Munin Plugins for stuff I use.
The MikroTik plugins are based on the ones listed on the MikroTik wiki. The ones on the MikroTik wiki use perl, which makes them too slow and resource hungry for the raspberry pi. My versions use bash, awk and snmpget, which all run fast on the pi.
To get the MikroTik plugins working:
- Install snmpget with
sudo apt-get install snmp - Install the MIB downloader with
sudo apt-get install snmp-mibs-downloader. You need this to make the snmpget tool in the scripts able to translate the human-readable MIB strings into those awful snmp v2 iso OiD strings. - Add your MikroTik to the
/etc/hostsfile so you can refer to it with a nice name:192.168.88.1 mymikrotik - Add the network name of the MikroTik to your symlink, like so:
ln -s <githubrepo>/plugins/mikrotikcpu_ /etc/munin/plugins/mikrotikcpu_mymikrotik
If you'd like to build a mikrotik plugin, start with inspecting the snmp values available.
You can find these with snmpwalk -v 2c -Os -c public 192.168.88.1 (for a default mikrotik). Your output should look somewhat like this:
sysDescr.0 = STRING: RouterOS RB SXT 5nD r2
sysObjectID.0 = OID: enterprises.14988.1
sysUpTimeInstance = Timeticks: (95109500) 11 days, 0:11:35.00
sysContact.0 = STRING:
sysName.0 = STRING: MyRouterBoard
sysLocation.0 = STRING:
sysServices.0 = INTEGER: 78
ifNumber.0 = INTEGER: 2
ifIndex.1 = INTEGER: 1
ifIndex.4 = INTEGER: 4
ifDescr.1 = STRING: ether1
ifDescr.4 = STRING: wlan2
ifType.1 = INTEGER: ethernetCsmacd(6)
If you see lines in your output starting with iso.1.5.3.5.7.4.3.2.4.5, you may be missing MIB files, and/or loading of MIBs is disabled. To have snmpwalk output lines with MIBs instead of IODs, do this:
cd /usr/share/snmp/mibs
sudo wget http://download2.mikrotik.com/Mikrotik.mib
cd /etc/snmp
nano snmp.conf
Comment out the line with mibs :, like so:
# As the snmp packages come without MIB files due to license reasons, loading
# of MIBs is disabled by default. If you added the MIBs you can reenable
# loading them by commenting out the following line.
# mibs :
snmpwalk should now behave a bit better.
Mattermost plugins provide more information about your local mattermost installation than the provided mattermost statistics page. Stuff you really want to know, like number of posts per second, number of users, number of channels.
To make these plugins work, you need the following configuration in the
/etc/munin/plugin-conf.d/munin-node configuration file:
[mattermost*]
user root
This can probably be changed to the mattermost user (or whichever user has access
to your postgresql database, but that requires rework of the plugins.