Archive for April, 2009

Monitoring Hadoop Clusters with Ganglia

Apache Hadoop is an open-source implementation of MapReduce. Hadoop users will be happy to know that Hadoop has built-in support for publishing run-time metrics using Ganglia. For more details, visit the GangliaContext page on the Hadoop Wiki or Philip Zeyliger’s blog post on the Cloudera blog. Cloudera offers an Apache 2.0 licensed distribution to make managing Hadoop clusters easier.

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Ganglia 3.1.2 (Langley) Released

The Ganglia Project ( is pleased to announce the official release of Ganglia 3.1.2  The official tarball is available for immediate download at:

For a full description of the bug fixes and enhancements that are included in the 3.1.2 release as well as upgrade information, please see the current release notes at:

Supported platforms:

  • Linux (Fedora/RedHat/CentOS, Debian, Gentoo, SuSE/OpenSuSE)
  • [Open]Solaris
  • FreeBSD
  • NetBSD
  • OpenBSD
  • DragonflyBSD
  • Cygwin (no support for DSO yet)
  • AIX (no support for DSO yet)

Please read all the README, INSTALL and other available documentation ( as a lot of things have changed since version 3.0. Use good deployment practices when upgrading from 3.0.x to make sure that you do not mix gmond 3.0 and 3.1 nodes in the same cluster (as defined by a multicast address or unicast collector node).  The protocol that allows gmond nodes to communicate within the same cluster, has changed.  However the XML packets that are passed between gmond and gmetad have remained compatible from 3.0.x to 3.1.x, allowing a 3.1.x gmetad to continue to pull data from an older 3.0.x gmond cluster.

Ganglia Development Team


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