SNMP with CARP MIB?
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pfSense doesn't integrate CARP MIB to monitoring state of CARP interfaces
it's possible to add this MIB in future releases or manually?
thanks
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Nothing special about monitoring CARP interfaces. They show up like any other interface, and up=Master, down=Backup.
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Nothing special about monitoring CARP interfaces. They show up like any other interface, and up=Master, down=Backup.
yes, i know it, i'm monitoring them this way, but i'm interested in the CARP-MIB (http://www.packetmischief.ca/openbsd-snmp-mibs/#carpmib)
thanks anyway
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That is for net-snmp, we run bsnmpd so their code/mib wouldn't work.
bsnmpd does have a pf MIB:
http://files.chi.pfsense.org/jimp/BEGEMOT-PF-MIB.txt
and also
http://files.chi.pfsense.org/jimp/BEGEMOT-HOSTRES-MIB.txt -
Would you be so kind enough to explain the "up=Master,down=Backup" thing a bit more? Or is there a link somewhere to bring us n00bs up to date? :)
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Best way is to illustrate it, like so:
Master:
vip1: flags=49 <up,loopback,running>metric 0 mtu 1500 inet x.x.x.12 netmask 0xffffff80 carp: MASTER vhid 1 advbase 1 advskew 0</up,loopback,running>Backup:
vip1: flags=49 <up,loopback,running>metric 0 mtu 1500 inet x.x.x.12 netmask 0xffffff80 carp: BACKUP vhid 1 advbase 1 advskew 100</up,loopback,running>SNMP Response:
From Master:
$ snmpget -On -v 2c -c mystuff x.x.x.15 IF-MIB::ifDescr.9 .1.3.6.1.2.1.2.2.1.2.9 = STRING: vip1 $ snmpget -On -v 2c -c mystuff x.x.x.15 IF-MIB::ifOperStatus.9 .1.3.6.1.2.1.2.2.1.8.9 = INTEGER: up(1)From Backup:
$ snmpget -On -v 2c -c mystuff x.x.x.16 IF-MIB::ifDescr.11 .1.3.6.1.2.1.2.2.1.2.11 = STRING: vip1 $ snmpget -On -v 2c -c mystuff x.x.x.16 IF-MIB::ifOperStatus.11 .1.3.6.1.2.1.2.2.1.8.11 = INTEGER: dormant(5)The Interface status for the vip interface is different depending on whether it's in the master or backup state, you can poll that interface status to determine if a box is down or to find which one is master or backup.
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Thanks, that was illuminating.
