Trying to connect to Rabbit servers can timeout if only /etc/hosts entries are used

[Daniel Alvarez]

When connecting to Rabbit endpoints through hostnames in /etc/hosts, py-amqp will try to go through the nameservers if only the IPv4 entry is present.

In those cases where compute nodes don't have any nameservers configured or those are unreachable for some reason, the initial connection to rabbit may take 60 seconds.

This patch [0] fixes it and it's present in py-amqp>=2.3.0.

[0] https://github.com/celery/py-amqp/commit/1ad97fb14c0c3c57395ca525932f95a830e51a88

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/581744

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/581744
Committed: https://git.openstack.org/cgit/openstack/oslo.messaging/commit/?id=7dc76843114b21d280c27bab9d7776d7f37e3569
Submitter: Zuul
Branch: master

commit 7dc76843114b21d280c27bab9d7776d7f37e3569
Author: Daniel Alvarez <email address hidden>
Date: Wed Jul 11 15:21:56 2018 +0200

    Bump py-amqp to >= 2.3.0

    Due to the bug below we want to have py-amqp>=2.3.0 so that connecting
    to rabbit endpoints don't timeout when relying on /etc/hosts entries.
    Closes-Bug: 1780992

    Change-Id: Ia2c1114cb0f8d480695197714f7c6293751430dd

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/oslo.messaging 8.1.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/requirements queens-eol release.