Restart glance-api gives import error boto3

[likui]

Restart glance-api gives import error boto3

error log:

2020-09-08 16:28:44.877 19 INFO glance.db.sqlalchemy.metadata [-] File /etc/glance/metadefs/operating-system.json loaded to database.
2020-09-08 16:28:45.066 19 INFO glance.db.sqlalchemy.metadata [-] File /etc/glance/metadefs/software-databases.json loaded to database.
2020-09-08 16:28:45.168 19 INFO glance.db.sqlalchemy.metadata [-] File /etc/glance/metadefs/software-runtimes.json loaded to database.
2020-09-08 16:28:45.254 19 INFO glance.db.sqlalchemy.metadata [-] File /etc/glance/metadefs/software-webservers.json loaded to database.
2020-09-08 16:28:45.283 19 INFO glance.db.sqlalchemy.metadata [-] File /etc/glance/metadefs/storage-volume-type.json loaded to database.
2020-09-08 16:28:45.284 19 INFO glance.db.sqlalchemy.metadata [-] Metadata loading finished
2020-09-08 16:28:53.122 7 INFO glance.async_ [-] Threadpool model set to 'EventletThreadPoolModel'
2020-09-08 16:28:54.136 7 WARNING keystonemiddleware.auth_token [-] AuthToken middleware is set with keystone_authtoken.service_token_roles_required set to False. This is backwards compatible
 but deprecated behaviour. Please set this to True.
2020-09-08 16:28:55.492 7 ERROR stevedore.extension [-] Could not load 'glance.store.s3.Store': No module named 'boto3': ModuleNotFoundError: No module named 'boto3'
2020-09-08 16:28:55.599 7 ERROR stevedore.extension [-] Could not load 's3': No module named 'boto3': ModuleNotFoundError: No module named 'boto3'

[OpenStack Infra (hudson-openstack)]

Change abandoned by likui (<email address hidden>) on branch: master
Review: https://review.opendev.org/750300

[Dmitriy Rabotyagov (noonedeadpunk)]

I think what happens here is that glance-store tries to load s3 store module when it's even not configured.
I was facing smth common with other service, when it failed to load module which was not even required. I guess it might be also related to oslo (but not sure)

[Abhishek Kekane (abhishek-kekane)]

Need additional information about this, how to configure s3 will be more useful.

[Cyril Roelandt (cyril-roelandt)]

This is fixed in https://review.opendev.org/c/openstack/glance_store/+/874534 (commit 7dc94f7a85e976a9c66f997f944c6ede06d7984a). We probably will not backport this.