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The "AmazonEC2" page has been changed by Smith Scott: http://wiki.apache.org/hadoop/AmazonEC2?action=diff&rev1=89&rev2=90 1. The script ''create-hadoop-image-remote'' then installs Java, tools required to run Hadoop, and Hadoop itself. Then it configures Hadoop: * In EC2, the local data volume is mounted as ''/mnt'', so logs are written under here. * ''hadoop-init'' is installed as an init script to be run on instance start up. This takes advantage of an EC2 feature called [[http://developer.amazonwebservices.com/connect/entry.jspa?externalID=531&categoryID=100|parameterized launches]]. For Hadoop, this allows the master hostname and the cluster size to be retrieved when the Hadoop instance starts - this information is used to finish the Hadoop configuration. - 1. Finally, ''create-hadoop-image-remote'' bundles the machine as an AMI, and uploads it to S3. (Particular care has to be taken to ensure that no secrets, such as private keys, are bundled in the AMI. See [[http://docs.amazonwebservices.com/AmazonEC2/dg/2006-10-01/public-ami-guidelines.html|here]] [http://www.antianxietymedicationstreatment.com/|Anxiety Medication] for more details.) The AMI is stored in a bucket named by the variable `$S3_BUCKET` and with the name `hadoop-$HADOOP_VERSION`. + 1. Finally, ''create-hadoop-image-remote'' bundles the machine as an AMI, and uploads it to S3. (Particular care has to be taken to ensure that no secrets, such as private keys, are bundled in the AMI. See [[http://docs.amazonwebservices.com/AmazonEC2/dg/2006-10-01/public-ami-guidelines.html|here]] [[http://www.antianxietymedicationstreatment.com/|Anxiety Medication]] for more details.) The AMI is stored in a bucket named by the variable `$S3_BUCKET` and with the name `hadoop-$HADOOP_VERSION`. 1. Control then returns to ''create-hadoop-image'' which registers the image with EC2. === Building a stock Hadoop image ===
