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157 lines
5.7 KiB
ReStructuredText
157 lines
5.7 KiB
ReStructuredText
.. _image-mgmt:
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################
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Image Management
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################
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The VyOS image-based installation is implemented by creating a directory for
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each image on the storage device selected during the install process.
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The directory structure of the boot device:
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.. code-block:: none
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/
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/boot
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/boot/grub
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/boot/1.2.0-rolling+201810021347
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The image directory contains the system kernel, a compressed image of the root
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filesystem for the OS, and a directory for persistent storage, such as
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configuration. On boot, the system will extract the OS image into memory and
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mount the appropriate live-rw sub-directories to provide persistent storage
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system configuration.
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This process allows for a system to always boot to a known working state, as
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the OS image is fixed and non-persistent. It also allows for multiple releases
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of VyOS to be installed on the same storage device. The image can be selected
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manually at boot if needed, but the system will otherwise boot the image
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configured to be the default (:opcmd:`set system image default-boot`).
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.. opcmd:: show system image
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List all available system images which can be bootet on the current system.
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.. code-block:: none
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vyos@vyos:~$ show system image
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The system currently has the following image(s) installed:
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1: 1.2.0-rolling+201810021347 (default boot)
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2: 1.2.0-rolling+201810021217
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3: 1.2.0-rolling+201809252218
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.. opcmd:: set system image default-boot
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Select the default boot image which will be started on the next boot of the
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System. A list of available images can be shown using the :opcmd:`show
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system image`
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.. opcmd:: delete system image [image-name]
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Delete no longer needed images from the system. You can specify an optional
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image name to delete, the image name can be retrived via a list of available
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images can be shown using the :opcmd:`show system image`.
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.. code-block:: none
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vyos@vyos:~$ delete system image
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The following image(s) can be deleted:
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1: 1.3-rolling-201912181733 (default boot) (running image)
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2: 1.3-rolling-201912180242
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3: 1.2.2
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4: 1.2.1
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Select the image to delete: 2
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Are you sure you want to delete the
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"1.3-rolling-201912180242" image? (Yes/No) [No]: y
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Deleting the "1.3-rolling-201912180242" image...
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Done
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.. opcmd:: show version
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Show current system image version.
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.. code-block:: none
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vyos@vyos:~$ show version
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Version: VyOS 1.3-rolling-201912181733
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Built by: autobuild@vyos.net
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Built on: Wed 18 Dec 2019 17:33 UTC
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Build UUID: bccde2c3-261c-49cc-b421-9b257204e06c
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Build Commit ID: f7ce0d8a692f2d
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Architecture: x86_64
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Boot via: installed image
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System type: bare metal
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Hardware vendor: VMware, Inc.
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Hardware model: VMware Virtual Platform
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Hardware S/N: VMware-42 1d 83 b9 fe c1 bd b2-7d 3d 49 db 94 18 f5 c9
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Hardware UUID: b9831d42-c1fe-b2bd-7d3d-49db9418f5c9
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Copyright: VyOS maintainers and contributors
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.. _update_vyos:
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Update VyOS
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===========
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Finally, new system images can be added using the :opcmd:`add system image`
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command. The add image command will extract the image from the release ISO
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(either on the local filesystem or remotely if a URL is provided). The image
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install process will prompt you to use the current system configuration and SSH
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security keys, allowing for the new image to boot using the current
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configuration.
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.. opcmd:: add system image <url | path>
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New system images can be either installed from an URL (http://, https://) or
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any location pointed to by a file path, e.g. /tmp/vyos-1.2.3-amd64.iso.
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If there is not enough free diskspace available installation will be
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canceled. To delete images use the :opcmd:`delete system image` command.
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.. code-block:: none
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vyos@vyos:~$ add system image https://downloads.vyos.io/rolling/current/amd64/vyos-rolling-latest.iso
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Trying to fetch ISO file from https://downloads.vyos.io/rolling/current/amd64/vyos-rolling-latest.iso
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% Total % Received % Xferd Average Speed Time Time Time Current
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Dload Upload Total Spent Left Speed
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100 338M 100 338M 0 0 3837k 0 0:01:30 0:01:30 --:--:-- 3929k
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ISO download succeeded.
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Checking for digital signature file...
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% Total % Received % Xferd Average Speed Time Time Time Current
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Dload Upload Total Spent Left Speed
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0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
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curl: (22) The requested URL returned error: 404 Not Found
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Unable to fetch digital signature file.
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Do you want to continue without signature check? (yes/no) [yes]
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Checking MD5 checksums of files on the ISO image...OK.
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Done!
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What would you like to name this image? [vyos-1.3-rolling-201912201452]:
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OK. This image will be named: vyos-1.3-rolling-201912201452
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.. note:: Rolling releases are not GPG signed, only the real release build
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will have a proper GPG signature.
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.. note:: VyOS configuration is associated to each image, and each image has
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a unique copy of its configuration. This is different than a traditional
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network router where the configuration is shared across all images.
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After reboot you might want to verify the version you are running with the
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:opcmd:`show version` command.
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.. hint:: You can always access files from a previous installation any copy
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them to your current image. This can be done using the :opcmd:`copy`
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command. To copy ``/config/config.boot`` from VyOS 1.2.1 image use ``copy
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file 1.2.1://config/config.boot to /tmp/config.boot.1.2.1``.
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