Re: [ovirt-users] Communication errors between engine and nodes?
So, in my case, I'm wondering if maybe there is some kind of weird network issue happening. The node that seems to be showing up most for the last day or two is one of the two nodes running the hosted-engine HA, and is _not_ currently hosting the engine. It seems that, at the same time the engine has trouble communicating with that node, the hosted-engine HA running on that node has trouble seeing the engine. I still can't find any actual network problem. Using another physical system, I ran fping to all the nodes and the engine with a 0.2 second interval, and that didn't show any problem (I ran it until I also saw an instance of the engine-node communication error). I'm watching ARP traffic now to see if something is sending bad answers. I'm pretty stumped at this point of what to look at next. -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
Hello! FYI: updated 2 days ago 3 hypervisor from my setup to latest 3.5-patternfly , rebooted nodes, and engine and the error seems to be gone: no longer got heartbeat exeeded. On Tue, Mar 17, 2015 at 11:58 AM, Piotr Kliczewski piotr.kliczew...@gmail.com wrote: Hi Roel, You can change this setting in two ways. - you can update it in db directly as you stated (not recommended) - use engine-config -s vdsHeartbeatInSeconds=20 but prior to running this command you need to update config file /etc/ovirt-engine/engine-config/engine-config.properties with vdsHeartbeatInSeconds.type=Integer. This config value is not exposed by default. Thanks, Piotr On Mon, Mar 16, 2015 at 11:18 PM, Roel de Rooy rder...@motto.nl wrote: HI Piotr, Thanks for your reply! If I would like to change the heartbeat value, do I have to update the value within the vdc_options table directly, or should this be done by another way (e.g. config file)? Regards, Roel -Oorspronkelijk bericht- Van: Piotr Kliczewski [mailto:piotr.kliczew...@gmail.com] Verzonden: maandag 16 maart 2015 12:16 Aan: Roel de Rooy CC: Michal Skrivanek; users@ovirt.org Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes? Unfortunately log entries that you copied give me almost no information about nature of your issue. There are few things that we can do to understand what is going on with your setup. Heartbeat functionality provides means to detect whether we still have connection with a host. By default heartbeat timeout is set to 10 seconds but it can be modified by setting vdsHeartbeatInSeconds. In general whenever there are no incoming responses nor heartbeat frame is not received engine will invalidate the connection and will attempt to recover. If reconnection was successful you want see any other consequences of loosing single heartbeat. I would explore stability of your network so if the network is busy or you loose network packets from time to time this kind of entries in the log are expected. You can increase heatbeat value and see whether it will work better for your env. If you confirm that your network is stable we could explore the issue further by setting debug level logging for your engine to understand exactly how the messages are processes by a host and when we receive responses. On Mon, Mar 16, 2015 at 11:34 AM, Roel de Rooy rder...@motto.nl wrote: Received the heartbeat exeeded continuously this morning (seems to be quiet again for now). VM's still continue to work correctly and the storage domains (NFS shares) are still connected and reachable on the nodes, at the exact time that this issue is happening. Contacted our network engineer to see if he could see a load increase on our network, or could see any latency, errors, etc. Unfortunately he could not detect anything yet (he is still investigating this). I have attached both the engine and vdsm logs Engine.log: 2015-03-16 10:10:10,506 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ListVDSCommand] (DefaultQuartzScheduler_Worker-45) [6d40f562] Command ListVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, vds=Host[HOST,3b87597e-081b-4c89-9b1e-cb04203259f5]) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,507 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStatusVDSCommand] (DefaultQuartzScheduler_Worker-35) [2c53103c] Command SpmStatusVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, storagePoolId = 124ae76f-8acb-412e-91cc-dff9f6ec665d) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,506 WARN [org.ovirt.vdsm.jsonrpc.client.internal.ResponseWorker] (ResponseWorker) Exception thrown during message processing 2015-03-16 10:10:10,507 WARN [org.ovirt.engine.core.vdsbroker.VdsManager] (DefaultQuartzScheduler_Worker-45) [6d40f562] Host HOST is not responding. It will stay in Connecting state for a grace period of 88 seconds and after that an attempt to fence the host will be issued. 2015-03-16 10:10:10,510 INFO [org.ovirt.engine.core.bll.storage.SetStoragePoolStatusCommand] (DefaultQuartzScheduler_Worker-35) [7e61eee] Running command: SetStoragePoolStatusCommand internal: true. Entities affected : ID: 124ae76f-8acb-412e-91cc-dff9f6ec665d Type: StoragePool 2015-03-16 10:10:10,512 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain bfa86142-6f2e-44fe-8a9c-cf4390f3b8ae status from Active to Unknown, reason : null 2015-03-16 10:10:10,513 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker
Re: [ovirt-users] Communication errors between engine and nodes?
