Solved Connecting to FreeBSD from VS Code over SSH

J

Jiri

Hi guys,

I'm trying to figure out how to connect to my FreeBSD box from VS Code over SSH. There are some instructions here and here, but I haven't had much luck following those.

Client
Pop!_OS (based on Ubuntu 22.04)
VS Code 1.95.0
  • VS Code extension Remote - SSH v0.116.2024102915 (pre-release)
  • Remote.SSH: Enable Remote Command is enabled.
  • ~/.ssh/config:
    Code: 
    Host beastie1
  Hostname beastie1
  User jiri
  RemoteCommand /compat/linux/usr/bin/bash
Server
FreeBSD 14.1
  • linux service is running
    Code: 
    # service -e | grep linux
linux/etc/rc.d/linux
  • Code: 
    /compat/linux/usr/bin/uname -a
Linux beastie1 5.15.0 FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC x86_64 x86_64 x86_64 GNU/Linux
  • VS Code creates ~/.vscode-server dir (empty) on first attempt to connect.

Remote - SSH extension output (truncated):

Code: 
[13:01:34.946] stderr> Authenticated to beastie1 ([192.168.0.161]:22) using "publickey".
[13:01:35.001] > ready: 0f751ff52673
[13:01:35.009] > FreeBSD 14.1-RELEASE FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC
[13:01:35.009] Platform: linux
[13:01:35.015] > /usr/local/bin/zsh
[13:01:35.015] Parent Shell: zsh
[13:01:35.015] Parent Shell pid: 122712
[13:01:35.021] > 3128
[13:01:35.021] Waiting for pid of spawned 'sh' subshell: '3128'...
[13:01:35.038] > 0f751ff52673: running
> Script executing under PID: 3128
[13:01:35.045] > Unsupported platform: FreeBSD

My primary shell on the server is zsh, but it shouldn't be an issue, because I'm explicitly telling VS Code to use /compat/linux/usr/bin/bash.

Any ideas?
 
vedran said:
Thanks for the mention! Glad you got it working with some tweaking.
Click to expand...
Oh, thank you for the tutorial! And I love that the admins approved the thread even though I had already answered it before they did.

Maybe one more detail for people stumbling upon this in the future: the extension's Remote.SSH: Enable Remote Command option doesn't seem to be doing anything, I've turned it off just to see what happens, and it still works.
 
I have followed the instructions and the link above, but still had the `unsupported platform: FreeBSD` error. I did a little bit of research and realized that the VScode has `Enable Remote Command` option. I enabled it and all of my problems are solved. Here's my notes, maybe it will help someone in the future:

Bash: 
# First, install the VSCode - OSS package on FreeBSD
pkg install vscode
# Enable Linux support for FreeBSD in /etc/rc.conf, or simply use:
sysrc linux_enable="YES"
# Start the Linux service:
service linux start
# Install the required packages for the subsystem:
pkg install linux-rl9-libsigsegv
# To check if Linux is installed successfully, run:
/compat/linux/usr/bin/bash --version

# In the client, enable the `Enable Remote Command` option.
# Then apply your SSH configurations to the ~/.ssh/config file.
# For example, I have the following configuration:
Host my-delusional-host
    HostName 127.0.0.1
    Port 2223
    User root
    RequestTTY force
    RemoteCommand /compat/linux/usr/bin/bash
# The RemoteCommand is mandatory (thanks to Jiri), others are optional.
 
suntzu00 said:
it's part of the emulators/linux_base-rl9 now.
Click to expand...
Thanks. Now it almost works now, but fails to open a directory.
Code: 
uname -a
FreeBSD repeater 14.3-RELEASE FreeBSD 14.3-RELEASE releng/14.3-n271432-8c9ce319fef7 GENERIC amd64
On FreeBSD execute.
Code: 
pkg install emulators/linux_base-rl9
# then
sysrc linux_enable="YES"
service linux start
On MacOS, add to ~/.ssh/config
Code: 
Host Repeater-BSD
  HostName repeater.local
  User rpt
  RequestTTY force
  RemoteCommand /compat/linux/usr/bin/bash
and enable VSCode Settings for Remote.SSH: Enable Remote Command.

The FreeBSD console displays.
Code: 
linux jid 0 pid 2567 (tokio-runtime-w): syscall pid_open not implemented
Jul 13 17:00:07 repeater sshd-session[2584]: error: PAM: Authentication error for rpt from 192.168.1.35

/etc/rc/conf is as follows.
Code: 
hostname="repeater"
ifconfig_igc0="DHCP"
sshd_enable="YES"
ntpd_enable="YES"
moused_nondefault_enable="NO"
# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
dumpdev="AUTO"
zfs_enable="YES"
mdnsd_enable="YES"
mdnsd_flags="igc0"
linux_enable="YES"

Clearly, a step is missing - but what?
 
Last edited:
Michael Nayor said:
The future has arrived with a fresh install of 14.3
Code: 
No packages available to install matching 'linux-rl9-libsigsegv' have been found in the repositories.
Any ideas?
Click to expand...

Thanks for the note. I will update the guide soon.

As for the other issue, I can't help much as the approach in the guide worked well on Linux locally to FreeBSD remote.
 
vedran said:
Thanks for the note. I will update the guide soon.

As for the other issue, I can't help much as the approach in the guide worked well on Linux locally to FreeBSD remote.
Click to expand...
Done. I also noticed an issue if sh is the default user shell and noted it down.
 
You must log in or register to reply here.
Back
Top