MRTG graphing failures

[kavan]

I'm not getting MRTG performance graphs on my hosts

[root@localhost ~]# cat /etc/redhat-release
CentOS release 6.10 (Final)

x64

Installed via Hyper-v image

No special configurations

I wasn't getting any bandwidth graphs although other snmp graphs were working fine. Found this https://support.nagios.com/kb/article.php?id=29 and worked through it. At some point while I was working through it the bandwidth graphs started working, then they stopped after 15 minutes. I've gone through those steps/procedures a number of times now and twice it started graphing again but only for 15 minutes. None of the tests indicate errors,

[root@localhost ~]# time LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg
real 0m2.180s
user 0m1.345s
sys 0m0.119s

seems to vary but I haven't seen it over 7 seconds for real and I only have 5 hosts configured. (It appears running this is what starts the graphing when graphing is working)

/usr/local/nagios/libexec/check_rrdtraf -f '/var/lib/mrtg/<IP_port>.rrd' -w 1 -c 2

Reports 0bps in and out when it's not working. Of course now that I'm posting the above /usr/bin/mrtg made it start and I get

CRITICAL - Current BW in: 57.59Mbps Out: 41.57Mbps|in=57.599371Mb/s;1;2 out=41.575454Mb/s;1;2

and I have graphs for now. Assuming they aren't going to last more than 15 minutes can I get some advice? Thanks in advance.

[scottwilkerson]

What version of XI are you running?

If it is 5.5.7 there was a bug introduced in the Switch Wizard and it should be updated
Admin -> Manage Config Wizards -> Check for Updates -> Install updates

Also, running the following commands from the command line will fix a permissions problem that was introduced in this version

Code: Select all

chown apache:nagios /etc/mrtg -R
chmod 775 /etc/mrtg -R
chown apache:nagios /var/lib/mrtg -R
chmod 775 /var/lib/mrtg -R

[kavan]

Great. It looks like that fixed it. Thanks again!

[scottwilkerson]

Great. It looks like that fixed it. Thanks again!

Great!

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