https://github.com/akankshakumari393/sync-env

kubernetes controller that sync configMap with Deployment in the default namespace
https://github.com/akankshakumari393/sync-env

dockerfile golang kubernetes

Last synced: about 2 months ago
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kubernetes controller that sync configMap with Deployment in the default namespace

• Host: GitHub
• URL: https://github.com/akankshakumari393/sync-env
• Owner: akankshakumari393
• Created: 2022-04-30T06:03:47.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-10-01T15:42:00.000Z (over 2 years ago)
• Last Synced: 2024-06-19T13:51:48.288Z (7 months ago)
• Topics: dockerfile, golang, kubernetes
• Language: Go
• Homepage:
• Size: 42 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# sync-env

## Kubernetes Custom Controller

This controller updates a deployment env with ConfigMap reference whenever the configMap is created in the `default` namespace.  

## On Local Environment

### build the binary

```

go build

```

### Execute the binary

```

./sync-env

```

## On K8S Cluster

### Build the controller image and push to docker registry 

```

docker build -t akankshakumari393/sync-env:0.0.1 .

docker push akankshakumari393/sync-env:0.0.1

```

### create a namespace in which controller would run

```

kubectl create namespace sync-env

```

### Create Role in default namespace to give permission for configmaps, deployments 

```

kubectl create role default-role --verb=update,get,list,watch --resource=deployments,configmaps

# kubectl create -f k8s-resources/role.yaml

```

### Create RoleBindings in default namespace to give access to Service account mapped with controller 

```

kubectl create rolebinding default-role-binding --role=default-role --user=system:serviceaccount:sync-env:default

# kubectl create -f k8s-resources/rolebinding.yaml

```

Create deployment

kubectl create -f k8s-resources/deployment.yaml -n sync-env

### Now any configmap added to default namespace would be added to env of the deployment