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[Question] Coder v2 OSS behind Cloudflare#9130

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YueMiyuki asked this question inGeneral
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Hi. I have recently deployed Coder v2 OSS on my server and I use cloudflare tunnels to provide secure access to the server.
The question is that if I try to open a worksapce in VS Code Desktop, it fails to load the workspace.
Here is VSCOUTPUT tab:

[19:35:28.450] Log Level: 2[19:35:28.463] VS Code version: 1.81.1[19:35:28.463] Remote-SSH version: remote-ssh@0.102.0[19:35:28.464] win32 x64[19:35:34.363] SSH Resolver called for "ssh-remote+coder-vscode--yue--main", attempt 1[19:35:34.364] "remote.SSH.useLocalServer": false[19:35:34.365] "remote.SSH.showLoginTerminal": false[19:35:34.365] "remote.SSH.remotePlatform": {}[19:35:34.366] "remote.SSH.path": undefined[19:35:34.366] "remote.SSH.configFile": undefined[19:35:34.366] "remote.SSH.useFlock": true[19:35:34.367] "remote.SSH.lockfilesInTmp": false[19:35:34.367] "remote.SSH.localServerDownload": auto[19:35:34.367] "remote.SSH.remoteServerListenOnSocket": false[19:35:34.367] "remote.SSH.showLoginTerminal": false[19:35:34.368] "remote.SSH.defaultExtensions": [][19:35:34.368] "remote.SSH.loglevel": 2[19:35:34.368] "remote.SSH.enableDynamicForwarding": true[19:35:34.369] "remote.SSH.enableRemoteCommand": false[19:35:34.369] "remote.SSH.serverPickPortsFromRange": {}[19:35:34.369] "remote.SSH.serverInstallPath": {}[19:35:34.399] SSH Resolver called for host: coder-vscode--yue--main[19:35:34.399] Setting up SSH remote "coder-vscode--yue--main"[19:35:34.403] Using commit id "6c3e3dba23e8fadc360aed75ce363ba185c49794" and quality "stable" for server[19:35:34.408] Install and start server if needed[19:35:35.522] Checking ssh with "C:\Program Files\ImageMagick-7.1.1-Q16-HDRI\ssh.exe -V"[19:35:35.526] Got error from ssh: spawn C:\Program Files\ImageMagick-7.1.1-Q16-HDRI\ssh.exe ENOENT[19:35:35.526] Checking ssh with "C:\Program Files\Eclipse Adoptium\jdk-17.0.6.10-hotspot\bin\ssh.exe -V"[19:35:35.527] Got error from ssh: spawn C:\Program Files\Eclipse Adoptium\jdk-17.0.6.10-hotspot\bin\ssh.exe ENOENT[19:35:35.527] Checking ssh with "C:\Program Files (x86)\Intel\iCLS Client\ssh.exe -V"[19:35:35.529] Got error from ssh: spawn C:\Program Files (x86)\Intel\iCLS Client\ssh.exe ENOENT[19:35:35.529] Checking ssh with "C:\Program Files\Intel\iCLS Client\ssh.exe -V"[19:35:35.530] Got error from ssh: spawn C:\Program Files\Intel\iCLS Client\ssh.exe ENOENT[19:35:35.530] Checking ssh with "C:\Windows\system32\ssh.exe -V"[19:35:35.532] Got error from ssh: spawn C:\Windows\system32\ssh.exe ENOENT[19:35:35.532] Checking ssh with "C:\Windows\ssh.exe -V"[19:35:35.534] Got error from ssh: spawn C:\Windows\ssh.exe ENOENT[19:35:35.534] Checking ssh with "C:\Windows\System32\Wbem\ssh.exe -V"[19:35:35.535] Got error from ssh: spawn C:\Windows\System32\Wbem\ssh.exe ENOENT[19:35:35.536] Checking ssh with "C:\Windows\System32\WindowsPowerShell\v1.0\ssh.exe -V"[19:35:35.537] Got error from ssh: spawn C:\Windows\System32\WindowsPowerShell\v1.0\ssh.exe ENOENT[19:35:35.537] Checking ssh with "C:\Program Files\Intel\WiFi\bin\ssh.exe -V"[19:35:35.539] Got error from ssh: spawn C:\Program Files\Intel\WiFi\bin\ssh.exe ENOENT[19:35:35.539] Checking ssh with "C:\Program Files\Common Files\Intel\WirelessCommon\ssh.exe -V"[19:35:35.541] Got error from ssh: spawn C:\Program Files\Common Files\Intel\WirelessCommon\ssh.exe ENOENT[19:35:35.541] Checking ssh with "C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL\ssh.exe -V"[19:35:35.542] Got error from ssh: spawn C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL\ssh.exe ENOENT[19:35:35.542] Checking ssh with "C:\Program Files\Intel\Intel(R) Management Engine Components\DAL\ssh.exe -V"[19:35:35.543] Got error from ssh: spawn C:\Program Files\Intel\Intel(R) Management Engine Components\DAL\ssh.exe ENOENT[19:35:35.544] Checking ssh with "C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT\ssh.exe -V"[19:35:35.545] Got error from ssh: spawn C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT\ssh.exe ENOENT[19:35:35.545] Checking ssh with "C:\Program Files\Intel\Intel(R) Management Engine Components\IPT\ssh.exe -V"[19:35:35.547] Got error from ssh: spawn C:\Program Files\Intel\Intel(R) Management Engine Components\IPT\ssh.exe ENOENT[19:35:35.547] Checking ssh with "C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common\ssh.exe -V"[19:35:35.548] Got error from ssh: spawn C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common\ssh.exe ENOENT[19:35:35.549] Checking ssh with "C:\WINDOWS\system32\ssh.exe -V"[19:35:35.550] Got error from ssh: spawn C:\WINDOWS\system32\ssh.exe ENOENT[19:35:35.551] Checking ssh with "C:\WINDOWS\ssh.exe -V"[19:35:35.552] Got error from ssh: spawn C:\WINDOWS\ssh.exe ENOENT[19:35:35.552] Checking ssh with "C:\WINDOWS\System32\Wbem\ssh.exe -V"[19:35:35.554] Got error from ssh: spawn C:\WINDOWS\System32\Wbem\ssh.exe ENOENT[19:35:35.554] Checking ssh with "C:\WINDOWS\System32\WindowsPowerShell\v1.0\ssh.exe -V"[19:35:35.555] Got error from ssh: spawn C:\WINDOWS\System32\WindowsPowerShell\v1.0\ssh.exe ENOENT[19:35:35.555] Checking ssh with "C:\WINDOWS\System32\OpenSSH\ssh.exe -V"[19:35:35.607] > OpenSSH_for_Windows_9.2p1, LibreSSL 3.6.2[19:35:35.611] Running script with connection command: "C:\WINDOWS\System32\OpenSSH\ssh.exe" -T -D 51128 "coder-vscode--yue--main" bash[19:35:35.615] Terminal shell path: C:\WINDOWS\System32\cmd.exe[19:35:37.175] > ssh: Could not resolve hostname coder-vscode--yue--main: \237o\267\250\327R\204e\337@\314\250\326\367\231C\241\243> The process tried to write to a nonexistent pipe.> �]0;C:\WINDOWS\System32\cmd.exe�[19:35:37.176] Got some output, clearing connection timeout[19:35:38.459] "install" terminal command done[19:35:38.459] Install terminal quit with output: �]0;C:\WINDOWS\System32\cmd.exe�[19:35:38.460] Received install output: �]0;C:\WINDOWS\System32\cmd.exe�[19:35:38.461] Failed to parse remote port from server output[19:35:38.464] Resolver error: Error: at m.Create (c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:584145)at t.handleInstallOutput (c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:582705)at t.tryInstall (c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:681881)at async c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:644110at async t.withShowDetailsEvent (c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:647428)at async t.resolve (c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:645160)at async c:\Users\YueYue\.vscode\extensions\ms-vscode-remote.remote-ssh-0.102.0\out\extension.js:1:720916[19:35:38.474] ------
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Replies: 3 comments 11 replies

