Check Commit Confirmation

The following scenario shows an example where it’s useful to require a confirmation after the commit.

Test Commit Confirmation Needed

Description

In this simple scenario, the system is configured with ssh enabled and a commit confirmation-needed. In order to verify the commit confirmation, imagine that the user deletes the ssh service by mistake, once the changes are committed, the system will require a confirmation, and after 10 seconds if no confirmation is received, the system’s configuration will be automatically rolled back.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service ssh
set system cli configuration commit confirm-needed timeout 10
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping IP address 10.0.0.1 from DUT0:

admin@DUT0$ ping 10.0.0.1 count 1 size 56 timeout 1
Show output
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.034 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.034/0.034/0.034/0.000 ms

Step 3: Init an SSH connection from DUT0 to IP address 10.0.0.1 with the user admin:

admin@DUT0$ ssh admin@10.0.0.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null
Show output
Warning: Permanently added '10.0.0.1' (ECDSA) to the list of known hosts.
admin@10.0.0.1's password:
Welcome to Teldat OSDx v4.2.4.2

This system includes free software.
Contact Teldat for licenses information and source code.

Last login: Thu Apr 10 17:05:45 2025
admin@osdx$

Step 4: Modify the following configuration lines in DUT0 :

delete service

Step 5: Run command show running at DUT0 and expect this output:

Show output
# Teldat OSDx VM version v4.2.4.2
# Thu 10 Apr 2025 17:06:02 +00:00
# Warning: Configuration has not been saved
set interfaces ethernet eth0 address 10.0.0.1/24
set system cli configuration commit confirm-needed timeout 10
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Note

The above command deletes the ssh service, so the DUT0 will refuse the connection.

Step 6: Init an SSH connection from DUT0 to IP address 10.0.0.1 with the user admin:

admin@DUT0$ ssh admin@10.0.0.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null

Note

The system will wait for 10 seconds for a confirmation, if no confirmation is received, the commit will be rolled back.

Step 7: Run command show running at DUT0 and expect this output:

Show output
# Teldat OSDx VM version v4.2.4.2
# Thu 10 Apr 2025 17:06:37 +00:00
set interfaces ethernet eth0 address 10.0.0.1/24
set service ssh
set system cli configuration commit confirm-needed timeout 10
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 8: Init an SSH connection from DUT0 to IP address 10.0.0.1 with the user admin:

admin@DUT0$ ssh admin@10.0.0.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null
Show output
Warning: Permanently added '10.0.0.1' (ECDSA) to the list of known hosts.
admin@10.0.0.1's password:
Welcome to Teldat OSDx v4.2.4.2

This system includes free software.
Contact Teldat for licenses information and source code.

Last login: Thu Apr 10 17:06:01 2025 from 10.0.0.1
admin@osdx$

Note

This time we will confirm the commit, so the changes will be applied and no rollback will be done.

Step 9: Modify the following configuration lines in DUT0 :

delete service

Step 10: Run command system cli configuration commit confirm at DUT0 and expect this output:

Show output
Configuration confirm-needed stopped successfully!

Step 11: Init an SSH connection from DUT0 to IP address 10.0.0.1 with the user admin:

admin@DUT0$ ssh admin@10.0.0.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null