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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.

Lab Info
Table of Contents
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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
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Challenge
Create an Overlay Network for the Service
Create an overlay network:
docker network create -d overlay mysql_private
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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
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