nova : Discovering nova hosts fails

[zhangfei gao]

When deploying kolla on arm64, nova reports this error.

TASK [nova : Discovering nova hosts] *******************************************************************************************************************************************************
fatal: [localhost -> localhost]: FAILED! => {"changed": false, "cmd": ["docker", "exec", "nova_api", "nova-manage", "cell_v2", "discover_hosts"], "delta": "0:00:01.857045", "end": "2017-08-08 05:59:55.538689", "failed": true, "msg": "non-zero return code", "rc": 137, "start": "2017-08-08 05:59:53.681644", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}

After revert this patch, the deploy succeed.

commit c18615efd54d57f89d1a81729099285ea1fca3a7
Author: Sam Yaple <email address hidden>
Date: Fri Jul 28 12:43:34 2017 -0400

    Remove priviledged mode for nova-api

    This only existed to add an iptables rule for nova-net related things.

    Change-Id: I4e6c50d0908edde3b3cc68382f4466a828f377a5
    Related-Bug: #1687187

Based on Aug 7 origin/master branch.

[zhangfei gao (zhangfei-gao)]

kolla-slack mentioned the issue has been fixed by
https://review.openstack.org/#/c/480765/
"the error is fixed in master and work for rpm distros, ubuntu has not packaged the change in nova code base yet"

Though I am not sure how to verify,
If directly modify code in contianer nova_compute, no use
If directly modify code in contianer nova_api, nova_api restart.

Suppose it is already been solved, pls ignore this report.

[zhangfei gao (zhangfei-gao)]

The issue disappears when using latest nova_api, build from source code.