Has anybody ever written a script that grabs the host public key from the instance's console and updates the .ssh/config/known_hosts file accordingly, instead of throwing away host key checking? That would be a handy little thing if it was out there.
Take care, Lorin -- Lorin Hochstein Lead Architect - Cloud Services Nimbis Services, Inc. www.nimbisservices.com On May 21, 2012, at 6:09 AM, Joe Breu wrote: > Hi Eric, > > It would appear that the nova user on one of the compute nodes had at one > time cached the SSH host key of the other node and now the key has changed. > You can bypass this by adding the following to ~nova/.ssh/config on both > compute nodes: > > Host * > StrictHostKeyChecking no > UserKnownHostsFile=/dev/null > > > --- > Joseph Breu > Deployment Engineer > Rackspace Cloud Builders > 210-312-3508 > > On May 21, 2012, at 11:34 AM, Eric Luo wrote: > >> Hello ,all. >> >> I have a two nodes installation . OS1 is the cloud controller ,and OS2 is a >> nova-compute node. >> I have a vm (name as vm1) running on OS1. >> When I use the command nova migrate vm1 >> >> The dashboard is showing the vm1 as : status :error ,task :Resize Prep >> I tail ed the nova-compute.log in OS1, and found the following error >> information while running the nova migrate vm1 command : >> >> >> Can someone please explain to me what does these error mean ,and what's >> wrong with my config ... >> >> >> 2012-05-21 17:20:45 ERROR nova.compute.manager >> [req-d0f494cb-e9d6-41d2-b6df-6faa432a644d 6ffaaedb60c24f5eb888319e1e387d75 >> 0d7a5a12b6f54aa9bff986bf138bc0b7] Unex pected error while running command. >> Command: ssh 192.168.0.205 mkdir -p /var/lib/nova/instances/instance-0000000a >> Exit code: 255 >> Stdout: '' >> Stderr: 'Host key verification failed.\r\n'. Setting instance vm_state to >> ERROR >> 2012-05-21 17:20:45 ERROR nova.rpc.amqp >> [req-d0f494cb-e9d6-41d2-b6df-6faa432a644d 6ffaaedb60c24f5eb888319e1e387d75 >> 0d7a5a12b6f54aa9bff986bf138bc0b7] Exception during message handling >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Traceback (most recent call last): >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 252, in >> _process_data >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp rval = node_func(context=ctxt, >> **node_args) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp return f(*args, **kw) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 153, in >> decorated_function >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp function(self, context, >> instance_uuid, *args, **kwargs) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 177, in >> decorated_function >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp sys.exc_info()) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/contextlib.py", line 24, in __exit__ >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp self.gen.next() >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 171, in >> decorated_function >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp return function(self, context, >> instance_uuid, *args, **kwargs) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1330, in >> resize_instance >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp >> self._set_instance_error_state(context, instance_uuid) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/contextlib.py", line 24, in __exit__ >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp self.gen.next() >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1325, in >> resize_instance >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp instance_type_ref, >> self._legacy_nw_info(network_info)) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp return f(*args, **kw) >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp File >> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line >> 2363, in migrate_disk_and_power_off >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp raise e >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp ProcessExecutionError: Unexpected >> error while running command. >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Command: ssh 192.168.0.205 mkdir -p >> /var/lib/nova/instances/instance-0000000a >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Exit code: 255 >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Stdout: '' >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Stderr: 'Host key verification >> failed.\r\n' >> 2012-05-21 17:20:45 TRACE nova.rpc.amqp >> ^C >> >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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