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check_mrtgtraf: MRTG data has expired
Posted: Thu May 05, 2016 8:58 am
by Bone8Head
Hi,
I'm trying to monitor some switches with
mrtg (on Centos 6.7), everything is ok but I have some problem with the cron task.
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MRTG data has expired (xxx days old)
my crontab -e is:
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*/5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
*/5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/httpd/conf/mrtg.cfg --logging /var/log/mrtg.log
I got a lot of Mail in /var/spoon/mail/root:
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From: [email protected] (Cron Daemon)
To: [email protected]
Subject: Cron <root@nagioscorefx> /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
X-Cron-Env: <LANG=it_IT.UTF-8>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
X-Cron-Env: <USER=root>
Message-Id: <[email protected]>
Date: Thu, 5 May 2016 15:45:01 +0200 (CEST)
Use of uninitialized value $first in pattern match (m//) at /usr/bin/../lib64/mrtg2/MRTG_lib.pm line 611.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2531.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2549.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2565.
ERROR: "WorkDir" not specified in mrtg config file
From [email protected] Thu May 5 15:50:02 2016
Return-Path: <[email protected]>
X-Original-To: root
Delivered-To: [email protected]
Received: by nagioscorefx.finance.com (Postfix, from userid 0)
id 13A121014F7; Thu, 5 May 2016 15:50:02 +0200 (CEST)
From: [email protected] (Cron Daemon)
To: [email protected]
Subject: Cron <root@nagioscorefx> /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
X-Cron-Env: <LANG=it_IT.UTF-8>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
X-Cron-Env: <USER=root>
Message-Id: <[email protected]>
Date: Thu, 5 May 2016 15:50:02 +0200 (CEST)
Use of uninitialized value $first in pattern match (m//) at /usr/bin/../lib64/mrtg2/MRTG_lib.pm line 611.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2531.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2549.
Use of uninitialized value $dir in concatenation (.) or string at /usr/bin/mrtg line 2565.
ERROR: "WorkDir" not specified in mrtg config file
My Mrtg files (the .html files) are in this Directory:
/var/www/html/mrgt.
For "create" the mrgt configuration files I used:
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cfgmaker --global 'WorkDir: /var/www/html/mrtg' --global 'Options[_]: bits,growright' --output /etc/httpd/conf/mrtg.cfg [email protected]
Anyone can help me out?
Thank you very much.
Re: check_mrtgtraf: MRTG data has expired
Posted: Thu May 05, 2016 10:41 am
by tgriep
In your emails, the WorkDir says it is not in your /etc/mrtg/mymrtg.cfg file.
Try adding the following line to that file and see if the files in the WorkDir folder start to update.
Re: check_mrtgtraf: MRTG data has expired
Posted: Fri May 06, 2016 7:11 am
by Bone8Head
tgriep wrote:In your emails, the WorkDir says it is not in your /etc/mrtg/mymrtg.cfg file.
Try adding the following line to that file and see if the files in the WorkDir folder start to update.
Actually my mymrtg.cfg file is empty
But there is another file called mrtg.cfg with this code inside (I added the WorkDir):
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HtmlDir: /var/www/mrtg
ImageDir: /var/www/mrtg
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg
WorkDir: /var/www/html/mrtg
#Target[r1]: 2:[email protected]
#MaxBytes[r1]: 1250000
#Title[r1]: Traffic Analysis
#PageTop[r1]: <H1>Stats for our Ethernet</H1>
Nothing changed. Maybe he is saearching for the mymrtg.cfg file anyway?
Re: check_mrtgtraf: MRTG data has expired
Posted: Fri May 06, 2016 10:23 am
by tgriep
In your crontab file, you have 2 entries, you should delete the bad entry and that should fix the email errors.
Can you post how your check_mrtgtraf command is defined and also your service check that is generating the error.
Re: check_mrtgtraf: MRTG data has expired
Posted: Mon May 09, 2016 1:35 am
by Bone8Head
tgriep wrote:In your crontab file, you have 2 entries, you should delete the bad entry and that should fix the email errors.
Can you post how your check_mrtgtraf command is defined and also your service check that is generating the error.
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# 'check_local_mrtgtraf' command definition
define command{
command_name check_local_mrtgtraf
command_line $USER1$/check_mrtgtraf -F $ARG1$ -a $ARG2$ -w $ARG3$ -c $ARG4$ -e $ARG5$
}
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define service{
use generic-service,srv-pnp ; Inherit values from a template
host_name Switch - Allied Telesis 247
service_description 7° Porta Bandwidth - Server 230
check_command check_local_mrtgtraf!/var/www/html/mrtg/192.168.50.247_7.log!AVG!1000000,1000000!5000000,5000000!10
check_interval 5
retry_interval 5
max_check_attempts 10
check_period 24x7
notification_interval 300
notification_period 24x7
notification_options w,c,r
servicegroups Switches
}
Re: check_mrtgtraf: MRTG data has expired
Posted: Mon May 09, 2016 9:29 am
by Bone8Head
I think that I found the problem.
