collectd-prv converts stdout from a process into collectd notifications, optionally acting like a pressure relief valve during event floods.

• script

#!/bin/bash

set -o errexit
set -o nounset
set -o pipefail

# plugin = tail
# type = syslog
# limit = 30 lines/second
tail -F $1 | collectd-prv --service="tail/syslog" --limit=30

LoadPlugin exec
<Plugin exec>
  Exec "nobody:nobody" "collectd-tail" "/var/log/syslog"
</Plugin>

make

# Recommended: build a static executable using musl
./musl-make clean all

# select a different method for process restriction
RESTRICT_PROCESS=null

# musl: enabling seccomp process restriction might require downloading a
# copy of linux kernel headers
export MUSL_INCLUDE=/tmp
git clone https://github.com/sabotage-linux/kernel-headers.git $MUSL_INCLUDE/kernel-headers
./musl-make

-s, --service plugin/type : collectd service (default: stdout/prv)

-H, --hostname name : collectd hostname (max: 16 bytes) (default: gethostname())

-l, --limit number : message rate limit (default: 0 (no limit))

-w, --window seconds : message rate window (default: 1 second)

-W, --write-error exit|drop|block : behaviour if write buffer is full

-M, --max-event-length number : max message fragment length (default: 255 - 10)

-I, --max-event-id number : max message fragment header id (default: 99)

-v, --verbose : verbose mode

-h, --help : help