Just a quick reminder on how to setup a simple password-less SSH login on your servers.
You might get lost in all documentation that is published on the topic. Here is what i execute to make it work !
Actions for the source server :
oracle@db $ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/oracle/.ssh/id_rsa):
Enter passphrase (empty for no passphrase): [LEAVE EMPTY]
Enter same passphrase again: [LEAVE EMPTY]
Your identification has been saved in /home/oracle/.ssh/id_rsa.
Your public key has been saved in /home/oracle/.ssh/id_rsa.pub.
The key fingerprint is:
xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx oracle@db.example.nl
oracle@db $
Resulting in ;
oracle@db $ ll
total 12
-rw——- 1 oracle oinstall 1675 Jul 3 11:33 id_rsa
-rw-r–r– 1 oracle oinstall 401 Jul 3 11:33 id_rsa.pub
-rw-r–r– 1 oracle oinstall 1138 Jul 3 10:38 known_hosts
oracle@db $
Actions for the remote server :
Now copy the content of the id_rsa.pub file in the authorized_keys on the server( db2 in my case ) you want to connect to. The location of the the file is /home/oracle/.ssh/authorized_keys
That it !
Now we can connect without the use of a password ;
oracle@db $ ssh db2
Last login: Fri Jul 3 11:37:41 2009 from db2.example.nl
oracle@db2$
I use this setup to be able to execute os command’s from within my script on a remote server.
