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