Disabling undercloud upgrade in the containers job did help the job get further, so the bug is indeed somewhere in the undercloud upgrade procedure:
http://logs.openstack.org/84/450784/18/experimental/gate-tripleo-ci-centos-7-containers-multinode-upgrades-nv/ea4b0ed/logs/undercloud/home/jenkins/overcloud_upgrade_console.log.txt.gz#_2017-04-21_11_04_33
Disabling undercloud upgrade in the containers job did help the job get further, so the bug is indeed somewhere in the undercloud upgrade procedure:
http:// logs.openstack. org/84/ 450784/ 18/experimental /gate-tripleo- ci-centos- 7-containers- multinode- upgrades- nv/ea4b0ed/ logs/undercloud /home/jenkins/ overcloud_ upgrade_ console. log.txt. gz#_2017- 04-21_11_ 04_33