Lab
A Cloud Guru

Minikube: Persistent Storage

In this hands-on lab, we will be dynamically creating storage and using it with our application. This is useful when the data that an application (e.g. a database) requires does not need to be pre-staged, or it is inserted via the application.

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Path Info

Level

Beginner

Duration

30m

Published

Nov 26, 2019

Challenge

Start Minikube Using the Correct Driver
Run the command:
```
sudo minikube start --vm-driver none
```
Challenge

Create the Persistent Volume Claim Taking Note of the Claim Name
Make sure that the name of the claim matches the claimName in the pod file:
```
cd ~/dynamic
cat ./mysql-volume.yaml
```
While still in the dynamic directory Create the volume:
```
sudo kubectl apply -f  ./mysql-volume.yaml
```
Challenge

Create the MySQL Container
Verify that the volume target name in the mysql-pod.yaml matches the claim name from the previous step
```
cd ~/dynamic
cat ./mysql-pod.yaml
```
Run the command:
```
sudo kubectl apply -f ~/dynamic/mysql-pod.yaml
```
Ensure the container is started (it might take a couple of minutes to show (READY):
```
sudo kubectl get po
```
We'll need the IP of the container, so let's run that same command, but with an extra option:
```
sudo kubectl get po -o wide
```
Make a note of that IP, because we'll need it in a minute.
Challenge

Install the MySQL Client and Connect to the Service Using the root Password for MySQL
This will install the latest version of the database client:
```
sudo apt install -y mysql-client
```
Before we can log into the database though, we'll need the root password. Look for it in the pod YAML using this:
```
cat ~/dynamic/mysql-pod.yaml
```
Look beneath the line that says MYSQL_ROOT_PASSWORD.

Now, with that password and the IP from a minute ago, let's log in:
```
mysql -h <IP_ADDRESS> -u root -p<MYSQL_ROOT_PASSWORD>
```
Challenge

Create a Database Once Logged into MySQL
From the mysql command prompt get a list of the default databases:
```
show databases;
```
Create a new database, to ensure things are working correctly:
```
create database example;
```
Show the databases again to see if our new one is there:
```
show databases;
```
Now exit MySQL:
```
exit
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.