Build localstack on local k8s cluster

Localstack on local k8s cluster

1. Set up your Kubernetes cluster:

   • Install a Kubernetes cluster locally. Follow the respective documentation for installation instructions.

2. Deploy LocalStack to your Kubernetes cluster:

   • Create a Kubernetes deployment YAML file, for example, localstack-deployment.yaml with the following contents:

     apiVersion: apps/v1
     kind: Deployment
     metadata:
       name: localstack
     spec:
       replicas: 1
       selector:
         matchLabels:
           app: localstack
       template:
         metadata:
           labels:
             app: localstack
         spec:
           containers:
             - name: localstack
               image: localstack/localstack
               ports:
                 - containerPort: 4566
                 - containerPort: 4571
               env:
                 - name: SERVICES
                   value: "ec2,apigateway,lambda,s3,sns,dynamodb,route53,cloudwatch"

   • Apply the deployment to your Kubernetes cluster: kubectl apply -f localstack-deployment.yaml.

3. Expose LocalStack for access:

   • Create a Kubernetes service YAML file, for example, localstack-service.yaml with the following contents:

     apiVersion: v1
     kind: Service
     metadata:
       name: localstack-service
     spec:
       selector:
         app: localstack
       ports:
         - name: port-4566
           protocol: TCP
           port: 4566
           targetPort: 4566
         - name: port-4571
           protocol: TCP
           port: 4571
           targetPort: 4571
       type: NodePort

   • Apply the service to your Kubernetes cluster: kubectl apply -f localstack-service.yaml.

4. Access LocalStack services:

   • Find the NodePort assigned to the LocalStack service: kubectl get services.

   • Use the NodePort to access LocalStack services. For example, for S3, the endpoint would be http://<cluster-ip>:<node-port>/.

   • Test the S3 service with AWS CLI

     • Install AWS CLI on centos7

       sudo yum install awscli -y

     • Configure AK and SK (Using example AK and SK is good enough )

       [root@centos-0 ansible]# aws configure
       AWS Access Key ID [None]: EXAMPLEACCESSKEY
       AWS Secret Access Key [None]: EXAMPLEACCESSKEY
       Default region name [None]: 
       Default output format [None]: 

     • Create the s3 bucket

       [root@centos-0 ansible]# aws --endpoint-url=http://10.52.184.221:32661 s3api create-bucket --bucket test
       {
           "Location": "/test"
       }

     • List the s3 bucket

       [root@centos-0 ansible]# aws --endpoint-url=http://10.52.184.221:32661 s3api list-buckets
       {
           "Owner": {
               "DisplayName": "webfile", 
               "ID": "75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a"
           }, 
           "Buckets": [
               {
                   "CreationDate": "2023-12-10T15:22:27.000Z", 
                   "Name": "test"
               }
           ]
       }

5. Configure your applications to use LocalStack:

   • Update your application’s AWS SDK or AWS CLI configuration to point to the LocalStack endpoints. For example, set the endpoint for S3 to http://<cluster-ip>:<node-port>/ in your code or AWS CLI configuration.