SSH Password Less Access between Windows and WSL for Barman Backups

[aksrin...@gmail.com]

Hello,

I have a requirement where i have installed PostgreSQL database server and WSL (Ubuntu 22.0.4) set up installed on a windows machine. I have installed the Barman inside WSL for taking PostgreSQL backups installed on a windows machine. I have configured SSH between the Barman user in WSL and the Windows system user present in the host machine by copying the SSH keys between them.

However, I'm still being prompted for passwords when accessing either system from the other via SSH.

How can I achieve password less SSH access between Windows and WSL to streamline my Barman backup process?

[Michał Kępczyński]

Check permission. 

The .ssh directory permissions should be 700 (drwx------).  The public key (.pub file) should be 644 (-rw-r--r--). The private key (id_rsa) on the client host, and the authorized_keys file on the server, should be 600 (-rw-------)

Michał

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[aksrin...@gmail.com]

I tried setting these permissions but it is still asking the password when trying to connect from WSL to Windows host and Windows host to WSL too.. 

[Michał Kępczyński]

Can you show me the output: ls -la ~/.ssh and paste command which you use to ssh to other machine?

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Michał Kępczyński

[Martin Marques]

Hi,

Why are you trying to set up an ssh connection between the WSL node
and the Windows machine hosting Postgres? There is no reason
whatsoever as rsync backups won't work with Windows and if you want to
copy files via archive_command the ssh connection would be in the
other direction.

In any case, this is not a question for a Barman forum, but for a ssh
or WSL forum.

Kind regard, Martín