zun can not find images from glance

[Yang]

Hello, team:
    When I use zun to create container from glance, the container would run into error. I check the system log, it says: 'ZunException: Error occurred while writing image: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/zun/images'. In fact, I find this path does not exit at all.
    My ‘zun-compute’ service and the ‘glance’ service run on different hosts. And my openstack is installed step by step instead of using devstack. I don't know if these factors will cause this bug.
    I check the 'zun.conf', and I find that in 'glance' section, 'images_directory' is set to '$state_path/images', and 'state_path' is '/usr/local/lib/python2.7/dist-packages/zun'. I tried to change 'images_directory' to '/var/lib/images', but it still not work.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/554012

[hongbin (hongbin034)]

Hi @Yang,

It seems there is a permission issue. Suppose the user who run the 'zun-compute' process is called 'zun', ensure the 'zun' user has the right permission to access the image directory. If the 'images_directory' is not configured, the image directory is '$state_path/images'.

I added a step to the Zun's installation guide for the state path configuration https://review.openstack.org/#/c/554012/ . If you were following the Zun's installation guide, see if the extra configuration step help.

[Yang (sijie)]

Hi @hongbin,

Thanks to you. Your answer perfectly solved my problem.

And please add this step to Zun's installation guide, and hope it can help more people.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/554012
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=086c04b9202df8587370cab89331b903212079eb
Submitter: Zuul
Branch: master

commit 086c04b9202df8587370cab89331b903212079eb
Author: Hongbin Lu <email address hidden>
Date: Sat Mar 17 21:57:30 2018 +0000

    Add a step to configure state_path

    Change-Id: I1d17958ed80308e5c911c08c713461e1935cafd3
    Related-Bug: #1756514

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: stable/queens
Review: https://review.openstack.org/555315

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/555315
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=0ef54adbccda8fcceba055e8cec1b40b8f467659
Submitter: Zuul
Branch: stable/queens

commit 0ef54adbccda8fcceba055e8cec1b40b8f467659
Author: Hongbin Lu <email address hidden>
Date: Sat Mar 17 21:57:30 2018 +0000

    Add a step to configure state_path

    Change-Id: I1d17958ed80308e5c911c08c713461e1935cafd3
    Related-Bug: #1756514
    (cherry picked from commit 086c04b9202df8587370cab89331b903212079eb)