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This might be related to your question.
https://discord.com/channels/747933592273027093/1059038889878241310

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10 replies
@phorcys420
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to use CloudFlare Tunnels with the CLI on the client, you will probably need to do something like this:

export TOKEN=$(cloudflared access token -app=http://coder.example.com)coderexport CODER_HEADER=cf-access-token=$TOKENcoder login https://coder.example.com

or

export TOKEN=$(cloudflared access token -app=http://coder.example.com)coder coder login https://coder.example.com --header cf-access-token=$TOKEN

(https://developers.cloudflare.com/cloudflare-one/tutorials/cli/#using-the-token-as-an-environment-variable)

@phorcys420
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support for--header was added in#3527
on a side note, since quite a bit of people are using CF Access -- it could be worthy to add a section to our docs. (cc:@matifali, thoughts?)

@matifali
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Yes. I would personally opt for a guide on how to host Coder behind a cloud flare tunnel.

@alphamichael
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Thank you so much@phorcys420 and@matifali!! I really appreciate it!

Also, I tried the original discord link again and this time it loaded - I think I hadn't completed onboarding in Discord so it look like the messages were no longer available.

@YueMiyuki
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Hi- Sorry for the late reply.
I gave up coder behind cloudflare tunnel years ago and switched to cloudflare dns + nginx. It's happy to see that code sever is now supporting cloudflare tunnel. I will definitely try that out later :)

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Once running the commands@phorcys420 listed, I also needed to run:

coder config-ssh

To get the cloudflared token added to the SSH config. Then I needed to connect to a remote via VSCode and specify the SSH path in the SSH config for the workspace (ssh coder.workspace-name.main). I am unable to use the VSCode button on the workspace or open a previous project in VSCode to connect when I am offsite.

Not an issue really since I can use the SSH path and remote connections, just something to note for future people looking to connect via this method.

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1 reply
@matifali
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When you connect via the VSCode button it uses thecoder-remote extension that writes it own ssh-config.

To set a header for the extension you need to set it in the extension settings in VSCode.
image

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you need to enable websockets on cloudflare, and either disable bot fight mode, or add a custom rule to prevent the cloudflare anti-bot measures from stopping coder

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6 participants
@YueMiyuki@neilmcguigan@chrisbalmer@matifali@alphamichael@phorcys420
Converted from issue

This discussion was converted from issue #9124 on August 16, 2023 15:48.

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