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-c7fc3d
+#!/bin/bash
 #%# family=auto
 : << EOF
 =head1 NAME
 mikrotik_system - This plugin fetches multiple Values from a mikrotik device.
 =head1 CONFIGURATION
-a79efee
+tested with a RB493G, RB750GR3, RB5009 and CRS309.
-c7fc3d
+Dependencies:
 - sshpass
 A User is needed for this plugin to work:
 /user add name=munin group=read password=hallowelt address=<munin-server-ip>
 plugin config:
 [mt_system_<name>]
 user root
 env.ssh_user munin
 env.ssh_password hallowelt
 env.ssh_host 192.168.2.1
 =head1 AUTHOR
 =over 4
 =item * Michael Grote
 =back
 =head1 LICENSE
 GPLv3 or later
 SPDX-License-Identifier: GPL-3.0-or-later
 =head1 MAGIC MARKERS
 =begin comment
 These magic markers are used by munin-node-configure when installing
 munin-node.
 =end comment
   #%# family=auto
 =cut
 EOF
-d31
+# set variables with default values
-c7fc3d
+ssh_user=${ssh_user:-user}
 ssh_password=${ssh_password:-password}
 ssh_host=${ssh_host:-192.168.2.1}
-d31
+c=0 # counter, it is used in a few loops
-c7fc3d
+            Michael Grote
-            ee4f4ce2
+# Function to get stderr from command
 # USAGE: catch STDOUT STDERR cmd args..
-dbb4d0
+# Source: https://stackoverflow.com/a/41069638
-            ee4f4ce2
+catch()
+{
 eval "$({
 __2="$(
   { __1="$("${@:3}")"; } 2>&1;
   ret=$?;
   printf '%q=%q\n' "$1" "$__1" >&2;
   exit $ret
   )";
 ret="$?";
 printf '%s=%q\n' "$2" "$__2" >&2;
 printf '( exit %q )' "$ret" >&2;
 } 2>&1 )";
+}
-d31
+# functions
-c7fc3d
+function get_name {
   while read -r line; do
     if echo "$line" | grep -q 'name:'; then
-b7eb2a
+      name="$(echo "$line" | grep -E '\s+name:' | cut -f2 -d: | sed 's/^ *//g' | sed 's/[^A-Za-z0-9]/_/')"
-c7fc3d
+    fi
   done <<< "$data"
+}
 function get_ros_version {
   while read -r line; do
     if echo "$line" | grep -q 'version:'; then
       if echo "$line" | cut -f2 -d" " | grep --quiet "^7\."; then
         ros_version="7"
       else
         ros_version="6"
       fi
     fi
   done <<< "$data"
+}
 function get_cpu_count {
   while read -r line; do
     if echo "$line" | grep -q 'cpu-count'; then
       anzahl_cpu=$(echo "$line" | grep cpu-count: | sed -r 's/(cpu-count: )([0-9]+)/\2/g' | tr -dc '0-9')
     fi
   done <<< "$data"
+}
 function get_data {
-d31
+  # fetch data per ssh
-            ee4f4ce2
+  catch data stderr sshpass -p  "$ssh_password" ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$ssh_user"@"$ssh_host" ':delay 6s; /system health print; /system resource print; /system resource cpu print; /system identity print'
   data_ret=$?
+}
 function validate_data {
   if [ $data_ret -ne 0 ]; then
     echo "SSH returned errorcode = $data_ret:"
     echo "$stderr"
     exit $data_ret
   fi
-c7fc3d
+            Michael Grote
 function get_mem_total {
   mem_total=$(
     while read -r line; do
       echo "$line" | awk '/total-memory:/{ gsub(/MiB/,"",$2); print $2 }' | tr -dc '0-9.'
     done <<< "$data")
+}
 function get_mem_free {
   mem_free=$(
     while read -r line; do
       echo "$line" | awk '/free-memory:/{ gsub(/MiB/,"",$2); print $2 }' | tr -dc '0-9.'
     done <<< "$data")
+}
 function get_voltage_label {
-d31
+  while read -r line; do # for every line
     # output line
     # search with awk for "voltage:"
     # if found
     # print line
     # external/bash-variables with "'"<var>"'"
-c7fc3d
+    echo "$line" | awk '/voltage:/{
       print "multigraph voltage_graph_""'"$name"'";
       print "graph_title voltage " "'"$name"'";
       print "graph_vlabel volt";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "voltage.label voltage";
       print "graph_info Input Voltage."
