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when _determine_version_cap raises DBNotAllowed\n\nChange Icddbe4760eaff30e4e13c1e8d3d5d3f489dac3c4 was intended for the\nAPI service to check all cells for the minimum nova-compute service\nversion when [upgrade_levels]/compute\u003dauto.\n\nThat worked in the gate with devstack because we don\u0027t configure\nnova-compute with access to the database and run nova-compute with\na separate nova-cpu.conf so even if nova-compute is on the same\nhost as the nova-api service, they aren\u0027t using the same config\nfile (nova-api runs with nova.conf which has access to the API DB\nobviously).\n\nThe problem is when nova-compute is configured with\n[upgrade_levels]/compute\u003dauto and an [api_database]/connection,\nthere are flows that can try to hit the API database directly\nbecause of the _determine_version_cap method. For example, the\n_sync_power_states periodic task trying to stop an instance,\nor even simple inter-compute communication over RPC like during\na resize.\n\nThis change simply catches the DBNotAllowed exception, logs a more\nuseful error message, and re-raises the exception. In addition,\nthe config help for the [api_database] group and \"configuration\"\noption specifically are updated to mention they should not be set\non the nova-compute service.\n\nNOTE(mriedem): The test was modified to set the LAST_VERSION\nglobal to None since change I48109d5e32a2e9635c240da1c77f7f6cc7e3c76d\nis not in Stein.\n\nChange-Id: Iac2911a7a305a9d14bc6dadb364998f3ecb9ce42\nRelated-Bug: #1807044\nCloses-Bug: #1839360\n(cherry picked from commit 7d7d58509d5e60ec19c6310931dc62eeff033595)\n(cherry picked from commit bd03723a0c1a16d67433658fb486a84bb1bddf02)\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/e14dd1d4d0f7ca3791025808cd5f7c65371bb2dc"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/e14dd1d4d0f7ca3791025808cd5f7c65371bb2dc"}]},"branch":"refs/heads/stable/rocky"},"7732f0e6f3691025a06f2abfc5a57c71d83e5e72":{"kind":"NO_CODE_CHANGE","_number":2,"created":"2019-08-30 13:41:37.000000000","uploader":{"_account_id":6873,"name":"Matt Riedemann","email":"mriedem.os@gmail.com","username":"mriedem"},"ref":"refs/changes/49/679449/2","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/nova","ref":"refs/changes/49/679449/2","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/nova refs/changes/49/679449/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/nova refs/changes/49/679449/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/nova refs/changes/49/679449/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/nova refs/changes/49/679449/2"}}},"commit":{"parents":[{"commit":"7be800d14a69225a1bbf7823bac57f318ad21412","subject":"Merge \"Restore soft-deleted compute node with same uuid\" into stable/rocky","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/7be800d14a69225a1bbf7823bac57f318ad21412"}]}],"author":{"name":"Matt Riedemann","email":"mriedem.os@gmail.com","date":"2019-08-07 16:23:15.000000000","tz":-240},"committer":{"name":"Matt Riedemann","email":"mriedem.os@gmail.com","date":"2019-08-30 13:41:35.000000000","tz":0},"subject":"Add useful error log when _determine_version_cap raises DBNotAllowed","message":"Add useful error log when _determine_version_cap raises DBNotAllowed\n\nChange Icddbe4760eaff30e4e13c1e8d3d5d3f489dac3c4 was intended for the\nAPI service to check all cells for the minimum nova-compute service\nversion when [upgrade_levels]/compute\u003dauto.\n\nThat worked in the gate with devstack because we don\u0027t configure\nnova-compute with access to the database and run nova-compute with\na separate nova-cpu.conf so even if nova-compute is on the same\nhost as the nova-api service, they aren\u0027t using the same config\nfile (nova-api runs with nova.conf which has access to the API DB\nobviously).\n\nThe problem is when nova-compute is configured with\n[upgrade_levels]/compute\u003dauto and an [api_database]/connection,\nthere are flows that can try to hit the API database directly\nbecause of the _determine_version_cap method. For example, the\n_sync_power_states periodic task trying to stop an instance,\nor even simple inter-compute communication over RPC like during\na resize.\n\nThis change simply catches the DBNotAllowed exception, logs a more\nuseful error message, and re-raises the exception. In addition,\nthe config help for the [api_database] group and \"configuration\"\noption specifically are updated to mention they should not be set\non the nova-compute service.\n\nChange-Id: Iac2911a7a305a9d14bc6dadb364998f3ecb9ce42\nRelated-Bug: #1807044\nCloses-Bug: #1839360\n(cherry picked from commit 7d7d58509d5e60ec19c6310931dc62eeff033595)\n(cherry picked from commit bd03723a0c1a16d67433658fb486a84bb1bddf02)\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/7732f0e6f3691025a06f2abfc5a57c71d83e5e72"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/7732f0e6f3691025a06f2abfc5a57c71d83e5e72"}]},"branch":"refs/heads/stable/rocky"}},"requirements":[],"submit_records":[],"submit_requirements":[]}