02-05-2021

Helm Chart Cheat Sheet

So here the helm commands cheat sheet list for quick go through: helm help; In case you want any help on command available with helm. Lets suppose you want more details about any command option you can use helm help as below. Here in the below case we taken help on search command: # helm help search. Helm Cheat Sheet PDF Introduction Helm is a Kubernetes package manager that deploys helm charts, collections of pre-configured Kubernetes application resources. Using Helm # update charts repo helm repo update # install postgre chart # helm install -name nginx stable/nginx-ingress helm install -name pg -namespace default -set postgresPassword=postgres,persistence.size=1Gi stable/postgresql kubectl get pods -n default # list installed charts helm ls # delete postgre $ helm delete my-postgre # delete.

`minikube`¶

To access the Kubernetes Dashboard, run this command in a shell after starting Minikube to get the address:

The minikube VM is exposed to the host system via a host-only IP address, that can be obtained with the minikube ip command

`kubectl`¶

Stock Chart Cheat Sheet

Run a particular image on the cluster (creates a deployment automatically)

kubectl get - list resources.
- kubectl get deployment to get all deployments
- kubectl get pods -l app=nginx to get pods with label 'app: nginx'
kubectl describe - show detailed information about a resource
kubectl logs - print the logs from a container in a pod
kubectl exec - execute a command on a container in a pod

Using the Docker daemon in the Minikube VM¶

When using a single VM of Kubernetes, it’s really handy to reuse the minikube’s built-in Docker daemon

Just make sure you tag your Docker image with something other than ‘latest’ and use that tag while you pull the image. Otherwise, if you do not specify version of your image, it will be assumed as :latest, with pull image policy of Always correspondingly, which may eventually result in ErrImagePull as you may not have any versions of your Docker image out there in the default docker registry (usually DockerHub) yet.

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