       }'
   done <<< "$data" # der variable data
+}
 function get_voltage_value {
   while read -r line; do
-d31
+    # like the label functions
     # print title if dirtyconfig is not set
     # because the call does not come in "config"
-c7fc3d
+    if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
       echo "$line" | awk '/voltage:/{
         print "multigraph voltage_graph_""'"$name"'";
         }'
     fi
-d31
+    # remove with gsub the char % in argument $2
     # print $2
-c7fc3d
+    echo "$line" | awk '/voltage:/{
       gsub(/V/,"",$2);
       print "voltage.value " $2
       }'
   done <<< "$data"
+}
 function get_bad_blocks_label {
   while read -r line; do
     echo "$line" | awk '/bad-blocks:/{
       print "multigraph bad_blocks_graph_""'"$name"'";
       print "graph_title bad blocks " "'"$name"'";
       print "graph_vlabel %";
       print "graph_category mikrotik";
-f333c
+      print "graph_args -l 0 --upper-limit 5";
-c7fc3d
+      print "bad_blocks.label bad_blocks";
-f333c
+      print "bad_blocks.warning 3;
       print "bad_blocks.critical 4";
-c7fc3d
+      print "graph_info Percentage of Bad Blocks."
       }'
   done <<< "$data"
+}
 function get_bad_blocks_value {
   while read -r line; do
     if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
     echo "$line" | awk '/bad-blocks:/{
       print "multigraph bad_blocks_graph_""'"$name"'";
       }'
     fi
     echo "$line" | awk '/bad-blocks:/{
       gsub(/%/,"",$2);
       print "bad_blocks.value " $2
       }'
   done <<< "$data"
+}
 function get_write_sect_total_label {
   while read -r line; do
     echo "$line" | awk '/write-sect-total:/{
       print "multigraph write_sect_total_graph_""'"$name"'";
       print "graph_title Total sector writes " "'"$name"'";
       print "graph_vlabel count";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "write_sect_total.label write_sect_total";
       print "graph_info Total sector writes."
       }'
   done <<< "$data"
+}
 function get_write_sect_total_value {
   while read -r line; do
     if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
       echo "$line" | awk '/write-sect-total:/{
         print "multigraph write_sect_total_graph_'"$name"'";
         }'
     fi
     echo "$line" | awk '/write-sect-total:/{
       print "write_sect_total.value " $2
       }'
   done <<< "$data"
+}
 function get_write_sect_since_reboot_label {
   while read -r line; do
     echo "$line" | awk '/write-sect-since-reboot:/{
       print "multigraph write_sect_since_reboot_graph_'"$name"'";
       print "graph_title Sector writes since reboot " "'"$name"'";
       print "graph_vlabel count";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "write_sect_since_reboot.label write_sect_since_reboot";
       print "graph_info Total Sector writes since last reboot."
       }'
   done <<< "$data"
+}
 function get_write_sect_since_reboot_value {
   while read -r line; do
     if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
       echo "$line" | awk '/write-sect-since-reboot:/{
         print "multigraph write_sect_since_reboot_graph_""'"$name"'";
       }'
     fi
     echo "$line" | awk '/write-sect-since-reboot:/{
       print "write_sect_since_reboot.value " $2
       }'
   done <<< "$data"
+}
 function get_temperature_label {
   while read -r line; do
     echo "$line" | awk '/temperature/{
       print "multigraph temperature_graph_""'"$name"'";
       print "graph_title temperature " "'"$name"'";
       print "graph_vlabel °C";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "temperature.label cpu temperature";
       print "temperature.warning 75";
       print "temperature.critical 90"
       }'
   done <<< "$data"
+}
 function get_temperature_value {
   get_ros_version
   while read -r line; do
     if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
       echo "$line" | awk '/temperature/{
         print "multigraph temperature_graph_""'"$name"'";
         }'
     fi
     if [ "$ros_version" == "6" ]; then
       echo "$line" | awk '/temperature:/{
         gsub(/C/,"",$2);
         print "temperature.value " $2
         }'
     fi
     if [ "$ros_version" == "7" ]; then
       echo "$line" | awk '/cpu-temperature/{
         print "temperature.value " $3
         }'
     fi
   done <<< "$data"
+}
 function get_cpu_label {
   echo multigraph cpu_load_graph_"$name"
   echo graph_title cpu load "$name"
   echo graph_vlabel %
   echo graph_category mikrotik
   echo graph_args -l 0 --upper-limit 100
   echo cpu_total.label total load
   echo cpu_total.warning 75
   echo cpu_total.critical 90
   echo graph_info Total CPU Load and Load, IRQ and Disk per Core.
