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91 lines
3.2 KiB
Markdown
91 lines
3.2 KiB
Markdown
# LinuxKit with bare metal on Packet
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[Packet](http://packet.net) is a bare metal hosting provider.
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You will need to [create a Packet account] and a project to
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put this new machine into. You will also need to [create an API key]
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with appropriate read/write permissions to allow the image to boot.
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[create a Packet account]:https://app.packet.net/#/registration/
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[create an API key]:https://help.packet.net/quick-start/api-integrations
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Linuxkit is known to boot on the [Type 0]
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and [Type 1] servers at Packet.
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Support for other server types, including the [Type 2A] ARM server,
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is a work in progress.
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[Type 0]:https://www.packet.net/bare-metal/servers/type-0/
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[Type 1]:https://www.packet.net/bare-metal/servers/type-1/
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[Type 2A]:https://www.packet.net/bare-metal/servers/type-2a/
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## Boot
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Build an image with `moby build`. The [packet.yml](https://github.com/vielmetti/linuxkit/blob/master/examples/packet.yml)
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example file provides a suitable template to start from.
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Linuxkit on Packet [boots via iPXE]. This requires that you have
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an HTTP server on which you can store your images. At the moment
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there is no equivalent to "linuxkit push" to upload these images,
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so you will have to host them yourself. The images can be served
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from any HTTP server, though in the interest of performance you may
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want to locate those images near the data center that you're booting in.
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[boots via iPXE]:https://help.packet.net/technical/infrastructure/custom-ipxe
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Servers take several minutes to provision. During this time their
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state can be seen from the Packet console.
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```
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$ linuxkit run packet --help
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USAGE: linuxkit run packet [options] [name]
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Options:
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-api-key string
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Packet API key
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-base-url string
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Base URL that the kernel and initrd are served from.
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-hostname string
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Hostname of new instance (default "moby")
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-img-name string
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Overrides the prefix used to identify the files. Defaults to [name]
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-machine string
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Packet Machine Type (default "baremetal_0")
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-project-id string
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Packet Project ID
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-zone string
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Packet Zone (default "ams1")
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```
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## Console
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If your LinuxKit system does not include an ssh or remote console
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application, you can still connect to it via the Packet SOS ("Serial over SSH")
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console. See https://help.packet.net/technical/networking/sos-rescue-mode
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for details on that mode.
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## Disks
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At this moment the Linuxkit server boots from RAM, with no persistent
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storage and there is no code that mounts disks. As a result,
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when the Linuxkit image reboots, all is lost.
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Packet supports a [persistent iPXE] mode through its API
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which would allow a server to come back up after a reboot
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and re-start the PXE process. This is great for testing your
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provisioning scripts. This is not yet available directly
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through Linuxkit.
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[persistent iPXE]:https://help.packet.net/technical/infrastructure/custom-ipxe
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## Networking
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Some Packet server types have bonded networks; the current code does
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not support that.
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## Integration services and Metadata
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Packet supports [user state](https://help.packet.net/technical/infrastructure/user-state)
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during system bringup, which enables the boot process to be more informative about the
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current state of the boot process once the kernel has loaded but before the
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system is ready for login.
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