** Description changed:

  Controller swact fails due to etcd service failure on controller-1. Swact 
reverts back to controller-0 with alarm 400.001 "controller-services failure; 
etcd(disabled, )" on controller-1.
  Event time: 2026-06-30T09:00:55 UTC
  Active controller: controller-0 (remained active after failed swact)
+ 
+ Severity
+ Critical: System/Feature is not usable after the defect — controller swact is 
completely non-functional, system has no high-availability failover capability.
+ Steps to Reproduce
+ 1. Install StarlingX 26.10 formal build on yow2-wrcp-dx-203 (2-controller DX 
with lowlatency)
+ 2. Ensure both controllers are unlocked/enabled/available
+ 3. Source platform credentials: `source /etc/platform/openrc`
+ 4. Initiate swact: `system host-swact controller-0`
+ 5. Monitor with: `system host-show controller-0` and `fm alarm-list`
+ Expected Behavior
+ 
+ Swact completes successfully
+ controller-1 becomes the active controller
+ All service groups become active on controller-1
+ controller-0 transitions to standby
+ Actual Behavior
+ Swact initiates (task shows "Swacting" then "Swact: In-Progress")
+ etcd fails to start on controller-1
+ Alarm 400.001 raised: "Service group controller-services failure; 
etcd(disabled, )" on controller-1
+ Multiple service groups lose redundancy (400.002 alarms for 
controller-services, vim-services, oam-services, cloud-services)
+ kube-apiserver becomes unreachable for 90+ seconds during the attempt
+ Swact reverts — controller-0 returns to Controller-Active role
+ task-affine-functions exceeds 90-second watch timeout
+ Alarms persist after revert (etcd remains disabled on controller-1)
+ Reproducibility
+ Reproducible — failed on 3 consecutive swact attempts:
+ 2026-06-29T15:14 UTC
+ 2026-06-30T09:00 UTC
+ Previous attempt on 2026-06-29 (informal build, same behavior)

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https://bugs.launchpad.net/bugs/2158947

Title:
  Swact fails due to etcd service failure on controller-1

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