11 GR 2 grid Setup "SSH without password problem" on AIX 7.1

Hello

The installer was able to login SSH without password in configuration between the nodes, but when I tried to test it, and then I got the below error:

[INS-06006] Connectivity SSH without password do not put in place between the following nodes: [ud1 UD2].

I tried to install .ssh without password between node1 and node2. It worked.

But when I tried to connect without a password with the Node1 node2 .ssh. It did not work. SSH asked a password.

On node1, were among other id_rsa id_rsa.pub and identity and identity.pub. But on Node2, there was only identities and the identity.pub.

any help will be greatly appreciated.

Thank you

When you configure the RAC, it is a mandatory task to configure connectivity without password SSH (Secure Shell) between the nodes. SSH connectivity configuration is essential among the nodes of a cluster because the YES program uses the ssh and scp commands internally during the installation stage to perform remote operations, in which it copies the software from local to other nodes.

I suggest that you try once more configuration. I give below steps:

(1), log in as the Oracle user on the first node in the cluster (in our example, it will be on the raclinux1) and execute the following sequence of commands:

[orac1e@raclinux1]-$ mkdir ~/.ssh

[orac1e@raclinux1]-$ chmod 700 ~/.ssh

[orac1e@raclinux1]-$/usr/bin/ssh-keygen t rsa

Generate the key pair public/private rsa.

Enter file in which to save the key (/ home/oracle/.ssh/id_rsa):

Enter the password (empty without password): enter same password again:

Your identification has been recorded in /home/oracle/.ssh/id rsa.

Your public key has been saved in home/oracle/.ssh/id_rsa.pub.

The fingerprint of the key is: f0:89:ac:ba:83:31:c4:43:97:3e:9's: a5:60:c1:8e:e6 [email protected]

(2) when the system asks you the location of the key, accept the default settings by pressing the Enter key. Once this configuration is done on the first node, repeat the same steps on the rest of the nodes (in our example, repeat the same step on the raclinux2 node).

(3) now, switch back to the first node (raclinux1) and run the following command to add the authorization keys. After you add the authorization keys, copy the file authorized_keys to other nodes by using the scp command, and enter Yes when prompted.

[orac1e@raclinux1]-$ cd ~/.ssh

[orac1e@raclinux1]-$ cat id rsa.pub > authorized_keys]

[orac1e@raclinux1]-$ scp raclinux2:/home/oracle/.ssh authorized_keys

The authenticity of host ' raclinux2 (192.168.2.202) cannot be established.

Of the key RSA is 52:13:31:e8: this: ec:47:b8:06:09:4 b: c9:aa:c5:35:81.

Are you sure you want to continue connecting (yes/no)? Yes

WARNING: Permanently added 'raclinux2, 192.168.2.202' (RSA) to the list of known hosts.

Oracle@raclinux2's password:

authorized keys 100% 406 0.4K8/s 00:00

(4) now go back to the second node, (raclinux2) and run the following command:

[orac1e@raclinux2]-$ cd ~/.ssh

[orac1e@raclinux2]-$ cat id rsa.pub > authorized_keys]

[orac1e@raclinux2]-$ scp raclinux1:/home/oracle/.ssh authorized_keys

The authenticity of host ' raclinux2 (192.168.2.201) cannot be established.

Of the key RSA is 52:13:31:e8: this: ec:47:b8:06:09:4 b: c9:aa:c5:35:81.

Are you sure you want to continue connecting (yes/no)? Yes

WARNING: Permanently added 'raclinux2, 192.168.2.201' (RSA) to the list of known hosts.

Oracle@raclinux1's password:

authorized keys 100% 406 0.4K8/s 00:00

(5) after you add the authorization on the second node keys, copy the file to the other nodes using the command scp, as shown in the previous example and enter Yes when you are prompted.

(6) after setting up the SSH installation successfully through all the nodes, we will perform the following test on each node, from the first node to connect without password between all nodes to follow the recommendations of the Oracle:

SSH raclinux1 date

SSH raclinux2 date

SSH raclinux1-private date

SSH raclinux2-private date

SSH raclinux1 - sjh.com date

SSH raclinux2 - sjh.com date

-taking of Oracle 11g R1/R2 Real Application Clusters Essentials - Ben Prusinski, Syed Jaffer Hussain

Tags: Database

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