Munin is a free and open source solution to gather and graph \"everything\" on your systems using Tobi Oetiker\'s rrdtool. Munin the monitoring tool surveys all your computers and remembers what it saw. It presents all the information in graphs through a web interface. Munin\'s emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be automatically playing with no more effort.Using Munin you can easily monitor the performance of your computers, networks, SANs, applications, weather measurements and whatever comes to mind. It makes it easy to determine \"what\'s different today\" when a performance problem crops up. It makes it easy to see how you\'re doing capacity-wise on any resources.Munin uses the excellent RRDTool (written by Tobi Oetiker) and the framework is written in Perl, while plugins may be written in any language. Munin has a master/node architecture in which the master connects to all the nodes at regular intervals and asks them for data. It then stores the data in RRD files, and (if needed) updates the graphs. One of the main goals has been ease of creating new plugins (graphs).Munin is written in Perl and plugins are easy to write. \"Porting\" to or from any Unix platform is quite easy if you have some Perl/shell/sysadmin experience.What\'s New in This Release: [ read full changelog ]· Localization problem in 1.4.1 (closes #781)· Sort plugin configuration file order. This ensures some predictability· regarding where a configuration setting comes from when multiple files· specify the same configuration variables.· For details, see debian bug http://bugs.debian.org/564098· munin-cgi-graph*: cgi semaphore fix, hopefully cures #834· Munin/Master/GraphOld.pm sum+colour fix (closes #731)· plugin to connect to a separate munin-node (or other daemon speaking the· munin-node protocol) and fetch values from there.· munin-update: Fix config line continuation hadling· Add patch from munin ticket #828, to suppress \"occasional\" unknown states· to avoid alerts. Thanks to Steve Wilson for the patch!· proxy_plugin: New proxy plugin, that makes it possible for a single Munin· jmx/Uptime: decimal days, not integer - closes #815· nvidia_: fix suggest· linux/vserver*: fix autoconf exit codes· linux/ip_: RE fix to be able to match IPv6 addresses· linux/selinux_avcstat: New plugin from Lars Strand showing selinux stats· Taken from Muninexchange. Thanks to Lars!· linux/lpar_cpu: A plugin to measure IBM PPC hardware virtualization logical· partition CPU usage (made for the platform once called OpenPower)· varnish_: backend_unhealthy is a DERIVE value, note that canonical upstream· is the varnish project· Add simfs\" to linux dfplugins ignore list· linux/buddyinfo multigraph plugin by G?·bor Gomb?·s· Remediate patches from Gentoo that never came upstream.· Prevents possible output on stderr in plugin linux/iostat_ios and corrects· linux/fw_forwarded_local to handle a missing /proc/net/ip_conntrack· linux/fw_forwarded_local: need to dereference the _conntrack_file variable· linux/diskstats: Upstream update, closes #838 #835 #837· linux/ip_: Better matching of IPv6 addresses. Use a single awk command· instead of a mix of awk and grep.· mysql_: fix graph_base error (Closes #840) Patch from G?·bor Gomb?·s· mysql_: plugin suggests wrong values (closes #857)· linux/selinux_avcstat - exit 0 on autoconf· linux/tcp: Add contributed plugin from Tim Small· linux/df_abs: multiple filesystem excludes do not work in df_abs· Thanks to Daniel Reichelt for the patch!· snort*: Add documentation and minor updates· multips_memory: correct printing out raw fieldname,· instead of clean_fieldname, documentation updates· linux/df_abs: Added configuration option to df_abs to Enable/Disable the· graph total (The default is on). Thanks to Daniel Reichelt for the patch,· submitted at http://bugs.debian.org/567895 - adapted, tested· and documented by Tom Feiner· snmp__if_multi: Add env.ifTypeOnly filtering, fix multiple buglets· mailman: Corrected incorrect use of $MUNIN_PLUGSTATE in mailman plugin· amavis: Change amavis mktempfile function to run with backticks instead of· $(command) as it doesnt work correctly piping to sed· exim_mailstats: exim_mailstats doesnt count Completed properly.· Thanks to Wakko Warner for noticing this in http://bugs.debian.org/569621· Deprecated tomcat plugins: Fix in to work properly when only one connector· is availabe http://bugs.debian.org/543523· postfix_mailstats: Fix shell->perl syntax in perl plugin· apt: update description with a pointer to apt_all· jmx/GCCount - fix negative counts on jvm restart (closes #852)· ping_: fix obvious typo (closes #854)