From 1de96d7feb9c306dbf99d54929e95c63d938d448 Mon Sep 17 00:00:00 2001
From: stebifan <stefan@tro-mail.de>
Date: Sun, 18 Jun 2017 11:55:05 +0200
Subject: [PATCH] Create ckeck_mk-supernode

---
 files/ckeck_mk-supernode | 70 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 files/ckeck_mk-supernode

diff --git a/files/ckeck_mk-supernode b/files/ckeck_mk-supernode
new file mode 100644
index 0000000..19a902c
--- /dev/null
+++ b/files/ckeck_mk-supernode
@@ -0,0 +1,70 @@
+#!/bin/bash
+#/usr/lib/check_mk_agent/local
+export LANG=de_DE.UTF-8
+
+function confline # get first line from file $1 mathing $2, stripped of # and ; comment lines, stripped spaces and tabs down to spaces, remove trailing ;
+{
+ echo $(cat $1|grep -v '^$\|^\s*\#'|sed -e "s/[[:space:]]\+/ /g"|sed s/^\ //|sed s/\;//|grep -i "$2"|head -n 1)
+}
+
+function ati # ipv4 to longint
+{
+ ip4=$1; ipno=0
+ for (( i=0 ; i<4 ; ++i )); do
+   ((ipno+=${ip4%%.*}*$((254**$((3-${i})))))) # .0 .255 should not be counted
+   ip4=${ip4#*.}
+  done
+ echo $ipno
+}
+
+## static data
+bat_version=$(batctl -v);
+kernel=$(uname -r);
+release=$(lsb_release -ds);
+
+## Batman
+echo "0 Batman-Version Version=$bat_version; $bat_version"
+list=$(ls -F /sys/kernel/debug/batman_adv|grep /)
+for i in $list; do
+  z=$(ls /sys/kernel/debug/batman_adv/$i|wc -l)
+  if [ $z -ge 9 ]; then
+    b=$(echo $i|cut -d '/' -f1)
+    router=$(($(batctl -m $b o|wc -l)-2 ))
+    clients=$(grep -cEo "\[.*W.*\]+" /sys/kernel/debug/batman_adv/$b/transtable_global)
+    gateways=$(( $(batctl -m $b gwl|wc -l) -1 ))
+    ips=$(( $(batctl -m $b dc|wc -l) - 2))
+    wlow=$(( $router * 20 / 100 ))
+    clow=$(( $router * 5 / 100 ))
+    wlimit=$(( $router * 5 ))
+    climit=$(( $router * 10 ))
+    echo "P Batman-$b Router=$router.0;5:250;1:500|Clients=$clients.0;$wlow.0:$wlimit.0;$clow.0:$climit.0|Gateways=$gateways.0;0:3;0:5;|IPs=$ips.0";
+   fi;
+ done
+
+## isc-dhcpd-server leases
+# needs script https://github.com/eulenfunk/scripts/blob/master/dhcpleases
+if [ -r /opt/freifunk/dhcpleases ] ; then
+  totalleases=2040
+  activeleases=$(python /opt/freifunk/dhcpleases|grep "^| Total"|cut -d":" -f2|sed s/\ //)
+  remainingleases=$(($totalleases - $activeleases))
+  actwarn=$(($totalleases * 75 / 100))
+  actcrit=$(($totalleases * 90 / 100))
+  echo "P Dhcp-Leases active-leases=$activeleases.0;5:$actwarn;1:$actcrit active:$activeleases remaining:$remainingleases pool=$totalleases";
+ fi
+
+#L2TP
+l_tunnel=$(ip a |grep l2tp | grep br-nodes -c);
+tunneldigger=$(ifconfig|grep br-nodes -c);
+echo "P L2TP Clients=$l_tunnel.0;1:100;0:150|Tunneldiggerbridges=$tunneldigger.0;0.1:1;0.1:2; L2TP-Clients:$l_tunnel Tunneldiggerbridges:$tunneldigger"
+
+## Conntrack
+conntrack=$(conntrack -C);
+conntrack_limit=$(sysctl -a 2>/dev/null |grep net.nf_conntrack_max|cut -d ' ' -f 3);
+conntrack_remain=$(echo $conntrack_limit - $conntrack|bc)
+wlow=0.1
+clow=1.1
+wlimit=$(echo $conntrack_limit *0.7|bc)
+climit=$(echo $conntrack_limit *0.9|bc)
+wrlimit=$(echo $conntrack_limit *0.3|bc)
+crlimit=$(echo $conntrack_limit *0.1|bc)
+echo "P Conntrack conntrack=$conntrack.0;$wlow:$wlimit;$clow:$climit|conntrack_remain=$conntrack_remain.0;$wrlimit:$conntrack_limit;$crlimit:$conntrack_limit; Conntrack:$conntrack Conntrack-Remain:$conntrack_remain Conntrack-Limit:$conntrack_limit"