Installieren von DHCP Server

apt-get install dhcp3-server

You will be asked a few questions:

On what network interfaces should the DHCP server listen? <-- eth0
Please configure the DHCP server as soon as the installation finishes. <-- Ok
The version 3 DHCP server is now non-authoritative by default <-- Ok

At the end of the installation you will see errors like these:

Generating /etc/default/dhcp3-server...
Starting DHCP server: dhcpd3 failed to start - check syslog for diagnostics.
invoke-rc.d: initscript dhcp3-server, action "start" failed.

That's ok because we did not have the chance yet to configure our DHCP server.

Quelle:  How To Set Up A DHCP Server For Your LAN

Source: Wikipedia.de

SNMP getting the Information

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Debian 8 Jessie - Multitail

Installationshinweis Ganglia: Installation

oder Install, Configure & Run Ganglia Monitoring Tool in 3 easy steps

Introduction to Ganglia on Ubuntu 14.04

Ganglia monitoring system 

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Conky is a free, light-weight system monitor for X,
that displays any information on your desktop.

Conky is licensed under the GPL and runs on Linux and BSD.

Add also to

vi /etc/cron.d/munin-plugin-apt
03  * * * *    root    apt update > /dev/null 2>&1
18  * * * *    root    apt-get  update > /dev/null 2>&1
33  * * * *    root    apt upgrade > /dev/null 2>&1
48 * * * *    root    apt-get upgrade > /dev/null 2>&1

#   service cron reload

==============================================================
Problems:
:/etc/munin/plugins# munin-run apt
pending.value 3
pending.extinfo file libmagic-mgc libmagic1
hold.value 0
---
:/etc/munin/plugins# munin-run apt_all
pending_stable.value 0
hold_stable.value 0
pending_testing.value 0
hold_testing.value 0
pending_unstable.value 0
hold_unstable.value 0

Munin | Group Information


How to use and where to define Groups, and the difference in using the Munin-Master <--> Munin-Node vs. Munin-Master with SNMP

Munin-Master <--> Munin-Node

in the Munin-Master device in the file

#   /etc/munin/munin.conf

you have information like this to add for each Munin-Node

[munin-node.yourDomani.org]
    address 10.10.10.10
    use_node_name yes

With this ([munin-node.yourDomani.org]) part you are able to define some structure for your device.
The first part, bevor the dot, is your device you wish to monitore, behinde the dot you build your structure.

If you wish to Group it and split your VM, Switch, Hardware, Infrastructure device you could create a structure like this

[server1.HW]
[Munin.VM]
[debian9.VM-Test]

Munin-Master <--> SNMP-"Node"

in the Munin-Master device in the file

#   /etc/munin/munin.conf

you have information like this to add for each

[munin-node.yourDomani.org]
    address 10.10.10.10
    use_node_name yes

Config Munin-Server

Monitoring FreeBSD with Munin

Munin & Fritzbox

Quellen/Source

- https://github.com/Tafkas/fritzbox-munin

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siehe dazu: Munin-Plugin
und Boic von Github
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