Hostname not Set from /mnt/persist upon First Boot after Installation

Issue

The hostname configured in /mnt/persist/etc/hostname does not apply when switching slots for the first time after installing Cumulus Linux. The configured hostname does not apply until the second boot.

Environment

• Cumulus Linux 2.2.0

Resolution

This issue has been escalated to a bug (CM-3592) and is targeted for resolution in Cumulus Linux 2.2.1. Click the Follow button on this article to receive updates as the fix moves towards release.

Workaround

Use zero-touch provisioning to set the system hostname on the first boot.