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.. _migrate_from_vyatta:
Migrate from Vyatta Core
========================
VyOS 1.x.x line aims to preserve backward compatibility and provide a safe upgrade path for existing Vyatta Core users. You may think of 1.0.0 as VC7.0.
Vyatta release compatiblity
---------------------------
Vyatta Core releases from **6.5** to **6.6** should be 100% compatible.
Vyatta Core **6.4** and earlier may have incompatibilities. In **6.5** the "modify" firewall was removed and replaced with "set policy route" command family, and old config cannot be automatically converted. You will have to adapt it to post-6.5 syntax manually.
.. NOTE::
Also, in **6.5** remote access VPN interfaces were renamed from pppX to l2tpX and pptpX, so if you are using zone-policy in pre-6.5 versions, make sure to change interface names in rules for remote access VPN.
Upgrade procedure
-----------------
You just use "add system image", as if it was a new VC release. The only thing is that is you want to verify image digital signature, you will have to add the public key.
.. code-block:: sh
vyatta@vyatta:~$ '''wget http://vyos.net/so3group_maintainers.key'''
Connecting to vyos.net (85.159.113.32:80)
so3group_maintainers 100% |***************************************************************************
********************************************************************| 3125 --:--:-- ETA
vyatta@vyatta:~$ '''sudo apt-key add so3group_maintainers.key'''
OK
vyatta@vyatta:~$
Next, we can add the VyOS image.
Note that Vyatta doesn't support HTTP redirects for **add system image** and the http://mirror.vyos.net HTTP load-balancer links will not work. Instead, choose one of the `mirrors <https://wiki.vyos.net/wiki/Mirrors>`_ and get a direct link.
This example uses 1.0.0 image, however, it's better to install the latest release.
.. code-block:: sh
vyatta@vyatta:~$ show system image
The system currently has the following image(s) installed:
1: VC6.6R1 (default boot) (running image)
vyatta@vyatta:~$ add system image http://0.uk.mirrors.vyos.net/iso/release/1.0.0/vyos-1.0.0-amd64.iso
Trying to fetch ISO file from http://0.uk.mirrors.vyos.net/iso/release/1.0.0/vyos-1.0.0-amd64.iso
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 223M 100 223M 0 0 960k 0 0:03:57 0:03:57 --:--:-- 657k
ISO download succeeded.
Checking for digital signature file...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 836 100 836 0 0 4197 0 --:--:-- --:--:-- --:--:-- 4287
Found it. Checking digital signature...
gpg: directory `/root/.gnupg' created
gpg: new configuration file `/root/.gnupg/gpg.conf' created
gpg: WARNING: options in `/root/.gnupg/gpg.conf' are not yet active during this run
gpg: keyring `/root/.gnupg/pubring.gpg' created
gpg: Signature made Sun Dec 22 16:51:42 2013 GMT using RSA key ID A442E6E9
gpg: /root/.gnupg/trustdb.gpg: trustdb created
gpg: Good signature from "SO3 Group Maintainers <maintainers@so3group.net>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: DD5B B405 35E7 F6E3 4278 1ABF B744 E25A A442 E6E9
Digital signature is valid.
Checking MD5 checksums of files on the ISO image...OK.
Done!
What would you like to name this image? [1.0.0]: '''[return]'''
OK. This image will be named: 1.0.0
Installing "1.0.0" image.
Copying new release files...
Would you like to save the current configuration
directory and config file? (Yes/No) [Yes]: '''[return]'''
Copying current configuration...
Would you like to save the SSH host keys from your
current configuration? (Yes/No) [Yes]: '''[return]'''
Copying SSH keys...
Setting up grub configuration...
Done.
vyatta@vyatta:~$ '''show system image'''
The system currently has the following image(s) installed:
1: 1.0.0 (default boot)
2: VC6.6R1 (running image)
vyatta@vyatta:~$
Upon reboot, you should have a working installation of VyOS.
You can go back to your Vyatta install using the **set system image default-boot** command and selecting the your previous Vyatta image.
Note that future releases of VyOS may break compatibility with Vyatta.
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