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ovirt 4.2.6 and cockpit with plain hosts
by Gianluca Cecchi 09 Oct '18

09 Oct '18

Is cockpit supposed to run on plain CentOS hosts? I didn't have it installed: possibly because it started as a hypervisor host in version 3.x when cockpit not available. During updates it has not put in as a requirement package. I manually installed it and then enabled/started the cockpit.socket systemd unit. It seems started and I can correctly connect to https at tcp port 9090, but when doing a status of the cockpit.socket unit I see Oct 09 15:59:01 ov300 update-motd[22990]: /usr/share/cockpit/motd/update-motd: line 24: /run/cockpit/active.motd: No such file or directory Oct 09 15:59:01 ov300 ln[22998]: /bin/ln: failed to create symbolic link ‘/run/cockpit/motd’: No such file or directory Oct 09 15:59:01 ov300 systemd[1]: Listening on Cockpit Web Service Socket. Line 24 of /usr/share/cockpit/motd/update-motd : printf 'Web console: %s%s\n\n' "${hostname_url}" "${ip_url}" > /run/cockpit/active.motd and on the host [root@ov300 ~]# ll -d /run/c* drwxr-x---. 2 chrony chrony 60 May 24 16:18 /run/chrony -rw-r--r--. 1 root root 5 May 24 16:18 /run/chronyd.pid drwxr-xr-x. 2 root root 40 May 24 16:18 /run/console -rw-r--r--. 1 root root 5 May 24 16:18 /run/crond.pid ----------. 1 root root 0 May 24 16:18 /run/cron.reboot [root@ov300 ~]# Is this a bug? Can I manually create the " /run/cockpit" directory? Thanks, Gianluca

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Migrating to Gluster HCI - Export/Import
by Vincent Royer 09 Oct '18

09 Oct '18

I'm upgrading from 2 host w/ attached storage to 3-host HCI w/Gluster. What is the procedure for this? Is export domain depreciated? 1. Shut down and export all VMs - Do I use export domain? Or is the "Backup Domain" the newer method? 2. Detach domains from cluster and wipe hosts 3. Build HCI cluster, setup gluster bricks/vols 4. Attach backup domain and import VMs Thanks! Vincent

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oVirt guest tools
by Alex K 09 Oct '18

09 Oct '18

Hi all, I am running ovirt 4.2 with hosts based on CentOS 7. I see that the latest guest tools are the following: https://resources.ovirt.org/pub/ovirt-4.2/iso/oVirt-toolsSetup/4.2-3.el7/oV… https://resources.ovirt.org/pub/ovirt-4.2/iso/oVirt-toolsSetup/4.2-1.el7.ce… 4.2-3.el7 seems to have newer version than 4.2-1.el7.centos. Can I use 4.2-3.el7 ISO? Thanx, Alex

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Storage advice
by Brain Recursion 09 Oct '18

09 Oct '18

I have a small oVirt cluster running but I have been having problems with the storage and would like to completely start again with the storage infrastructure. Currently for storage I have a single server running windows storage server serving oVirt via iSCSI. I also have a smaller storage server which is currently not used. The oVirt cluster is not running a production environment but ideally I do not want to have to power it all off to patch the storage servers and oVirt cluster. 1x storage server, raid 10 24TB usable, 2x 10Gb ethernet 1x storage server, raid 10 4TB usable, 4x 1Gb ethernet 8x oVirt hosts, 1x10Gb ethernet on each 1x 24port 10Gb switch What would be the best way to utilise the storage servers? I was thinking about sticking CentOS on both servers and running Gluster with a 4TB replicated volume across both servers for the hosted engine and other critical VMs and then a 20TB non-replicated Gluster volume running on just the larger storage server for non critical VMs. I have another spare server which i could potentially use as a arbiter node. Would this work or would I have huge problems as the hardware performance of each storage server is so different? Any advice appreciated.

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Home ovirt setup (new to ovirt)
by ryancoeit＠gmail.com 09 Oct '18

09 Oct '18

Hello My names ryan and im studying for my rhcsa and rhce also a linux enthusiast, im setting up my first ovirt server and have my ovirt engine setup aswell as my data center and host, ive come to the point where i need to configure storage. Ovirt is installed on a 256GB nvme ssd with my iso and master data domain pointed to the drive. I have 2 WD 2TB hard drives available that havent been allocated yet, id like them to be combined with lvm and have a single share exported via nfs that all vm's (3 vm's) in total can access for data storage Is this possible ? Kind Regards Ryan

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removing FC storage
by David David 09 Oct '18

09 Oct '18

How to remove FC storage domain correctly? I turned off the FC storage domain in the cluster (maintenance -> detach -> remove), but the volume group still remained on the hosts and I would have to remove them manually and need to clear a multipath links too, before I turn off the LUN on the FC storage. How will the cluster behave if there are differences in the volume groups on the hosts? Because I can’t simultaneously delete partitions and multipath links on all hosts, and this process will occur sequentially on each host.

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Cannot delete a stuck task
by Markus Schaufler 09 Oct '18

09 Oct '18

Hi, The task "Adding disk" is stuck at "creating volume". I tried to delete the task with "taskcleaner.sh", at CLI with list / remove jobs, deleted lastly the VM and restartet the engine-vm. But its still in the task list. Any idea to remove this job?

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Gluster JSON-RPC errors
by Maton, Brett 09 Oct '18

09 Oct '18

I'm seeing the following errors appear in the event log every 10 minutes for each participating host in the gluster cluster GetGlusterVolumeHealInfoVDS failed: Internal JSON-RPC error: {'reason': "'bool' object has no attribute 'getiterator'"} Gluster brick health is good Any ideas ? oVirt 4.2.7.2-1.el7 CentOS 7

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New oVirt deployment suggestions
by Stefano Danzi 08 Oct '18

08 Oct '18

Hello! I'm almost ready to start with a new oVirt deplyment. I will use CentOS 7, self hosting engine and glusert storage. I have 3 phisical host. Each host has four NIC. My first idea is: - configure bond betwheen NICs - configure a VLAN interface for management network (and local lan) - configure a VLAN interface for gluster network - configure gluster for the hosted engine - start "hosted-engine --deploy" process is this enough? do I need a phisical dedicated NIC for management network? Bye

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VM Portal noVNC Console invocation
by briwils2＠cisco.com 08 Oct '18

08 Oct '18

When I use the VM Portal and invoke a console I'm not sure how i can leverage the html5 noVNC version of this. I can only get the .vv file and would like to use a web based console, or rather provide them to users of an engine. TIA Brian

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