Windows Commands

	# create a chart
	helm create ourchart
	# view the chart directory
	ls .\ourchart
	# view the templates directory
	ls .\ourchart\templates
	# remove all yaml files in the templates directory
	rm .\ourchart\templates\*yaml
	# generate deployment yaml
	kubectl create deployment nginx `
	--image=nginx `
	--dry-run=client `
	--output=yaml
	# create a new deployment yaml file
	kubectl create deployment nginx `
	--image=nginx `
	--dry-run=client `
	--output=yaml > .\ourchart\templates\deployment.yaml
	# create a deployment (in order to run the expose command below)
	kubectl create deployment nginx --image=nginx
	# generate service yaml
	kubectl expose deployment nginx `
	--type=LoadBalancer `
	--port=80 `
	--dry-run=client `
	--output=yaml
	# create a new service yaml file
	kubectl expose deployment nginx `
	--type=LoadBalancer `
	--port=80 `
	--dry-run=client `
	--output=yaml > .\ourchart\templates\service.yaml
	# delete the deployment
	kubectl delete deployment nginx
	# replace NOTES.txt file
	rm .\ourchart\templates\NOTES.txt
	echo 'A test Helm Chart' > .\ourchart\templates\NOTES.txt
	# remove the charts and tests directory within the chart (they're not needed)
	rm -r .\ourchart\charts
	rm -r .\ourchart\templates\tests
	# deploy the chart
	helm install ourchart .\ourchart
	###################################################################################################
	###################################################################################################
	# If you are running Powershell v5.1 and run into the following error: -
	#
	# Error: unable to build kubernetes objects from release manifest: error parsing :
	# error converting YAML to JSON: yaml: invalid leading UTF-8 octet
	#
	# Tomica Kaniski posted a work around here: -
	# https://blog.kaniski.eu/2020/09/having-fun-with-helm-and-file-encoding/
	#
	# If you then run into this error: -
	# Error: unable to build kubernetes objects from release manifest: error validating "":
	# error validating data: apiVersion not set
	#
	# Check the version of Helm you are using. Upgrading to Helm v3.3.1 will fix this issue: -
	# choco upgrade kubernetes-helm
	###################################################################################################
	###################################################################################################
	# view release
	helm list
	# view kubernetes objects
	kubectl get all
	# delete the release
	helm delete ourchart
	# update the deployment yaml to use template directives
	# copy {{ .Release.Name }} in for the deployment name
	# also update the value.yaml file, removing the old file
	rm .\ourchart\values.yaml
	# and add in a custom value
	echo 'containerImage: nginx:1.17' > .\ourchart\values.yaml
	# update the deployment yaml to use the new default value
	# copy {{ .Values.containerImage }} in for the container image name
	# now redeploy the chart
	helm install ourchart .\ourchart
	# view release
	helm list
	# view kubernetes objects
	kubectl get all
	# view the container image in the deployment
	kubectl get deployment -o jsonpath='{ .items[*].spec.template.spec.containers[*].image }'
	# now upgrade the chart, overriding the image name in the values file
	helm upgrade ourchart .\ourchart --set containerImage=nginx:1.18
	# view the container image in the deployment
	kubectl get deployment -o jsonpath='{ .items[*].spec.template.spec.containers[*].image }'
	# package the chart
	helm package .\ourchart --destination C:\Charts
	# view packaged chart
	ls C:\Charts\

view raw helm.sh hosted with by GitHub

Linux Commands

$ mkdir demo2
$ cd demo2
$ helm create ourchart
$ ls .\ourchart
$ ls ourchart
$ ls ourchart/templates/
$ rm -rf ourchart/templates/*.yaml
$ ls ourchart/templates/
$ kubectl create deployment nginx --image=nginx --dry-run=client --output=yaml
$ kubectl create deployment nginx --image=nginx --dry-run=client --output=yaml > ourchart/templates/deployment.yaml
$ kubectl create deployment nginx --image=nginx
$ kubectl expose deployment nginx --type=LoadBalancer --port=80 --dry-run=client --output=yaml
$ kubectl expose deployment nginx --type=LoadBalancer --port=80 --dry-run=client --output=yaml > ourchart/templates/service.yaml
$ kubectl delete deployment nginx
$ rm ourchart/templates/NOTES.txt
$ echo 'A test Helm Chart' > ourchart/templates/NOTES.txt
$ rm -rf ourchart/charts/
$ rm -rf ourchart/templates/tests/
$ tree
$ kubectl deploy
$ helm list
$ helm uninstall mysql devopsx
$ kubectl get pods
$ helm install ourchart ./ourchart
$ kubectl get all
$ curl http://10.104.136.0
$ helm list
$ kubectl get all
$ helm delete ourchart
$ rm ourchart/values.yaml
$ echo 'containerImage: nginx:1.17' > ourchart/values.yaml
$ more ourchart/values.yaml
$ vi ourchart/templates/deployment.yaml
$ helm install ourchart ./ourchart
$ kubectl get all
$ kubectl get deployment -o jsonpath='{ .items[*].spec.template.spec.containers[*].image }'
$ helm upgrade ourchart ./ourchart --set containerImage=nginx:1.18
$ kubectl get all
$ kubectl get deployment -o jsonpath='{ .items[*].spec.template.spec.containers[*].image }'
$ helm list
$ helm show ourchart -h
$ helm list -h
$ helm get -h
$ helm upgrade -h
$ helm package ./ourchart --destination package

Rajesh Kumar

I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I am working at Cotocus. I blog tech insights at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at I reviewed , and SEO strategies at Wizbrand. 

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