kubernetes-hazelcast

Hazelcast prepared with discovery mechanism for Kubernetes

Build

1. Build project

mvn clean build

or

mvn clean istall

2. Build and push docker image

mvn clean package docker:build -DpushImage -DpushImageTags -DdockerImageTags=<VERSION>

Local development

Pre-requisites:

* [minikube](https://github.com/kubernetes/minikube)
* Maven
* Java 8

1. Run locally

./run.sh

Run on local Kubernetes (using minikube)

1. Deploy all

kubectl create -f devops

2. Access local cluster

minikube dashboard

3. Checking address of local service

minikube service k8s-java-sample --url

DevOps with Kubernetes

Service is prepared to be deployed in Kubernetes.

1. Deploy all

kubectl create -f devops

2. Access cluster

kubectl proxy

Then open dashboard in web-browser: http://localhost:8001/ui

3. Make new deployment (after changing image version in devops/deployment.yaml)

kubectl apply -f devops/deployment.yaml

Basic operations

1. Get pods

kubectl get pods

2. Get services

kubectl get services

3. Check logs of single pod

kubectl logs -f <pod_name>

If you have many containers in pod, name of container must be specified:

kubectl logs -f <pod_name> -c <container_name>

4. Deleting stuff

kubectl delete service|deployment|pod <name>

5. Rollout (provided that revisionHistoryLimit > 0 in devops/deployment.yaml)

kubectl rollout undo deployment/<name>

6. Scaling

kubectl scale --replicas=<number> deployment/<name>

7. Get basic info about your services

watch -n 1 kubectl get configmap,secrets,deployments,services,ingress,nodes,pods