All,

I worked out what is causing the problem:  NFS shares!

The server has NFS shares which are located on the workstation which is shutdown.
As soon as the workstation is down, the 1st snmpwalk will not complete and timeout
somewhere halfway. Any subsequent snmpwalk commands will give a timeout straightaway.
This explains why there is no data recorded until the workstation is up again. At that point,
the NFS shares are restored and snmpwalk will successfully run.

To fix this problem I have added the following line in my /etc/snmp/snmpd.conf:

    skipNFSInHostResources    true

After restarting the SNMPD service NFS shares are exclude and observium is recording
the server details while the workstation is down.

Cheers,

Pieter

On 26/05/2014 18:43, overige@vanderpoel.com.au wrote:

Hi,

I recently installed Observium CE and noticed some very weird behavior.

Observium monitors currently 3 devices: 1 Debian Server + 1 Debian workstation + 1 Ubuntu workstation.
The Debian workstation is shutdown overnight and rebooted in the morning, nicely
shown in the Event logging:

Shutdown:   <date time>    System    Device status changed to Down (ping)
Reboot:        <date time>    System    Device status changed to Up
                      <date time>    Reboot    Device rebooted after <hours min sec>

That's all fine. But now the weird thing is that for the Server the Event log says almost at the same time:

                      <date time>    System    Device status changed to Down (snmp)

and when the workstation is rebooted, the Server Event log says at almost the same time:

                     <date time>    System    Device status changed to Up

Graphs for the server don't get updated/have data for the time the Debian workstation is down.
The Ubuntu workstation runs 24/7 and graphs get properly updated during time the Debian workstation is down.

I would expect that what happened with the workstation should have no effect on the data collection
of the Server.
                   
Details:

    Observium CE    0.14.4.5229
    OS                        Debian 7    (Server + Workstation)
                                 Ubuntu 10.40 LTS (Workstation 24/7)

How do I get this working properly?

Thanx,

Pieter

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