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DevOpsCorner Helm Chart

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Helm chart for devopscorner services (Semantic Version)


Prerequirements

  • Helm

    ### Linux ###
    $ curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3
    $ chmod 700 get_helm.sh
    $ ./get_helm.sh
    
    ### MacOS ###
    $ brew install helm
    
  • Helmfile

    wget https://github.com/roboll/helmfile/releases/download/v0.139.7/helmfile_linux_amd64
    chmod +x helmfile_linux_amd64
    sudo mv helmfile_linux_amd64 /usr/local/bin/helmfile
    
  • Helm Plugins

    helm plugin install https://github.com/databus23/helm-diff
    helm plugin install https://github.com/hypnoglow/helm-s3.git
    
  • Added Mandatory Repository

    helm repo add stable https://charts.helm.sh/stable
    helm repo update
    

Helm Repository

  • Check Repository Helm

    helm repo list
    ----
    NAME            URL
    stable          https://charts.helm.sh/stable
    
  • Adding Repository Helm

    ### LAB ###
    helm s3 init s3://devopscorner-helm-chart/lab
    AWS_REGION=ap-southeast-1 helm repo add devopscorner-lab s3://devopscorner-helm-chart/lab
    
    ### STAGING ###
    helm s3 init s3://devopscorner-helm-chart/staging
    AWS_REGION=ap-southeast-1 helm repo add devopscorner-staging s3://devopscorner-helm-chart/staging
    
    ### PRODUCTION ###
    helm s3 init s3://devopscorner-helm-chart/prod
    AWS_REGION=ap-southeast-1 helm repo add devopscorner s3://devopscorner-helm-chart/prod
    
    helm repo update
    

Testing Helm

  • Testing the chart template

    helm template ./api -f api/values.yaml
    helm template ./backend -f backend/values.yaml
    helm template ./frontend -f frontend/values.yaml
    helm template ./svcrole -f svcrole/values.yaml
    

Create Helm Template

  • Create a zip package of helm chart

    helm package api
    helm package backend
    helm package frontend
    helm package svcrole
    

Update Helm Template

  • Push chart into private repository

    ### LAB ###
    helm s3 push api-[version].tgz devopscorner-lab --force
    helm s3 push backend-[version].tgz devopscorner-lab --force
    helm s3 push frontend-[version].tgz devopscorner-lab --force
    helm s3 push svcrole-[version].tgz devopscorner-lab --force
    
    ### STAGING ###
    helm s3 push api-[version].tgz devopscorner-staging --force
    helm s3 push backend-[version].tgz devopscorner-staging --force
    helm s3 push frontend-[version].tgz devopscorner-staging --force
    helm s3 push svcrole-[version].tgz devopscorner-staging --force
    ---
    ### PRODUCTION ###
    helm s3 push api-[version].tgz devopscorner --force
    helm s3 push backend-[version].tgz devopscorner --force
    helm s3 push frontend-[version].tgz devopscorner --force
    helm s3 push svcrole-[version].tgz devopscorner --force
    

Changing Version Helm

  • Update version value in Chart Template Chart.yaml

    apiVersion: v1
    name: api
    description: A Helm chart for Kubernetes
    
    # A chart can be either an 'application' or a 'library' chart.
    #
    # Application charts are a collection of templates that can be packaged into versioned archives
    # to be deployed.
    #
    # Library charts provide useful utilities or functions for the chart developer. They're included as
    # a dependency of application charts to inject those utilities and functions into the rendering
    # pipeline. Library charts do not define any templates and therefore cannot be deployed.
    type: application
    
    # This is the chart version. This version number should be incremented each time you make changes
    # to the chart and its templates, including the app version.
    # Versions are expected to follow Semantic Versioning (https://semver.org/)
    version: 0.3.0     ### Change HERE
    
    # This is the version number of the application being deployed. This version number should be
    # incremented each time you make changes to the application. Versions are not expected to
    # follow Semantic Versioning. They should reflect the version the application is using.
    # It is recommended to use it with quotes.
    appVersion: "1.16.0"
    

