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A Cloud Guru

Using Docker Secrets to Manage Sensitive Data

In order to secure a MySQL database, we’ve decided to redeploy the container it sits in as a Swarm service, using secrets. We'll use OpenSSL to generate secure passwords for both the MySQL users `root` and `user`. Then, we'll save them to separate files. Next, we'll create secrets for these passwords and finally create the MySQL service using these secrets.

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Path Info

Level

Advanced

Duration

1h 0m

Published

Apr 03, 2019

Challenge

Create Secrets

Note: Please allow the lab extra time to fully spin up.

Create the MySQL root password:

openssl rand -base64 20 > mysql_root_password.txt
docker secret create mysql_root_password mysql_root_password.txt

Create a MySQL user password:

openssl rand -base64 20 > mysql_password.txt
docker secret create mysql_password mysql_password.txt

Challenge

Create an Overlay Network for the Service
Create an overlay network:
```
docker network create -d overlay mysql_private
```

Challenge

Create the MySQL Service

Create a MySQL service:

docker service create 
     --name mysql_secrets 
     --replicas 1 
     --network mysql_private 
     --mount type=volume,destination=/var/lib/mysql 
     --secret mysql_root_password 
     --secret mysql_password 
     -e MYSQL_ROOT_PASSWORD_FILE="/run/secrets/mysql_root_password" 
     -e MYSQL_PASSWORD_FILE="/run/secrets/mysql_password" 
     -e MYSQL_USER="myUser" 
     -e MYSQL_DATABASE="myDB" 
     mysql:5.7

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!

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