Junos OS

I'm trying to get a box to a factory-default condition, and need to remove all entries shown when the show system commit command is executed. None of the rollback configs are needed, and in fact have been removed from the box, but I can't seem to be able to clear the history of the show system commit command. Any thoughts or suggestions are appreciated!

Sincerely,

David.

> I'm trying to get a box to a factory-default condition, 

If all you need to do is to bring the box to its pristine state (i.e. factory-default), the best way would be to use the Junos install media appropriate for your platform to do a full re-install.

Look for "install media" on the Junos download page; you will need a Compact Flash or a USB stick according to the platform.

Hope it helps,

 Saverio 

I don't think re-installing would work here, as this box is already running 10.4R5.5.

Hi,

Please try it; it will work.

An install-media re-installation will wipe a router and remove all information regardless of which version you are running.

When you plug an install-media and reboot the router, your console will show a message asking you if it is ok to completely wipe out the router.

If you answer yes, your router will be wiped out and brought back to factory default (i.e. no logs, nothing).

Quoting from the guide:

> The installation media repartitions the media and completely reinstall the JUNOS software.

> No information from previous installations is retained during this installation.

You can find more information here:

http://www.juniper.net/techpubs/en_US/junos11.1/topics/reference/general/junos-installation-media.html

This is the standard procedure to bring a router back to factory default, as used by Juniper and partners to bring a router to pristine state.

In some special cases, this is preceded by multiple wipes (or even replacement/destruction) of both physycal media, but unless your router was used in some 'highly sensitive' network, it is not likely you will have the need to do this.

I hope it helps,

 Saverio

Hi

Apart form the way suggested by Saverio, which should work, you can

try "request system zeroize" (it won't work on EX, but should work on

other platforms).

Hello,

System commit history is in /var/db/commits file.

This is simple text file with UNIX timestamp, username and commit method per line:

root@Audi% more /var/db/commits
1308651499 root other 
1308651375 admin cli commit confirmed, rollback in 2mins
1308650931 admin cli 
1308646738 admin cli 
1308646721 admin cli commit confirmed, rollback in 2mins

 Overwriting this file with empty string does the trick:

root@Audi% echo "" > /var/db/commits
root@Audi% more /var/db/commits

root@Audi% exit
exit

aarseniev@Audi> show system commit 

aarseniev@Audi> edit 
Entering configuration mode

[edit]
aarseniev@Audi# commit 
commit complete

[edit]
aarseniev@Audi# exit configuration-mode 
Exiting configuration mode

aarseniev@Audi> show system commit 
0   2011-07-04 17:16:49 CEST by aarseniev via cli

 HTH

Rgds
Alex 

So I tried all three methods, my fault for not providing enough info, this is not a physical box but a training instance of Olive, so install-media like USB would be more cumbersome to implement. Zeroizing and re-installing did not work, however Alex's solution to replace the contents of the /var/db/commits file did exactly what I was looking for. Thanks Alex!