Hi Roel, You can change this setting in two ways. - you can update it in db directly as you stated (not recommended) - use engine-config -s vdsHeartbeatInSeconds=20 but prior to running this command you need to update config file /etc/ovirt-engine/engine-config/engine-config.properties with vdsHeartbeatInSeconds.type=Integer. This config value is not exposed by default. Thanks, Piotr On Mon, Mar 16, 2015 at 11:18 PM, Roel de Rooy rder...@motto.nl wrote: HI Piotr, Thanks for your reply! If I would like to change the heartbeat value, do I have to update the value within the vdc_options table directly, or should this be done by another way (e.g. config file)? Regards, Roel -Oorspronkelijk bericht- Van: Piotr Kliczewski [mailto:piotr.kliczew...@gmail.com] Verzonden: maandag 16 maart 2015 12:16 Aan: Roel de Rooy CC: Michal Skrivanek; users@ovirt.org Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes? Unfortunately log entries that you copied give me almost no information about nature of your issue. There are few things that we can do to understand what is going on with your setup. Heartbeat functionality provides means to detect whether we still have connection with a host. By default heartbeat timeout is set to 10 seconds but it can be modified by setting vdsHeartbeatInSeconds. In general whenever there are no incoming responses nor heartbeat frame is not received engine will invalidate the connection and will attempt to recover. If reconnection was successful you want see any other consequences of loosing single heartbeat. I would explore stability of your network so if the network is busy or you loose network packets from time to time this kind of entries in the log are expected. You can increase heatbeat value and see whether it will work better for your env. If you confirm that your network is stable we could explore the issue further by setting debug level logging for your engine to understand exactly how the messages are processes by a host and when we receive responses. On Mon, Mar 16, 2015 at 11:34 AM, Roel de Rooy rder...@motto.nl wrote: Received the heartbeat exeeded continuously this morning (seems to be quiet again for now). VM's still continue to work correctly and the storage domains (NFS shares) are still connected and reachable on the nodes, at the exact time that this issue is happening. Contacted our network engineer to see if he could see a load increase on our network, or could see any latency, errors, etc. Unfortunately he could not detect anything yet (he is still investigating this). I have attached both the engine and vdsm logs Engine.log: 2015-03-16 10:10:10,506 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ListVDSCommand] (DefaultQuartzScheduler_Worker-45) [6d40f562] Command ListVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, vds=Host[HOST,3b87597e-081b-4c89-9b1e-cb04203259f5]) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,507 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStatusVDSCommand] (DefaultQuartzScheduler_Worker-35) [2c53103c] Command SpmStatusVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, storagePoolId = 124ae76f-8acb-412e-91cc-dff9f6ec665d) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,506 WARN [org.ovirt.vdsm.jsonrpc.client.internal.ResponseWorker] (ResponseWorker) Exception thrown during message processing 2015-03-16 10:10:10,507 WARN [org.ovirt.engine.core.vdsbroker.VdsManager] (DefaultQuartzScheduler_Worker-45) [6d40f562] Host HOST is not responding. It will stay in Connecting state for a grace period of 88 seconds and after that an attempt to fence the host will be issued. 2015-03-16 10:10:10,510 INFO [org.ovirt.engine.core.bll.storage.SetStoragePoolStatusCommand] (DefaultQuartzScheduler_Worker-35) [7e61eee] Running command: SetStoragePoolStatusCommand internal: true. Entities affected : ID: 124ae76f-8acb-412e-91cc-dff9f6ec665d Type: StoragePool 2015-03-16 10:10:10,512 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain bfa86142-6f2e-44fe-8a9c-cf4390f3b8ae status from Active to Unknown, reason : null 2015-03-16 10:10:10,513 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain 178a38d9-245c-43d3-bff9-6f3a5983bf03 status from Active to Unknown, reason : null 2015-03-16 10:10:10,514 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool
Re: [ovirt-users] Communication errors between engine and nodes?
