[ClusterLabs] Antw: Re: Never join a list without a problem...
Jeffrey Westgate
Jeffrey.Westgate at arkansas.gov
Wed Mar 8 22:15:40 CET 2017
Just for grins and giggles (I need some of both right now) I just updated to SL6.8.
We'll see what's what now. That's EVERYTHING changed.
________________________________________
From: Jeffrey Westgate
Sent: Wednesday, March 08, 2017 12:13 PM
To: users at clusterlabs.org
Subject: Re: Antw: Re: Never join a list without a problem...
yes - at least I think this is all the packages. (What I did was run a yum update -y, for the most part - had to do pacemaker separately -- had to stop it, update it, start it.)
now, is it possible I'm missing a needed package after the update... but dependencies should have handled that....?
[root at resolver-lb3 log]# yum list resource-agents\* ccs\* pcs\* cman\* keepalive\* corosync\* pacemaker\*
Loaded plugins: fastestmirror, refresh-packagekit
Loading mirror speeds from cached hostfile
* epel: fedora-epel.mirror.lstn.net
* sl: ftp.scientificlinux.org
* sl-security: ftp.scientificlinux.org
Installed Packages
ccs.x86_64 0.16.2-75.el6_6.1 installed
cman.x86_64 3.0.12.1-59.el6 @sl
corosync.x86_64 1.4.1-17.el6 @sl
corosynclib.x86_64 1.4.1-17.el6 @sl
keepalived.x86_64 1.2.7-3.el6 @sl
pacemaker.x86_64 1.1.14-8.el6_8.2 @sl-security
pacemaker-cli.x86_64 1.1.14-8.el6_8.2 @sl-security
pacemaker-cluster-libs.x86_64 1.1.14-8.el6_8.2 @sl-security
pacemaker-libs.x86_64 1.1.14-8.el6_8.2 @sl-security
pcs.x86_64 0.9.139-9.el6_7.1 installed
resource-agents.x86_64 3.9.2-40.el6 @sl
Available Packages
corosynclib.i686 1.4.1-17.el6 sl
corosynclib-devel.i686 1.4.1-17.el6 sl
corosynclib-devel.x86_64 1.4.1-17.el6 sl
pacemaker-cluster-libs.i686 1.1.14-8.el6_8.2 sl-security
pacemaker-cts.x86_64 1.1.14-8.el6_8.2 sl-security
pacemaker-doc.x86_64 1.1.14-8.el6_8.2 sl-security
pacemaker-libs.i686 1.1.14-8.el6_8.2 sl-security
pacemaker-libs-devel.i686 1.1.14-8.el6_8.2 sl-security
pacemaker-libs-devel.x86_64 1.1.14-8.el6_8.2 sl-security
pacemaker-remote.x86_64 1.1.14-8.el6_8.2 sl-security
pcs.noarch 0.9.90-2.el6 sl
resource-agents-sap.x86_64 3.9.2-40.el6 sl
________________________________________
------------------------------
Message: 2
Date: Wed, 8 Mar 2017 10:40:49 -0600
From: Ken Gaillot <kgaillot at redhat.com>
To: users at clusterlabs.org
Subject: Re: [ClusterLabs] Antw: Re: Never join a list without a
problem...
Message-ID: <408c0af6-3831-5e7a-f1dd-37dcbfb0f0a7 at redhat.com>
Content-Type: text/plain; charset=windows-1252
On 03/08/2017 09:58 AM, Jeffrey Westgate wrote:
> Ok.
>
> Been running monit for a few days, and atop (running a script to capture an atop output every 10 seconds for an hour, rotate the log, and do it again; runs from midnight to midnight, changes the date, and does it again). I correlate between the atop logs, nagios alerts, and monit, to try to find a trigger. Like trying to find a particular snowflake in Alaska in January.
>
> Have had a handful of episodes with all the monitors running. We have determined nothing. Nothing significantly changes from normal/regular to high host load.
>
> It's a VMWare/ESXi-hosted VM, so we moved it to a different host and different datastore (so, effectively new CPU, memory, nic, disk, video... basically all "new" hardware. still have episodes.
>
> Was running the "VMWare provided" vmtools. removed and replaced with open-vm-tools this morning. just had another episode.
>
> was running atop interactively when the episode started - the only thing that seems to change is the hostload goes up. momentary spike in "avio" for the disk -- all the way up to 25 msecs. lasted for one ten-second slice from atop.
