Error: EPERM, operation not permitted with Node.js and Etherpad Lite - node.js

Question

I'm attempting to get an Etherpad Lite site up and running with IIS on my computer before I upload it to Azure for Web Sites, but I get this error when I try (http://pastebin.com/4rZWbqix):
iisnode encountered an error when processing the request. HRESULT: 0x2
HTTP status: 500 HTTP reason: Internal Server Error
You are receiving this HTTP 200 response because
system.webServer/iisnode/#devErrorsEnabled configuration setting is
'true'.
In addition to the log of stdout and stderr of the node.exe process,
consider using debugging and ETW traces to further diagnose the
problem.
The last 64k of the output generated by the node.exe process to stdout
and stderr is shown below: fs.js:520 return
binding.lstat(pathModule._makeLong(path));
^ Error: EPERM, operation not permitted 'C:\Users\Matthew'
at Object.fs.lstatSync (fs.js:520:18)
at Object.realpathSync (fs.js:1047:21)
at tryFile (module.js:142:15)
at Function.Module._findPath (module.js:181:18)
at Function.Module._resolveFilename (module.js:336:25)
at Function.Module._load (module.js:280:25)
at Module.runMain (module.js:492:10)
at process.startup.processNextTick.process._tickCallback (node.js:244:9)
There is no fs.js file in Etherpad's directory, so I would assume that it's some part of Node.js that's having a problem. I'm new to Node.js, so any help would be appreciated.
EDIT 1: I'm currently looking into alternatives to Azure, and granting permissions to C:\Users\Matthew. But would it be possible to somehow modify fs.js to put a try/catch around binding.lstat?
EDIT 2: After playing around with it a little (adding the permissions worked!), I've gotten it to work. But now loading 127.0.0.1:81 returns:
iisnode encountered an error when processing the request. HRESULT: 0x2
HTTP status: 500 HTTP reason: Internal Server Error
You are receiving this HTTP 200 response because
system.webServer/iisnode/#devErrorsEnabled configuration setting is
'true'.
In addition to the log of stdout and stderr of the node.exe process,
consider using debugging and ETW traces to further diagnose the
problem.
The last 64k of the output generated by the node.exe process to stdout
and stderr is shown below:
[x1B][33m[2012-10-03 20:28:13.587] [WARN]
console - [x1B][39mNo settings file found. Continuing using defaults!
[x1B][32m[2012-10-03 20:28:14.338] [INFO] console - [x1B][39mInstalled
plugins:
It would seem like this isn't an error, since what's outputted is what's expected, but it seems to stop at plugins.formatPlugins().

Answer 1

Make sure the user identity associated with the IIS application pool running your node.js application has appropriate filesystem permissions to the location where you deployed your application (looks like c:\users\matthew in this case).
If you are running your app within the Default App Pool and using default IIS user, you should be able to grant necessary permissions with:
%systemdrive%\windows\system32\icacls.exe c:\users\matthew /grant IIS_IUSRS:(OI)(CI)F

Answer 2

Case
Error: EPERM, operation not permitted 'C:\Users\Matthew'
This error occour because the user IIS_IUSRS, does not have access to this folder C:\Users\Matthew
Resolution
You can put your application on a 'public folder', example: 'C:\Test\[yourapplication]' and gives access to user IIS_IUSRS only to this folder.

Answer 3

It is about permission on the folder 'C:\Users\Matthew'. Take ownership and give modify permissions.

Answer 4

I had the same issue, and when I tried to use the latest node version via
nvm use [some node version 10.12.0 in my case] it output that it succeed but when I run node -v it showed to me that actually I'm on a node of 8.
I solved that by login as second windows user (although they both admins and node installed on C:/) and there I use the nvm use 10.12.0 to replace the node version, and when I back login with current user it worked.

Answer 5

I wouldn't recommend Azure for hosting Etherpad Lite, we don't optimize for Microsoft's services, this includes Microsoft Windows. If it's an option please use linux to host your node instances, you will be much happier in my experience.