[org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand]
(DefaultQuartzScheduler_Worker-44) [64352136] FINISH,
ConnectStorageServerVDSCommand, return:
{6ca291fc-0a20-4047-9aac-9d166a4c5300=0,
65744a96-5f4c-4d5f-898b-932eaf97084c=0,
03ea1ab7-e96c-410b-911e-905e988b0dc7=0}, log id: 5369ca8f
Corresponding vdsm.log: (these are the only lines around the same timeframe):
Thread-52::DEBUG::2015-03-16
10:10:10,977::task::595::Storage.TaskManager.Task::(_updateState)
Task=`89a0021d-9d5a-4563-ad44-d320aacbc551`::moving from state init - state
preparing
JsonRpc (StompReactor)::DEBUG::2015-03-16
10:10:10,982::stompReactor::98::Broker.StompAdapter::(handle_frame) Handling
message StompFrame command='SEND'
Thread-52::INFO::2015-03-16 10:10:10,983::logUtils::44::dispatcher::(wrapper)
Run and protect:
getVolumeSize(sdUUID=u'178a38d9-245c-43d3-bff9-6f3a5983bf03',
spUUID=u'124ae76f-8acb-412e-91cc-dff9f6ec665d',
imgUUID=u'fb58d38b-9965-40f3-af45-915a4968a3aa',
volUUID=u'0c28ab0e-b1a0-42b6-8eac-71de1faa6827', options=None)
Thread-27::DEBUG::2015-03-16
10:10:10,985::fileSD::261::Storage.Misc.excCmd::(getReadDelay) /usr/bin/dd
if=/rhev/data-center/mnt/IP:_mnt_storage/178a38d9-245c-43d3-bff9-6f3a5983bf03/dom_md/metadata
iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
-Oorspronkelijk bericht-
Van: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] Namens Piotr
Kliczewski
Verzonden: 16 March 2015 08:39
Aan: Michal Skrivanek
CC: users@ovirt.org
Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes?
Can you please provide logs from both ends?
On Fri, Mar 13, 2015 at 3:17 PM, Michal Skrivanek
michal.skriva...@redhat.com wrote:
On 13 Mar 2015, at 14:39, Chris Adams wrote:
Once upon a time, Roel de Rooy rder...@motto.nl said:
We are observing the same thing with our oVirt environment.
At random moments (could be a couple of times a day , once a day or even
once every couple of days), we receive the VDSNetworkException message
on one of our nodes.
Haven't seen the heartbeat exceeded message, but could be that I
overlooked it within our logs.
At some rare occasions, we also do see Host cannot access the Storage
Domain(s) UNKNOWN attached to the Data Center, within the GUI.
VM's will continue to run normally and most of the times the nodes will be
in UP state again within the same minute.
Will still haven't found the root cause of this issue.
Our engine is CentOS 6.6 based and it's happing with both Centos 6 and
Fedora 20 nodes.
We are using a LCAP bond of 1Gbit ports for our management network.
As we didn't see any reports about this before, we are currently looking
if something network related is causing this.
I just opened a BZ on it (since it isn't just me):
https://bugzilla.redhat.com/show_bug.cgi?id=1201779
My cluster went a couple of days without hitting this (as soon as I
posted to the list of course), but then it happened several times
overnight. Interestingly, one error logged was communicating with
the node currently running my hosted engine. That should rule out
external network (e.g. switch and such) issues, as those packets
should not have left the physical box.
well, hosted engine complicates things as you'd need to be able to see
the status of the engine guest running a standalone engine installation or
at least running that hosted engine on a single node without any other VM
may help….
