RE: PostgreSQL Streaming replication on two diff networks

Everything is good for the ssh connectivity from the slave to the master but not from the master to the slave.

On the master :

-bash-4.2$ ssh postgres@10.0.2.67 (slaveIP)

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

-bash-4.2$​

-bash-4.2$ ssh-copy-id -i id_rsa.pub postgres@10.0.2.67
/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
-bash-4.2$

--------

On the slave : 

-bash-4.2$ ssh postgres@10.1.24.13 (masterIP)

postgres@10.1.24.13's password: 

Last failed login: Tue Jun  5 10:10:19 EDT 2018 from slave on ssh:notty

There were 44 failed login attempts since the last successful login.

Last login: Tue Jun  5 09:48:42 2018 from slave

-bash-4.2$ exit

logout​