MySQL
This guide will walk you through the steps to integrate MySQL into your existing Helm chart for your Kubernetes application. By adding MySQL, you can leverage its capabilities for relational database management. We will use the Bitnami MySQL Helm chart as a dependency and configure it accordingly.
Prerequisites
- Helm installed and configured
- Kubernetes cluster up and running
- Existing Helm chart for your application
Steps to Integrate MySQL
1. Add MySQL Helm Repository
First, add the Bitnami repository, which hosts the MySQL Helm chart,
2. Update Chart.yaml
Open your existing Helm chart directory and edit the Chart.yaml file to add MySQL as a dependency,
3. Update values.yaml
Create or update the values.yaml
file to include configuration values for MySQL. Customize the values as per your
requirements.
Over-provisioning on disk size (primary.persistence.size
) isn’t a bad idea considering that disks are cheap in any
cloud. It is also slightly trickier to increase volume sizes at later point in time due to some Kubernetes
limitations. So we recommend you pick a good number here from the start.
4. Install/Update Dependencies
Navigate to your Helm chart directory and run the following command to update dependencies,
This command will download the MySQL chart and add it to your charts/
directory.
- Update Your Application Deployment
Modify your application’s deployment files to include the MySQL service. Ensure your application can connect to MySQL using the service name and credentials specified in the values.yaml file.
For example, if using a ConfigMap to store environment variables for your application, you might update it like this,
6. Deploy Your Application
Finally, deploy or upgrade your application using Helm,
7. Verify Deployment
Check the status of your Helm release to ensure everything is running correctly,
Also, verify that the MySQL pod is running,
You should see a pod for MySQL, something like your-app-mysql-0
.
Congratulations! You have successfully added MySQL to your existing Helm chart. 🚀
This integration allows your application to use MySQL for relational database management, managed efficiently with Helm.
Customize the MySQL configuration further by modifying the values.yaml
file as needed.
For more detailed configurations and advanced settings, refer to the Bitnami MySQL Helm chart documentation.