ZFS StatHat

zfs-stathat.awk

BEGIN {
  FS = "\t";
  print "{\n  \"ezkey\": \"<key>\",\n  \"data\": [";
}

{ COMMA = ""; }

NR > 1 { COMMA = ","; }

$2 == "available" && match($1, "/") == 0 {
  print "    " COMMA "{ \"stat\": \"ZFS " $1 " Available\", \"value\": " $3/(1024 * 1024 * 1024) " }"; 
}

$2 == "used" {
  print "    " COMMA "{ \"stat\": \"ZFS " $1 " Used\", \"value\": " $3/(1024 * 1024 * 1024) " }"; 
}

$2 == "usedbysnapshots" && $3 != "0" {
  print "    " COMMA "{ \"stat\": \"ZFS " $1 " Used By Snapshots\", \"value\": " $3/(1024 * 1024 * 1024) " }"; 
}

$2 == "usedbydataset" {
  print "    " COMMA "{ \"stat\": \"ZFS " $1 " Used By Dataset\", \"value\": " $3/(1024 * 1024 * 1024) " }"; 
}

$2 == "compressratio" && $3 != "1.00x" {
  gsub("x", "", $3);
  print "    " COMMA "{ \"stat\": \"ZFS " $1 " Compression Ratio\", \"value\": " $3 " }"; 
}

END {
  print "  ]\n}"
}

zfs-stats.sh

#! /bin/bash

zfs get -t filesystem -Hpo name,property,value available,used,usedbysnapshots,usedbydataset,compressratio \
  | awk -f zfs-stathat.awk \
  | curl -H "Content-Type: application/json" -d @- "https://api.stathat.com/ez"