Thanks a lot Remo and Nasir for your quick replies but I am still facing this problem. Based on your replies I did some googling and found this website which showed how to configure sshkeys for nova
http://www.adminz.in/2015/04/enabling-instance-resizing-in-openstack.html After following this I get a different error which says "Permission Denied" The situation on my setup is that I have multinode setup and the storage is mounted over nfs and /var/lib/nova folder is mounted on each compute node so .ssh folder will be having same data on all the compute nodes. 192.168.x.x:/home/shared 1.1T 74G 921G 8% /var/lib/nova This is how my files look [root@controller ~(keystone_admin)]# ls -ltr /root/.ssh/ total 16 -rw-r--r--. 1 root root 400 May 25 08:15 id_rsa.pub -rw-------. 1 root root 1675 May 25 08:15 id_rsa -r--------. 1 root root 400 May 25 08:15 authorized_keys -rw-r--r-- 1 root root 1888 Oct 12 07:07 known_hosts [root@controller ~(keystone_admin)]# [root@controller ~(keystone_admin)]# ls -ltr /var/lib/nova/.ssh/ total 24 -rw------- 1 root root 981 Oct 13 04:04 authorized_keys -rw------- 1 root root 23 Oct 13 04:04 config -rw------- 1 root root 1678 Oct 13 04:04 id_rsa -rw-r--r-- 1 root root 400 Oct 13 04:04 id_rsa.pub [root@controller ~(keystone_admin)]# BR, Varun On Mon, Oct 12, 2015 at 5:31 PM, Remo Mattei <[email protected]> wrote: > id nova > > On Oct 12, 2015, at 07:53, Nasir Mahmood <[email protected]> wrote: > > Remo us right, > > Do a test here, > > On compute1 > > #su - nova > #touch `hostname.dat` > #scp -p `hostname.dat` compute2:/var/lib/nova/instances/ > > On compute2: > > #su - nova > #touch `hostname.dat` > #scp -p `hostname.dat` compute1:/var/lib/nova/instances/ > > I don't remember exact username for nova user. > On 12 Oct 2015 19:43, "Remo Mattei" <[email protected]> wrote: > >> To make this work just login as nova, create an ssh key copy that key >> over the compute and you should be fine. I would do ssh-copy-id from the >> nova to the other machines. >> >> Repeat this as needed. (compute 1 to compute 2 etc) >> >> Remo >> >> On Oct 12, 2015, at 07:00, Nasir Mahmood <[email protected]> wrote: >> >> Varun, >> >> Yes, it's key based authentication for nova user or in other words >> passwordless authentication based on ssh keys.. apologise for confusing >> lines >> On 12 Oct 2015 18:20, "varun bhatnagar" <[email protected]> wrote: >> >>> Hello Nasir, >>> >>> Thanks for your reply. >>> When you say "enable ssh Keys authentication for nova user between >>> compute nodes" do you mean setting some parameter in nova.conf or do you >>> mean setting public keys so that a user can ssh without using password? >>> >>> BR, >>> Varun >>> >>> On Mon, Oct 12, 2015 at 2:37 PM, Nasir Mahmood <[email protected]> >>> wrote: >>> >>>> did you enable ssh Keys authentication for nova user between compute >>>> nodes? >>>> >>>> >>>> On Mon, Oct 12, 2015 at 5:25 PM, varun bhatnagar <[email protected] >>>> > wrote: >>>> >>>>> Hi, >>>>> >>>>> I have OpenStack Juno with multinode setup. >>>>> The instance storage is mounted over NFS and is shared between all the >>>>> computes. >>>>> I am trying to migrate an instance but while doing so the instance >>>>> runs into ERROR state by throwing the below error message: >>>>> >>>>> *Failed to launch instance "test_instance": Please try again later >>>>> [Error: Unexpected error while running command. Command: ssh >>>>> 192.168.151.104 mkdir -p >>>>> /var/lib/nova/instances/328dc46e-8a1e-44ae-8450-6619b66203cd Exit code: >>>>> 255 >>>>> Stdout: u'' Stderr: u'Host key verification failed.\r\n']. * >>>>> >>>>> When I try to execute this command *(mkdir -p >>>>> /var/lib/nova/instances/328dc46e-8a1e-44ae-8450-6619b66203cd) *it >>>>> gets executed properly. >>>>> >>>>> Can anyone please help in fixing this? >>>>> >>>>> BR, >>>>> Varun >>>>> >>>>> _______________________________________________ >>>>> Mailing list: >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> Post to : [email protected] >>>>> Unsubscribe : >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> >>>>> >>>> >>>> >>>> -- >>>> Nasir Mahmood >>>> >>> >>> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : [email protected] >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> >> !DSPAM:1,561bbfba118169940716644! >> >> >> !DSPAM:1,561bcb46152291244917990! > > >
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