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On my linux server I run the command:
sshpass -p 'password' rsync -avz /source/folder/ [email protected]:/dest/folder
When I run the command without sshpass it will provide me with prompts for authenticity of host and the password.
I need some equivalent to "-o StrictHostKeyChecking=no" (which I use for ssh) that will allow me to run this with no prompts or errors.
Everything I saw from googling was about ssh throwing the error not rsync.
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The host key is used by the client to decrypt an authentication message sent from the server when connecting. The basic purpose of the host key is to ensure that when you connect to a remote host, it is actually the host that you intended to connect to.
ssh-keyscan uses non-blocking socket I/O to contact as many hosts as possible in parallel, so it is very efficient. For successful host key collection, you do not need login access to the machines that are being scanned, nor does the scanning process involve any encryption.
If you want to connect to new server, which public key is not yet in your ~/.ssh/knonwn_hosts, you should not skip this only security check, but rather store the server host key in the known_hosts manually, verify that it is correct and then make the automatic check working.
Simplest way to get the known hosts populated with the server host key is using
ssh-keyscan server-ip >> ~/.ssh/known_hosts
After that, you should not need to use the StrictHostKeyChecking=no workaround.
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