Thanks,
michal
--
Chris Adams c...@cmadams.net
___
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Re: [ovirt-users] Communication errors between engine and nodes?
...@ovirt.org [mailto:users-boun...@ovirt.org] Namens Piotr Kliczewski Verzonden: 16 March 2015 08:39 Aan: Michal Skrivanek CC: users@ovirt.org Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes? Can you please provide logs from both ends? On Fri, Mar 13, 2015 at 3:17 PM, Michal Skrivanek michal.skriva...@redhat.com wrote: On 13 Mar 2015, at 14:39, Chris Adams wrote: Once upon a time, Roel de Rooy rder...@motto.nl said: We are observing the same thing with our oVirt environment. At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the VDSNetworkException message on one of our nodes. Haven't seen the heartbeat exceeded message, but could be that I overlooked it within our logs. At some rare occasions, we also do see Host cannot access the Storage Domain(s) UNKNOWN attached to the Data Center, within the GUI. VM's will continue to run normally and most of the times the nodes will be in UP state again within the same minute. Will still haven't found the root cause of this issue. Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes. We are using a LCAP bond of 1Gbit ports for our management network. As we didn't see any reports about this before, we are currently looking if something network related is causing this. I just opened a BZ on it (since it isn't just me): https://bugzilla.redhat.com/show_bug.cgi?id=1201779 My cluster went a couple of days without hitting this (as soon as I posted to the list of course), but then it happened several times overnight. Interestingly, one error logged was communicating with the node currently running my hosted engine. That should rule out external network (e.g. switch and such) issues, as those packets should not have left the physical box. well, hosted engine complicates things as you'd need to be able to see the status of the engine guest running a standalone engine installation or at least running that hosted engine on a single node without any other VM may help…. Thanks, michal -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
HI Piotr, Thanks for your reply! If I would like to change the heartbeat value, do I have to update the value within the vdc_options table directly, or should this be done by another way (e.g. config file)? Regards, Roel -Oorspronkelijk bericht- Van: Piotr Kliczewski [mailto:piotr.kliczew...@gmail.com] Verzonden: maandag 16 maart 2015 12:16 Aan: Roel de Rooy CC: Michal Skrivanek; users@ovirt.org Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes? Unfortunately log entries that you copied give me almost no information about nature of your issue. There are few things that we can do to understand what is going on with your setup. Heartbeat functionality provides means to detect whether we still have connection with a host. By default heartbeat timeout is set to 10 seconds but it can be modified by setting vdsHeartbeatInSeconds. In general whenever there are no incoming responses nor heartbeat frame is not received engine will invalidate the connection and will attempt to recover. If reconnection was successful you want see any other consequences of loosing single heartbeat. I would explore stability of your network so if the network is busy or you loose network packets from time to time this kind of entries in the log are expected. You can increase heatbeat value and see whether it will work better for your env. If you confirm that your network is stable we could explore the issue further by setting debug level logging for your engine to understand exactly how the messages are processes by a host and when we receive responses. On Mon, Mar 16, 2015 at 11:34 AM, Roel de Rooy rder...@motto.nl wrote: Received the heartbeat exeeded continuously this morning (seems to be quiet again for now). VM's still continue to work correctly and the storage domains (NFS shares) are still connected and reachable on the nodes, at the exact time that this issue is happening. Contacted our network engineer to see if he could see a load increase on our network, or could see any latency, errors, etc. Unfortunately he could not detect anything yet (he is still investigating this). I have attached both the engine and vdsm logs Engine.log: 2015-03-16 10:10:10,506 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ListVDSCommand] (DefaultQuartzScheduler_Worker-45) [6d40f562] Command ListVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, vds=Host[HOST,3b87597e-081b-4c89-9b1e-cb04203259f5]) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,507 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStatusVDSCommand] (DefaultQuartzScheduler_Worker-35) [2c53103c] Command SpmStatusVDSCommand(HostName = HOST, HostId = 3b87597e-081b-4c89-9b1e-cb04203259f5, storagePoolId = 124ae76f-8acb-412e-91cc-dff9f6ec665d) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded 2015-03-16 10:10:10,506 WARN [org.ovirt.vdsm.jsonrpc.client.internal.ResponseWorker] (ResponseWorker) Exception thrown during message processing 2015-03-16 10:10:10,507 WARN [org.ovirt.engine.core.vdsbroker.VdsManager] (DefaultQuartzScheduler_Worker-45) [6d40f562] Host HOST is not responding. It will stay in Connecting state for a grace period of 88 seconds and after that an attempt to fence the host will be issued. 