>
> no zombies, no wait, no spike in network, transport, mem use, disk reads/writes... nothing I can see (and by I, I mean "we" as we have three people looking)
>
> I've got other boxes running the same OS - updated them at the same time, so patch level is all same. No similar issues. The only thing I have different is these two are running pacemaker, corosync, keepalived. maybe when they were updated, they need a library I don't have?
>
> running /usr/sbin/iotop -obtqqq > /var/log/iotop.log -- no red flags there. so - not OS, not IO, not hardware (virtual as it is...) ... only leaves software.
>
> Maybe pacemaker is just incompatible with:
>
> Scientific Linux release 6.5 (Carbon)
> kernel 2.6.32-642.15.1.el6.x86_64
>
> ??
That does sound bizarre. I haven't tried 6.5 in a while, but it's
certainly compatible with the current 6.8.
IIRC, you updated to the 6.8 pacemaker packages ... Did you also update
the OS and/or other cluster-related packages to 6.8?
> At this point it's more of a curiosity than an out and out problem, as performance does not seem to be impacted noticeably. Packet-in, packet-out seems unperturbed. Same cannot be said for us administrators...
>
>
>
>
> ________________________________________
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> Sent: Friday, March 03, 2017 7:27 AM
> To: users at clusterlabs.org
> Subject: Users Digest, Vol 26, Issue 10
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> 1. Q: cluster-dlm[4494]: setup_cpg_daemon: daemon cpg_join error
> retrying (Ulrich Windl)
> 2. Re: Q: cluster-dlm[4494]: setup_cpg_daemon: daemon cpg_join
> error retrying (emmanuel segura)
> 3. Antw: Re: Never join a list without a problem...
> (Jeffrey Westgate)
>
>
> ----------------------------------------------------------------------
>
> ------------------------------
>
> Message: 3
> Date: Fri, 3 Mar 2017 13:27:25 +0000
> From: Jeffrey Westgate <Jeffrey.Westgate at arkansas.gov>
> To: "users at clusterlabs.org" <users at clusterlabs.org>
> Subject: [ClusterLabs] Antw: Re: Never join a list without a
> problem...
> Message-ID:
> <A36B14FA9AA67F4E836C0EE59DEA89C4015B214305 at CM-SAS-MBX-07.sas.arkgov.net>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Appreciate the offer - not familiar with monit.
>
> Going to try running atop through logratate for the day, keep 12, rotate hourly (to control space utilization) and see if I can catch anything that way. My biggest issue is we've not caught it as it starts, so we don't ever see anything amiss.
>
> If this doesn't work, then I will likely take you up on how to script monit to catch something.
>
> Thanks --
>
> Jeff
> ________________________________________
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 2 Mar 2017 16:32:02 +0000
> From: Jeffrey Westgate <Jeffrey.Westgate at arkansas.gov>
> To: Adam Spiers <aspiers at suse.com>, "Cluster Labs - All topics related
> to open-source clustering welcomed" <users at clusterlabs.org>
> Subject: Re: [ClusterLabs] Never join a list without a problem...
> Message-ID:
> <A36B14FA9AA67F4E836C0EE59DEA89C4015B212CD5 at CM-SAS-MBX-07.sas.arkgov.net>
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Since we have both pieces of the load-balanced cluster doing the same thing - for still-as-yet unidentified reasons - we've put atop on one and sysdig on the other. Running atop at 10 second slices, hoping it will catch something. While configuring it yesterday, that server went into it's 'episode', but there was nothing in the atop log to show anything. Nothing else changed except the cpu load average. No increase in any other parameter.
>
> frustrating.
>
>
> ________________________________________
> From: Adam Spiers [aspiers at suse.com]
> Sent: Wednesday, March 01, 2017 5:33 AM
> To: Cluster Labs - All topics related to open-source clustering welcomed
> Cc: Jeffrey Westgate
> Subject: Re: [ClusterLabs] Never join a list without a problem...
>
> Ferenc W?gner <wferi at niif.hu> wrote:
>> Jeffrey Westgate <Jeffrey.Westgate at arkansas.gov> writes:
>>
>>> We use Nagios to monitor, and once every 20 to 40 hours - sometimes
>>> longer, and we cannot set a clock by it - while the machine is 95%
>>> idle (or more according to 'top'), the host load shoots up to 50 or
>>> 60%. It takes about 20 minutes to peak, and another 30 to 45 minutes
>>> to come back down to baseline, which is mostly 0.00. (attached
>>> hostload.pdf) This happens to both machines, randomly, and is
>>> concerning, as we'd like to find what's causing it and resolve it.
>>
>> Try running atop (http://www.atoptool.nl/). It collects and logs
>> process accounting info, allowing you to step back in time and check
>> resource usage in the past.
