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Do you want a simple single server kubernetes that is easy to install? Here is the guide for you. Installing kubernetes First, we install k3s kuberntes using the next command: curl -sfL https://get.k3s.io | sh -s - --cluster-init --node-external-ip <external-ip> Note: Replace external-ip with your server external IP. This is needed in order to get the traefik ingress controller working. Next we should copy the k3s kubernetes configuration file /etc/rancher/k3s/k3s.yaml to the default location ~/....

In out last article here , we explained how to send Docker and application logs to ELK. Now is the time to add some observability to our app using Elastic APM. Configure Elastic APM First, we add Elastic APM to our Docker Compose file from last time, using the same version as Elastic Search. apm-server: image: docker.elastic.co/apm/apm-server:7.17.24 container_name: apm-server user: apm-server ports: - "8200:8200" volumes: - ./apm-server.docker.yml:/usr/share/apm-server/apm-server.yml:ro command: > --strict.perms=false -e -E output....

Are you struggling with a frontend application that wants to use a backend AWS Lambda API ? Do you have the next CORS problem: Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response The solution is simple: implement HTTP OPTIONS method respond with the next access control headers : Access-Control-Allow-Origin, Access-Control-Allow-Headers, Access-Control-Allow-Methods For example in python you can do something like this: def return_200(): return { 'statusCode': 200, 'headers': { 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Methods': 'GET,HEAD,OPTIONS,POST,PUT', 'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization', 'Content-Type': 'application/json' }, 'body': json....

Let’s deploy a docker image to AWS ECR and further to AWS Fargate. If you don’t have docker installed, now is the time to do it. GitHub Action YML: Create a workflow named main-aws.yml, for example as: name: Deploy to Amazon ECS on: workflow_dispatch: env: AWS_REGION: eu-central-1 # set this to your preferred AWS region, e.g. us-west-1 ECS_SERVICE: test-svc # set this to your Amazon ECS service name ECS_CLUSTER: test-fargate-dev # set this to your Amazon ECS cluster name ECS_TASK_DEFINITION: ....

Let’s install and configure PgHero and PgAdmin4 in docker to connect to the databases deloyed in the previous post. If you don’t have docker installed, now is the time to do it. PgHero: Create the config for PgHero pghero.yml : databases: database1: url: postgres://dummy:123456@10.0.0.3:5432/postgres database2: url: postgres://dummy:123456@10.0.0.4:5432/postgres And run the docker command to start it: docker run -it -d -v $(pwd)/pghero.yml:/app/config/pghero.yml -p 8080:8080 ankane/pghero If everything is ok, you should see:...