Dear Adam,

If things are occasionally un-discovered by discovery, it’s likely that

you either have some network connectivity issues or you have an intervening firewall that’s doing some arbitrary filtering.

But, other VMs on the same Host are normal. It just happened randomly in a random VM. Network connectivity is normal if I see on the monitoring, there's no RTO in The Dude or PRTG (icmp monitoring).

Broken SNMP queries can cause things to be removed, because it looks like

the entities have vanished from the device.

Does observium have a log how to check the issue about this ? and how to prevent SNMP queries being broken ? because our client sometimes asks us why their RAM/CPU graphs are missing.

If I look in the log on the missing VM graph, I found this example : 2020-09-19 01:01:26 172.16.111.2 Mempools: 2 added. 2020-09-19 01:01:26 Physical Memory Memory pool added: mib HOST-RESOURCES-MIB, index 4, descr Physical Memory 2020-09-19 01:01:26 Virtual Memory Memory pool added: mib HOST-RESOURCES-MIB, index 3, descr Virtual Memory 2020-09-18 12:48:44 172.16.111.2 Mempools: 2 deleted. 2020-09-18 12:48:44 Memory pool removed: mib HOST-RESOURCES-MIB, index 4, descr Physical Memory 2020-09-18 12:48:44 Memory pool removed: mib HOST-RESOURCES-MIB, index 3, descr Virtual Memory

I've check the resource of observium server when poller cron is running and get the result below:

CPU: all 8 core Cpu > 95%

RAM 12 GB # free -m total used free shared buff/cache available Mem: 11847 1162 1368 8937 9316 1357 Swap: 8191 7275 916

After poller finished, the CPU became normal again but the RAM was still high.

Thank you.

Demikian yang dapat kami sampaikan, terimakasih.

Regards, Aulia Rahman

On Mon, Oct 12, 2020 at 7:30 PM Adam Armstrong via observium < observium@observium.org> wrote:

If things are occasionally un-discovered by discovery, it’s likely that you either have some network connectivity issues or you have an intervening firewall that’s doing some arbitrary filtering.

Broken SNMP queries can cause things to be removed, because it looks like the entities have vanished from the device.

Adam.

*From:* observium observium-bounces@observium.org *On Behalf Of *Aulia Rahman via observium *Sent:* 12 October 2020 11:06 *To:* observium@observium.org *Cc:* Aulia Rahman aul@mybati.co.id *Subject:* [Observium] Why sometime graph are missing on the dashboard ?

Dear All,

I've sometimes found that some server graph RAM / CPU / Traffic is missing on the dashboard. So, I can't view the graph at that time.

But when I check on the next time, that graph shows again.

What caused it and how to solve it ?

My detail specs:

Device Monitor: 400++ VM (various OS Linux & Windows)

CPU: 8 Core

RAM: 12 GB ( Use Ramdisk )

Storage: 500 GB on SSD

Observium 20.1.10233 (20th January 2020) OS Linux 3.10.0-514.el7.x86_64 [amd64] (CentOS 7) Apache 2.4.6 (CentOS) OpenSSL/1.0.1e-fips PHP/7.0.19 PHP 7.0.19 (OPcache: ENABLED) Python 2.7.5 MySQL 5.5.52-MariaDB (extension: mysqli 5.5.52-MariaDB)

Demikian yang dapat kami sampaikan, terimakasih.

Regards,

Aulia Rahman

---

observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

You can check out what’s happening by running a debugged discovery :

./discovery.php -h <device_id> -m sensors -dd

Adam.

From: observium observium-bounces@observium.org On Behalf Of Lars Joergensen via observium Sent: 13 October 2020 13:24 To: Observium observium@observium.org Cc: Lars Joergensen DKLARJ@chr-hansen.com Subject: Re: [Observium] Why sometime graph are missing on the dashboard ?

Hi Adam,

I have the same issue with some sensors on an Aruba 5406. Some of them disappeared some time ago and never came back, others only update on occasion (nothing for 83 days. Then I clicked around on the graphs and suddenly they were updating).

Even if there is intermittent network/firewall bullshit going on, shouldn’t the missing stuff come back on the next discovery run?

Lars

From: observium <observium-bounces@observium.org mailto:observium-bounces@observium.org > On Behalf Of Adam Armstrong via observium Sent: 12. oktober 2020 14:29 To: 'Observium' <observium@observium.org mailto:observium@observium.org > Cc: Adam Armstrong <adama@observium.org mailto:adama@observium.org > Subject: Re: [Observium] Why sometime graph are missing on the dashboard ?

If things are occasionally un-discovered by discovery, it’s likely that you either have some network connectivity issues or you have an intervening firewall that’s doing some arbitrary filtering.

Broken SNMP queries can cause things to be removed, because it looks like the entities have vanished from the device.

Adam.

From: observium <observium-bounces@observium.org mailto:observium-bounces@observium.org > On Behalf Of Aulia Rahman via observium Sent: 12 October 2020 11:06 To: observium@observium.org mailto:observium@observium.org Cc: Aulia Rahman <aul@mybati.co.id mailto:aul@mybati.co.id > Subject: [Observium] Why sometime graph are missing on the dashboard ?

Dear All,

I've sometimes found that some server graph RAM / CPU / Traffic is missing on the dashboard. So, I can't view the graph at that time.

But when I check on the next time, that graph shows again.

What caused it and how to solve it ?

_____

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