Th following error is observed upon using any incorrect passwordless config archival:

1. Source –  The router which pushes the configuration. Configure the below:

    labroot@RouterA> show configuration system archival
   configuration {
      transfer-on-commit;
      archive-sites {
          "scp://[email protected]:/var/tmp/test";
      }
   }

    

   labroot@RouterA> show configuration system login user regress
   uid 2004;
   class super-user;
   authentication {
      encrypted-password "$6$pk6SDkCW$3nsovY59bYDOnap4Hq2Wad7D/Y2CEQwbXZhZXSziSz4R8bwhsopm1iNrVyzpjkD7xIrI/6/ivry3xdOlJEruC1"; 
   ## SECRET-DATA
   }

2. Get the root key for SSH using below command from Router shell with root password:

   Router A> start shell user root 
   pwd:  Type Root pwd 
   
   root@router# ssh-keygen -t rsa
    

3. Check in below directory to get the generated ssh-rsa key
   
   /root/.ssh/id_rsa
   
   ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC6LfO6btjxdNHT7bGm6IOWWnIllHk5J0BHb/K6bYq320kFYko5OSbonBgBONZcSAGUiRgmcfmHczJGowxU4NBhjsmC4tcEUWnyiRX4CUVJPFWNbxTtgyls55/StC0HZNHb0/A5AnpSKL/HU4gvDmgA7i3E9Xp2CCBRc5gFt6eWdH8Yf7mGB0qR5mVpCLKZ+xFEYM9O/qG5qR7WZMh5eQwD0MpNSdBPUiyVVsmkrLM9m8VL4HvGSelOBdFFZv8yU0fqYneolo1RnfzMamR7dXXlDahmMlBTPosOYbv0O17vCXoDvsrf+BoPt7b5mTOr9YtGoJyDHyxoxHIzFwTun7+p root@jtac-mx10003-r2601

4. On the destination router. For the user regress, copy this ssh-key to authorized_keys:

    root@jtac-MX480-r095-TWIX1:/var/home/regress/.ssh # pwd

   /var/home/regress/.ssh

   root@jtac-MX480-r095-TWIX1:/var/home/regress/.ssh # cat authorized_keys

   ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC6LfO6btjxdNHT7bGm6IOWWnIllHk5J0BHb/K6bYq320kFYko5OSbonBgBONZcSAGUiRgmcfmHczJGowxU4NBhjsmC4tcEUWnyiRX4CUVJPFWNbxTtgyls55/StC0HZNHb0/A5AnpSKL/HU4gvDmgA7i3E9Xp2CCBRc5gFt6eWdH8Yf7mGB0qR5mVpCLKZ+xFEYM9O/qG5qR7WZMh5eQwD0MpNSdBPUiyVVsmkrLM9m8VL4HvGSelOBdFFZv8yU0fqYneolo1RnfzMamR7dXXlDahmMlBTPosOYbv0O17vCXoDvsrf+BoPt7b5mTOr9YtGoJyDHyxoxHIzFwTun7+p root@jtac-mx10003-r2601
   

   labroot@jtac-MX480-r095-TWIX1> show configuration system login
   user regress {
      uid 2000;
      class super-user;
   }

5. After this on the router, commit the configurations and check:

    Feb 21 08:02:31 jtac-mx10003-r2601 logger[18100]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230220_083751_juniper.conf.gz
   
   Feb 21 08:02:34 jtac-mx10003-r2601 logger[18116]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230220_084429_juniper.conf.gz
   
   Feb 21 08:02:37 jtac-mx10003-r2601 logger[18131]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230220_084429_juniper.conf.gz
   
   Feb 21 08:02:40 jtac-mx10003-r2601 logger[18146]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230221_073758_juniper.conf.gz
   
   Feb 21 08:02:42 jtac-mx10003-r2601 logger[18161]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230221_073758_juniper.conf.gz
   
   Feb 21 08:02:45 jtac-mx10003-r2601 logger[18176]: transfer-file: Transferred /var/transfer/config/jtac-mx10003-r2601_20230221_074102_juniper.conf.gz
   

2023-04-06: Initial publication