Ask Your Question

ComputeHostNotFound_Remote: Compute host controller1 could not be found. [closed]

asked 2018-08-06 02:30:47 -0500 gravatar image

updated 2018-08-06 02:34:21 -0500

Hi community,

I have setup openstack pike on ubuntu 16.04 about half a year ago.

It consists of controller1 ,controller2,compute1,compute2.

It already has three compute nodes : controller2,compute1,compute2

Now I want to add controller1 to compute nodes.

I set it up according to

But it fail to add controller1 to compute nodes.

I try to boot a vm after I disabled controller2,compute1,compute2

It shows error: No Vaild host found .

/var/log/nova/nova-compute.log shows :

No compute node record for host controller1: ComputeHostNotFound_Remote: Compute host controller1 could not be found.

root@controller1:~# nova service-list --binary nova-compute |grep controller1

| bfdacdd5-ede8-488c-98c3-fcec2943c39b | nova-compute | controller1 | nova | enabled | up | 2018-08-06T07:21:18.000000 | - | False

but nova hypervisor-list does not shows controller1

root@controller1:~# su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova ## does not find controller1

Found 2 cell mappings. Skipping cell0

since it does not contain hosts.

Getting computes from cell 'cell1': 7eba3d3e-3886-48fd-828c-e5ef562b414f

Found 0 unmapped computes in cell:7eba3d3e-3886-48fd-828c-e5ef562b414f

Any hints is appreciated! Thank you !

edit retag flag offensive reopen merge delete

Closed for the following reason the question is answered, right answer was accepted by
close date 2018-08-06 04:26:32.983041

1 answer

Sort by » oldest newest most voted

answered 2018-08-06 03:10:27 -0500 gravatar image

I have found another error in nova-compute.log on controller1:

Could not open '/var/lib/libvirt/images/win7.qcow2': Permission denied\n"

It turn out that other workmate has created some vm using virt-install on controller1 some days ago.

so this time , when I setup compute service on controller1 , it will install libvirtd , and something may mess up .

After undefining the old vm(virsh undefine win7)and restart services, it succeed to add controller1 to compute nodes.

edit flag offensive delete link more

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower


Asked: 2018-08-06 02:30:47 -0500

Seen: 2,317 times

Last updated: Aug 06 '18