Enable port 443 on Linux Nginx - linux

Question

I'm trying to enable port 443 on Linux Nginx as I'm trying to install an SSL certificate. I've ran sudo lsof -i -P -n | grep LISTEN and got the following:
rpcbind 1751 rpc 8u IPv4 15914 0t0 TCP *:111 (LISTEN)
rpcbind 1751 rpc 11u IPv6 15917 0t0 TCP *:111 (LISTEN)
master 2172 root 13u IPv4 17752 0t0 TCP 127.0.0.1:25 (LISTEN)
nginx 2264 root 6u IPv4 19741 0t0 TCP *:80 (LISTEN)
nginx 2264 root 7u IPv6 19742 0t0 TCP *:80 (LISTEN)
nginx 2265 nginx 6u IPv4 19741 0t0 TCP *:80 (LISTEN)
nginx 2265 nginx 7u IPv6 19742 0t0 TCP *:80 (LISTEN)
nginx 2266 nginx 6u IPv4 19741 0t0 TCP *:80 (LISTEN)
nginx 2266 nginx 7u IPv6 19742 0t0 TCP *:80 (LISTEN)
sshd 7640 root 3u IPv4 1317041 0t0 TCP *:22 (LISTEN)
sshd 7640 root 4u IPv6 1317050 0t0 TCP *:22 (LISTEN)
sudo netstat -tulpn | grep :443 doesn't give any result either.
I ran sudo iptables -I INPUT -p tcp -m tcp --dport 443 -j ACCEPT but this didn't work. I did not get any results after this command.
My server is running on AWS EC2 and my security group has HTTPS enabled, but I still have the same issue.
My nginx.conf looks like this. I've added settings for a TLS enabled server listening on port 443:
server {
listen 80;
listen [::]:80;
server_name _;
location / {
root /home/ec2-user;
try_files $uri $uri/ /index.html;
# add_header 'Access-Control-Allow-Origin' '*';
}
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
error_page 404 /404.html;
location = /404.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
# Settings for a TLS enabled server.
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name _;
root /home/ec2-user;
ssl_certificate "/etc/pki/nginx/server.crt";
ssl_certificate_key "/etc/pki/nginx/private/server.key";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 10m;
ssl_ciphers PROFILE=SYSTEM;
ssl_prefer_server_ciphers on;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}

Answer 1

First check if ngnix is running with systemctl status nginx
If not then there is something wrong with config file and I guess your ssl certificates are missing. If that is the case then try to generate certificates and place in same path as you mention in your nginx.conf with owner of that dir as nginx.