2015-03-16 10:10:10,510 INFO [org.ovirt.engine.core.bll.storage.SetStoragePoolStatusCommand] (DefaultQuartzScheduler_Worker-35) [7e61eee] Running command: SetStoragePoolStatusCommand internal: true. Entities affected : ID: 124ae76f-8acb-412e-91cc-dff9f6ec665d Type: StoragePool 2015-03-16 10:10:10,512 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain bfa86142-6f2e-44fe-8a9c-cf4390f3b8ae status from Active to Unknown, reason : null 2015-03-16 10:10:10,513 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain 178a38d9-245c-43d3-bff9-6f3a5983bf03 status from Active to Unknown, reason : null 2015-03-16 10:10:10,514 INFO [org.ovirt.engine.core.vdsbroker.storage.StoragePoolDomainHelper] (DefaultQuartzScheduler_Worker-35) [7e61eee] Storage Pool 124ae76f-8acb-412e-91cc-dff9f6ec665d - Updating Storage Domain 3b0b4f26-bec9-4730-a8ba-40965a228932 status from Active to Unknown, reason : null 2015-03-16 10:10:10,526 WARN [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-45) [6d40f562] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: Host HOST is not responding. It will stay in Connecting state for a grace period
Re: [ovirt-users] Communication errors between engine and nodes?
Can you please provide logs from both ends? On Fri, Mar 13, 2015 at 3:17 PM, Michal Skrivanek michal.skriva...@redhat.com wrote: On 13 Mar 2015, at 14:39, Chris Adams wrote: Once upon a time, Roel de Rooy rder...@motto.nl said: We are observing the same thing with our oVirt environment. At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the VDSNetworkException message on one of our nodes. Haven't seen the heartbeat exceeded message, but could be that I overlooked it within our logs. At some rare occasions, we also do see Host cannot access the Storage Domain(s) UNKNOWN attached to the Data Center, within the GUI. VM's will continue to run normally and most of the times the nodes will be in UP state again within the same minute. Will still haven't found the root cause of this issue. Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes. We are using a LCAP bond of 1Gbit ports for our management network. As we didn't see any reports about this before, we are currently looking if something network related is causing this. I just opened a BZ on it (since it isn't just me): https://bugzilla.redhat.com/show_bug.cgi?id=1201779 My cluster went a couple of days without hitting this (as soon as I posted to the list of course), but then it happened several times overnight. Interestingly, one error logged was communicating with the node currently running my hosted engine. That should rule out external network (e.g. switch and such) issues, as those packets should not have left the physical box. well, hosted engine complicates things as you'd need to be able to see the status of the engine guest running a standalone engine installation or at least running that hosted engine on a single node without any other VM may help…. Thanks, michal -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
We are observing the same thing with our oVirt environment. At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the VDSNetworkException message on one of our nodes. Haven't seen the heartbeat exceeded message, but could be that I overlooked it within our logs. At some rare occasions, we also do see Host cannot access the Storage Domain(s) UNKNOWN attached to the Data Center, within the GUI. VM's will continue to run normally and most of the times the nodes will be in UP state again within the same minute. Will still haven't found the root cause of this issue. Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes. We are using a LCAP bond of 1Gbit ports for our management network. As we didn't see any reports about this before, we are currently looking if something network related is causing this. -Oorspronkelijk bericht- Van: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] Namens Chris Adams Verzonden: 12 March 2015 14:23 Aan: users@ovirt.org Onderwerp: Re: [ovirt-users] Communication errors between engine and nodes? Once upon a time, Lior Vernia lver...