Comment 1 for bug 1802880

Here is the passed log: http://logs.rdoproject.org/openstack-periodic/git.openstack.org/openstack-infra/tripleo-ci/master/periodic-tripleo-centos-7-master-containers-build/a5e3452/logs/undercloud/home/zuul/undercloud_install.log.txt.gz
 in this one:
/lib/docker-config-scripts/nova_api_discover_hosts.sh:/nova_api_discover_hosts.sh:ro docker.io/tripleomaster/centos-binary-nova-api:3ed8ac0e93367a02ad53d9fa93467057724b6621_fd8eb74b /usr/bin/bootstrap_host_exec nova_api /nova_api_discover_hosts.sh",
2018-11-05 15:21:15 | "(cellv2) Running cell_v2 host discovery",
2018-11-05 15:21:15 | "(cellv2) Waiting 600 seconds for hosts to register",
2018-11-05 15:21:15 | "(cellv2) compute node upstream-centos-7-rdo-cloud-tripleo-0000285905.localdomain has registered",
2018-11-05 15:21:15 | "(cellv2) All nodes registered",
2018-11-05 15:21:15 | "(cellv2) Running host discovery...",
2018-11-05 15:21:15 | "Found 2 cell mappings.",
2018-11-05 15:21:15 | "Skipping cell0 since it does not contain hosts.",
2018-11-05 15:21:15 | "Getting computes from cell 'default': 11cb9d41-89f4-41d2-a4c6-7260c026fe7f",
2018-11-05 15:21:15 | "Creating host mapping for service upstream-centos-7-rdo-cloud-tripleo-0000285905.localdomain",
2018-11-05 15:21:15 | "Found 1 unmapped computes in cell: 11cb9d41-89f4-41d2-a4c6-7260c026fe7f",

And in the timedout one:
http://logs.rdoproject.org/openstack-periodic/git.openstack.org/openstack-infra/tripleo-ci/master/periodic-tripleo-centos-7-master-containers-build/72fe1a4/logs/undercloud/home/zuul/undercloud_install.log.txt.gz

/lib/docker-config-scripts/nova_api_discover_hosts.sh:/nova_api_discover_hosts.sh:ro 192.168.24.1:8787/tripleomaster/centos-binary-nova-api:tripleo-ci-testing-updated-20181107225415 /usr/bin/bootstrap_host_exec nova_api /nova_api_discover_hosts.sh",
2018-11-07 23:34:45 | "(cellv2) Running cell_v2 host discovery",
2018-11-07 23:34:45 | "(cellv2) Waiting 600 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) compute node upstream-centos-7-rdo-cloud-tripleo-0000290997.localdomain has not registered",
2018-11-07 23:34:45 | "(cellv2) Waiting 593 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 557 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 520 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 488 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 451 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 419 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 387 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 354 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 322 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 290 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 257 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 225 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 193 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 160 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 128 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 96 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 64 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) Waiting 31 seconds for hosts to register",
2018-11-07 23:34:45 | "(cellv2) WARNING: timeout waiting for nodes to register, running host discovery regardless",
2018-11-07 23:34:45 | "(cellv2) Expected host list: upstream-centos-7-rdo-cloud-tripleo-0000290997.localdomain",
2018-11-07 23:34:45 | "(cellv2) Detected host list:",
2018-11-07 23:34:45 | "(cellv2) Running host discovery...",
2018-11-07 23:34:45 | "Found 2 cell mappings.",
2018-11-07 23:34:45 | "Skipping cell0 since it does not contain hosts.",
2018-11-07 23:34:45 | "Getting computes from cell 'default': 2c832f95-05db-4565-92b5-3b2b5c1f6c55",
2018-11-07 23:34:45 | "Found 0 unmapped computes in cell: 2c832f95-05db-4565-92b5-3b2b5c1f6c55",

Something wrong is happening while registering nodes.