you should append id_dsa.pub to ~/.ssh/authorized_keys on the other computers from the cluster. if your home directory is shared by all of them (e.g., you're mounting /home/$user using NFS), "cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys" might work. however, if it isn't shared, you might use 'ssh-copy-id' to all your nodes (or append id_dsa.pub manually).
2009/4/2 Puri, Aseem <aseem.p...@honeywell.com> > Hi Rasit, > > Now I got a different problem when I start my Hadoop server the slave > datanode do not accept password. It gives message permission denied. > > I have also use the commands on all m/c > > $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa > $ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys > > But my problem is not solved. Any suggestion? > > > -----Original Message----- > From: Rasit OZDAS [mailto:rasitoz...@gmail.com] > Sent: Thursday, April 02, 2009 6:49 PM > To: core-user@hadoop.apache.org > Subject: Re: Cannot resolve Datonode address in slave file > > Hi, Sim, > > I've two suggessions, if you haven't done yet: > > 1. Check if your other hosts can ssh to master. > 2. Take a look at logs of other hosts. > > 2009/4/2 Puri, Aseem <aseem.p...@honeywell.com> > > > > > Hi > > > > I have a small Hadoop cluster with 3 machines. One is my > > NameNode/JobTracker + DataNode/TaskTracker and other 2 are > > DataNode/TaskTracker. So I have made all 3 as slave. > > > > > > > > In slave file I have put names of all there machines as: > > > > > > > > master > > > > slave > > > > slave1 > > > > > > > > When I start Hadoop cluster it always start DataNode/TaskTracker on last > > slave in the list and do not start DataNode/TaskTracker on other two > > machines. Also I got the message as: > > > > > > > > slave1: > > > > : no address associated with name > > > > : no address associated with name > > > > slave1: starting datanode, logging to > > /home/HadoopAdmin/hadoop/bin/../logs/hadoo > > > > p-HadoopAdmin-datanode-ie11dtxpficbfise.out > > > > > > > > If I change the order in slave file like this: > > > > > > > > slave > > > > slave1 > > > > master > > > > > > > > then DataNode/TaskTracker on master m/c starts and not on other two. > > > > > > > > Please tell how I should solve this problem. > > > > > > > > Sim > > > > > > > -- > M. Raşit ÖZDAŞ > -- Guilherme msn: guigermog...@hotmail.com homepage: http://germoglio.googlepages.com
