mirror of
https://github.com/munin-monitoring/muninlite.git
synced 2024-11-16 16:48:33 +01:00
7c8bd1e394
git-svn-id: svn://svn.code.sf.net/p/muninlite/code/muninlite@1 35caa317-6b62-4e8a-81c0-b04f0c356266
171 lines
4.8 KiB
Text
171 lines
4.8 KiB
Text
README for MuninLite
|
|
====================
|
|
|
|
MuninLite is a single Bourne Shell script that implements the Munin
|
|
protocoll as well as some Linux specific plugins. The motivation for
|
|
developing MuninLite was to provide a simple Munin Node, using inetd
|
|
on systems without a full featured Perl and/or bash or a busybox
|
|
system.
|
|
|
|
MuninLite is Copyright (C) 2007 Rune Nordbøe Skillingstad
|
|
<rune@skillingstad.no> and released under GPLv2 (see LICENSE file)
|
|
|
|
Features
|
|
--------
|
|
MuninLite implements the following plugins:
|
|
* df
|
|
* cpu
|
|
* if_
|
|
* if_err_
|
|
* load
|
|
* memory
|
|
* processes
|
|
* swap
|
|
* netstat
|
|
* uptime
|
|
* interrupts
|
|
* irqstats
|
|
|
|
Included files
|
|
--------------
|
|
Changelog Changelog
|
|
CREDITS Credits to contributors
|
|
LICENSE GPLv2 License
|
|
Makefile Rules to make munin-node
|
|
README This file
|
|
TODO Things to do in future releases
|
|
VERSION Current version
|
|
munin-node.in The MuninLite script skeleton
|
|
examples/xinetd.d/munin Sample xinetd configuration
|
|
examples/inetd.conf Sample inetd.conf configuration
|
|
examples/inetd.busybox Sample inetd.conf configuration for busybox
|
|
examples/hosts.deny Sample hosts.deny configuration
|
|
examples/hosts.allow Sample hosts.allow configuration
|
|
plugins/cpu CPU usage plugin
|
|
plugins/df Filesystem usage plugin
|
|
plugins/if_ Network interface traffic plugin
|
|
plugins/if_err_ Network interface errors plugin
|
|
plugins/interrupts Interrupts & context switches plugin
|
|
plugins/irqstats Individual interrupts plugin
|
|
plugins/load Load average plugin
|
|
plugins/memory Memory usage plugin
|
|
plugins/netstat Netstat plugin
|
|
plugins/processes Number of Processes plugin
|
|
plugins/swap Swap in/out plugin
|
|
plugins/uptime Uptime plugin
|
|
|
|
Build requirements
|
|
------------------
|
|
Make (Not sure what requirements)
|
|
Perl (even very old versions should work)
|
|
|
|
Requirements
|
|
------------
|
|
Bourne Shell (ash or dash should be sufficient)
|
|
grep (simple grep in busybox is sufficient)
|
|
sed (simple sed in busybox is sufficient -- but a bit strange...)
|
|
cut (cut in busybox is sufficient)
|
|
wc (wc in busybox is sufficient)
|
|
xargs (xargs in busybox is sufficient)
|
|
inetd (inetd in busybox is sufficient)
|
|
|
|
Installation
|
|
------------
|
|
Download source and unpack it.
|
|
Edit Makefile to suit your choice of plugins
|
|
|
|
Make munin-node by running "make"
|
|
# make
|
|
Making munin-node for muninlite version 0.9.14
|
|
Adding plugin df
|
|
Adding plugin cpu
|
|
Adding plugin if_
|
|
Adding plugin if_err_
|
|
Adding plugin load
|
|
Adding plugin memory
|
|
Adding plugin processes
|
|
Adding plugin swap
|
|
Adding plugin netstat
|
|
Adding plugin uptime
|
|
Adding plugin interrupts
|
|
Adding plugin irqstats
|
|
|
|
Copy munin-node to a suitable location (/usr/local/bin/) and make it
|
|
executable (there will be a "make install" at a later release)
|
|
|
|
# cp munin-node /usr/local/bin
|
|
# chmod +x /usr/local/bin/munin-node
|
|
|
|
Add munin port to /etc/services
|
|
|
|
# echo "munin 4949/tcp lrrd # Munin" >>/etc/services
|
|
|
|
Configure inetd or xinetd to fork this script for request on the
|
|
munin port (4949).
|
|
|
|
Sample configuration for xinetd is located in examples/xinetd.d/munin
|
|
|
|
# cp examples/xinetd.d/munin /etc/xinetd.d
|
|
# killall -HUP xinetd
|
|
|
|
Sample configuration for inetd is located in examples/inetd.conf
|
|
|
|
# cat examples/inetd.conf >> /etc/inetd.conf
|
|
# killall -HUP inetd
|
|
|
|
Restrict access to munin port using hosts.allow and
|
|
hosts.deny or add a rule to your favorite firewall config.
|
|
Examples of hosts.allow/deny settings is provided in the examples
|
|
directory.
|
|
|
|
Iptables might be set with something like this:
|
|
|
|
# iptables -A INPUT -p tcp --dport munin --source 10.42.42.25 -j ACCEPT
|
|
|
|
Test
|
|
----
|
|
To test script, just run it (/usr/bin/local/munin-node):
|
|
|
|
# /usr/local/bin/munin-node
|
|
# munin node at localhost.localdomain
|
|
help
|
|
# Unknown command. Try list, nodes, config, fetch, version or quit
|
|
list
|
|
df cpu if_eth0 if_eth1 if_err_eth0 if_err_eth1 load memory
|
|
version
|
|
munins node on mose.medisin.ntnu.no version: 0.0.5 (munin-lite)
|
|
quit
|
|
|
|
For inetd-test, try to telnet to munin port from allowed host.
|
|
|
|
# telnet localhost 4949
|
|
Trying 127.0.0.1...
|
|
Connected to localhost.
|
|
Escape character is '^]'.
|
|
# munin node at localhost.localdomain
|
|
help
|
|
# Unknown command. Try list, nodes, config, fetch, version or quit
|
|
list
|
|
df cpu if_eth0 if_eth1 if_err_eth0 if_err_eth1 load memory
|
|
version
|
|
munins node on mose.medisin.ntnu.no version: 0.0.5 (munin-lite)
|
|
quit
|
|
Connection closed by foreign host.
|
|
|
|
|
|
Plugin configuration
|
|
------------------------
|
|
To configure which plugins should be enabled, locate the PLUGINS
|
|
variable in munin-node and remove unwanted plugins.
|
|
|
|
There is no specific configuration for plugins.
|
|
|
|
Munin configuration
|
|
-------------------
|
|
Configure your /etc/munin/munin.conf as you would for a regular
|
|
munin-node.
|
|
|
|
[some.host.tld]
|
|
address 10.42.42.25
|
|
use_node_name yes
|
|
|