garanet / k8s-php-pgsql-redis

A setup for a local env with PHP, PGSQL, and REDIS in K8s that could be used for day-to-day development

PHP + POSTGRESQL + REDIS in K8s

Challenge

This project shows how to create a setup for a local env with PHP, PGSQL, and REDIS in K8s that could be used for day-to-day development.

It is tested locally, but it can be used also for pipelines like the gitlab-ci, or using your own docker-registry or DigitalOcean / Heroku and tested in the cloud like Azure, AWS EKS...

Working with helm charts/kustomization/docker-compose and recently mostly with GitOps in AWS in an awesome infra with Flux+CrossPlane+SOPS+Traefik+Calico, I'll consider this project a basic project that shows a multi-approach to configure the KUBE environments. It is using the normal k8s base64 secrets, but can be configured also with secret-manager/rotation ect...

graph LR
A[Browser Requests] -- REVERSE PROXY --> B([PHP8-BACKEND]) 
B -- READ DATA--> C{PostgreSQL}
C --> D([PHP8-BACKEND])
D -- STORE DATA --> E{Redis}
E --> F([PHP8-FRONTEND])
F --> G[Browser Results]

In this project you'll find few:

• Elementary BASH scripting.
• Elementary PHP scripting.
• Elementary Docker knowledge.
• Elementary Kubectl knowledge.
• Elementary Linux knowledge.
• Elementary Redis/NOSQL knowledge.
• Elementary PGSQL knowledge.
• How to build a docker image.
• How to use ConfigMaps / Secrets / Replica / envs
• How to use the networks and the persistent volumes.

Files / Folders

WHERE	WHAT	WHY
/deploy.sh	To run with args start / stop'	Makes the pods and forward the APP port 8000 to localhost
/php/	Contains the docker build folder with the PHP code APP and the Kube manifests to deploy.	NGINX Proxy to serve PHP8-PFM
/postgresql/	Contains the Kube POSTGRESQL manifests to deploy.	Sample employees data to load
/redis/	Contains the Kube REDIS manifests to deploy.	Basic Redis with AUTH

Get ready!

The Kube project is composed of 3 components:

1. A PHP-FPM + NGINX as Deployment
2. A Postgres database as StateFulSet.
3. A Redis server as a caching server as Deployment.

The bash script ./deploy.sh will create the ENV to test it locally.

:~# chmod a+x deploy.sh
:~# ./deploy.sh start

• It builds a PHP8-FPM docker image named 'php' with the APP files, and the necessary libraries to run PostgreSQL and Redis (similar to a pipeline stage).

• Then the script will deploy the pods (deployments, configmaps, secrets, services)

• You can visit https://localhost:8000 from your browser the result.

Get down!

The bash script ./deploy.sh will shutdown the ENV.

:~# ./deploy.sh stop

Remove Docker images

:~# docker image prune -a