@redhat.com said: If I'm not mistaken, heartbeat intervals are configured to 10 seconds by default. Okay, thanks. The command times out queries for the status of VMs on a host - any reason to suspect why that's taking long? Does it happen on specific hosts? No idea. It seemed to happen on node5 a bunch over a week, but then there were errors on other nodes as well. It isn't always Heartbeet exceeded, sometimes it is VDSNetworkException: Message timeout which can be caused by communication issues. I haven't been able to find any network issues that could cause this (no errors logged anywhere). There doesn't seem to be any pattern to when it happens either. The log entry I posted was from 04:42 local time, and a bunch of the VMs are CentOS 5, which does log rotation at 04:00 by default (which can spike the CPU and disk I/O), but they are all done long before 04:42. It happened in the middle of the afternoon a couple of days ago, while I was logged-in to the web UI, and I didn't notice any unusual behavior. One other odd thing: I have also been experiencing an issue where I randomly get logged out of the web UI. Usually nothing else was going on, but a couple of times it seemed to correspond with one of the node errors (hard to tell). It looked like the same error as BZ 1198493 (I'd see a bunch of Failed to log User null@N/A out messages). I don't know if these issues are related or that was just coincidence. To try to rule out any unseen network issues, I started an fping to all seven nodes and the engine from another physical system on the same VLAN. It is sending one ping to each of the eight hosts every 0.2 seconds. That has not shown a dropped packet since I started yesterday afternoon. However, during that time, I also have not seen any engine/vdsm timeouts. I was going to say I had not been logged out of the web UI, but that just happened while I was typing the previous sentence. -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
Once upon a time, Roel de Rooy rder...@motto.nl said: We are observing the same thing with our oVirt environment. At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the VDSNetworkException message on one of our nodes. Haven't seen the heartbeat exceeded message, but could be that I overlooked it within our logs. At some rare occasions, we also do see Host cannot access the Storage Domain(s) UNKNOWN attached to the Data Center, within the GUI. VM's will continue to run normally and most of the times the nodes will be in UP state again within the same minute. Will still haven't found the root cause of this issue. Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes. We are using a LCAP bond of 1Gbit ports for our management network. As we didn't see any reports about this before, we are currently looking if something network related is causing this. I just opened a BZ on it (since it isn't just me): https://bugzilla.redhat.com/show_bug.cgi?id=1201779 My cluster went a couple of days without hitting this (as soon as I posted to the list of course), but then it happened several times overnight. Interestingly, one error logged was communicating with the node currently running my hosted engine. That should rule out external network (e.g. switch and such) issues, as those packets should not have left the physical box. -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
On 13 Mar 2015, at 14:39, Chris Adams wrote: Once upon a time, Roel de Rooy rder...@motto.nl said: We are observing the same thing with our oVirt environment. At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the VDSNetworkException message on one of our nodes. Haven't seen the heartbeat exceeded message, but could be that I overlooked it within our logs. At some rare occasions, we also do see Host cannot access the Storage Domain(s) UNKNOWN attached to the Data Center, within the GUI. VM's will continue to run normally and most of the times the nodes will be in UP state again within the same minute. Will still haven't found the root cause of this issue. Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes. We are using a LCAP bond of 1Gbit ports for our management network. As we didn't see any reports about this before, we are currently looking if something network related is causing this. I just opened a BZ on it (since it isn't just me): https://bugzilla.redhat.com/show_bug.cgi?id=1201779 My cluster went a couple of days without hitting this (as soon as I posted to the list of course), but then it happened several times overnight. Interestingly, one error logged was communicating with the node currently running my hosted engine. That should rule out external network (e.g. switch and such) issues, as those packets should not have left the physical box. well, hosted engine complicates things as you'd need to be able to see the status of the engine guest running a standalone engine installation or at least running that hosted engine on a single node without any other VM may help…. Thanks, michal -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
