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Diffstat (limited to 'nagios-downstream-list')
-rwxr-xr-x | nagios-downstream-list | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/nagios-downstream-list b/nagios-downstream-list new file mode 100755 index 0000000..6485e89 --- /dev/null +++ b/nagios-downstream-list @@ -0,0 +1,62 @@ +#!/usr/bin/env bash + +# +# nagios-downstream-list(1) -- List all the descendents of at least one given +# host, unique and sorted. +# +# $ ndl abc-example-mc-1 +# +# Author: Tom Ryder <tom@sanctum.geek.nz> +# Copyright: 2016 +# + +# Name self +self=nagios-downstream-list + +# Usage printing function +usage() { + printf 'USAGE: %s HOST1 [HOST2 ... ]\n' "$self" +} + +# Handle options, just -h help at the moment +OPTIND=1 +while getopts 'h' opt ; do + case "$opt" in + h) + usage + exit 0 + ;; + '?') + usage >&2 + exit 1 + ;; + esac +done +shift "$((OPTIND-1))" + +# We need at least one argument remaining +if ! (($#)) ; then + usage >&2 + exit 1 +fi + +# Define the path to the Livestatus socket +socket=${MK_LIVESTATUS_SOCKET:-/usr/local/nagios/var/rw/live} + +# Recursive function to print all the descendents of the arguments +descendents() { + for ancestor ; do + while read -r child ; do + printf '%s\n' "$child" + descendents "$child" + done < <(unixcat "$socket" <<EOF +GET hosts +Columns: host_name +Filter: parents >= $ancestor +EOF + ) + done | sort -uV +} + +# Run the recursive function on all the arguments given to this script +descendents "$@" |