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cmd/tailscale/cli: flesh out "tailscale ssh" CLI docs

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Per user feedback.

Fixes #5877

Change-Id: Ib70ad57ec2507244fc54745f4e43c0ce13f51e9c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2022-10-30 19:56:19 -07:00 committed by Brad Fitzpatrick
parent 3336d08d59
commit 7ad636f5b7
1 changed files with 17 additions and 1 deletions
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18
cmd/tailscale/cli/ssh.go
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@ -28,7 +28,23 @@
Name: "ssh",
ShortUsage: "ssh [user@]<host> [args...]",
ShortHelp: "SSH to a Tailscale machine",
Exec: runSSH,
LongHelp: strings.TrimSpace(`
The 'tailscale ssh' command is an optional wrapper around the system 'ssh'
command that's useful in some cases. Tailscale SSH does not require its use;
most users running the Tailscale SSH server will prefer to just use the normal
'ssh' command or their normal SSH client.
The 'tailscale ssh' wrapper adds a few things:
* It resolves the destination server name in its arugments using MagicDNS,
even if --accept-dns=false.
* It works in userspace-networking mode, by supplying a ProxyCommand to the
system 'ssh' command that connects via a pipe through tailscaled.
* It automatically checks the destination server's SSH host key against the
node's SSH host key as advertised via the Tailscale coordination server.
`),
Exec: runSSH,
}
func runSSH(ctx context.Context, args []string) error {