Wordpress and MySQL: Error establishing a database connection

General Discussions
1

Hi, I am trying to launch a demo application with Kubernetes, and I follow this Example: Deploying WordPress and MySQL with Persistent Volumes - Kubernetes

I used kubeadm, create a cluster with 1 master and 1 worker. I changed the service type to NodePort, create PV. Everything is running now but I can not access the service because " Error establishing a database connection"

This is my YML files:

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Thanks for your supporting

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2

I have the same error, please support me fix it

3

I think the connect from the Wordpress to MySQL have error, I try to connect but it still cannot connect.