[root@node1 ~]# su - oraclenode1-> env | grep ORAORACLE_UNQNAME=devdbORACLE_SID=devdb1ORACLE_BASE=/u01/app/oracleORACLE_HOSTNAME=node1.localdomainORACLE_TERM=xtermORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1node1-> pwd/home/oraclenode1-> mkdir ~/.sshnode1-> chmod 700 ~/.sshnode1-> ls -altotal 44drwx—— 4 oracle oinstall 4096 Apr 24 10:47 .drwxr-xr-x 4 root   root     4096 Apr 24 09:41 ..-rw——- 1 oracle oinstall    5 Apr 24 10:43 .bash_history-rw-r–r– 1 oracle oinstall   33 Apr 24 09:41 .bash_logout-rw-r–r– 1 oracle oinstall  823 Apr 24 09:41 .bash_profile-rw-r–r– 1 oracle oinstall  124 Apr 24 09:41 .bashrc-rw-r–r– 1 oracle oinstall  515 Apr 24 09:41 .emacsdrwxr-xr-x 4 oracle oinstall 4096 Apr 24 09:41 .mozilladrwx—— 2 oracle oinstall 4096 Apr 24 10:47 .ssh-rw-r–r– 1 oracle oinstall  658 Apr 24 09:41 .zshrcnode1-> ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/home/oracle/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: 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:4a:bd:22:4c:cc:6a:33:ae:5a:de:7d:7c:8b:77:9e:81 oracle@node1.localdomainnode1-> ssh-keygen -t dsa Generating public/private dsa key pair.Enter file in which to save the key (/home/oracle/.ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/oracle/.ssh/id_dsa.Your public key has been saved in /home/oracle/.ssh/id_dsa.pub.The key fingerprint is:8b:50:73:41:03:ad:1c:59:25:aa:40:1c:c9:5e:03:99 oracle@node1.localdomainnode1-> 

[root@node2 ~]# su - oraclenode2-> env|grep ORAORACLE_UNQNAME=devdbORACLE_SID=devdb2ORACLE_BASE=/u01/app/oracleORACLE_HOSTNAME=node2.localdomainORACLE_TERM=xtermORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1node2-> pwd/home/oraclenode2-> ls -altotal 40drwx—— 3 oracle oinstall 4096 Apr 24 10:45 .drwxr-xr-x 4 root   root     4096 Apr 24 10:44 ..-rw——- 1 oracle oinstall   10 Apr 24 10:49 .bash_history-rw-r–r– 1 oracle oinstall   33 Apr 24 10:44 .bash_logout-rw-r–r– 1 oracle oinstall  823 Apr 24 10:44 .bash_profile-rw-r–r– 1 oracle oinstall  124 Apr 24 10:44 .bashrc-rw-r–r– 1 oracle oinstall  515 Apr 24 10:44 .emacsdrwxr-xr-x 4 oracle oinstall 4096 Apr 24 10:44 .mozilla-rw-r–r– 1 oracle oinstall  658 Apr 24 10:44 .zshrcnode2-> mkdir ~/.sshnode2-> chmod 770 ~/.ssh/node2-> ls -altotal 44drwx—— 4 oracle oinstall 4096 Apr 24 10:49 .drwxr-xr-x 4 root   root     4096 Apr 24 10:44 ..-rw——- 1 oracle oinstall   10 Apr 24 10:49 .bash_history-rw-r–r– 1 oracle oinstall   33 Apr 24 10:44 .bash_logout-rw-r–r– 1 oracle oinstall  823 Apr 24 10:44 .bash_profile-rw-r–r– 1 oracle oinstall  124 Apr 24 10:44 .bashrc-rw-r–r– 1 oracle oinstall  515 Apr 24 10:44 .emacsdrwxr-xr-x 4 oracle oinstall 4096 Apr 24 10:44 .mozilladrwxrwx— 2 oracle oinstall 4096 Apr 24 10:49 .ssh-rw-r–r– 1 oracle oinstall  658 Apr 24 10:44 .zshrcnode2-> ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/home/oracle/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: 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:a0:64:81:a6:12:b2:18:4e:01:c3:bd:9d:f6:bb:55:b0 oracle@node2.localdomainnode2-> ssh-keygen -t dsaGenerating public/private dsa key pair.Enter file in which to save the key (/home/oracle/.ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/oracle/.ssh/id_dsa.Your public key has been saved in /home/oracle/.ssh/id_dsa.pub.The key fingerprint is:85:56:69:73:74:a3:ef:5b:88:d7:6d:ef:90:03:b6:72 oracle@node2.localdomainnode2-> 

