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authorrebortg <github@ghlr.de>2020-12-08 14:57:44 +0100
committerrebortg <github@ghlr.de>2020-12-08 14:57:44 +0100
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+.. _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 bootet 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.