<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">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. <div class=""><br class=""></div><div class="">Repeat this as needed. (compute 1 to compute 2 etc)</div><div class=""><br class=""></div><div class="">Remo <br class=""><div><blockquote type="cite" class=""><div class="">On Oct 12, 2015, at 07:00, Nasir Mahmood <<a href="mailto:nasir.mahmood@gmail.com" class="">nasir.mahmood@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><p dir="ltr" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Varun,</p><p dir="ltr" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Yes, it's key based authentication for nova user or in other words passwordless authentication based on ssh keys.. apologise for confusing lines</p><div class="gmail_quote" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">On 12 Oct 2015 18:20, "varun bhatnagar" <<a href="mailto:varun292006@gmail.com" class="">varun292006@gmail.com</a>> wrote:<br type="attribution" class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div dir="ltr" class="">Hello Nasir,<div class=""><br class=""></div><div class="">Thanks for your reply.</div><div class="">When you say "<span style="font-size: 12.8px;" class="">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?</span></div><div class=""><span style="font-size: 12.8px;" class=""><br class=""></span></div><div class=""><span style="font-size: 12.8px;" class="">BR,</span></div><div class=""><span style="font-size: 12.8px;" class="">Varun</span></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Mon, Oct 12, 2015 at 2:37 PM, Nasir Mahmood<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:nasir.mahmood@gmail.com" target="_blank" class="">nasir.mahmood@gmail.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div dir="ltr" class="">did you enable ssh Keys authentication for nova user between compute nodes?<div class=""><br class=""></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote"><div class=""><div class="">On Mon, Oct 12, 2015 at 5:25 PM, varun bhatnagar<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:varun292006@gmail.com" target="_blank" class="">varun292006@gmail.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""></div></div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div class=""><div class=""><div dir="ltr" class="">Hi,<div class=""><br class=""></div><div class="">I have OpenStack Juno with multinode setup.</div><div class="">The instance storage is mounted over NFS and is shared between all the computes.</div><div class="">I am trying to migrate an instance but while doing so the instance runs into ERROR state by throwing the below error message:</div><div class=""><b class=""><br class=""></b></div><div class=""><b class="">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']. </b><br class=""></div><div class=""><b class=""><br class=""></b></div><div class="">When I try to execute this command<span class="Apple-converted-space"> </span><b class="">(mkdir -p /var/lib/nova/instances/328dc46e-8a1e-44ae-8450-6619b66203cd)<span class="Apple-converted-space"> </span></b>it gets executed properly.</div><div class=""><b class=""><br class=""></b></div><div class="">Can anyone please help in fixing this?</div><div class=""><br class=""></div><div class="">BR,</div><div class="">Varun</div></div><br class=""></div></div>_______________________________________________<br class="">Mailing list:<span class="Apple-converted-space"> </span><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" rel="noreferrer" target="_blank" class="">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><br class="">Post to :<span class="Apple-converted-space"> </span><a href="mailto:openstack@lists.openstack.org" target="_blank" class="">openstack@lists.openstack.org</a><br class="">Unsubscribe :<span class="Apple-converted-space"> </span><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" rel="noreferrer" target="_blank" class="">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><br class=""><br class=""></blockquote></div><span class=""><font color="#888888" class=""><br class=""><br clear="all" class=""><div class=""><br class=""></div>--<span class="Apple-converted-space"> </span><br class=""><div class="">Nasir Mahmood<br class=""></div></font></span></div></blockquote></div><br class=""></div></blockquote></div><span style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">!DSPAM:1,561bbfba118169940716644! 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