action #157528
Updated by okurz about 2 months ago
## Motivation
Our current hypothesis is that the PPC HMC struggles with two simultaneous connections to the ASM at the same time. It causes the managed system to "flicker" in the webui and constantly abort any operation you execute. We should explore if these connection issues can be resolved by only having one, single connection between ASM<->HMC.
Machines where this happens:
* soapberry
* blackcurrant
## Acceptance criteria
* **AC1:** https://powerhmc1.oqa.prg2.suse.org/ shows no flickering anymore for machines going between "No connection" and "operating"
* **AC2:** racktables is up-to-date
## Suggestions
* Research upstream what IBM suggests. We assume it's not foreseen that one connects more than one physical network connection to the same HMC
* Create an infra ticket according to https://progress.opensuse.org/projects/qa/wiki/Tools#SUSE-IT-ticket-handling asking to remove the secondary, redundant network connection. At best physically remove and update racktables, not in switch config so that not somebody else some months later tries to "fix" a disabled switch port
* Ensure that machines are still controllable over HMC after cable removal
* Ensure that racktables is up-to-date with the remaining connection