RAC [INS-06003] Failed to setup passwordless SSH connectivity with the following node(s)

• Scenario Preview : We recently find ssh error on during installation. As per my experience only found this error only on open suse 12 server.

• OpenSSH_6.7: ERROR [INS-06003] Failed to setup passwordless SSH connectivity During Grid Infrastructure Install (Doc ID 2111092.1)

• srv1:/u01/grid/sshsetup # vi  /etc/ssh/sshd_config (both nodes)

KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1   

(Doc ID 2111092.1)

• srv1:/u01/grid/sshsetup # service sshd restart (both nodes)
• srv1:/u01/grid/sshsetup # service sshd status

sshd.service - OpenSSH Daemon

   Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: disabled)

   Active: active (running) since Tue 2020-04-21 11:28:18 IST; 20s ago

  Process: 6035 ExecStartPre=/usr/sbin/sshd -t $SSHD_OPTS (code=exited, status=0/SUCCESS)

  Process: 6032 ExecStartPre=/usr/sbin/sshd-gen-keys-start (code=exited, status=0/SUCCESS)

 Main PID: 6039 (sshd)

    Tasks: 1

   CGroup: /system.slice/sshd.service

           └─6039 /usr/sbin/sshd -D

Apr 21 11:28:18 srv1 systemd[1]: Stopped OpenSSH Daemon.

Apr 21 11:28:18 srv1 systemd[1]: Starting OpenSSH Daemon...

Apr 21 11:28:18 srv1 sshd-gen-keys-start[6032]: Checking for missing server keys in /etc/ssh

Apr 21 11:28:18 srv1 sshd[6039]: Server listening on 0.0.0.0 port 22.

Apr 21 11:28:18 srv1 sshd[6039]: Server listening on :: port 22.

Apr 21 11:28:18 srv1 systemd[1]: Started OpenSSH Daemon.

srv1:/u01/grid/sshsetup #