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The following page has been changed by TomWhite: http://wiki.apache.org/lucene-hadoop/AmazonEC2 The comment on the change is: Add link thread other dynamic DNS providers ------------------------------------------------------------------------------ * The default value for `S3_BUCKET` (`hadoop-ec2-images`) is for public images. You normally only need to change this if you want to use a private image you have built yourself. * Hadoop cluster variables (`GROUP`, `MASTER_HOST`, `NO_INSTANCES`) * `GROUP` specifies the private group to run the cluster in. Typically the default value is fine. - * `MASTER_HOST` is the hostname of the master node in the cluster. You need to set this to be a hostname that you have DNS control over - it needs resetting every time a cluster is launched. Services such as [http://www.dyndns.com/services/dns/dyndns/ DynDNS] make this fairly easy. + * `MASTER_HOST` is the hostname of the master node in the cluster. You need to set this to be a hostname that you have DNS control over - it needs resetting every time a cluster is launched. Services such as [http://www.dyndns.com/services/dns/dyndns/ DynDNS] and [http://developer.amazonwebservices.com/connect/thread.jspa?messageID=61609#61609 the like] make this fairly easy. * `NO_INSTANCES` sets the number of instances in your cluster. You need to set this. Currently Amazon limits the number of concurrent instances to 20. == Running a job on a cluster ==
