Kubernetes Nginx PHP-FPM App

In this blog, we will deploy a PHP application on a Kubernetes cluster with Nginx and PHP-FPM running in separate containers.

We want the web-server Nginx and PHP-FPM to be co-located in separate pods.

PHP-FPM

PHP-FPM is an implementation of Fast-CGI for PHP with improved capabilities around process management, logging, and high traffic situations.

Nginx

Nginx is a web server and reverse proxy that’s widely used for high-traffic applications. When run in combination with PHP-FPM, Nginx is configured to send requests for .php routes to PHP-FPM to serve the page.

We should upload the application files first, to all worker nodes to the directory /var/website as /var/website is the volume path to the containers.

nginx-deployment.yml

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
labels:
app: nginx
layer: frontend
spec:

replicas: 6
selector:
matchLabels:
app: nginx
template:


metadata:
labels:
app: nginx

spec:

containers:

- name: nginx
image: nginx:alpine
ports:
- containerPort: 80
volumeMounts:

- mountPath: /var/www/html/
name: contents

- name: nginx-config
mountPath: /etc/nginx/conf.d/default.conf
subPath: nginx.conf

volumes:
- name: contents
hostPath:
path: /var/website
type: Directory

- name: nginx-config
configMap:
name: nginx

nginx-nodeport.yml

---
kind: Service
apiVersion: v1
metadata:
name: nginx
labels:
app: nginx
layer: frontend

spec:

type: NodePort
selector:

app: nginx

ports:

- nodePort: 30000
port: 80
targetPort: 80

nginx.conf

server {
listen 80;
listen [::]:80;
access_log off;
root /var/www/html;
index index.php;
server_name example.com;
server_tokens off;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ /index.php?$args;
}
# pass the PHP scripts to FastCGI server listening on wordpress:9000
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;

# Change The Service Name
fastcgi_pass phpfpm:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
}
}

phpfpm-deployment.yml

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: phpfpm
labels:
app: phpfpm
layer: backend
spec:

replicas: 6
selector:
matchLabels:
app: phpfpm
template:


metadata:
labels:
app: phpfpm

spec:

containers:

- name: phpfpm
image: php:fpm-alpine
ports:
- containerPort: 9000
volumeMounts:
- mountPath: /var/www/html/
name: contents

volumes:
- name: contents
hostPath:
path: /var/website
type: Directory

phpfpm-clusterip.yml

---
kind: Service
apiVersion: v1
metadata:
name: phpfpm
labels:
app: phpfpm
layer: backend

spec:

type: ClusterIP
selector:

app: phpfpm

ports:

- port: 9000
targetPort: 9000

Results:

We will get the below results once we run the above deployments.

Author

Created by @sebinxavi — feel free to contact me and advise as necessary!

Source code available at https://github.com.

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