HELM Template Structure

lab
├── api
│   ├── Chart.yaml
│   ├── api.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   ├── clusterrole.yaml
│   │   ├── configmap.yaml
│   │   ├── deployment.yaml
│   │   ├── hpa.yaml
│   │   ├── ingress.yaml
│   │   ├── secret.yaml
│   │   ├── service.yaml
│   │   └── serviceaccount.yaml
│   └── values.yaml
├── backend
│   ├── Chart.yaml
│   ├── backend.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   ├── clusterrole.yaml
│   │   ├── configmap.yaml
│   │   ├── deployment.yaml
│   │   ├── hpa.yaml
│   │   ├── ingress.yaml
│   │   ├── secret.yaml
│   │   ├── service.yaml
│   │   └── serviceaccount.yaml
│   └── values.yaml
├── configmap
│   ├── Chart.yaml
│   ├── configmap.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   └── configmap.yaml
│   └── values.yaml
├── frontend
│   ├── Chart.yaml
│   ├── frontend.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   ├── clusterrole.yaml
│   │   ├── configmap.yaml
│   │   ├── deployment.yaml
│   │   ├── hpa.yaml
│   │   ├── ingress.yaml
│   │   ├── secret.yaml
│   │   ├── service.yaml
│   │   └── serviceaccount.yaml
│   └── values.yaml
├── helm-pack-lab.sh
├── helm-push-lab.sh
├── secretref
│   ├── Chart.yaml
│   ├── secretref.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   └── secret.yaml
│   └── values.yaml
...
...
├── stateful
│   ├── Chart.yaml
│   ├── stateful.yaml
│   ├── templates
│   │   ├── _helpers.tpl
│   │   ├── clusterrole.yaml
│   │   ├── configmap.yaml
│   │   ├── deployment.yaml
│   │   ├── hpa.yaml
│   │   ├── ingress.yaml
│   │   ├── pv.yaml
│   │   ├── pvc.yaml
│   │   ├── secret.yaml
│   │   ├── service.yaml
│   │   └── serviceaccount.yaml
│   └── values.yaml
└── svcrole
    ├── Chart.yaml
    ├── templates
    │   ├── _helpers.tpl
    │   ├── clusterrole.yaml
    │   ├── rolebinding.yaml
    │   └── serviceaccount.yaml
    └── values.yaml

26 directories, 140 files

Service HELM Template

  • Structure on services repo
_infra/
   dev/
      helmfile.yaml
      values/
            api/values.yaml
            backend/values.yaml
            frontend/values.yaml
            svcrole/values.yaml

ECR Deployment

  • ECR Login

    aws ecr get-login-password --region [AWS_REGION] | docker login --username AWS --password-stdin [ERC_PATH]
    ---
    aws ecr get-login-password --region ap-southeast-1 | docker login --username AWS --password-stdin [AWS_ACCOUNT].dkr.ecr.ap-southeast-1.amazonaws.com
    
  • ECR Build

    docker build [DOCKERFILE_PATH] -t [DOCKER_IMAGE_NAME]:[TAG]
    ---
    docker build . -t zeroc0d3/laravel-kubernetes:latest
    docker build /home/ubuntu/Dockerfile -t zeroc0d3/laravel-kubernetes:latest
    
  • ECR Push

    docker tag [DOCKER_IMAGE_NAME]:[TAG] [ECR_PATH]/[DOCKER_IMAGE_NAME]:[TAG]
    docker push [ECR_PATH]/[DOCKER_IMAGE_NAME]:[TAG]
    ---
    docker tag devopscorner/laravel-kubernetes:latest [AWS_ACCOUNT].dkr.ecr.ap-southeast-1.amazonaws.com/devopscorner/laravel-kubernetes:latest
    docker push [AWS_ACCOUNT].dkr.ecr.ap-southeast-1.amazonaws.com/devopscorner/laravel-kubernetes:latest
    
  • ECR Pull

    docker pull [ECR_PATH]/[DOCKER_IMAGE_NAME]:[TAG]
    ---
    docker pull [AWS_ACCOUNT].dkr.ecr.ap-southeast-1.amazonaws.com/devopscorner/laravel-kubernetes:latest
    

Copyright

  • Author: DevOps Corner
  • License: Apache v2