How can I deploy multi wordpress in kubernetes? - mysql

Question

I try to deploy wordpress/mysql in kubernetes.
I want mysql and wordpress to use different volumes. I'm trying to write nfs for wordpress and hostpath for mysql.
But wordpress and mysql are not connected. I don't know why. I'd appreciate your help.
here's my code:
Mysql.yaml
apiVersion: v1
kind: Pod
metadata:
name: mysql
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql:5.7
ports:
- containerPort: 3306
protocol: TCP
env:
- name: MYSQL_ROOT_PASSWORD
value: qwer1234
volumeMounts:
- name: mysql-volume
mountPath: /var/lib/mysql
volumes:
- name: mysql-volume
persistentVolumeClaim:
claimName: mysql-pvc
---
apiVersion: v1
kind: Service
metadata:
name: mysql-svc
labels:
app: mysql
spec:
type: ClusterIP
selector:
app: mysql
ports:
- protocol: TCP
port: 3306
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mysql-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
volumeName: mysql-pv
​
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: mysql-pv
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: /vol/mysql
wordpress.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: wordpress
labels:
app: wordpress
spec:
replicas: 2
selector:
matchLabels:
app: wordpress
template:
metadata:
labels:
app: wordpress
spec:
containers:
- image: wordpress
name: wordpress
env:
- name: WORDPRESS_DB_HOST
value: mysql:3306
- name: WORDPRESS_DB_PASSWORD
value: P#ssw0rd
volumeMounts:
- mountPath: /nfs-volume/html
name: wordpress-pv
ports:
- protocol: TCP
containerPort: 80
volumes:
- name: wordpress-pv
persistentVolumeClaim:
claimName: wordpress-pvc
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: wordpress-pvc
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 5Gi
volumeName: wordpress-pv
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: wordpress-pv
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.201.11
path: /nfs-volume
---
apiVersion: v1
kind: Service
metadata:
name: wordpress-svc
labels:
app: wordpress
spec:
type: LoadBalancer
selector:
app: wordpress
ports:
- protocol: TCP
port: 80

Answer 1

you have provided the port number at last in environment variable
please try with out it
env:
- name: WORDPRESS_DB_HOST
value: mysql:3306
instead use this
env:
- name: WORDPRESS_DB_HOST
value: MySQL
you can check the example at : https://kubernetes.io/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/
if you read the documentation of Docker image they are also providing the host name without the port as value.
also in Wordpress environment you have to pass the MySQL password which you are passing wrong
- name: WORDPRESS_DB_PASSWORD
value: P#ssw0rd
instead it should be
- name: WORDPRESS_DB_PASSWORD
value: qwer1234