Launch of a instance failed in juno devstack on ubuntu server 14.04 virtual machine. I am getting error "Host not found". Below is part of /opt/stack/logs/screen/screen-n-cond.log 2014-08-30 12:06:51.721 ERROR nova.scheduler.utils [req-744ba1cf-7433-46b4-9771-9600a87e8c28 admin admin] [instance: 2a679ed7-2f60-493a-a6cf-d937f11f442b] Error from last host: juno-devstack-server (node juno-devstack-server): [u'Traceback (most recent call last):\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 1932, in do_build_and_run_instance\n filter_properties)\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 2061, in _build_and_run_instance\n instance_uuid=instance.uuid, reason=six.text_type(e))\n', u'RescheduledException: Build of instance 2a679ed7-2f60-493a-a6cf-d937f11f442b was re-scheduled: not all arguments converted during string formatting\n'] 2014-08-30 12:06:51.724 INFO oslo.messaging._drivers.impl_rabbit [req-744ba1cf-7433-46b4-9771-9600a87e8c28 admin admin] Connecting to AMQP server on 192.168.2.153:5672 2014-08-30 12:06:51.736 INFO oslo.messaging._drivers.impl_rabbit [req-744ba1cf-7433-46b4-9771-9600a87e8c28 admin admin] Connected to AMQP server on 192.168.2.153:5672 2014-08-30 12:06:51.763 WARNING nova.scheduler.driver [req-744ba1cf-7433-46b4-9771-9600a87e8c28 admin admin] [instance: 2a679ed7-2f60-493a-a6cf-d937f11f442b] NoValidHost exception with message: 'No valid host was found.' 2014-08-30 12:06:51.763 WARNING nova.scheduler.driver [req-744ba1cf-7433-46b4-9771-9600a87e8c28 admin admin] [instance: 2a679ed7-2f60-493a-a6cf-d937f11f442b] Setting instance to ERROR state.
Earlier also i mailed and i got reply "Compute node do not support QEMU hypervisor from Juno. So, you should not deploy a compute node on VM" Is there any link in support of this answer? Also some other observation is below: Before ./stack.sh,contents of hosts file is: vi /etc/hosts 127.0.0.1 localhost 192.168.2.153 juno-devstack-server #127.0.1.1 juno-devstack-server # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters After ./stack.sh,contents of host file is: 127.0.0.1 localhost *juno-devstack-server* 192.168.2.153 juno-devstack-server #127.0.1.1 juno-devstack-server # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters Regards Nikesh
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