the ganglia monitoring core v2.0.3 is available for download from
http://sourceforge.net/project/showfiles.php?group_id=43021
here is the Changelog
* increased the speed of the host security check for the XML port
* added commandline options for almost all compile-time opts for gmond
* added a --safe_host option to allow a host outside of the multicast
channel to connect
* now gmond strips all quotes (") from gmetric data to keep XML well-formed
* improved the self-organizing behavior of the gmonds
running "gmond --help" will print the available commandline options...
Ganglia MONitoring Daemon (gmond) v2.0.3
=-------===--------=----------------------
-h, --help
this help message
-v, --version
prints the version and exits
-c, --mcast_channel
set the multicast channel that gmond sends/receives messages to
default: 239.2.11.71
-p, --mcast_port
set the multicast port the gmond sends/receives messages to
default: 8649
-i, --mcast_if
set the interface gmond is to multicast on
default: first interface e.g. "eth0"
-x, --xml_port
set the port gmond will answer XML requests on
default: 8649
-s, --safe_host
specify a host outside of the multicast group (239.2.11.71)
that is still allowed to connect to the XML port
note: only ip address (not hostname) is allowed
i hope you'll find that these commandline options will give you more
flexibility in setting up gmond. most of all the options are
self-explanatory but i want explain more about the safe_host option.
the "-s, --safe_host" option...
to understand this option you need to understand the gmond security model.
previously, the XML port on gmond would only respond to requests from
localhost (127.0.0.1) and any hosts multicasting on the ganglia channel.
now, you can use the --safe_host option to add a host OUTSIDE of the
multicast network. this is helpful is you want to grab data from a remote
gmond that you cannot multicast to. this option will allow you to link
together multiple clusters across unicast routers. in future releases, i
will have a zlib option to compress XML output with a common dictionary to
reduce the XML output significantly.
brent chun and i have also begun the work of bringing together all the
pieces of the ganglia execution environment into a release. some
highlights of the execution environment include: open XML interface,
authentication using a single RSA key pair (no user keys to manage! the
signing agent passes user credentials across unix domain sockets ), rich
API for developers, load-balancing and global process table built on
ganglia monitoring core, fault-detection and more.
-matt
