RemoteCommand is executed with `powershell` on linux machine (incorrect platform detection)

[SimeonEhrig]

Since today, I use the to run a custom .bashrc for a specific ssh connection to setup a environment for my remote vsc running on an Ubuntu 20.04:

Host vsc-v100-alpaka
ForwardAgent no
Hostname ***
ServerAliveInterval 15
ServerAliveCountMax 4
User ***
ForwardX11 yes
Compression yes
IdentityFile ~/.ssh/***
IdentitiesOnly yes
RemoteCommand /bin/bash --rcfile ~/workspace/caravan/alpaka/.vscode/env_init.sh -i
Proxycommand sh -c "ssh loginNode1 -W %h:%p || exec ssh loginNode2 -W %h:%p"

Since today, it is not working anymore, because vsc detects the system as Windows and tries to execute the powershell. I already tried the option remote.SSH.remotePlatform without success:

"remote.SSH.remotePlatform": {
        "vsc-v100-alpaka": "linux",
        "vsc-v100-vikunja": "linux",
        "v100": "linux"
    },

If I disable useLocalServer, the remote system is correct detected as Linux but than enableRemoteCommand is not working anymore.

• VSCode Version: 1.64.1
• Extension Version: v0.73.2022020915
• Local OS Version: Linux Mint 20.3 (Ubuntu 20.04 base)
• Remote OS Version: Ubuntu 20.04.3
• Remote Extension/Connection Type: SSH
• Logs:

[14:07:39.175] Log Level: 2
[14:07:39.176] remote-ssh@0.73.2022020915
[14:07:39.176] linux x64
[14:07:39.197] SSH Resolver called for "ssh-remote+vsc-v100-vikunja", attempt 1
[14:07:39.198] "remote.SSH.useLocalServer": true
[14:07:39.199] "remote.SSH.path": undefined
[14:07:39.199] "remote.SSH.configFile": undefined
[14:07:39.199] "remote.SSH.useFlock": true
[14:07:39.199] "remote.SSH.lockfilesInTmp": false
[14:07:39.200] "remote.SSH.localServerDownload": auto
[14:07:39.200] "remote.SSH.remoteServerListenOnSocket": false
[14:07:39.200] "remote.SSH.showLoginTerminal": false
[14:07:39.201] "remote.SSH.defaultExtensions": []
[14:07:39.201] "remote.SSH.loglevel": 2
[14:07:39.201] "remote.SSH.enableDynamicForwarding": true
[14:07:39.202] "remote.SSH.enableRemoteCommand": true
[14:07:39.202] "remote.SSH.serverPickPortsFromRange": {}
[14:07:39.202] "remote.SSH.serverInstallPath": {}
[14:07:39.210] SSH Resolver called for host: vsc-v100-vikunja
[14:07:39.210] Setting up SSH remote "vsc-v100-vikunja"
[14:07:39.215] Acquiring local install lock: /tmp/vscode-remote-ssh-27b54bc2-install.lock
[14:07:39.218] Looking for existing server data file at /home/user/.config/Code/User/globalStorage/ms-vscode-remote.remote-ssh/vscode-ssh-host-27b54bc2-d6ee99e4c045a6716e5c653d7da8e9ae6f5a8b03-0.73.2022020915/data.json
[14:07:39.219] Using commit id "d6ee99e4c045a6716e5c653d7da8e9ae6f5a8b03" and quality "stable" for server
[14:07:39.223] Install and start server if needed
[14:07:39.232] PATH: /home/user/.local/bin:/home/user/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/cuda/bin/:/home/user/.emacs.d/elpa/rtags-20200221.36/rtags-2.38/bin/:/home/user/.local/bin
[14:07:39.232] Checking ssh with "ssh -V"
[14:07:39.241] > OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f  31 Mar 2020

