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Hosted Engine w Gluster - increase number of hosts
by ovirt＠fateknollogee.com 11 Jun '18

11 Jun '18

Using this as reference: https://www.ovirt.org/blog/2018/02/up-and-running-with-ovirt-4-2-and-gluste… Assuming you want to increase the number of hosts from 3 to 5 or 9. How do you add more hosts? What is best practice & any gotcha's?

7 15

gdeploy hosted engine failed but host says it is up what now?
by william.dossett＠gmail.com 11 Jun '18

11 Jun '18

Hi, Ovirt 4.2.3 I gdeplyed deployed glusterfs which seems to have gone well and then on to the hosted engine... which seemed to be going well, but then the ovirt engine did not come online... [ INFO ] TASK [Wait for the engine to come up on the target VM] [ ERROR ] fatal: [localhost]: FAILED! => {"attempts": 120, "changed": true, "cmd": ["hosted-engine", "--vm-status", "--json"], "delta": "0:00:00.225200", "end": "2018-06-09 15:15:24.434531", "rc": 0, "start": "2018-06-09 15:15:24.209331", "stderr": "", "stderr_lines": [], "stdout": "{\"1\": {\"conf_on_shared_storage\": true, \"live-data\": true, \"extra\": \"metadata_parse_version=1\\nmetadata_feature_version=1\\ntimestamp=17346 (Sat Jun 9 15:15:19 2018)\\nhost-id=1\\nscore=3400\\nvm_conf_refresh_time=17346 (Sat Jun 9 15:15:19 2018)\\nconf_on_shared_storage=True\\nmaintenance=False\\nstate=EngineStarting\\nstopped=False\\n\", \"hostname\": \"usbou-rhev01.pbi.global.pvt\", \"host-id\": 1, \"engine-status\": {\"reason\": \"failed liveliness check\", \"health\": \"bad\", \"vm\": \"up\", \"detail\": \"Up\"}, \"score\": 3400, \"stopped\": false, \"maintenance\": false, \"crc32\": \"e3c31ac3\", \"local_conf_timestamp\": 17346, \"host-ts\": 17346}, \"global_maintenance\": false}", "stdout_lines": ["{\"1\": {\"conf_on_shared_storage\": true, \"live-data\": true, \"extra\": \"metadata_parse_version=1\\nmetadata_feature_version=1\\ntimestamp=17346 (Sat Jun 9 15:15:19 2018)\\nhost-id=1\\nscore=3400\\nvm_conf_refresh_time=17346 (Sat Jun 9 15:15:19 2018)\\nconf_on_shared_storage=True\\nmaintenance=False\\nstate=EngineStarting\\nstopped=False\\n\", \"hostname\": \"usbou-rhev01.pbi.global.pvt\", \"host-id\": 1, \"engine-status\": {\"reason\": \"failed liveliness check\", \"health\": \"bad\", \"vm\": \"up\", \"detail\": \"Up\"}, \"score\": 3400, \"stopped\": false, \"maintenance\": false, \"crc32\": \"e3c31ac3\", \"local_conf_timestamp\": 17346, \"host-ts\": 17346}, \"global_maintenance\": false}"]} When I look at the host now it says Hosted Engine is running on the host, Hosted engine is up, but I can not ping it, ssh to it or open the console on the VM. I am pretty new to this setup so would appreciate any steps I can take to move this forward. Thanks Bill

3 6

VMs hung after migration
by Kapetanakis Giannis 11 Jun '18

11 Jun '18

Hi, Please have a look at BZ https://bugzilla.redhat.com/show_bug.cgi?id=1584775 about VM hung problems I have with latest kernels. Problem appeared after upgrading to 4.2.3 but I believe it has only to do with newer kernel and not any part of ovirt/vdsm/libvirt/qemu regards, Giannis

3 2

Latency and Bandwidth for Disk level statistics
by Hari Prasanth Loganathan 11 Jun '18

11 Jun '18

Hi Team, I have created a VM using oVirt, which is in UP state now. 1) I opened the guest console using oVirt 2) I want to get the statistics for disk so I tried to create and write some content in the file (say test.txt) in loop to increase the latency and bandwidth in disk. 3) I observed that CPU in VM statistics is increased to 100 % (This is a good news since I expected this also) But when I looked into the disk level statistics using the following API, I observe the data value as '0' always. https://172.30.X.X/ovirt-engine/api/disks/3bc267c0-a797-4e98-8ae9-217671649… { "statistic": [ { "kind": "gauge", "type": "decimal", "unit": "bytes_per_second", "values": { "value": [ { "datum": 0 } ] }, "disk": { "href": "/ovirt-engine/api/disks/3bc267c0-a797-4e98-8ae9-217671649287", "id": "3bc267c0-a797-4e98-8ae9-217671649287" }, "name": "data.current.read", "description": "Read data rate", "href": "/ovirt-engine/api/disks/3bc267c0-a797-4e98-8ae9-217671649287/statistics/33b9212b-f9cb-3fd0-b364-248fb61e1272", "id": "33b9212b-f9cb-3fd0-b364-248fb61e1272" }, { "kind": "gauge", "type": "decimal", "unit": "bytes_per_second", "values": { "value": [ { "datum": 0 } ] }, "disk": { "href": "/ovirt-engine/api/disks/3bc267c0-a797-4e98-8ae9-217671649287", "id": "3bc267c0-a797-4e98-8ae9-217671649287" }, "name": "data.current.write", "description": "Write data rate", "href": "/ovirt-engine/api/disks/3bc267c0-a797-4e98-8ae9-217671649287/statistics/2f23addd-4ebd-3d82-a449-c28778bc33eb", "id": "2f23addd-4ebd-3d82-a449-c28778bc33eb" } ] } *How can I increase the disk statistics using the VM Guest console?* *Any help is much appreciated.* Thanks, Hari

