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Host restarting for unknown reasons
by turboaaa＠gmail.com 28 Sep '18

28 Sep '18

I have a dual host, self hosted engine, cluster/datacenter. I call these Node1 and Node2. They are running CentOS 7 and I have been running the updates regular by putting each host into maintenance mode and installing the update via the web gui. Node1 is restarting at odd times, causing VMs on that node to start up on Node2 (which is by design). However the restarts are becoming more frequent and I am having a hard time figuring out what is causing it. Below is a snippet from the /var/log/ovirt-hosted-engine-ha/agent.log on Node1. My current plan is to simply rebuild Node1 by re-installing CentOS 7, and using the cluster tools to import it. MainThread::INFO::2018-09-10 10:04:25,907::hosted_engine::244::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Found certificate common name: node1.***.com MainThread::INFO::2018-09-10 10:04:34,200::hosted_engine::522::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Initializing ha-broker connection MainThread::INFO::2018-09-10 10:04:34,202::brokerlink::77::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor) Starting monitor ping, options {'addr': '192.168.4.1'} MainThread::ERROR::2018-09-10 10:04:34,203::hosted_engine::538::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Failed to start necessary monitors MainThread::ERROR::2018-09-10 10:04:34,203::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent return action(he) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper return he.start_monitoring() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 413, in start_monitoring self._initialize_broker() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 535, in _initialize_broker m.get('options', {})) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 83, in start_monitor .format(type, options, e)) RequestError: Failed to start monitor ping, options {'addr': '192.168.4.1'}: [Errno 2] No such file or directory MainThread::ERROR::2018-09-10 10:04:34,204::agent::145::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent MainThread::INFO::2018-09-10 10:04:34,204::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent shutting down MainThread::INFO::2018-09-10 10:04:44,545::agent::67::ovirt_hosted_engine_ha.agent.agent.Agent::(run) ovirt-hosted-engine-ha agent 2.2.16 started MainThread::INFO::2018-09-10 10:04:44,583::hosted_engine::244::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Found certificate common name: node1.***.com MainThread::INFO::2018-09-10 10:04:44,744::hosted_engine::522::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Initializing ha-broker connection MainThread::INFO::2018-09-10 10:04:44,745::brokerlink::77::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor) Starting monitor ping, options {'addr': '192.168.4.1'} MainThread::ERROR::2018-09-10 10:04:44,746::hosted_engine::538::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Failed to start necessary monitors MainThread::ERROR::2018-09-10 10:04:44,746::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent return action(he) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper return he.start_monitoring() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 413, in start_monitoring self._initialize_broker() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 535, in _initialize_broker m.get('options', {})) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 83, in start_monitor .format(type, options, e)) RequestError: Failed to start monitor ping, options {'addr': '192.168.4.1'}: [Errno 2] No such file or directory

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VM Migration
by Budur Nagaraju 27 Sep '18

27 Sep '18

Hi , Have build oVirt4.2 setup with node4.2 ,while doing a vm migration am facing issues , below is the attached error. Can you please help to resolve? https://pastebin.com/BAzCsbAS Thanks, Nagaraju

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upgrade 4.2.6 to 4.2.6.1: node status degraded
by femi adegoke 27 Sep '18

27 Sep '18

Upgrading one of my oVirt Node hosts from 4.2.6 to 4.2.6.1 The host will not boot, it has the following message: node status: DEGRADED Please check the status manually using 'nodectl check' # nodectl check Status: FAILED Bootloader ... FAILED - It looks like there are no valid bootloader entries. Please ensure this is fixed before rebooting. Layer boot entries ... FAILED - No bootloader entries which point to imgbased layers **the rest of the message has a bunch of OK entries** How do I fix this?

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Adding arbiter to hyperconverged setup
by Simon Nussbaum 27 Sep '18

27 Sep '18

Dear all We are very happily running a hyperconverged gluster ovirt setup since beginning of 2016. Because we couldn't afford 3 well-equipped servers, we've set-up replica 3 with one arbiter gluster cluster. Back then the gluster integration in oVirt wasn't where it is today. We did not add the arbiter node to oVirt. Since then a lot changed and we suspect that from time to time we run into problems because we haven't added the arbiter node as a host to oVirt. We also think that we may profit from features and higher visibility in oVirt when it is aware of all gluster nodes. Now, we are thinking of adding the third, the arbiter host. Today we are using oVirt 4.2.0.2 and GlusterFS 3.12 on CentOS 7.4. We see two ways to accomplish this: 1) Add it as a new host 2) Import it as the discovered host in Compute >> Clusters >> OurCluster The questions we have: * First of all, is this a good idea anyway? * Do we need to install vdsmd on the arbiter node? * What is or is there difference between the two ways? Will it discover the gluster configuration or break it? Before we break it we would love to hear what you guys think. Thanks a lot Simon

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Re: Adding arbiter to hyperconverged setup
by smirta＠gmx.net 27 Sep '18

27 Sep '18

I think I've just found the answer myself: https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.3/h… https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.4/h… But any inputs to my previous questions are still very welcome.

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Ovirt attach serial port on VM
by Alex K 27 Sep '18

27 Sep '18

Hi all, I have a serial port on one of the servers where the guest VM is running. setserial -g /dev/ttyS0 /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4 I wanted the serial port to be connected at the VM, so as the VM to be able to use directly the serial port of the server. Thus I went at host devices to add the port but I am not able to find it, as the serial port is not listed at PCI devices. I recall that on plain KVM one could be able to attach such a serial port at a guest VM. Has anyone been able to attach a serial port to a guest VM woth ovirt? (I am running 4.2.5) Thanx, Alex

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LDAP-Error
by Budur Nagaraju 27 Sep '18

27 Sep '18

Hi Have configured LDAP authentication in oVirt4.2, but unable to login facing issues below is the error log and configuration, able to search the users in the UI at same time unable to search the Group. Can someone help on the same? Error : https://pastebin.com/76cZdV7d Configuration: https://pastebin.com/nRmibZh7 Thanks, Nagaraju

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migrate ovirt-engine to Self-hosted Engine
by Edoardo Mazza 27 Sep '18

27 Sep '18

Hi all, my enviroment is composed to a standalone ovirt-engine and 3 host. I would migrate my ovirt-engine to a self-hosted Engine enviroment, but I don't found any guide for this procedure. Con you help me? Thank

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New Facebook Group - Virtualization HQ (oVirt, KVM, Xen, Linux HA Clusters)
by Andrei Verovski 26 Sep '18

26 Sep '18

Hi, I just created new Facebook group dedicated to virtualization and clustering solution(s) based on oVirt, KVM, Xen, Linux HA Clusters. Everyone here is welcome: https://www.facebook.com/groups/227612258112186/ Group rules: Allowed posts: tips and tricks from experts, technical questions and requests for both volunteer and paid support. Posts require prior approval: 1) Commercial services offered (only related to this group subject), with the exception of replies to paid requests for technical support from other group members. 2) Job offers / job seekers. 3) Sale of hardware owned by group members (not dealers / resellers). Classifieds from resellers of server hardware - new, used, surplus, and refurbished may be SOMETIMES allowed with prior approval (without $$$ fee), if represent an exceptional value of interest for group members. with best regards Andrei

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Convert HDD to Thin
by Budur Nagaraju 26 Sep '18

26 Sep '18

Hi Am using oVirt 3.5 , and mapped 1.5TB if LUN from Dell Unity have deployed 50 vms in that lun , when I check the allocated space in storage its showing 800GB in storage whereas in oVirt its showing 1.4TB in oVirt . Is there any way to shrink the same in oVirt ? Thanks, Nagaraju

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