If I'm not mistaken, heartbeat intervals are configured to 10 seconds by default. The command times out queries for the status of VMs on a host - any reason to suspect why that's taking long? Does it happen on specific hosts? On 11/03/15 18:40, Chris Adams wrote: Once upon a time, Chris Adams c...@cmadams.net said: 2015-03-10 04:42:23,310 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ListVDSCommand] (DefaultQuartzScheduler_Worker-40) [75b9e6d9] Command ListVDSCommand(HostName = node5, HostId = 8dfd0195-f386-4e16-9379-a5287221d5bd, vds=Host[node5,8dfd0195-f386-4e16-9379-a5287221d5bd]) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded I'm trying to dig into this some on my own (without knowing about oVirt's internals); can somebody tell me the timeout for the dispatching of commands to vdsm? I get different things happening when the engine thinks a node has gone away, but they all start with the same org.ovirt.engine.core.vdsbroker.vdsbroker bit (and have a network timeout of some type). I don't see anything in common in any of the logs at the time of the error, so I'm trying to roll back to when the request was sent (but I don't know how long it took for the engine to time out before the error was logged). ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
Once upon a time, Lior Vernia lver...@redhat.com said: If I'm not mistaken, heartbeat intervals are configured to 10 seconds by default. Okay, thanks. The command times out queries for the status of VMs on a host - any reason to suspect why that's taking long? Does it happen on specific hosts? No idea. It seemed to happen on node5 a bunch over a week, but then there were errors on other nodes as well. It isn't always Heartbeet exceeded, sometimes it is VDSNetworkException: Message timeout which can be caused by communication issues. I haven't been able to find any network issues that could cause this (no errors logged anywhere). There doesn't seem to be any pattern to when it happens either. The log entry I posted was from 04:42 local time, and a bunch of the VMs are CentOS 5, which does log rotation at 04:00 by default (which can spike the CPU and disk I/O), but they are all done long before 04:42. It happened in the middle of the afternoon a couple of days ago, while I was logged-in to the web UI, and I didn't notice any unusual behavior. One other odd thing: I have also been experiencing an issue where I randomly get logged out of the web UI. Usually nothing else was going on, but a couple of times it seemed to correspond with one of the node errors (hard to tell). It looked like the same error as BZ 1198493 (I'd see a bunch of Failed to log User null@N/A out messages). I don't know if these issues are related or that was just coincidence. To try to rule out any unseen network issues, I started an fping to all seven nodes and the engine from another physical system on the same VLAN. It is sending one ping to each of the eight hosts every 0.2 seconds. That has not shown a dropped packet since I started yesterday afternoon. However, during that time, I also have not seen any engine/vdsm timeouts. I was going to say I had not been logged out of the web UI, but that just happened while I was typing the previous sentence. -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Communication errors between engine and nodes?
Once upon a time, Chris Adams c...@cmadams.net said: 2015-03-10 04:42:23,310 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ListVDSCommand] (DefaultQuartzScheduler_Worker-40) [75b9e6d9] Command ListVDSCommand(HostName = node5, HostId = 8dfd0195-f386-4e16-9379-a5287221d5bd, vds=Host[node5,8dfd0195-f386-4e16-9379-a5287221d5bd]) execution failed. Exception: VDSNetworkException: VDSGenericException: VDSNetworkException: Heartbeat exeeded I'm trying to dig into this some on my own (without knowing about oVirt's internals); can somebody tell me the timeout for the dispatching of commands to vdsm? I get different things happening when the engine thinks a node has gone away, but they all start with the same org.ovirt.engine.core.vdsbroker.vdsbroker bit (and have a network timeout of some type). I don't see anything in common in any of the logs at the time of the error, so I'm trying to roll back to when the request was sent (but I don't know how long it took for the engine to time out before the error was logged). -- Chris Adams c...@cmadams.net ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