   while [ "$c" -lt "$anzahl_cpu" ]; do
     while read -r line; do
       echo "$line" | grep cpu$c | awk '{
         print "cpu"'"$c"'"_load.label " "cpu" "'"$c"'" " load"
         print "cpu"'"$c"'"_irq.label " "cpu" "'"$c"'" " irq"
         print "cpu"'"$c"'"_disk.label " "cpu" "'"$c"'" " disk"
         }'
     done <<< "$data"
     c=$(( c + 1 ))
   done
+}
 function get_cpu_value {
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
     echo multigraph cpu_load_graph_"$name"
   fi
   while read -r line; do
     echo "$line" | awk '/cpu-load:/{
       gsub(/%/,"",$2);
       print "cpu_total.value " $2
       }'
   done <<< "$data"
   c=0
   while [ "$c" -lt "$anzahl_cpu" ]; do
     while read -r line; do
       echo "$line" | grep cpu$c | awk '{
         gsub(/%/,"",$3);
         gsub(/%/,"",$4);
         gsub(/%/,"",$5);
         print "cpu"'"$c"'"_load.value " $3
         print "cpu"'"$c"'"_irq.value " $4
         print "cpu"'"$c"'"_disk.value " $5
         }'
     done <<< "$data"
     c=$(( c + 1 ))
   done
+}
 function get_memory_label {
   get_mem_total
   get_mem_free
   while read -r line; do
-            b43ec018
+    echo "$line" | awk -v name=$name '/free-memory:/{
       printf "multigraph memory_graph_%s\n", name;
       printf "graph_title memory %s\n", name;
-c7fc3d
+      print "graph_vlabel MiB";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "total_memory.label total memory";
       print "used_memory.label used memory";
       print "free_memory.label free memory";
       print "graph_info Total, Used & free RAM.";
       gsub(/MiB/,"",$2);
-            b43ec018
+      printf "used_memory.critical %.0f\n", $2*0.9;
       printf "used_memory.warning %.0f\n", $2*0.7 }'
-c7fc3d
+  done <<< "$data"
+}
 function get_memory_value {
   get_mem_total
   get_mem_free
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
-c3855be
+    echo multigraph memory_graph_"$name"
-c7fc3d
+  fi
   while read -r line; do
     echo "$line" | awk '/total-memory:/{
         gsub(/MiB/,"",$2);
-dd16cc5
+        printf "total_memory.value %.0f\n", $2
-c7fc3d
+      }'
   done <<< "$data"
   while read -r line; do
     echo "$line" | awk '/free-memory:/{
         gsub(/MiB/,"",$2);
-dd16cc5
+        printf "free_memory.value %.0f\n", $2
-c7fc3d
+      }'
   done <<< "$data"
-d31
+<<<<<<< HEAD
-c7fc3d
+  # berechne used-memory
   # gesamt + frei = benutzt
-f333c
+  printf "used_memory.value %.0f\n" "$(echo $mem_total $mem_free | awk '{print ($1 - $2)}')"
-d31
+=======
   # calculate used-memory
   # total - free = used
   echo used_memory.value "$(echo $mem_total $mem_free | awk '{print ($1 - $2)}')"
 >>>>>>> fc66f426 (translated comments form german to englisch)
-c7fc3d
+            Michael Grote
 function get_disk_label {
   while read -r line; do
-c3855be
+    echo "$line" | awk -v name=$name '/free-hdd-space:/{
       printf "multigraph disk_graph_%s\n", name;
       printf "graph_title disk %s\n", name;
-c7fc3d
+      print "graph_vlabel Bytes";
       print "graph_category mikrotik";
       print "graph_args -l 0";
       print "total_disk.label total disk space";
       print "free_disk.label free disk space";
       print "graph_info Total & free disk space."}'
   done <<< "$data"
+}
 function get_disk_value {
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "0" ] || [ -z "$MUNIN_CAP_DIRTYCONFIG" ]; then
-c3855be
+    echo multigraph disk_graph_"$name"
-c7fc3d
+  fi
   while read -r line; do
     echo "$line" | grep KiB | awk '/free-hdd-space:/ {
       gsub(/KiB/,"",$2)
-f333c
+      printf "free_disk.value %d\n", $2*1024 }'
-c7fc3d
+    echo "$line" |  grep MiB | awk '/free-hdd-space:/ {
       gsub(/MiB/,"",$2)
-f333c
+      printf "free_disk.value %d\n", $2*1048576}'
-c7fc3d
+    echo "$line" | grep KiB | awk '/total-hdd-space:/ {
       gsub(/KiB/,"",$2)
-f333c
+      printf "total_disk.value %d\n", $2*1024 }'
-c7fc3d
+    echo "$line" |  grep MiB | awk '/total-hdd-space:/ {
       gsub(/MiB/,"",$2)
-f333c
+      printf "total_disk.value %d\n", $2*1048576 }'
-c7fc3d
+  done <<< "$data"
+}
-d31
+# call functions, the order is important
-c7fc3d
+get_data
-            ee4f4ce2
+validate_data
-c7fc3d
+get_name
 get_cpu_count
-d31
+# munin-Logic
 # id $1 = X; then
-c7fc3d
+if [ "$1" = "autoconf" ]; then
     if ! command -v sshpass &> /dev/null; then
         echo "[ERROR] sshpass could not be found!"
