Issue Node.js using plesk extension

[jtthemarine]

I have been working on a node.js webapp on my server for a while. I recently updated my plesk to onyx and noticed they had an extension.

So I backed up my node.js app, uninstalled node.js from the server and proceeded to add the extension.

I re-uploaded the app and added it via the plesk panel. However it never starts.

I figured I messed something up so I uploaded a fresh simple "Hello world" as the how to explains. Still nothing.

ps x shows no case of node running even after the panel says it is running.

 

[IgorG]

Try to check it according to this article - https://www.plesk.com/blog/node-js-plesk-onyx/
I hope it will work correctly.

 

[jtthemarine]

That is actually the article I was referring to.

The server.js contains

const http = require('http');

http.createServer(function(request, response) {
  response.writeHead(200, {'Content-Type': 'text/plain'});
  response.end("Hello, World!\n");
}).listen(process.env.PORT);

console.log('App is running...');

Going to the url displays an apache2 test page.

ps x shows no instance of node running

 

[jtthemarine]

After re-reading the article again, I noticed that it mention errors are posted to the main error_log and not the domains. So after pulling that up I found there is a permission error.

[Tue Jan 24 23:00:30 2017] [notice] caught SIGTERM, shutting down
[Tue Jan 24 23:00:30 2017] [notice] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t:s0
[Tue Jan 24 23:00:30 2017] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Tue Jan 24 23:00:30 2017] [error] *** Passenger could not be initialized because of this error: Unable to start the Phusion Passenger watchdog (/usr/lib64/passenger/support-binaries/PassengerAgent): Permission denied (errno=13)

I have tried

chcon -v --type=httpd_sys_content_t server.js

However the same error persists

 

[IgorG]

Have you tried to disable SELinux?

 

[jtthemarine]

Just set Selinux to permissive and it does function. However shouldn't of setting the type of allowed it to run with Selinux enabled?

 

[Niek_Beernink]

You can leave selinux in enabled mode if you set the following two selinux booleans;

setsebool -P httpd_run_stickshift 1
setsebool -P httpd_execmem 1

However, I think this issue should be resolved in the psa-selinux package as that comes with a custom Plesk selinux policy.