Install from SSH

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Revision as of 06:08, 25 January 2019 by Terry tibbles (talk | contribs) (On the remote (target) machine: made note more factual)
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Tango-go-next.pngThis article or section is a candidate for moving to Installation via SSH.Tango-go-next.png

Notes: Sounds better. (Discuss in Talk:Install from SSH#)

This article is intended to show users how to install Arch remotely via an SSH connection. Consider this approach over the standard one in scenarios such as the following:

  • Home theater PC without a proper monitor (e.g. an SDTV);
  • PC located in another city, state, country (friend's house, parent's house, etc.);
  • PC that you would rather setup remotely, for example from the comfort of one's own workstation with copy/paste abilities from the ArchWiki.

On the remote (target) machine

Note: These steps require physical access to the machine. Obviously, if physically located elsewhere, this will need to be coordinated with another person.

Boot the target machine into a live Arch environment via the Live CD/USB image: this will log the user in as root.

At this point, setup the network on the target machine as for example suggested in Installation guide#Connect to the Internet.

Secondly, setup a root password which is needed for an SSH connection, since the default Arch password for root is empty:

# passwd

Now check that PermitRootLogin yes is present (and uncommented) in /etc/ssh/sshd_config. This setting allows root login with password authentication on the SSH server.

Finally, start the openssh daemon with sshd.service, which is included by default on the live CD.

Note: Unless required, after installation it would be recommended to remove PermitRootLogin yes from /etc/ssh/sshd_config.
Tip: If the target machine is behind a NAT router, and you require external access, the SSH port (22 by default) will need to be forwarded to the target machine's LAN IP address.

On the local machine

On the local machine, connect to the target machine via SSH with the following command:

$ ssh

From here one is presented with the live environment's welcome message and is able to administer the target machine as if sitting at the physical keyboard. At this point, if the intent is to simply install Arch from the live media, follow the guide at Installation guide. If the intent is to edit an existing Linux install that got broken, follow the Install from existing Linux wiki article.

Tip: Consider installing a terminal multiplexer on the target machine's live (in memory) system, so that if you are disconnected you can reattach to your multiplexer's session.