Install nginx on ubuntu

Reference document:

https://nginx.org/en/linux_packages.html

Note:

The ubuntu version is 18.04 lts, if you don’t sure your linux version, you can view the version with lsb_release -a. Then you can replace bionic with correct version(also called codename).

sudo touch /etc/apt/source.list.d/nginx.list

sudo vi /etc/apt/source.list.d/nginx.list

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deb [arch=amd64] http://nginx.org/packages/ubuntu/ bionic nginx
deb-src http://nginx.org/packages/ubuntu/ bionic nginx

[arch=amd64] means just available for amd64
download the nginx key from Nginx Key
sudo apt add nginx_signing.key, then you can delete this file
sudo apt update
sudo apt install nginx
sudo service nginx start
the default config directory is /etc/nginx

example for http config file:

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server {
    listen       80;
    server_name  example.com;

    #charset koi8-r;
    access_log  /var/log/nginx/host.access.log  main;
    error_log  /var/log/nginx/host.error.log  warn;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    #error_page  404              /404.html;

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

example for https config file:

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server {
    listen       443 ssl http2;
    server_name  example.com;

    charset utf-8;
    access_log  /var/log/nginx/host.access.log  main;
    error_log  /var/log/nginx/host.error.log  warn;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    ssl_certificate ~/path/fullchain.pem;
    ssl_certificate_key ~/path/privkey.pem;
    ssl_trusted_certificate ~/path/chain.pem;

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #    deny  all;
    #}
}

example for redirect config file:

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server {
    listen       80;
    server_name  example.com;

    access_log  /var/log/nginx/host.access.log  main;
    error_log  /var/log/nginx/host.error.log  warn;

    return 301 https://example.com$request_uri;
}

you can execute nginx -t for test config file.