Hi Mobarak Hosen Shakil
Thanks for your reply, No this not happened after fresh installation.
The gluu server was already installed and it was working fine. 2 days ago i tried login into gluu server using **/sbin/gluu-serverd login** command but suddenly i started getting this error. After searching on internet i tried below commands which i found on your support portal.
ssh-keygen -b 2048 -t rsa -f /etc/gluu/keys/gluu-console -q -N ""
cat /etc/gluu/keys/gluu-console.pub > /opt/gluu-server/root/.ssh/authorized_keys
Even after trying above commands i am getting same issue.
Can you please help us to resolve this issue?