https://github.com/piomin/sample-spring-bluegreen-with-db

Demo applications and Kubernetes manifests for illustrating blue-green deployment strategy with database schema changes using tools like Liquibase and Istio
https://github.com/piomin/sample-spring-bluegreen-with-db

bluegreen-deployment database-migrations istio jpa kubernetes liquibase liveness readiness spring-boot

Last synced: 4 months ago
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Demo applications and Kubernetes manifests for illustrating blue-green deployment strategy with database schema changes using tools like Liquibase and Istio

• Host: GitHub
• URL: https://github.com/piomin/sample-spring-bluegreen-with-db
• Owner: piomin
• Created: 2021-02-18T11:11:51.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2024-10-24T16:53:08.000Z (4 months ago)
• Last Synced: 2024-10-26T00:01:30.539Z (4 months ago)
• Topics: bluegreen-deployment, database-migrations, istio, jpa, kubernetes, liquibase, liveness, readiness, spring-boot
• Language: Java
• Homepage: https://piotrminkowski.com/
• Size: 54.7 KB
• Stars: 18
• Watchers: 2
• Forks: 11
• Open Issues: 1
• Metadata Files:
  • Readme: readme.md

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README

        
## Blue-green deployment with a database on Kubernetes  [![Twitter](https://img.shields.io/twitter/follow/piotr_minkowski.svg?style=social&logo=twitter&label=Follow%20Me)](https://twitter.com/piotr_minkowski)

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Detailed description can be found here: [Blue-green deployment with a database on Kubernetes](https://piotrminkowski.com/2021/02/18/blue-green-deployment-with-a-database-on-kubernetes/)

## Quick Start using Minikube

> For Windows, all minikube and kubectl commands should be run in an Administrator CMD shell.

### Install and start minikube

`minikube start`

Start the minikube dashboard

`minikube dashboard`

> Consider doing this in another shell as it 

#### Install Istio on the host machine and install in Minikube

Installation instructions for Istio are [here.]((https://istio.io/latest/docs/setup/install/istioctl/))

`istioctl install`

### Install Postgres in Minikube

`kubectl create -f postgresql-deployment.yaml `

### Create a Liquibase container with environment information

> See the Dockerfile for more details

`docker build -t liquibase/bg-k8s-liquibase .`

`docker push liquibase/bg-k8s-liquibase`

> You will want to change this to match your Docker Hub username.

### Create Liquibase Config Maps and Jobs

> The config map is the Liquibase changelog.

`kubectl create -f liquibase-cm-v1.yaml`

> The Job runs liquibase with the config map.

`kubectl create -f liquibase-job-v1.yaml`

> Repeat for Version 2

`kubectl create -f liquibase-cm-v2.yaml`

`kubectl create -f liquibase-job-v2.yaml`