Charmed MySQL K8s

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juju deploy mysql-k8s --channel 8.0/stable
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Manage Passwords

This is part of the Charmed MySQL Tutorial. Please refer to this page for more information and the overview of the content.

Passwords

When we accessed MySQL earlier in this tutorial, we needed to use a password manually. Passwords help to secure our database and are essential for security. Over time it is a good practice to change the password frequently. Here we will go through setting and changing the password for the admin user.

Retrieve the root password

As previously mentioned, the root password can be retrieved by running the get-password action on the Charmed MySQL K8s application:

juju run-action mysql-k8s/leader get-password --wait

Running the command should output:

unit-mysql-k8s-0:
  UnitId: mysql-k8s/0
  id: "6"
  results:
    password: sQI3Ojih7uL5UC4J1D9Xuqgx
    username: root
  status: completed
  timing:
    completed: 2023-02-15 21:51:04 +0000 UTC
    enqueued: 2023-02-15 21:50:59 +0000 UTC
    started: 2023-02-15 21:51:04 +0000 UTC

Rotate the root password

You can change the root password to a new random password by entering:

juju run-action mysql-k8s/leader set-password --wait

Running the command should output:

unit-mysql-k8s-0:
  UnitId: mysql-k8s/0
  id: "10"
  results: {}
  status: completed
  timing:
    completed: 2023-02-15 21:51:37 +0000 UTC
    enqueued: 2023-02-15 21:51:34 +0000 UTC
    started: 2023-02-15 21:51:37 +0000 UTC

Please notice the status: completed above which means the password has been successfully updated. To be sure, please call get-password once again:

juju run-action mysql-k8s/leader get-password --wait

Running the command should output:

unit-mysql-k8s-0:
  UnitId: mysql-k8s/0
  id: "12"
  results:
    password: sN6bcP1j7xRfhw4ZDblcIYK1
    username: root
  status: completed
  timing:
    completed: 2023-02-15 21:52:13 +0000 UTC
    enqueued: 2023-02-15 21:52:11 +0000 UTC
    started: 2023-02-15 21:52:12 +0000 UTC

The root password should be different from the previous password.

Set the root password

You can change the root password to a specific password by entering:

juju run-action mysql-k8s/leader set-password password=my-password --wait && \
juju run-action mysql-k8s/leader get-password --wait

Running the command should output:

unit-mysql-k8s-0:
  UnitId: mysql-k8s/0
  id: "16"
  results: {}
  status: completed
  timing:
    completed: 2023-02-15 21:52:47 +0000 UTC
    enqueued: 2023-02-15 21:52:45 +0000 UTC
    started: 2023-02-15 21:52:46 +0000 UTC
unit-mysql-k8s-0:
  UnitId: mysql-k8s/0
  id: "18"
  results:
    password: my-password
    username: root
  status: completed
  timing:
    completed: 2023-02-15 21:52:48 +0000 UTC
    enqueued: 2023-02-15 21:52:47 +0000 UTC
    started: 2023-02-15 21:52:47 +0000 UTC

The root password should match whatever you passed in when you entered the command.


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