Unable to update Grafana on a Plesk for Ubuntu server: repository 'https://autoinstall.plesk.com/grafana/deb stable InRelease' doesn't support architecture 'i386'

Symptoms

• Update of Grafana fails:

  # apt-get update
  ...
  Reading package lists... Done
  N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://autoinstall.plesk.com/grafana/deb stable InRelease' doesn't support architecture 'i386'

• The following Grafana repository is configured:

  # cat /etc/apt/sources.list.d/plesk-ext-grafana.list
  deb https://autoinstall.plesk.com/grafana/deb stable main

Cause

This is a Plesk bug with ID PPPM-13366.

Resolution

Until the bug is fixed, apply the workaround: 

1. Connect to your Plesk server via SSH.

2. Find the current Plesk version:

   # plesk version

3. Open the repository file in a text editor. In this example, we are using the vi editor:

   # vi /etc/apt/sources.list.d/plesk-ext-grafana.list

4. Change the repository:

   CONFIG_TEXT: deb https://packages.grafana.com/oss/deb stable main

5. Save the changes and close the file.

6. Install the public key:

   # wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -

7. Update Grafana:

   # apt-get update