nova-common upgrade fails with "CantStartEngineError: No sql_connection parameter is established"

[György Szombathelyi]

In nova-common 2:16.0.0-b2 when nova.conf doesn't have any sql connection parameter (it is normal for a compute), then the nova-manage api_db sync command in nova-common.postinst fails.

The problem is with the conditional:
    if ! grep -qE "^(sql_)?connection( )?=.*" /etc/nova/nova.conf || \
         grep -qE "^(sql_)?connection.*sqlite.*" /etc/nova/nova.conf
    then
      su -s /bin/sh -c 'nova-manage api_db sync' nova
      su -s /bin/sh -c 'nova-manage db sync' nova
    fi

The first grep checks if the sql_connection is not in nova.conf, which is a wrong condition to execute api_db sync. I think it should be deleted.

[Corey Bryant (corey.bryant)]

Thank you very much for reporting this. We have another bug with patches being worked on for this problem. Let's track this issue there.