In another site I found that the mrgt can update only 1 Switch at time (I got 3 Switch to Monitor).
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The only thing I had to do was modify some of the file location paths. Since I am monitoring multiple switches I had to modify some things.
Using the "env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg" command would not work for multiple switches. I had to change the output to look something like this "env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg_252.cfg". This was done for each switch so that I knew which output file to point the nagios check_mrtgtraf command to in the switch.cfg file.
I also had to make the appropriate change within the crontab file as well. Other wise it would not update that file and it would give the error "MRTG data has expired".
Now I have to study how to make this actually work
Re: check_mrtgtraf: MRTG data has expired
Posted: Mon May 09, 2016 10:54 am
by tgriep
MRTG can monitor multiple devices at once, all you would do is create separate config files for each device
What you would to is to add this line to your /etc/mrtg/mrtg.cfg file
Then create this folder /etc/mrtg/conf.d and put your separate config files in there. One for each device.
Make sure your crontab is as follows.
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*/5 * * * * root LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg
When MRTG runs, it will look on the /etc/mrtg/conf.d folder for any config files and then process them.
Are the log files showing up in this folder?
Re: check_mrtgtraf: MRTG data has expired
Posted: Tue May 10, 2016 8:59 am
by Bone8Head
tgriep wrote:Are the log files showing up in this folder?
Yes, all in the same Folder.
The problem is that with your configuration and cron task now no one of the 3 Switches is updating the mrtg.log files.
So I reused the old one:
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*/5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
*/5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/httpd/conf/mrtg.cfg --logging /var/log/mrtg.log
Now I'll show you what I did:
1) I create the conf.d folder (/etc/mrtg/conf.d) with the 3 mrtg_247.cfg - 248 and 249 files.
2) Added in the mrt.cfg in /etc/mrgt the "Include: conf.d/*.cfg" line.
3) The 3 .cfg files in the conf.d folders are like that (only the Target is different from the 3 files):
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HtmlDir: /var/www/mrtg
ImageDir: /var/www/mrtg
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg
WorkDir: /var/www/html/mrtg
Target[r1]: [email protected]
MaxBytes[r1]: 1250000
Title[r1]: Traffic Analysis
#PageTop[r1]: <H1>Stats for our Ethernet</H1>
4) I noticed that cron always updated the only Switch in /etc/httpd/conf/mrtg.cfg --->
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# Created by
# /usr/bin/cfgmaker --global "WorkDir: /var/www/html/mrtg" --global "Options[_]: bits,growright" --output /etc/httpd/conf/mrtg.cfg [email protected]
### Global Config Options
# for UNIX
# WorkDir: /home/http/mrtg
# or for NT
# WorkDir: c:\mrtgdata
### Global Defaults
# to get bits instead of bytes and graphs growing to the right
# Options[_]: growright, bits
EnableIPv6: no
WorkDir: /var/www/html/mrtg
Options[_]: bits,growright
Include: conf.d/*.cfg
######################################################################
# System:
# Description: 48-Port Managed 10/100 Switch w/WebView
# Contact:
# Location:
######################################################################
### Interface 1 >> Descr: '' | Name: 'e1' | Ip: '' | Eth: '30-78-30-30-32-34-66-37-62-38-66-33-39-62' ###
Target[192.168.50.247_1]: 1:[email protected]:
SetEnv[192.168.50.247_1]: MRTG_INT_IP="" MRTG_INT_DESCR=""
MaxBytes[192.168.50.247_1]: 12500000
Title[192.168.50.247_1]: Traffic Analysis for 1 --
PageTop[192.168.50.247_1]: <h1>Traffic Analysis for 1 -- </h1>
<div id="sysdetails">
etc...
5) So I create in /etc/httpd/conf another conf.d folder and added the include line in the mrtg.cfg file, but nothing changed again.
Actually I don't know what to do, I'm a little bit confused.
There are 2 mrtg.cfg files, one in /etc/httpd/conf and another one in /etc/mrgt
Re: check_mrtgtraf: MRTG data has expired
Posted: Tue May 10, 2016 2:24 pm
by tgriep
You should take a look at the MRTG web site for any guides / documents for the issues you are having.
http://oss.oetiker.ch/mrtg/doc/index.en.html
or
http://oss.oetiker.ch/mrtg/3party.en.html
I would need to see the full config files from all of the folders to help out in this issue.