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There ought to be some sort of monitoring for the current/past state of the network. Currently this page is a log of BenjaminJencks attempts to set this up. Currently we have http://buick.personaltelco.net/cacti/graph_view.php == Vision == Something, probably Cacti, monitoring all the APs for * Number of associated stations (done with assoc_count script) * Link throughput (built into snmpd, unless bridges cause weirdness (I don't see why they would)) * Link status? This might be derived from throughput |
= Status = {{{chevy}}} is running Cacti, and monitoring all of the deployed metrixes and ciscos. The graphs are available at |
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== So Far == * mississippi has snmp tools installed * All currently deployed metrixes have snmpd installed, as well as {{{/usr/local/bin/assoc_count}}}, which prints the number of associated stations. * snmpd is configured to use assoc_count for OID {{{1.3.6.1.4.1.2021.8.1.101.1}}}, otherwise known as {{{UCD-SNMP-MIB::extOutput.1}}}. * This means you can count stations with {{{snmpget -c public -v 1 <<Host>> 1.3.6.1.4.1.2021.8.1.101.1}}} * Installed IEEE802dot11-MIB on mississippi. use -m IEEE802dot11-MIB option on snmp commands when you need to. * Installed Cacti. * Made host template "Metrix box" that includes # of STAs graph. |
http://chevy.personaltelco.net/cacti/ |
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| == Set up == |
Use username: ''guest'', password: ''freewifirocks''. Management interface at https://chevy.personaltelco.net/cacti/ = Set up = == Metrix == |
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mississippi$ scp snmpd.conf root@metrix-ed.mississippi:/etc/snmp mississippi$ scp assoc_count root@metrix-ed.mississippi:/usr/local/bin |
naya$ scp snmpd.conf root@metrix-ed.mississippi:/etc/snmp naya$ scp assoc_count root@metrix-ed.mississippi:/usr/local/bin |
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== Next Steps == * These need SVN access, so I can edit httpd.conf and snmpd.conf * Monitor throughput on mississippi itself. * Fix the kludge on httpd.conf I did. |
* Add the device to Cacti with the Metrix Box template. * Create the Associated Stations, ath0, ath1...athN graphs. * Add the device to the main graph tree. * Add the Assoc. STAs graph to the Assoc STAs page. == WGTs == The WGTs are using the ipkg repository {{{ http://www.personaltelco.net/~russell/kamikaze/r3291/packages/ }}} and have the {{{snmpd}}} package (with its dependencies) installed. They use the same {{{snmpd.conf}}} and {{{assoc_count}}} script as the metrixes, so they look pretty much the same to cacti. = Diagnostics = /usr/local/bin/assoc_count is a homebrew script. It reports the number of associations on ath0. It only works with madwifi-ng. snmpd.conf has the line {{{ exec assoc_count /usr/local/bin/assoc_count }}} to enable it. This exports the association count on OID {{{1.3.6.1.4.1.2021.8.1.101.1}}}. Note that this OID is the standard for external exec'ed scripts and a second exec would use the same OID, except ending with a {{{.2}}}. Other than that, everything is standard net-snmp exports. The assoc_count script, is quite simple, it looks like: {{{ #!/bin/ash echo $((`wc -l < /proc/net/madwifi/ath0/associated_sta`/3)) }}} = TODO = * Figure out why we are getting SNMP errors * Enter remaining devices * A (remote) backup strategy for psql tables |
Status
chevy is running Cacti, and monitoring all of the deployed metrixes and ciscos. The graphs are available at
Use username: guest, password: freewifirocks.
Management interface at https://chevy.personaltelco.net/cacti/
Set up
Metrix
To set up a metrix box for monitoring:
metrix# remountrw metrix# apt-get install snmpd ash metrix# vi /etc/default/snmpd # set TRAPDRUN=no metrix# cd /var/lib metrix# cp -a snmp/ /ro/var/lib metrix# mv snmp/ /rw/var/lib metrix# ln -s /rw/var/lib/snmp/ . // Get snmpd and assoc_count from another metrix naya$ scp snmpd.conf root@metrix-ed.mississippi:/etc/snmp naya$ scp assoc_count root@metrix-ed.mississippi:/usr/local/bin metrix# /etc/init.d/snmpd restart metrix# remountro
- Add the device to Cacti with the Metrix Box template.
- Create the Associated Stations, ath0, ath1...athN graphs.
- Add the device to the main graph tree.
- Add the Assoc. STAs graph to the Assoc STAs page.
WGTs
The WGTs are using the ipkg repository
http://www.personaltelco.net/~russell/kamikaze/r3291/packages/
and have the snmpd package (with its dependencies) installed. They use the same snmpd.conf and assoc_count script as the metrixes, so they look pretty much the same to cacti.
Diagnostics
/usr/local/bin/assoc_count is a homebrew script. It reports the number of associations on ath0. It only works with madwifi-ng. snmpd.conf has the line
exec assoc_count /usr/local/bin/assoc_count
to enable it. This exports the association count on OID 1.3.6.1.4.1.2021.8.1.101.1. Note that this OID is the standard for external exec'ed scripts and a second exec would use the same OID, except ending with a .2. Other than that, everything is standard net-snmp exports. The assoc_count script, is quite simple, it looks like:
echo $((`wc -l < /proc/net/madwifi/ath0/associated_sta`/3))
TODO
- Figure out why we are getting SNMP errors
- Enter remaining devices
- A (remote) backup strategy for psql tables