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Issues making SSH non-Interactive

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Top Forums Shell Programming and Scripting Issues making SSH non-Interactive
# 1  
Old 03-05-2018
Hammer & Screwdriver Issues making SSH non-Interactive
I fire the rsyn command as below:

Code:
rsync --delay-updates -F --compress --archive -e "/usr/bin/ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"  user1@myhost.server.com:/tmp/jarexplorer-0.7.jar /web/admin/data/

The above command get interpreted as below:
Code:
ssh -vvv -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=user1 -o ConnectTimeout=10 myhost.server.com

Output:
Quote:
The authenticity of host 'myhost.server.com (101.12.52.70)' can't be established.
ECDSA key fingerprint is ed:b5:db:e8:b5:f2:3f:b3:38:17:1a:ac:b8:02:ba:30.
Are you sure you want to continue connecting (yes/no)
I am getting the authenticity prompt despite passing the non-interactive parameters using flag -o

I have added the public key to authorized_keys only and NOT to known_hosts.
Code:
 uname -a
Linux myhost.server.com 3.10.0-693.17.1.el7.x86_64 #1 SMP Sun Jan 14 10:36:03 EST 2018 x86_64 x86_64 x86_64 GNU/Linux

Can you please suggest what is wrong with my rsync command ?
# 2  
Old 03-05-2018
If you type 'yes' just once, it will remember that host.
# 3  
Old 03-05-2018
Quote:
Originally Posted by mohtashims
I fire the rsyn command as below:

Code:
rsync --delay-updates -F --compress --archive -e "/usr/bin/ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"  user1@myhost.server.com:/tmp/jarexplorer-0.7.jar /web/admin/data/

The above command get interpreted as below:
Code:
ssh -vvv -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=user1 -o ConnectTimeout=10 myhost.server.com

Output:
I am getting the authenticity prompt despite passing the non-interactive parameters using flag -o

I have added the public key to authorized_keys only and NOT to known_hosts.
Code:
 uname -a
Linux myhost.server.com 3.10.0-693.17.1.el7.x86_64 #1 SMP Sun Jan 14 10:36:03 EST 2018 x86_64 x86_64 x86_64 GNU/Linux

Can you please suggest what is wrong with my rsync command ?
If you are inferring that the ssh part in the rsync command is equivalent to the stand alone ssh command, that is not accurate, they are not equivalent nor synonymous, the options are not the same.

If you do not want to show, the option is StrictHostKeyChecking=no as it shown in the rsync line.


Code:
The authenticity of host 'myhost.server.com (101.12.52.70)' can't be established.
ECDSA key fingerprint is ed:b5:db:e8:b5:f2:3f:b3:38:17:1a:ac:b8:02:ba:30.
Are you sure you want to continue connecting (yes/no)

This output is not about user authentication which KbdInteractiveAuthentication is for. This is about authentication of the host and fingerprint of the host.
This User Gave Thanks to Aia For This Post:
mohtashims
# 4  
Old 03-05-2018
Hammer & Screwdriver
Is there any option to suppress "ECDSA key fingerprint"
# 5  
Old 03-05-2018
As Aia pointed the option you want is StrictHostKeyChecking=.

Use no or off to automatically add new host keys and allow connections to hosts with changed keys. Use accept-new to automatically add new hosts but not permit hosts with changed keys. ask (the default) to interactively ask the user what to do.
This User Gave Thanks to Chubler_XL For This Post:
mohtashims
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