[INS-40980] Installer has detected that alias names is specified for the following nodes: [dc01x02].
Cause:
This error occurs when password less ssh equivalency between nodes in RAC are not configured properly
Workaround:
Reconfigure passwordless ssh between each nodes and try again
Node 1:
[oracle@dc01x01 .ssh]$ 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):
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:
SHA256:z73dsIGJcYveK5oWf8MhL17BY33Zeo6y/inz7CwC2BQ oracle@dc01x01.localdomain
The key's randomart image is:
+---[RSA 2048]----+
| |
| E |
| . |
| . . . o|
| +S . * ..o|
| . +o.B.* o |
| +=+*.+ .|
| .o=oX= X |
| .ooo**%@ o|
+----[SHA256]-----+
[oracle@dc01x01 .ssh]$ cat id_rsa.pub | ssh dc01x02 'cat >> ~oracle/.ssh/authorized_keys'
The authenticity of host 'dc01x02 (192.168.8.55)' can't be established.
ECDSA key fingerprint is SHA256:pM2hM8K4tOdqZp950VHzK5OOHJ1UmsUEwGpDR53iQd8.
ECDSA key fingerprint is MD5:d0:96:e2:0c:55:9c:2a:35:9b:b1:01:ae:dc:0d:97:6e.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'dc01x02,192.168.8.55' (ECDSA) to the list of known hosts.
oracle@dc01x02's password:
[oracle@dc01x01 .ssh]$ ssh dc01x02
Last login: Wed Sep 15 03:00:38 2021 from dc01x01.localdomain
[oracle@dc01x02 ~]$ ssh dc01x01
Last login: Wed Sep 15 03:01:53 2021 from dc01x02.localdomain
Node 2:
[oracle@dc01x02 .ssh]$ 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):
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:
SHA256:UX7EzIdCOWWG11BRHCMHioFOMbcEoHun/I7ZCebS61M oracle@dc01x02.localdomain
The key's randomart image is:
+---[RSA 2048]----+
| ..++=oB*B+Bo|
| . o+oO+B = o|
| . o .o.=.. |
| . . . . |
| . . .S |
| o oE |
| .=. |
| .oo* . |
| o*+= |
+----[SHA256]-----+
[oracle@dc01x02 .ssh]$ cat id_rsa.pub | ssh dc01x01 'cat >> ~oracle/.ssh/authorized_keys'
oracle@dc01x01's password:
[oracle@dc01x02 .ssh]$
[oracle@dc01x02 .ssh]$ ssh dc01x01
Last login: Wed Sep 15 03:00:57 2021 from dc01x02.localdomain
[oracle@dc01x01 ~]$ ssh dc01x02
Last login: Wed Sep 15 03:01:48 2021 from dc01x01.localdomain