     else
         echo "yes"
     fi
     exit 0
 fi
 if [ "$1" = "config" ]; then
-d31
+  # print label
   # if dirtyconfig is set print the value
-c7fc3d
+  get_voltage_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_voltage_value
   fi
   get_bad_blocks_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_bad_blocks_value
   fi
   get_write_sect_total_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_write_sect_total_value
   fi
   get_write_sect_since_reboot_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_write_sect_since_reboot_value
   fi
   get_temperature_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_temperature_value
   fi
   get_cpu_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_cpu_value
   fi
   get_memory_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_memory_value
   fi
   get_disk_label
   if [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
     get_disk_value
   fi
   exit 0
 fi
-d31
+# does not get called if dirtyconfig is set
-c7fc3d
+get_voltage_value
 get_bad_blocks_value
 get_write_sect_total_value
 get_write_sect_since_reboot_value
 get_temperature_value
 get_cpu_value
 get_memory_value
 get_disk_value
 exit 0
-d31
+# Example Output ROS 6.4*
-c7fc3d
+#  voltage: 24.5V
 #   cpu-temperature: 31C
 #                    uptime: 4w3d21h28m58s
 #                   version: 6.48.4 (stable)
 #                build-time: Aug/18/2021 06:43:27
 #          factory-software: 6.44.6
 #               free-memory: 475.8MiB
 #              total-memory: 512.0MiB
 #                       cpu: ARMv7
 #                 cpu-count: 2
 #             cpu-frequency: 800MHz
 #                  cpu-load: 9%
 #            free-hdd-space: 2124.0KiB
 #           total-hdd-space: 15.9MiB
 #   write-sect-since-reboot: 339810
 #          write-sect-total: 350544
 #                bad-blocks: 0%
 #         architecture-name: arm
 #                board-name: CRS309-1G-8S+
 #                  platform: MikroTik
 #  # CPU                                                                                                                                         LOAD         IRQ        DISK
 #  0 cpu0                                                                                                                                          0%          0%          0%
 #  1 cpu1                                                                                                                                         19%          0%          0%
 #   name: crs309
-d31
+# Example Output ROS 7*
-c7fc3d
+# Columns: NAME, VALUE, TYPE
 #   #  NAME             VA  T
 #   0  cpu-temperature  44  C
 #                    uptime: 3d1h30m
 #                   version: 7.0.5 (stable)
 #                build-time: Aug/06/2021 11:33:39
 #          factory-software: 7.0.4
 #               free-memory: 818.8MiB
 #              total-memory: 1024.0MiB
 #                 cpu-count: 4
 #             cpu-frequency: 1400MHz
 #                  cpu-load: 0%
 #            free-hdd-space: 993.8MiB
 #           total-hdd-space: 1025.0MiB
 #   write-sect-since-reboot: 4802
 #          write-sect-total: 4802
 #                bad-blocks: 0%
 #         architecture-name: arm64
 #                board-name: RB5009UG+S+
 #                  platform: MikroTik
 # Columns: CPU, LOAD, IRQ, DISK
 #   #  CPU   LO  IR  DI
 #   0  cpu0  0%  0%  0%
 #   1  cpu1  0%  0%  0%
 #   2  cpu2  0%  0%  0%
 #   3  cpu3  0%  0%  0%
 #   name: rb5009
+#

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