Hi Saptarshi, The group permissions open the firewall ports to enable access, but there are no shared keys on the cluster by default. See https://issues.apache.org/jira/browse/HADOOP-4131 for a patch to the scripts that shares keys to allow SSH access between machines in the cluster.
Cheers, Tom On Sat, Jun 20, 2009 at 7:09 AM, Saptarshi Guha<saptarshi.g...@gmail.com> wrote: > Hello, > I have a cluster with 1 master and 1 slave (testing). In the EC2 > scripts, in the hadoop-ec2-init-remote.sh file, I wish to copy a file > from > the MASTER to the CLUSTER i.e in the slave section > > scp $MASTER_HOST:/tmp/v /tmp/v > > However, this didnt work and when I logged in, ssh'd to the slave and > tried the command, I got the following error: > > Permission denied (publickey,gssapi-with-mic) > > Yet, the group permissions appear to be valid i.e > ec2-authorize $CLUSTER_MASTER -o $CLUSTER -u $AWS_ACCOUNT_ID > ec2-authorize $CLUSTER -o $CLUSTER_MASTER -u $AWS_ACCOUNT_ID > > So I don't see why I can't ssh into the MASTER group from a slave. > > Any suggestion as to where I'm going wrong? > Regards > Saptarshi > > P.S I know I can copy a file from S3, but would like to know what is > going on here. >