[14:07:39.248] askpass server listening on /run/user/1000/vscode-ssh-askpass-d896945542334e4562f2148bc1c5376501d5951d.sock
[14:07:39.249] Spawning local server with {"serverId":1,"ipcHandlePath":"/run/user/1000/vscode-ssh-askpass-e535fe489c460b21da64b83ce436810c43c9f569.sock","sshCommand":"ssh","sshArgs":["-v","-T","-D","39031","-o","ConnectTimeout=30","vsc-v100-vikunja"],"serverDataFolderName":".vscode-server","dataFilePath":"/home/user/.config/Code/User/globalStorage/ms-vscode-remote.remote-ssh/vscode-ssh-host-27b54bc2-d6ee99e4c045a6716e5c653d7da8e9ae6f5a8b03-0.73.2022020915/data.json"}
[14:07:39.249] Local server env: {"DISPLAY":":0","ELECTRON_RUN_AS_NODE":"1","SSH_ASKPASS":"/home/user/.vscode/extensions/ms-vscode-remote.remote-ssh-0.73.2022020915/out/local-server/askpass.sh","VSCODE_SSH_ASKPASS_NODE":"/usr/share/code/code","VSCODE_SSH_ASKPASS_EXTRA_ARGS":"--ms-enable-electron-run-as-node","VSCODE_SSH_ASKPASS_MAIN":"/home/user/.vscode/extensions/ms-vscode-remote.remote-ssh-0.73.2022020915/out/askpass-main.js","VSCODE_SSH_ASKPASS_HANDLE":"/run/user/1000/vscode-ssh-askpass-d896945542334e4562f2148bc1c5376501d5951d.sock"}
[14:07:39.254] Spawned 26334
[14:07:39.379] > local-server-1> Spawned ssh, pid=26342
[14:07:39.381] stderr> OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f  31 Mar 2020
[14:07:39.409] stderr> mux_client_request_session: session request failed: Session open refused by peer
[14:07:39.553] stderr> debug1: Server host key: ecdsa-sha2-nistp256 SHA256:jJ5MNeSKjfrOlQTGEhjMFSpd29zh+fGdNGs9JcfU27U
[14:07:39.733] stderr> Authenticated to fwk394 (via proxy).
[14:07:39.733] stderr> bind [::1]:39031: Address already in use
[14:07:39.733] stderr> bind [127.0.0.1]:39031: Address already in use
[14:07:39.733] stderr> channel_setup_fwd_listener_tcpip: cannot listen to port: 39031
[14:07:39.733] stderr> Could not request local forwarding.
[14:07:39.734] stderr> ControlSocket /tmp/remoteuser@fwk394:22 already exists, disabling multiplexing
[14:07:40.326] stderr> bash: cannot set terminal process group (-1): Inappropriate ioctl for device
[14:07:40.326] stderr> bash: no job control in this shell
[14:07:50.471] stderr> (vikunja-dev) remoteuser@fwk394:~$ 
[14:07:50.497] > ready: e3b128ee2c71
[14:07:50.500] stderr> echo 'ready: e3b128ee2c71'
[14:07:50.500] stderr> (vikunja-dev) remoteuser@fwk394:~$ 
[14:07:50.535] Platform: windows
[14:07:50.536] Remote command length: 8140/8192 characters
[14:07:50.568] > Linux 5.4.0-89-generic #100-Ubuntu SMP Fri Sep 24 14:50:10 UTC 2021
[14:07:50.569] stderr> (vikunja-dev) remoteuser@fwk394:~$ 
[14:07:50.638] stderr> powershell -NoProfile
[14:07:50.834] stderr> 
[14:07:50.835] stderr> Command 'powershell' not found, but can be installed with:
[14:07:50.835] stderr> 
[14:07:50.836] stderr> sudo snap install powershell
[14:07:50.837] stderr> 
[14:07:50.861] stderr> (vikunja-dev) remoteuser@fwk394:~$ 
[14:08:11.257] Terminating local server
[14:08:11.274] Resolver error: Error: Connecting with SSH timed out
	at Function.Timeout (/home/user/.vscode/extensions/ms-vscode-remote.remote-ssh-0.73.2022020915/out/extension.js:1:586043)
	at Timeout._onTimeout (/home/user/.vscode/extensions/ms-vscode-remote.remote-ssh-0.73.2022020915/out/extension.js:1:630685)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)
[14:08:11.283] Local server exit: 15
[14:08:11.311] ------

[tanhakabir]

When you connect through just your shell to vsc-v100-alpaka are you able to see your custom bash shell being used?

[SimeonEhrig]

Yes, because the lines also appear, if I log in via interactive shell.

VSC output:

bash: cannot set terminal process group (-1): Inappropriate ioctl for device
[14:07:40.326] stderr> bash: no job control in this shell

interactive shell output:

user@dev-system:~$ ssh vsc-v100-alpaka 
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell
(alpaka-dev) user@dev-system:~$ 

[tanhakabir]

@roblourens I believe this is another situation where the shell command in the connection string enabled bash before on a windows system but not anymore now. We could try running probe shell first to actually know which shell they're running and decide the script based on that?

[roblourens]

I don't understand why the platform detection isn't working though. It might have timed out? It looks like the uname response is late

[SimeonEhrig]

I don't understand why the platform detection isn't working though. It might have timed out? It looks like the uname response is late

The script env_init.sh does the following commands:

#!/bin/bash
 
source ~/.bashrc
conda activate vikunja-dev

This takes about 10-15s, because the conda environment also loads some spack modules, which incredible slow. Therefore I increased also the SSH timeout to 30s.

[roblourens]

Ok. I think the platform detection is not included in our configurable ssh timeout. We could make this part of our timeout setting