This script is used to set the PRTG config with a defined SNMP community.

prtg_snmp.sh

#!/bin/bash
# PRTG SNMP script
# Author: Jan Lauber
# Version: 1.0
# Date: 2018-02-12
# License: MIT
#
# Description:
# This script is used to set the PRTG config with a defined SNMP community.
#
# Usage:
# sudo ./prtg_snmp.sh <community> <network/mask>
#
# Example:
# sudo ./prtg_snmp.sh public 10.10.0.0/16
#

# Check if the script is run as root
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

# Check if argument 1 and 2 are set
if [ -z "$1" ] || [ -z "$2" ]; then
   echo "Usage: sudo ./prtg_snmp.sh <community> <network/mask>"
   exit 1
fi

# Check if snmpd exists
if [ ! -f /etc/snmp/snmpd.conf ]; then
   echo "snmpd does not exist" 1>&2
   # get linux distribution
    if [ -f /etc/debian_version ]; then
        echo "This is a Debian based system"
        echo "Installing snmpd"
        apt-get install snmpd
    elif [ -f /etc/redhat-release ]; then
        echo "This is a Redhat based system"
        echo "Installing snmpd"
        yum install snmpd
    elif [ -f /etc/SuSE-release ]; then
        echo "This is a SuSE based system"
        echo "Installing snmpd"
        zypper install snmpd
    elif [ -f /etc/arch-release ]; then
        echo "This is an Arch based system"
        echo "Installing snmpd"
        pacman -S snmpd
    elif [ -f /etc/gentoo-release ]; then
        echo "This is a Gentoo based system"
        echo "Installing snmpd"
        emerge net-snmp
    else
        echo "This is an unknown system"
        echo "Please install snmpd manually"
        exit 1
    fi
fi

# SNMP config path
SNMPCONF="/etc/snmp/snmpd.conf"
echo "SNMP config path: $SNMPCONF"
echo "=========================================================="
echo "Setting SNMP community, please wait..."
echo "=========================================================="

# Get the community
COMMUNITY=$1
NETWORK=$2

sudo cat << 'EOF' > $SNMPCONF
###########################################################################
#
# snmpd.conf
# An example configuration file for configuring the Net-SNMP agent ('snmpd')
# See snmpd.conf(5) man page for details
#
###########################################################################

sysLocation    Sitting on the Dock of the Bay
sysContact     Me support@bscg.ch

sysServices    72

master  agentx
agentAddress  udp:161

view   systemonly  included   .1.3.6.1.2.1.1
view   systemonly  included   .1.3.6.1.2.1.25.1

rocommunity $COMMUNITY $NETWORK

rouser authPrivUser authpriv -V systemonly

EOF

echo "=========================================================="
echo "SNMP community set to $COMMUNITY on $NETWORK"
echo "=========================================================="

# Check if snmpd is enabled
if [ -f /etc/default/snmpd ]; then
   echo "snmpd is enabled"
else
   echo "snmpd is not enabled"
fi

# Restart snmpd
echo "Restarting snmpd"
service snmpd restart

# Check if snmpd is running
if [ -f /etc/init.d/snmpd ]; then
   echo "snmpd is running"
else
   echo "snmpd is not running"
fi

# Check if snmpd is enabled
if [ -f /etc/default/snmpd ]; then
   echo "snmpd is enabled"
else
   echo "snmpd is not enabled"
fi

# exit script
exit 0