[Xymon] Most number of hosts

[wbeauchaine]

hi nico

how did you setup your hobbit cluster ? hearbeat/pacemaker + drdb , 
corosync/pacemaker + drdb, keapalived/opensvc + lvm ?

Regards,
Wilfrid :)



Le 2012-05-22 20:46, Nico a écrit :
> Hi Michael
>
> Here we are monitoring > 10 000 hosts over 18 hobbit clusters (1
> cluster per datacenter) but we have one cluster with > 3600 hosts:
>
> Hardware is
>
> HP DL380 G7
> 2 x Xeon X5650
> RAID 1 for OS
> RAID 5 for data with 4 SSD hard drives (165Gb) for xymon data.
> 8 Gb RAM.
>
> xymongen:
>
> Statistics:
>  Hosts : 3692
>  Pages : 497
>  Status messages : 46298
>  - Red : 318 ( 0.69 %)
>  - Red (non-propagating) : 0 ( 0.00 %)
>  - Yellow : 347 ( 0.75 %)
>  - Yellow (non-propagating) : 0 ( 0.00 %)
>  - Clear : 902 ( 1.95 %)
>  - Green : 43537 (94.04 %)
>  - Purple : 82 ( 0.18 %)
>  - Blue : 1112 ( 2.40 %)
>
> xymonnet:
>
> Statistics:
>  Hosts total : 3660
>  Hosts with no tests : 5
>  Total test count : 9645
>  Status messages : 10034
>  Alert status msgs : 0
>  Transmissions : 332
>
> DNS statistics:
>  # hostnames resolved : 1763
>  # succesful : 628
>  # failed : 6
>  # calls to dnsresolve : 1727
>
> TCP test statistics:
>  # TCP tests total : 5993
>  # HTTP tests : 2222
>  # Simple TCP tests : 3771
>  # Connection attempts : 5993
>  # bytes written : 376789
>  # bytes read : 25004690
>
> [root at xxxxxxxx:/opt/xymon/server/etc/hosts.d/customer ] 21 grep -c
> proc /proc/cpuinfo
> 24
>
> load average: 2.03, 1.97, 2.00
>
> CPU %idle average: 90% !!!
>
> you can have many hosts; but i think the most important things is the
> number of check per hosts and the external scripts running on your
> xymon server. (oracle check; backup check, reporting, etc) which
> increases the load.
>
> Having SSD is a good option because in the past, the main load was 
> I/O
> wait.
>
> Cheers
> Nico
>
> Le 22 mai 2012 à 20:11, <greg.shea at emc.com [5]> a écrit :
>
>> Hi Michael,
>>
>> At one point, I had 6115 hosts running from 1 physical Xymon server.
>> Some tests, specifically WebLogic, I run from a
>> separate VM so if the java process hangs, it doesn't affect the main
>> Xymon server.
>> Physical HW
>> Dell PE 2950
>> 2 Xeon 5110 CPUs
>> 8GB RAM
>> 2 146GB, 10K RPM SAS (RAID1 root disk)
>> 2 146GB. 15K RPM SAS (apps & data)
>> Red Hat Enterprise Linux AS release 4 (Nahant Update 7)
>> Xymon 4.3.4
>>
>> That's all changing now because of the push to virtualize
>> everything, so I used the opportunity to build in some redundancy.
>> Currently we have 2750 hosts running in this environment and will be
>> migrating the rest of the old server over before EOY.
>> Primary and standby VMs
>> 2 Virtual Xeon E7549 CPUs
>> 8GB RAM
>> 120GB root disk and 200GB apps disk
>> Red Hat Enterprise Linux Server release 5.5 (Tikanga)
>> Xymon 4.3.7
>>
>> Primary and standby external test VMs (WebLogic, custom tests)
>> (same as above)
>>
>> -----Original Message-----
>> From: xymon-bounces at xymon.com [1] [mailto:xymon-bounces at xymon.com]
>> On Behalf Of Michael Beatty
>> Sent: Tuesday, May 22, 2012 1:01 PM
>> To: xymon at xymon.com [2]
>> Subject: [Xymon] Most number of hosts
>>
>> Is there any close proximity number available as to how many clients
>> Xymon can handle? I've seen in the wiki pages that one user is
>> advertising over 10,000 however, that seems to be in a "clustered"
>> setting. I see a few more users suggesting over 2,000. My concern
>> lies in that my plans stand at some where in the middle of that, and
>> also, there really is no gauge as to what hardware and network
>> topology those systems are running.
>>
>> My environment will be in the ball park of about 5,000 systems and
>> many of them are on satellite bands with some latency concerns,
>> pings tests come back at around 3 seconds.
>>
>> I'm hoping to get some confidence that going into this project, I'm
>> not going to be hit with a realization that Xymon simply cannot
>> handle this type of environment. Its a lot of research and
>> development that I would be flushing down the drain. I do have
>> experience with my previous organization where we monitored about
>> 1500 clients under the Hobbit project.... so I know the
>> capabilities... I just don't know what the boundaries are.
>>
>> --
>> Michael Beatty
>> Sherwin-Williams
>> IT Analyst/Developer
>> michael.beatty at sherwin.com [3]
>> 216-515-7374
>>
>> _______________________________________________
>> Xymon mailing list
>> Xymon at xymon.com [4]
>> http://lists.xymon.com/mailman/listinfo/xymon
>>
>> _______________________________________________
>> Xymon mailing list
>> Xymon at xymon.com
>> http://lists.xymon.com/mailman/listinfo/xymon
>
>
>
> Links:
> ------
> [1] mailto:xymon-bounces at xymon.com
> [2] mailto:xymon at xymon.com
> [3] mailto:michael.beatty at sherwin.com
> [4] mailto:Xymon at xymon.com
> [5] mailto:greg.shea at emc.com