mirror of
https://github.com/vyos/vyos-documentation.git
synced 2025-10-26 08:41:46 +01:00
116 lines
3.5 KiB
ReStructuredText
116 lines
3.5 KiB
ReStructuredText
.. _image-mgmt:
|
|
|
|
################
|
|
Image Management
|
|
################
|
|
|
|
The VyOS image-based installation is implemented by creating a directory for
|
|
each image on the storage device selected during the install process.
|
|
|
|
The directory structure of the boot device:
|
|
|
|
.. code-block:: none
|
|
|
|
/
|
|
/boot
|
|
/boot/grub
|
|
/boot/1.2.0-rolling+201810021347
|
|
|
|
The image directory contains the system kernel, a compressed image of the root
|
|
filesystem for the OS, and a directory for persistent storage, such as
|
|
configuration. On boot, the system will extract the OS image into memory and
|
|
mount the appropriate live-rw sub-directories to provide persistent storage
|
|
system configuration.
|
|
|
|
This process allows for a system to always boot to a known working state, as
|
|
the OS image is fixed and non-persistent. It also allows for multiple releases
|
|
of VyOS to be installed on the same storage device. The image can be selected
|
|
manually at boot if needed, but the system will otherwise boot the image
|
|
configured to be the default.
|
|
|
|
.. opcmd:: show system image
|
|
|
|
List all available system images which can be booted on the current system.
|
|
|
|
.. code-block:: none
|
|
|
|
vyos@vyos:~$ show system image
|
|
The system currently has the following image(s) installed:
|
|
|
|
1: 1.2.0-rolling+201810021347 (default boot)
|
|
2: 1.2.0-rolling+201810021217
|
|
3: 1.2.0-rolling+201809252218
|
|
|
|
|
|
.. opcmd:: delete system image [image-name]
|
|
|
|
Delete no longer needed images from the system. You can specify an optional
|
|
image name to delete, the image name can be retrieved via a list of available
|
|
images can be shown using the :opcmd:`show system image`.
|
|
|
|
.. code-block:: none
|
|
|
|
vyos@vyos:~$ delete system image
|
|
The following image(s) can be deleted:
|
|
|
|
1: 1.3-rolling-201912181733 (default boot) (running image)
|
|
2: 1.3-rolling-201912180242
|
|
3: 1.2.2
|
|
4: 1.2.1
|
|
|
|
Select the image to delete: 2
|
|
|
|
Are you sure you want to delete the
|
|
"1.3-rolling-201912180242" image? (Yes/No) [No]: y
|
|
Deleting the "1.3-rolling-201912180242" image...
|
|
Done
|
|
|
|
.. opcmd:: show version
|
|
|
|
Show current system image version.
|
|
|
|
.. code-block:: none
|
|
|
|
vyos@vyos:~$ show version
|
|
Version: VyOS 1.3-rolling-201912181733
|
|
Built by: autobuild@vyos.net
|
|
Built on: Wed 18 Dec 2019 17:33 UTC
|
|
Build UUID: bccde2c3-261c-49cc-b421-9b257204e06c
|
|
Build Commit ID: f7ce0d8a692f2d
|
|
|
|
Architecture: x86_64
|
|
Boot via: installed image
|
|
System type: bare metal
|
|
|
|
Hardware vendor: VMware, Inc.
|
|
Hardware model: VMware Virtual Platform
|
|
Hardware S/N: VMware-42 1d 83 b9 fe c1 bd b2-7d 3d 49 db 94 18 f5 c9
|
|
Hardware UUID: b9831d42-c1fe-b2bd-7d3d-49db9418f5c9
|
|
|
|
Copyright: VyOS maintainers and contributors
|
|
|
|
|
|
|
|
|
|
|
|
System rollback
|
|
===============
|
|
|
|
If you need to rollback to a previous image, you can easily do so. First
|
|
check the available images through the :opcmd:`show system image`
|
|
command and then select your image with the following command:
|
|
|
|
.. opcmd:: set system image default-boot [image-name]
|
|
|
|
Select the default boot image which will be started on the next boot
|
|
of the system.
|
|
|
|
Then reboot the system.
|
|
|
|
.. note:: VyOS automatically associates the configuration to the image,
|
|
so you don't need to worry about that. Each image has a unique copy
|
|
of its configuration.
|
|
|
|
If you have access to the console, there is a another way to select
|
|
your booting image: reboot and use the GRUB menu at startup.
|