Comment 26 for bug 2033894

Reviewed: https://review.opendev.org/c/openstack/octavia/+/898102
Committed: https://opendev.org/openstack/octavia/commit/68cb6e38800d03746236d0ed3e910658afe54323
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit 68cb6e38800d03746236d0ed3e910658afe54323
Author: Gregory Thiemonge <email address hidden>
Date: Fri Sep 1 09:08:37 2023 -0400

    Reduce duration of failovers with amphora in ERROR

    In the failover flow, there are multiple tasks for the configuration of
    VRRP for the other amphorae of the load balancer, but during outage the
    other amps may not be available. To prevent the tasks from attempting
    connections to unreachable amphorae, we can detect in the first task
    that an amp is unreachable and pass this information to the other tasks.

    Those connection attempts could have taken a lot of time, between 15 min
    and 40 min depending on the configuration of Octavia and the provider
    driver (amphorav1 or amphorav2)

    Closes-Bug: #2033894

    Note: stable/2023.1 and older, the patch also includes modifications in
          octavia/controller/worker/v1/

    Conflicts:
            octavia/controller/worker/v2/tasks/amphora_driver_tasks.py

    Change-Id: Ib33a0b8d2875e4ff97c65933fe9360bb06994d32
    (cherry picked from commit ca70587f0bcb4b2a05bd5c243f111140a5762114)
    (cherry picked from commit 6fdc2079da3392fdfbdf4a80df05bfe7d149ca95)
    (cherry picked from commit 97b1b8387e42f8361b612a0b81b1c60b6e14db37)
    (cherry picked from commit dd849b4c5c1a1d33e4fd4a9afa2f35903d4d9aac)