Layer7 API Gateway Patch Failure

Products

• CA API Gateway

Issue/Introduction

During the installation of the patch:

Layer7_API_PlatformUpdate_v11.1.00-Debian-17707

on a Layer7 API Gateway node (xxxxxx), the process fails during the operating system (Debian) upgrade phase.

We have identified that the issue may be related to package dependencies and would appreciate your confirmation.

The error occurs when executing the apt upgrade process (as seen in the daemon log), with the following result:

The following packages have unmet dependencies:
libunbound8 : Depends: libevent-2.1-7 (>= 2.1.8-stable) but it is not installed
E: Unmet dependencies.
ERROR : failed performing upgrade --without-new-pkgs, exiting...

Environment

11.0 ,11.1

Cause

The error libunbound8 : Depends: libevent-2.1-7 indicates a package dependency conflict occurring during the Debian 11 to 12 in-place upgrade managed by the PlatformUpdate patch. This typically happens if there are non-standard packages or if the system isn't at the required Debian 11 baseline.

Resolution

To resolve this, please perform the following:

Ensure your current Debian 11 system is updated to at least point release 11.8 and has the latest 11.0 Monthly Platform Patch applied before running the upgrade Upgrade Gateway 11.0.

Run the In-Place Upgrade Readiness Checker included in the upgrader zip file. It will identify specific package deviations that may need to be removed before the upgrade Upgrade Gateway 11.0.

If the system is currently in a "partially upgraded" state, we recommend reverting to your pre-upgrade snapshot and addressing the dependencies identified by the readiness checker before trying again Upgrade Environment Failing.