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2019-08-13 05:42:21 -0500 asked a question After host crash ceph vm volumes locked

We had a crash of one of our OpenStack hosts. After the reboot the VMs on that machine have not been able to start because of filesystem errors. Some investigations later we noticed that the VM ephemeral volumes (which we store in Ceph RBD) had still a write lock.

Manually remove the lock allowed us to start the VMs again, but I wonder if there should be an automated process for this. Should the ceph client normally detect that it is the same host retrying the lock? (We do use some docker containers for the OpenStack and Ceph, so it might be a problem with new „host“ names)

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2018-11-29 16:58:19 -0500 commented answer Dnsmasq as dns proxy

This means do not specify dnsmasq_dns_servers. How do I specify what upstream DNS resolver dnsmasq should use in this case?

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2018-11-28 16:31:26 -0500 asked a question Dnsmasq as dns proxy

The https://docs.openstack.org/newton/networking-guide/config-dns-res.html (documentation) „Name resolution for instances“ describes 4 methods on how to configure the DHCP offered DNS nameserver address to instances.

What I am missing there is a method to configure „announce the dnsmasq internal nameserver ip“. Is this option intentionally missing or how will it be configured? It generally seems to be the first DHCP pool address in a subnet so I could configure it static, but some kind of global setting via Keyword or flag seems to be more natural.

(The stack is currently liberty old, but answers about current releases are also appreciated)