SSH_AUTH_SOCK is not set when connecting to remote containers

[andyljones]

Connecting to a remote container, SSH agent forwarding doesn't work and SSH_AUTH_SOCK is an empty string. Setting SSH_AUTH_SOCK to point at the vscode-ssh-auth socket in /tmp gets it to work.

• VSCode Version: 1.44.2
• Local OS Version: macOS 10.15.2
• Remote OS Version: macOS 10.15.2/docker desktop 19.03.8
• Remote Extension/Connection Type: Docker attach-to-running-container

Steps to Reproduce:

For an exemplar container, I've followed this vscode tutorial:

git clone https://github.com/microsoft/vscode-express-sample.git
cd vscode-express-sample
docker-compose up
code .

Then from vscode, click through Remote Explorer -> right-click on container -> Attach to Container.

Within the window that opens inside the container, create a new terminal.

Test out ssh with ssh -T git@github.com. It'll fail.

Run echo $SSH_AUTH_SOCK. It'll return an empty string.

Run export SSH_AUTH_SOCK=$(ls -t /tmp/vscode-ssh-auth* | head -1) to set SSH_AUTH_SOCK.

Test out ssh with ssh -T git@github.com. It'll work!

Does this issue occur when you try this locally?: N/A
Does this issue occur when you try this locally and all extensions are disabled?: N/A

Notes

No extra extensions are installed remotely.

This might be related to this issue, but the poster there reports SSH_AUTH_SOCK being set.

Here's my dev-container logs:

[0 ms] Start: Resolving remote
[1 ms] Setting up container /eloquent_yonath

[2 ms] Start: Run: docker inspect --type container /eloquent_yonath
[1284 ms] Start: Check Docker is running
[1284 ms] Start: Run: docker info
[1670 ms] Start: Inspecting container
[1670 ms] Start: Run: docker inspect --type container e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb
[2002 ms] Start: Run: docker exec -i -u root -e VSCODE_REMOTE_CONTAINERS_SESSION=a25b1876-edcf-46e6-ad13-e1b832ff9a8e1588587688159 e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /bin/sh
[2006 ms] Start: Run in container: uname -m
[2787 ms] x86_64
[2787 ms] 
[2787 ms] Start: Run in container: (cat /etc/os-release || cat /usr/lib/os-release) 2>/dev/null
[2795 ms] PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
VERSION_CODENAME=stretch
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
[2795 ms] 
[2795 ms] Start: Run in container: cat /etc/passwd
[2801 ms] Start: Run in container: test -d /root/.vscode-server
[2806 ms] 
[2806 ms] 
[2806 ms] Exit code 1
[2806 ms] Start: Run in container: test -d /root/.vscode-remote
[2812 ms] 
[2812 ms] 
[2812 ms] Exit code 1
[2812 ms] Start: Run in container: set -o noclobber ; mkdir -p '/root/.vscode-server/data/Machine' && { > '/root/.vscode-server/data/Machine/.writeMachineSettingsMarker' ; } 2> /dev/null
[2820 ms] 
[2820 ms] 
[2821 ms] Start: Run in container: test -d /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd
[2826 ms] 
[2826 ms] 
[2826 ms] Exit code 1
[2827 ms] Installing VS Code Server for commit ff915844119ce9485abfe8aa9076ec76b5300ddd
[2827 ms] Start: Run in container: mkdir -p /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd_1588587691634
[2833 ms] 
[2833 ms] 
[2834 ms] Start: Run: docker exec -i -u root -w /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd_1588587691634 e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb tar --no-same-owner -xz --strip-components 1
[8041 ms] 
[8042 ms] 
[8042 ms] Start: Run in container: mv -n /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd_1588587691634 /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd
[8048 ms] 
[8048 ms] 
[8048 ms] Start: Launching Remote-Containers helper.
[8050 ms] Start: Run in container: # Copy .gitconfig
[8056 ms] 
[8056 ms] 
[8056 ms] Start: Run in container: cat <<'EOF-/tmp/vscode-remote-containers-9246fb80428cc6b91ae1ad6d4f948e1e936d94b6.js' >/tmp/vscode-remote-containers-9246fb80428cc6b91ae1ad6d4f948e1e936d94b6.js
[8064 ms] 
[8064 ms] 
[8064 ms] Start: Run in container: command -v git >/dev/null 2>&1 && git config --global credential.helper '!f() { /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/node /tmp/vscode-remote-containers-9246fb80428cc6b91ae1ad6d4f948e1e936d94b6.js $*; }; f' || true
[8072 ms] 
[8072 ms] 
[8072 ms] Start: Run in container: set -o noclobber ; mkdir -p '/root/.vscode-server/data/Machine' && { > '/root/.vscode-server/data/Machine/.installExtensionsMarker' ; } 2> /dev/null
[8078 ms] 
[8078 ms] 
[8080 ms] Start: Run in container: cd /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd; export VSCODE_AGENT_FOLDER=/root/.vscode-server; /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/server.sh --install-extension ms-python.python --force
[57437 ms] Installing extensions...
Installing extension 'ms-python.python' v2020.4.76186...
[57437 ms] Corrupt ZIP: end of central directory record signature not found
[57437 ms] Exit code 1
[57438 ms] Start: Run in container: for pid in `cd /proc && ls -d [0-9]*`; do { echo $pid ; readlink -f /proc/$pid/cwd ; xargs -0 < /proc/$pid/environ ; xargs -0 < /proc/$pid/cmdline ; } ; echo ; done 2>/dev/null
[57476 ms] Start: Run: docker exec -i -u root -e SHELL=/bin/bash -e VSCODE_AGENT_FOLDER=/root/.vscode-server -w /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/server.sh --disable-user-env-probe --port 0
[58819 ms] 

