Ask OpenStack has these updates, please have a look:
   - Failed to discover available identity versions when trying to create
   Keystone domain
  
<
https://ask.openstack.org/en/question/126864/failed-to-discover-available...
    (1 rev)
   - connection to db close_wait
  
<
https://ask.openstack.org/en/question/126863/connection-to-db-close_wait/...
    (new question)
   - nova-api error every 5 minutes
  
<
https://ask.openstack.org/en/question/126862/nova-api-error-every-5-minut...
    (new question)
   - fail deployment
   <
https://ask.openstack.org/en/question/126861/fail-deployment/?sort=latest...
    (3 rev)
   - What is it causing this error whilst running: sudo gnocchi-api?
  
<
https://ask.openstack.org/en/question/126859/what-is-it-causing-this-erro...
    (new question)
   - neutron.plugins.ml2.drivers.agent._common_agent KeyError: 'gateway'
  
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https://ask.openstack.org/en/question/125368/neutronpluginsml2driversagen...
    (5 ans, 5 ans rev)
   - libvirtError: internal error: No free USB ports
  
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https://ask.openstack.org/en/question/108312/libvirterror-internal-error-...
    (5 rev, 3 ans, 3 ans rev)
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