"nginx error!" while loading webpage - nginx

Question

Background: I've installed and currently maintaining a OTRS v4.0 system with nginx as web server. The system was running until I added ssl port as well in nginx.conf and since then, I'm trying to connect to the webpage
http://localhost/otrs/index.pl
but is not responsive and displaying nginx error! The Page you are looking for is not found.
I removed the ssl sections from the nginx.conf file but still I'm not able to get back my previous state of web page.
In the error.log file it displays that it is not able to find the index.pl file open() "/usr/share/nginx/html/otrs/index.pl" failed (2: No such file or directory)
This message is logged whenever I hit the URL(http://localhost/otrs/index.pl).
In the otrs.log file it just logs in the PID.
Is there any way-out without having to re-install the otrs again? or any other log files I've missed to check
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
events {
worker_connections 1024;
#debug_connection 10.0.2.15;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
#listen 80;
server_name server.unixmen.local;
root /usr/share/nginx/html;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
}
?
Thanks in advance!

Answer 1

You have confused your default servers and nginx is trying to serve the wrong content.
OTRS uses fastcgi and will have it's own config file in the /etc/nginx/conf.d directory. The file you have posted is the default nginx config which has little to do with OTRS.
Change your listen directive to:
#listen 80 default_server;
listen 80;
This will discourage the default nginx config from handling unknown host connections to https://localhost and assuming it worked previously then the system should work again. If not then post the OTRS config from /etc/nginx/conf.d/something.conf and we'll be able to see what else is happening.

Answer 2

Thanks for your replies. I got the solution!
Perhaps, it was a silly mistake from my end ;)
First of all, I forgot to mention in the question that I also ran another web server on the same machine, Apache. At the initial stage, both the servers were configured at same port ->80. So, the OTRS was running on Apache instead of nginx(I'm using this as well for another purpose!). Later on, to avoid the confusion i changed the port in Apache configuration from 80 to 8080 and right from this moment the server stopped serving the OTRS.
So now, when I use http://localhost:8080/otrs/index.pl it's working correctly.
Next time, I would take enough care to change server configuration wisely while working on multiple web servers.