[devstack] keystone service fails to start after reboot

[Tao Li]

Enviroment
OS: CentOS7.2

I deployed the devstack environment successfully in CentOS system. After rebooting the CentOS system， the keystone service could not be started. The uwsgi raised exception as follows.

Apr 23 22:38:53 devstack.localdomain systemd[1]: <email address hidden> failed.
Apr 23 22:42:46 devstack.localdomain systemd[1]: Starting Devstack <email address hidden>...
Apr 23 22:42:46 devstack.localdomain <email address hidden>[7242]: [uWSGI] getting INI configuration from /etc/keystone/keystone-uwsgi-public.ini
Apr 23 22:42:46 devstack.localdomain <email address hidden>[7242]: open("./python_plugin.so"): No such file or directory [core/utils.c line 3686]
Apr 23 22:42:46 devstack.localdomain <email address hidden>[7242]: !!! UNABLE to load uWSGI plugin: ./python_plugin.so: cannot open shared object file: No such file or directory !!!
Apr 23 22:42:46 devstack.localdomain <email address hidden>[7242]: *** Starting uWSGI 2.0.15 (64bit) on [Sun Apr 23 22:42:46 2017] ***
Apr 23 22:42:46 devstack.localdomain systemd[1]: <email address hidden>: main process exited, code=exited, status=1/FAILURE
Apr 23 22:42:46 devstack.localdomain systemd[1]: Failed to start Devstack <email address hidden>.
Apr 23 22:42:46 devstack.localdomain systemd[1]: Unit <email address hidden> entered failed state.
Apr 23 22:42:46 devstack.localdomain systemd[1]: <email address hidden> failed.

So i think this is a bug. I tried to create the /var/run/uwsgi directory and chown it stack user. Then it works.
sudo mkdir -p /var/run/uwsgi
sudo chown stack:stack uwsgi

So what do you think that?

[Kirill Zaitsev (kzaitsev)]

The correct way to do it would be to add a tmpfiles.d config file, that would create the directory at startup. also it's not about keystone, but about devstack

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/468457

[Lance Bragstad (lbragstad)]

I agree with comment #2. It would appear that this is something we should be doing in devstack and unrelated to the keystone service.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/468457
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=d0db62a476e29355ca08db0237295139c8fce4f6
Submitter: Jenkins
Branch: master

commit d0db62a476e29355ca08db0237295139c8fce4f6
Author: Kirill Zaitsev <email address hidden>
Date: Fri May 26 19:02:52 2017 +0300

    Use systemd-tmpfiles to create /var/run/uwsgi

    On ubuntu contents of /var/run do not persist between reboots. Devstack
    uses /var/run/uwsgi as home for wsgi sockets. This means that after
    rebooting the machine services, that rely on uwsgi would fail to start.
    Currently it affects keystone.service and placement-api.service.
    This patch changes delegates directory creation to systemd-tmpfiles,
    which would run on startup.

    Change-Id: I27d168cea93698739ef08ac76c828695a49176c7
    Closes-Bug: #1692767