1 0

Hosted Engine: brick size...is this a bug?
by femi adegoke 11 Jun '18

11 Jun '18

I have now done the oVirt 4.2.3.1 install at least 5 times, no, I don't consider myself any kind of expert. Even though the HE uses less than 10gb of space for some reason the install will fail if the brick is less than 58gb. Why is that? Look at this error: [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is "[Problem while trying to mount target]". HTTP response code is 400. [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "Fault reason is \"Operation Failed\". Fault detail is \"[Problem while trying to mount target]\". HTTP response code is 400."} The size of the brick was set at 50gb: [lv1] action=create vgname=gluster_vg1 lvname=engine_lv lvtype=thick size=50GB mount=/gluster_bricks/engine Solution: Edit size to 60gb, re-run & voila, all is good. Is this a bug or maybe it's a problem with the way I'm doing things.

3 3

oVirt Version 4.2.3.5-1.el7.centos cannot change password from user (Bad Request)
by Alejandro Cortina 11 Jun '18

11 Jun '18

Hi there, I have created a new user from hosted engine by: ovirt-aaa-jdbc-tool user add test_user --attribute=description='test user' --attribute=firstName=test_user ovirt-aaa-jdbc-tool user password-reset test_user --password=pass:changeme then I try to login and I get the message: *Unable to log in because the password has expired. Change the password to proceed. * When I click "Change the password" the browser redirects to: https://FQDN/ovirt-engine/sso/%s and I get *Bad RequestYour browser sent a request that this server could not understand.* Last time I tried with 4.2.1 and it was working with no issues. Cheers, Alex

2 2

Snapshotting Oracle 11g on oVirt
by Vinícius Ferrão 10 Jun '18

10 Jun '18

Hello, I’m planning to install Oracle 11g on a VM inside oVirt. I already knew about the licensing hell of running Oracle 11g on a virtualized environment. The question is about snapshotting Oracle 11gb when the VM is running. Is this supported? For example, on VMware and XenServer there’s the quiesce option to make the filesystem, with a little help from the guest agent, to be in an a good state for snapshots. But in oVirt, how this is handled? If supported, which operating systems are compatible with the feature? Thanks,

3 2

Ovirt 4.2 SDK - Way to add files with CloudInit()
by atripathi＠hypergrid.com 10 Jun '18

10 Jun '18

Hi. I am using Ovirt 4.2 Java SDK. Quick query, can we add additional files to ~openstack/content and modify meta_data.json to point these files. I can see we can add files to .cloudInit(cloudInit().files(files)) But API ignores it .. I checked it on /var/log/ovirt-engine/engine.log as well as the img created and attached with VM Reference - Cloudinit version support such files cat meta_data.json {"files": [{"path": "/etc/injected_files", "content_path": "/content/0000"}, {"path": "/etc/trove/conf.d/guest_info.conf", "content_path": "/content/0001"}, {"path": "/etc/trove/conf.d/trove-guestagent.conf", "content_path": "/content/0002"}], reference https://bugs.launchpad.net/cloud-init/+bug/1602373

1 0

After minor upgrade oVirt Node to 4.2.3 can't start Virtual machine
by stefan.palecek＠x112.cz 10 Jun '18

10 Jun '18

Dear all, after upgrade oVirt Node to latest 4.2.3 I can't start any virtual machine with network interface. VM machine without network interface starts normally. Exactly the same situation is on freshly installed oVirt node machine with different hardware. I use openvswitch on both machines. After some searching I found out that there are the same version of openvswitch(2.9.0-3) on old and new version of oVirt node but different versions of libvirt(3.9.0-14 vs 3.2.0-14) Error message of libvirtd when the VM machine fail to start: VM OPNsense is down with error. Exit message: Unable to add bridge ovirtmgmt port vnet0: Operation not supported. Any suggestions? Thank you. Stefan

4 4

Upgrading ovirt 4.1 -> ovirt 4.2
by Alex K 10 Jun '18

10 Jun '18

Hi all, If one cannot perform a minor upgrade of ovirt 4.1 (due to surprisingly missing repos...) is it ok to ignore this and proceed directly to major upgrade to ovirt 4.2? I don't like very much the idea as I don't know to what surprises I will have considering that this is production. What is your experience/suggestions? Alex

2 1