*
* Visual Studio Code Server
*
* Reminder: You may only use this software with Visual Studio family products,
* as described in the license https://aka.ms/vscode-remote/license
*


[58856 ms] IP Address: 172.17.0.3
Extension host agent listening on 33655


[10:22:27] Extension host agent started.
[58856 ms] Start: Run in container: echo 33655 >/root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/.devport
[58863 ms] 
[58864 ms] 
[58866 ms] Forwarding local port 33655 to container port 33655
[58867 ms] Start: Run: docker exec -i -u root -w /root/.vscode-server/extensions e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /bin/sh -c # Watch installed extensions
[58867 ms] Start: Run: docker exec -i -u root -w /root/.vscode-server/data/Machine e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /bin/sh -c # Watch machine settings
[58978 ms] Start: Run: docker exec -i -u root -e VSCODE_REMOTE_CONTAINERS_SESSION=a25b1876-edcf-46e6-ad13-e1b832ff9a8e1588587688159 e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/node -e 
[58981 ms] Start: Run: docker exec -i -u root -e VSCODE_REMOTE_CONTAINERS_SESSION=a25b1876-edcf-46e6-ad13-e1b832ff9a8e1588587688159 e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /root/.vscode-server/bin/ff915844119ce9485abfe8aa9076ec76b5300ddd/node -e 
[60437 ms] [10:22:29] [::ffff:127.0.0.1][b8339516][ManagementConnection] New connection established.
[60666 ms] [10:22:29] [::ffff:127.0.0.1][9890348f][ExtensionHostConnection] New connection established.
[60672 ms] [10:22:29] [::ffff:127.0.0.1][9890348f][ExtensionHostConnection] <167> Launched Extension Host Process.
[119971 ms] Start: Run: docker exec -i -u root -w /root/.vscode-server/extensions e924a1abf7fa583d6c62e9007c11999988a60016aef50b8d99afdd37afb000bb /bin/sh -c # Watch installed extensions

[chrmarti]

Make sure you have 'Inherit Env' enabled in the settings:

[andyljones]

Success!

Well damn, I have no idea when I disabled that. Sorry for the inconvenience, and thanks for the simple solution.

[andyljones]

Figured out why I turned it off: when using a conda env, there's a prompt suggesting to turn inheritEnv off.