node1-> iduid=1101(oracle) gid=1000(oinstall) groups=1000(oinstall),1201(asmdba),1300(dba),1301(oper)node1-> pwd/home/oraclenode1-> cat ~/.ssh/id_rsa.pub >>~/.ssh/authorized_keysnode1-> cat ~/.ssh/id_dsa.pub >>~/.ssh/authorized_keys node1-> ssh node2 cat ~/.ssh/id_rsa.pub >>~/.ssh/authorized_keys The authenticity of host ‘node2 (172.16.0.192)‘ can‘t be established.RSA key fingerprint is a7:6b:2c:2d:fb:c3:ff:33:af:92:cd:7b:99:3b:cf:3a.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node2,172.16.0.192‘ (RSA) to the list of known hosts.oracle@node2‘s password: node1-> ssh node2 cat ~/.ssh/id_dsa.pub >>~/.ssh/authorized_keys oracle@node2‘s password: node1-> scp ~/.ssh/authorized_keys node2:~/.ssh/authorized_keys oracle@node2‘s password: authorized_keys       100% 2040     2.0KB/s   00:00  node1-> 

node1-> iduid=1101(oracle) gid=1000(oinstall) groups=1000(oinstall),1201(asmdba),1300(dba),1301(oper)node1-> ssh node1 dateThe authenticity of host ‘node1 (172.16.0.191)‘ can‘t be established.RSA key fingerprint is 16:c2:67:cd:73:dd:b7:8b:f4:07:ef:e0:fb:36:34:3e.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node1,172.16.0.191‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:15 CST 2012node1-> ssh node2 dateTue Apr 24 11:28:18 CST 2012node1-> ssh node1-priv dateThe authenticity of host ‘node1-priv (192.168.94.11)‘ can‘t be established.RSA key fingerprint is 16:c2:67:cd:73:dd:b7:8b:f4:07:ef:e0:fb:36:34:3e.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node1-priv,192.168.94.11‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:25 CST 2012node1-> ssh node2-priv dateThe authenticity of host ‘node2-priv (192.168.94.12)‘ can‘t be established.RSA key fingerprint is a7:6b:2c:2d:fb:c3:ff:33:af:92:cd:7b:99:3b:cf:3a.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node2-priv,192.168.94.12‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:30 CST 2012node1-> ssh node1.localdomain dateThe authenticity of host ‘node1.localdomain (172.16.0.191)‘ can‘t be established.RSA key fingerprint is 16:c2:67:cd:73:dd:b7:8b:f4:07:ef:e0:fb:36:34:3e.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node1.localdomain‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:39 CST 2012node1-> ssh node2.localdomain dateThe authenticity of host ‘node2.localdomain (172.16.0.192)‘ can‘t be established.RSA key fingerprint is a7:6b:2c:2d:fb:c3:ff:33:af:92:cd:7b:99:3b:cf:3a.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node2.localdomain‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:46 CST 2012node1-> ssh node2-priv.localdomain dateThe authenticity of host ‘node2-priv.localdomain (192.168.94.12)‘ can‘t be established.RSA key fingerprint is a7:6b:2c:2d:fb:c3:ff:33:af:92:cd:7b:99:3b:cf:3a.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node2-priv.localdomain‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:52 CST 2012node1-> ssh node1-priv.localdomain dateThe authenticity of host ‘node1-priv.localdomain (192.168.94.11)‘ can‘t be established.RSA key fingerprint is 16:c2:67:cd:73:dd:b7:8b:f4:07:ef:e0:fb:36:34:3e.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘node1-priv.localdomain‘ (RSA) to the list of known hosts.Tue Apr 24 11:28:59 CST 2012

node1-> ssh node1 dateTue Apr 24 11:29:02 CST 2012node1-> ssh node2 dateTue Apr 24 11:29:07 CST 2012node1-> ssh node1-priv dateTue Apr 24 11:29:13 CST 2012node1-> ssh node2-priv dateTue Apr 24 11:29:18 CST 2012node1-> ssh node2-priv.localdomain dateTue Apr 24 11:29:27 CST 2012node1-> ssh node1-priv.localdomain dateTue Apr 24 11:29:33 CST 2012node1-> 

node2-> iduid=1101(oracle) gid=1000(oinstall) groups=1000(oinstall),1201(asmdba),1300(dba),1301(oper)node2-> pwd/home/oraclenode2-> ssh node1 dateTue Apr 24 11:32:06 CST 2012node2-> ssh node2 dateTue Apr 24 11:32:09 CST 2012node2-> ssh node1-priv dateTue Apr 24 11:32:14 CST 2012node2-> ssh node2-priv dateTue Apr 24 11:32:17 CST 2012node2-> ssh node1.localdomain dateTue Apr 24 11:32:26 CST 2012node2-> ssh node2.localdomain dateTue Apr 24 11:32:29 CST 2012node2-> ssh node1-priv.localdomain dateTue Apr 24 11:32:39 CST 2012node2-> ssh node2-priv.localdomain dateTue Apr 24 11:32:43 CST 2012node2->