Hi, our website is currently downed with error code 502 Bad Gateway and our web developer is currently out on Vacation. I am just an IT person on our network and i don;t have web coding knowledge. Hopefully, i can i get here to fix this issue.
here is what i know: Ubuntu Ruby on Rails on 14.04 (Nginx + Unicorn)
When i login to digital ocean, i see the droplet status was off , then I turned it on, but website still shows 502 Bad Gateway, i then tried to power cycle it, still the same thing. i tried the website by IP address and no luck. i can ping the IP address though…any idea?
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Hello,
In addition to what has already been mentioned, I would recommend following these steps in case that you are having any problems with your nginx server and you are unsure on what the problem is:
If nginx is running you should see something like this:
If nginx is not running then the output would look like this:
Then check the status agian and make sure that nginx remains running.
If you get an error, you would need to fix that problem and then you could restart nginx:
Syntax OK
when runningnginx -t
then your confiruation is correct, so I would recommend checking your error logs:Find the user that your nginx service is running as:
If you are using Ubuntu, the user should be
www-data
, so you would need to make sure that your files and folders are owned by that user, so nginx could read and write to those files:ufw
allows TCP connections on port 80 and 443:If this is the case, you can follow the steps from this article here on how to configure your
ufw
:https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-18-04
That is pretty much it, with all of the above information you should be able to narrow down the problem.
For more information I would suggest checking out this article here:
https://www.digitalocean.com/community/tutorials/how-to-troubleshoot-common-site-issues-on-a-linux-server
And here is also a quick video demo on how to do that as well:
Hope that this helps! Regards, Bobby Source: How to Troubleshoot Common Nginx Issues on Linux Server?
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