Re: [ovirt-users] Error during hosted-engine-setup for 3.5.1 on F20 (Cannot add the host to cluster ... SSH has failed)

From: "Bob Doolittle" <bob(a)doolittle.us.com&gt; To: "Simone Tiraboschi" <stirabos(a)redhat.com&gt; Cc: "users-ovirt" <users(a)ovirt.org&gt; Sent: Monday, March 9, 2015 12:48:37 PM Subject: Re: [ovirt-users] Error during hosted-engine-setup for 3.5.1 on F20 (Cannot add the host to cluster ... SSH has failed) On 03/09/2015 07:12 AM, Simone Tiraboschi wrote: > > ----- Original Message ----- >> From: "Bob Doolittle" <bob(a)doolittle.us.com&gt; >> To: "Simone Tiraboschi" <stirabos(a)redhat.com&gt; >> Sent: Monday, March 9, 2015 12:02:49 PM >> Subject: Re: [ovirt-users] Error during hosted-engine-setup for 3.5.1 on >> F20 (Cannot add the host to cluster ... SSH >> has failed) >> >> On Mar 9, 2015 5:23 AM, "Simone Tiraboschi" <stirabos(a)redhat.com&gt; wrote: >>> >>> >>> ----- Original Message ----- >>>> From: "Bob Doolittle" <bob(a)doolittle.us.com&gt; >>>> To: "users-ovirt" <users(a)ovirt.org&gt; >>>> Sent: Friday, March 6, 2015 9:21:20 PM >>>> Subject: [ovirt-users] Error during hosted-engine-setup for 3.5.1 on >> F20 (Cannot add the host to cluster ... SSH has >>>> failed) >>>> >>>> Hi, >>>> >>>> I'm following the instructions here: >> http://www.ovirt.org/Hosted_Engine_Howto >>>> My self-hosted install failed near the end: >>>> >>>> To continue make a selection from the options below: >>>> (1) Continue setup - engine installation is complete >>>> (2) Power off and restart the VM >>>> (3) Abort setup >>>> (4) Destroy VM and abort setup >>>> >>>> (1, 2, 3, 4)[1]: 1 >>>> [ INFO ] Engine replied: DB Up!Welcome to Health Status! >>>> Enter the name of the cluster to which you want to add the >> host >>>> (Default) [Default]: >>>> [ ERROR ] Cannot automatically add the host to cluster Default: Cannot >> add >>>> Host. Connecting to host via SSH has failed, verify that the host is >>>> reachable (IP address, routable address etc.) You may refer to the >>>> engine.log file for further details. >>>> [ ERROR ] Failed to execute stage 'Closing up': Cannot add the host to >>>> cluster Default >>>> [ INFO ] Stage: Clean up >>>> [ INFO ] Generating answer file >>>> '/var/lib/ovirt-hosted-engine-setup/answers/answers-20150306135624.conf' >>>> [ INFO ] Stage: Pre-termination >>>> [ INFO ] Stage: Termination >>>> >>>> I can ssh into the engine VM both locally and remotely. There is no >>>> /root/.ssh directory, however. Did I need to set that up somehow? >>> It's the engine that needs to open an SSH connection to the host calling >> it by its hostname. >>> So please be sure that you can SSH to the host from the engine using its >> hostname and not its IP address. >> >> I'm assuming this should be a password-less login (key-based >> authentication?). > Yes, it is. > >> As what user? > root OK, I see a couple of problems. First off, I didn't have my deploying-host hostname in the hosts map for my engine.

After adding it to /etc/hosts (both hostname and FQDN), when I try to ssh from root@engine to root@host it is prompting me for a password. On my engine, ~root/.ssh does not contain any keys. On my host, ~root/.ssh has authorized_keys, and in it there is a key with the comment "ovirt-engine". It's possible that I inadvertently removed ~root/.ssh on engine while I was preparing the engine (I started to set up my own no-password logins and then thought better and cleaned up, not realizing that some prior setup affecting that directory had occurred). That would explain the second issue.

How/when does the key for root@engine get populated to the host's ~root/.ssh/authenticated_keys during setup?

-Bob > >> -Bob >> >>> Till hosted-engine hosts were simply identified by their IP address but >> than we had some bug report on side effects of that. >>> So now we generate and sign certs using host hostnames and so the engine >> should be able to correctly resolve them. >>>> When I log into the Administration portal, the engine VM does not appear >>>> under the Virtual machine view (it's empty). >>> It's cause the setup didn't complete. >>> >>>> I've attached what I think are the relevant logs. >>>> >>>> Also, when my host reboots, the ovirt-ha-broker and ovirt-ha-agent >> services >>>> do not come up automatically. I have to use systemctl to start them >>>> manually. >>> It's cause the setup didn't complete. >>> >>>> This is a fresh Fedora 20 machine installing a fresh copy of Ovirt >> 3.5.1. >>>> What's the cleanest approach to restore/complete sanity of my setup >> please? >>> First step is to clarify what went wrong in order to avoid it in the >> future. >>> Than, if you want a really sanity environment for production use I'd >> suggest to redeploy. >>> So >>> hosted-engine --vm-poweroff >>> empty the storage domain share and deploy again >>> >>>> Thanks, >>>> Bob >>>> >>>> >>>> I've linked 3 files to this email: >>>> server.log (12.4 MB) Dropbox https://db.tt/g5p09AaD >>>> vdsm.log (3.2 MB) Dropbox https://db.tt/P4572SUm >>>> ovirt-hosted-engine-setup-20150306123622-tad1fy.log (413 KB) Dropbox >>>> https://db.tt/XAM9ffhi >>>> Mozilla Thunderbird makes it easy to share large files over email. >>>> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>>>