SNMPTRAPFMT(8)

🌸 SNMPTRAPFMT(8) 🌸

okay bestie, gather round, because this one is from the System Manager's Manual and it is so much cooler than it sounds 💅

✨ NAME ✨

snmptrapfmt — catch SNMP trap messages from a trap handler and log them. that's the whole job. she's a listener. she's a receiver. she's iconic 👑

🎀 SYNOPSIS 🎀

snmptrapfmt [-d num] [-D] [-f cfgfile]

💖 DESCRIPTION 💖

okay so snmptrapfmt receives SNMP trap data through a local pipe. a pipe!! and who writes into that pipe? the SNMP trap handler, obviously — which gets called by snmptrapd (and that config lives in /etc/snmp/snmptrapd.conf), and this whole arrangement gets set up during the installation of this package. no cap 🫶

then snmptrapfmt formats the trap data it received according to the specifications in the config file /etc/snmp/snmptrapfmt.conf — like, go read that file for the syntax, she's not gonna spell it out here. and where does the output go? your choice, bestie: it may be written to a log file, or forwarded to the syslog daemon. two paths. both valid. main character energy ✨

so about the options, let's break it down:

• if you pass -d 1, you enable tracing. yes, the -d 1 specifically, that's the vibe. trace info then gets written to the file /var/tmp/snmptrapfmt.trc. 📝
• if you give the option -f cfgfile, then the output of the daemon is configured via that config file you mentioned. and if you don't give it? a default output format is used. no thoughts, just defaults 🎀
• if you give the option -D, the the program will daemonize into the background. she's leaving. she's going behind the scenes. bye bestie 👋✨

and just so we're clear: the syntax of the configuration file is explained in /etc/snmp/snmptrapfmt.conf ! (yes with the exclamation mark, she's excited, let her live)

🦋 FILES 🦋

here's the whole friend group, one by one:

• /etc/init.d/snmptrapfmt is the start/stop script. 🎬
• /etc/snmp/snmptrapfmt.conf is the configuration file.
• /var/run/snmptrapfmt.pid is the PID file.
• /etc/snmp/snmptrapd.conf is the configuration file of the snmptrapd daemon, which calls the trap handler snmptrapfmthdlr.
• /usr/sbin/snmptrapfmt is the executable of the application.
• /usr/sbin/snmptrapfmthdlr is the executable of the trap handler.
• /var/run/snmptrapfmt.p is the communication pipe between the trap handler snmptrapfmthdlr and the formatter snmptrapfmt. 🥤 (it's the straw, the pipe, the whole connection)
• /var/tmp/snmptrapfmt.trc is the trace file if the option -d is specified.
• /var/log/snmptrapfmt.log is the log file as specified in the configuration file.

💜 SEE ALSO 💜

go look at these too, iykyk:

• snmptrapfmthdlr(8)
• syslog(8)
• variables(5)
• RFC 1155
• RFC 1156
• RFC 1157
• SNMP Security Internet Drafts

and that's the whole page, bestie 💖 this one came from the 4th Berkeley Distribution and it's dated 19 DECEMBER 2002 — old money, vintage, still slaying. periodt. 🎀🦋✨