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/____/ Distributed Monitoring System
The Ganglia Development Team is pleased to announce the release of
Ganglia 3.0.0 (Kittyhawk) which is available for immediate
download from http://ganglia.info/downloads.php and features...
Windows Support
Ganglia now runs on Windows. There is support for all standard
metrics except for "disk_free", "disk_total", "max_part_used"
and "cpu_num" (support will be added in future releases).
We have also created a windows installer which allows you to
easily add the ganglia monitoring service to any Windows
NT/2000/XP machine.
Currently, you are required to use unicast messaging since
there is no support for multicast on windows at this time
(although multicast support will be added in the future).
Special thanks to Carlo Marcelo Arenas Belon for providing
metric code which makes native windows calls to collect the
majority of metrics.
Unicast Support
Ganglia now allows you to send status messages over unicast
routes instead of a single multicast channels. This capability
gives you greater flexibility in building your monitoring
overlay and allows ganglia to run on networks that are not
multicast-enabled.
Moreover, you can specify as many unicast and multicast
channels as you like. Whenever a message is sent each and
every channel will receive the message. This feature gives you
much more power in grouping machines.
Gmetric commandline tool parses the configuration file
Gmetric now parses the gmond configuration file and sends
metric information to all unicast and multicast udp channels
specified.
Apache Portable Runtime library
The Apache Portable Runtime (APR) library is the library
underlying the Apache web server which provide memory pools,
networking io, hash tables and arrays in a very portable
manner. APR now serves as the heart of the new ganglia
monitoring daemon to expand portability, improve reliability
and provide new features like IPv6 address support.
More powerful and flexible configuration
The configuration file for "gmond" has changed. This change
was necessary to provide you with a more flexible and powerful
framework in which to configure gmond. There is a man page for
"gmond.conf" (see "man gmond.conf") which explains the new
format.
To convert an old 2.5.x configuration file to the new format
simply run
% gmond --convert old.conf > new.conf
This new format allows you to specify multiple unicast and
multicast channels to send and receive monitoring information,
provides much more flexible access control lists, and allows
you the power to specify exactly what metric you want to
collect on each machine.
Special thanks to the developers of confuse
(http://www.nongnu.org/confuse/) for building such a great
file parser.
Configuration analysis gives bandwidth usage
There is a new option for gmond which allows you to get an
estimate of the bandwidth that gmond will use given a
particular configuration.
% ./gmond -b /etc/gmond.conf
7.945789 bytes/sec
This feature allows you to budget how much bandwidth you will
use for monitoring your machines for a given configuration
(see "man gmond.conf").
More powerful Access Control mechanism
In the old 2.5.x world, the only access control mechanism
available was a list of "trusted_hosts".
Ganglia now supports very elaborate access control lists that
allow you to specify an ip and mask (for filtering subnets)
and outline the default policy (see "man gmond.conf" for
details).
You have complete control over metric collection
The new configuration file format allows you to specify
exactly which metrics are collected. You can also specify
custom time and value thresholds per metric at runtime instead
of needing to modify source at compile time. This flexibility
will allow us to easily add alert mechanism in the near
future.
RPM names were renamed on Linux
The RPM names have been renamed to make them simpler
ganglia-monitor-core-gmond => ganglia-gmond
ganglia-monitor-core-gmetad => ganglia-gmetad
ganglia-monitor-core-lib => ganglia-devel
ganglia-webfrontend => ganglia-web
Major cleanup of ganglia-devel
Lots of unnecessary headers where removed from libganglia and
a ganglia-config script was added for application that link
against ganglia (see ganglia-config --help for details).
ganglia-devel now installs only the following files
/usr/bin/ganglia-config
/usr/include/ganglia.h
/usr/lib/libganglia.a
/usr/lib/libganglia.la
/usr/lib/libganglia.so
Solaris gmond doesn't have to be run as root anymore
Special thanks to Adeyemi Adesanya for switching the Solaris
metric gathering code from kvm to kstat, eliminating the need
to run gmond as root. Gmond on Solaris can now setuid to any
user that you like (see "man gmond.conf" for details).
Mixing different OSes on same channel is okay now
There was a bug in 2.5.x that caused Solaris and HPUX hosts to
interpret metric data from other operating systems
incorrectly. You can now mix any and all supported operating
systems on a single communication channel with no problems.
Fixed the XML DTD
In certain circumstances, gmond would export invalid XML
because of too restrictive of a DTD. The DTD has been updated
to prevent this error.
Darwin metric collection greatly improved
Darwin now supports "mem_total", "bytes_in", "bytes_out",
"pkts_in", "pkts_out", "proc_run", "disk_total", "disk_free"
and "part_max_used" metrics. Special thanks to Sebastian
Hagedorn, Glen Beane, Joshua Durham, Eric Wages and Brian
Peterson for their work on MacOS X.
Fixed bug that required Solaris systems to run in debug mode
Gmond wasn't properly daemonizing on certain Solaris systems
requiring that it be run in debug_mode with the output
redirected to "/dev/null". This bug no longer exists.
Fixed a memory leak on FreeBSD
Brooks Davis fixed a memory leak reported by Glen Beane in
find_disk_space() and a potential memory leak in
makenetvfslist(). General clean up of makenetvfslist().
All metric collection functions are in a standalone library
All the metric code has been moved to "./srclib/libmetrics" in
the ganglia distribution. Special Thanks to Martin Knoblauch
for his hard work in cleaning up the metric collection code.
Potential memory leak fixed in gmetad
Marcelo Veiga Neves determined how a memory leak was possible
for metrics sent via gmetric. Federico Sacerdoti applied a fix
to prevent any leaks.
All web scripts are in the ./web directory of the distribution now
The PHP web scripts have been incorporated into the main
ganglia distribution. Minor bug fixed added by Ramon Bastiaans
and Jason Smith.
All communication protocols are now defined in ./lib/protocol.x
To help in integrating ganglia communications into other
applications, all XDR communication formats are defined in
"./lib/protocol.x". This XDR description file can be parsed by
"rpcgen", for example, to build XDR code for sending and
receiving status messages.
Added a --foreground flag to gmond
Allows you to force gmond to run in the foreground.
Gmetad on Solaris bug fixed
David Wood fixed a bug creating directories on Solaris.
We have deployed a new bugzilla service at
http://bugzilla.ganglia.info/. This site was created for you to
submit bug reports, feature requests and upload patches for
ganglia.
If you have found ganglia to be useful in your organization,
please consider making a donation to the project at
http://sourceforge.net/donate/index.php?group_id=43021
Thanks for using Ganglia!
The Ganglia Development Team
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