Thanks, Vaibhav. That was helpful. I am able to scp from my local machine after I opened port 22 under my security group.
But my cluster is still not starting as expected. I mean... on my Master when I run: ./start-all.sh I get messages saying... 10.252.xxx.xxx: Permission denied (publickey). where 10.252.xxx.xxx is the ip address of my Slave. I can ssh from my Slave to master if I do this: ssh -i <keypairname>.pem <Master's ip address> Any suggestions? Thanks for your help. On Mon, Nov 23, 2009 at 8:10 AM, Vaibhav Puranik <[email protected]> wrote: > In order to use scp from your machine to an ec2 instance you need to use > scp > -i and give it the path of your keypair. > > scp -i /path/my/ec2/keypair <souce> <destination> > > Secondly in order to configure an ec2 cluster for Hadoop, you need to make > a > security group (let's call it hadoop) and give hadoop access to hadoop. > > You can read more about security groups here - > > http://somic.org/2009/09/21/security-groups-most-underappreciated-feature-of-amazon-ec2/ > > You also need to make sure that you can ssh from all the slaves to master > without specifying password. > > Regards, > Vaibhav Puranik > GumGum > > On Sun, Nov 22, 2009 at 8:36 AM, Something Something < > [email protected]> wrote: > > > Seems like I am not explaining my problem correctly. > > > > My Key Pair file is on my machine at work which is behind a corp > firewall. > > As such I can't 'scp' from the ec2 instance to my local machine at work > to > > 'get' the file. So I need a way to 'send' a file from my machine to the > > ec2 > > instance. I tried using 'scp' (from my machine at work) to the ec2 > machine > > but it says "Permission denied". Does this make sense? > > > > May be I need to use the command line tools for EC2. I am looking into > > those right now, but if there's a better/easier way, please let me know. > > > > Thanks once again for your help. > > > > > > On Sun, Nov 22, 2009 at 8:19 AM, Jeff Zhang <[email protected]> wrote: > > > > > The ssh is installed on ec2 by default, otherwise you have no way to > > login > > > to ec2 > > > > > > > > > Jeff Zhang > > > > > > > > > > > > On Sun, Nov 22, 2009 at 8:09 AM, Something Something < > > > [email protected]> wrote: > > > > > > > As per Wikipedia (http://en.wikipedia.org/wiki/Secure_copy) "It > does > > so > > > > by > > > > connecting to the host using SSH and there executes an SCP server > > (scp)". > > > > > > > > So if SSH isn't working SCP won't work, either. In any case I tried > to > > > scp > > > > but getting "Permission denied (public key)". > > > > > > > > Any other ideas? Thanks. > > > > > > > > > > > > On Sat, Nov 21, 2009 at 6:12 PM, Jeff Zhang <[email protected]> > wrote: > > > > > > > > > You should scp the key-pair to EC2 machine > > > > > > > > > > Jeff Zhang > > > > > > > > > > On Sat, Nov 21, 2009 at 4:57 PM, Something Something < > > > > > [email protected]> wrote: > > > > > > > > > > > Trying to start a Hadoop cluster on EC2. (Yes, Cloudera's > > > distribution > > > > > > works well, but trying to do this myself so I can learn what's > > > > happening > > > > > > behind the scene.) > > > > > > > > > > > > I have a Master & a Slave. When I start HDFS on the master, I > get > > a > > > > > > message > > > > > > saying "10.xxx.xxx.xxx (Permission denied)" - where 10.xxx is IP > > > > address > > > > > of > > > > > > the slave. > > > > > > > > > > > > Basic problem (I think) is that I can't ssh from the master EC2 > > > > instance > > > > > to > > > > > > the Slave EC2 instance. What's the best way to fix it? I think > I > > > need > > > > > the > > > > > > "Key Pair" file on my master. I have a key pair on my local > > machine, > > > > but > > > > > > how do I transfer it to the EC2 machine? (I know, I know, I > > agree.. > > > I > > > > am > > > > > > dumb :) Should I FTP it? > > > > > > > > > > > > Please help. Thanks. > > > > > > > > > > > > > > > > > > > > >
