/provisioned-by: k8s.io/minikube-hostpath spec: capacity: storage: 10Gi hostPath: path: /tmp/hostpath-provisioner/swiss-knife/data-${USER}-pv accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Delete storageClassName: standard volumeMode: Filesystem --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: swiss-knife-${USER}-pvc namespace: swiss-knife labels: app.kubernetes.io/component: primary app.kubernetes.io/instance: infinity app.kubernetes.io/name: infinity annotations: volume.beta.kubernetes.io/storage-provisioner: k8s.io/minikube-hostpath volume.kubernetes.io/storage-provisioner: k8s.io/minikube-hostpath spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi volumeName: swiss-knife-${USER}-pv storageClassName: standard volumeMode: Filesystem --- YML

Playground

kubectl -n swiss-knife delete pods minio-cli kubectl -n swiss-knife delete pods redis-cli	kubectl -n swiss-knife delete pods infinity kubectl -n swiss-knife delete pods psql	kubectl -n swiss-knife run infinity --image=alpine -- sleep infinity kubectl -n swiss-knife run ubuntu --image=ubuntu -- sleep infinity

References

Helm » Prometheus Stack Helm » Cert Manager Helm » Prometheus Helm » PostgreSQL Helm » SonarQube Helm » Grafana Helm » Jenkins Helm » GitLab Helm » MinIO Helm	Helm » Camunda Helm » Keycloak Helm » Traefik Helm » Nexus Helm » Redis
K8s » Configure Service Accounts for Pods K8s » Restart Pods With Kubectl K8s » Interactive Pod K8s » Restart Pods Docker » Makefile Kubernetes Minikube Kubectl CURL K8s	K8s » kubectl run » sleep infinity K8s » kubectl rollout K8s » CSI Hostpath Driver K8s » Ingress MinIO CIDR UFW