check the rights of .ssh/authorized_keys on the hosts, have to be only read- and writable for the user (including directory) Be sure you copied the right key without line-breaks and fragments. If you have a lot of boxes you could use BCFG2: http://docs.bcfg2.org/
- Alex -- Alexander Lorenz http://mapredit.blogspot.com On Feb 6, 2012, at 10:55 AM, Bing Li wrote: > Dear all, > > I am just starting to learn Hadoop. According to the book, Hadoop in > Action, a common account for each server (masters/slaves) must be created. > > Moreover, I need to create a public/private rsa key pair as follows. > > ssh-keygen -t rsa > > Then, id_rsa and id_rsa.pub are put under $HOME/.ssh. > > After that, the public key is distributed to other nodes and saved in > @HOME/.ssh/authorized_keys. > > According to the book (Page 27), I can login in a remote target with the > following command. > > ssh target (I typed IP address here) > > However, according to the book, no password is required to sign in the > target. On my machine, it is required to type password each time. > > Any affects for my future to configure Hadoop? What's wrong with my work? > > Thanks so much! > Bing