>
> Nice, I didn't know atop could also log the collected data for future
> analysis.
>
> If you want to capture even more detail, sysdig is superb:
>
> http://www.sysdig.org/
>
> ------------------------------
>
> Message: 5
> Date: Fri, 03 Mar 2017 08:04:22 +0100
> From: "Ulrich Windl" <Ulrich.Windl at rz.uni-regensburg.de>
> To: <users at clusterlabs.org>
> Subject: [ClusterLabs] Antw: Re: Never join a list without a
> problem...
> Message-ID: <58B91576020000A100024E71 at gwsmtp1.uni-regensburg.de>
> Content-Type: text/plain; charset=UTF-8
>
>>>> Jeffrey Westgate <Jeffrey.Westgate at arkansas.gov> schrieb am 02.03.2017 um
> 17:32
> in Nachricht
> <A36B14FA9AA67F4E836C0EE59DEA89C4015B212CD5 at CM-SAS-MBX-07.sas.arkgov.net>:
>> Since we have both pieces of the load-balanced cluster doing the same thing
> -
>> for still-as-yet unidentified reasons - we've put atop on one and sysdig on
> the
>> other. Running atop at 10 second slices, hoping it will catch something.
>> While configuring it yesterday, that server went into it's 'episode', but
>> there was nothing in the atop log to show anything. Nothing else changed
>> except the cpu load average. No increase in any other parameter.
>>
>> frustrating.
>
> Hi!
>
> You could try the monit-approach (I could provide an RPM with a
> "recent-enough" monit compiled for SLES11 SP4 (x86-64) if you need it).
>
> The part that monitors unusual load looks like this here:
> check system host.domain.org
> if loadavg (1min) > 8 then exec "/var/lib/monit/log-top.sh"
> if loadavg (5min) > 4 then exec "/var/lib/monit/log-top.sh"
> if loadavg (15min) > 2 then exec "/var/lib/monit/log-top.sh"
> if memory usage > 90% for 2 cycles then exec "/var/lib/monit/log-top.sh"
> if swap usage > 25% for 2 cycles then exec "/var/lib/monit/log-top.sh"
> if swap usage > 50% then exec "/var/lib/monit/log-top.sh"
> if cpu usage > 99% for 15 cycles then alert
> if cpu usage (user) > 90% for 30 cycles then alert
> if cpu usage (system) > 20% for 2 cycles then exec
> "/var/lib/monit/log-top.s
> h"
> if cpu usage (wait) > 80% then exec "/var/lib/monit/log-top.sh"
> group local
> ### all numbers are a matter of taste ;-)
> And my script (in lack of better ideas) looks like this:
> #!/bin/sh
> {
> echo "========== $(/bin/date) =========="
> /usr/bin/mpstat
> echo "---"
> /usr/bin/vmstat
> echo "---"
> /usr/bin/top -b -n 1 -Hi
> } >> /var/log/monit/top.log
>
> Regards,
> Ulrich
>
>>
>>
>> ________________________________________
>> From: Adam Spiers [aspiers at suse.com]
>> Sent: Wednesday, March 01, 2017 5:33 AM
>> To: Cluster Labs - All topics related to open-source clustering welcomed
>> Cc: Jeffrey Westgate
>> Subject: Re: [ClusterLabs] Never join a list without a problem...
>>
>> Ferenc W?gner <wferi at niif.hu> wrote:
>>> Jeffrey Westgate <Jeffrey.Westgate at arkansas.gov> writes:
>>>
>>>> We use Nagios to monitor, and once every 20 to 40 hours - sometimes
>>>> longer, and we cannot set a clock by it - while the machine is 95%
>>>> idle (or more according to 'top'), the host load shoots up to 50 or
>>>> 60%. It takes about 20 minutes to peak, and another 30 to 45 minutes
>>>> to come back down to baseline, which is mostly 0.00. (attached
>>>> hostload.pdf) This happens to both machines, randomly, and is
>>>> concerning, as we'd like to find what's causing it and resolve it.
>>>
>>> Try running atop (http://www.atoptool.nl/). It collects and logs
>>> process accounting info, allowing you to step back in time and check
>>> resource usage in the past.
>>
>> Nice, I didn't know atop could also log the collected data for future
>> analysis.
>>
>> If you want to capture even more detail, sysdig is superb:
>>
>> http://www.sysdig.org/
>>
>> _______________________________________________
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>> http://lists.clusterlabs.org/mailman/listinfo/users
>>
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>
>
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