Unable to do root login even after entering correct root password in solaris 11

Unable to ssh root user even after entering correct root password in solaris 11

After doing OS installation on physical server or ldom/zones, we try to login using root user but sometimes it fails even though we use correct root password. And if we try to login via console using same password then we will be able to login.

This means there is nothing to do with password, something need to be changed in sshd configuration file. Here is the solution:

1.       Note down PermitRootLogin value in /etc/ssh/sshd_config file

1.       Take backup of /etc/ssh/sshd_config file.

#cp -rp /etc/ssh/sshd_config /etc/ssh/sshd_config_15mar2024

 

2.       Edit sshd_config file using vi editor and change PermitRootLogin and PasswordAuthentication value to yes

1

Restart ssh service

Thanks,

Kiren Jadhav

Password less ssh for root user from compute node to all cell nodes

 Password less ssh for root user from compute node to all cell nodes:

Instead of copying the public key from the compute nodes to the autorizedkeys file of all the cell nodes; below command can be used for password less ssh for root user from the compute nodes to all the cell nodes.

Where /opt/oracle.SupportTools/onecommand/cell_group is the file where list of cellnodes is present.

#dcli -g /opt/oracle.SupportTools/onecommand/cell_group -l root -k -s '-o StrictHostKeyChecking=no'  

(Assuming ssh key is already present if not then run command #ssh-keygen -t rsa  )

To Verify password less is happening for all cells using uptime command.

#dcli -g /opt/oracle.SupportTools/onecommand/cell_group -l root uptime

===================================================================================

[root@dbadm01 onecommand]# dcli -g /opt/oracle.SupportTools/onecommand/cell_group -l root -k -s '-o StrictHostKeyChecking=no'

root@celadm01's password:

root@celadm02's password:

celadm01: ssh key added

celadm02: ssh key added

[root@dbadm01 onecommand]#

[root@dbadm01 onecommand]# dcli -g /opt/oracle.SupportTools/onecommand/cell_group -l root uptime

hcprd2celadm01: 12:57:01 up 165 days, 20:52,  0 users,  load average: 1.35, 1.91, 1.92

hcprd2celadm02: 12:57:01 up 165 days, 12:49,  0 users,  load average: 2.91, 2.15, 1.97

[root@dbadm01 onecommand]#

===================================================================================

Password less ssh for root user from compute node to all compute nodes:

Where /opt/oracle.SupportTools/onecommand/dbs_group is the file where list of compute nodes mentioned.

#dcli -g /opt/oracle.SupportTools/onecommand/dbs_group -l root -k -s '-o StrictHostKeyChecking=no'

#dcli -g /opt/oracle.SupportTools/onecommand/dbs_group -l root uptime

Regards,

Kiran Jadhav