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Re: Runaway network bandwith alarms after upgrade

From: Paul Theodoropoulos
Subject: Re: Runaway network bandwith alarms after upgrade
Date: Wed, 19 Oct 2016 12:10:35 -0700
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:50.0) Gecko/20100101 Thunderbird/50.0

In the interest of not getting unnecessary alerts in the middle of the night due to this, I've simply replaced the existing test with the network saturation test - which is all I'm really after, anyway.

On 10/17/16 13:55, Paul Theodoropoulos wrote:
I recently upgraded a couple of servers from Debian Wheezy to Debian
Jessie. Since then, I'm getting frequent alarms from my network
bandwidth test.

The test:
check network network-bandwidth with interface eth0
if total upload > 3 GB in last 1 hours then alert
if total download > 5 GB in last 2 hours then alert
if total download > 10 GB in last day then alert

I wasn't getting alarms before the upgrade, so to try to be thorough, I
rebuilt monit from source. No change. This is 5.19.

The problem is that there's definitely not bandwidth anywhere near my
testing values taking place. With an uptime of 1 day, 14 hours, eth0 shows:

eth0      Link encap:Ethernet  HWaddr 00:50:56:a7:3e:8e
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::250:56ff:fea7:3e8e/64 Scope:Link
          RX packets:27941718 errors:0 dropped:21 overruns:0 frame:0
          TX packets:59281394 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:333591539 (318.1 MiB)  TX bytes:4005580141 (3.7 GiB)

Thoughts? I upgraded a number of other servers in our farm, and have not
experienced this.

Paul Theodoropoulos

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