First, a wave of Dockers

First of all, what is a Docker? Here is the introduction of Baidu Baike:

Three concepts

There are three concepts in Docker: image, container and repository. The image, needless to say, will form a container when it runs. The image can be pulled from the remote Dockerhub repository, uploaded, or saved in its own local repository.

The use of the Docker

Ok, first of all, let’s install a Docker on our server, because we choose a centOS system, so it is very simple to install Docker.

Very perfunctory installation tutorial

Here is to throw you a rookie tutorial link, we follow the link to install it.

Then run a wave of commands to see if it is installed:

docker
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After running the command, you can see some help information of Docker, which indicates that we have installed Docker.

Some simple Docker operations

Here’s a quick overview of how docker works:

1. View the current mirrorsdocker images
2. Run to delete an unwanted imagedocker rm <image_id>Image_id can be found in the previous step when viewing the image
3. You can also usedocker build  <image_tag>To build an image, which is almost unnecessary for beginners
4. Pull the mirrordocker pull <image>
5. Run an image in a container is also very simple, note, do not need to run a container, will automatically allocate a container, and run if there is no image will automatically pull the image, such as:docker run <image>
6. View the running containerdocker psView all containersdocker ps -a
7. Start the containerdocker start <container_id>Stop the containerdocker stop <container_id>Remove the containerdocker rm <container_id>

Well, these commands are basically enough for us to use, and we’ll see if we don’t.

Pull an Nginx image and let it run

First pull and run an nginx image from docker:

docker pull nginx
docker run --name nginx-server -p 4000:80 -d nginx
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Nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / nginx-server: / / When we access port 4000 of the cloud server, we are accessing port 80 of the Nginx service.

Check to see if it works:

dicker ps
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Good, it’s up and running, and you should be able to see it next by going to http://IP :4000/.

A simple Nginx configuration file

By the way, my configuration is very simple, long like this, you go to your own ha, not to learn:

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    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;

    keepalive_timeout  65;

    #gzip on;

    server {
        listen       80;
        server_name  47.92.164.250;

        #charset koi8-r;

        #access_log logs/host.access.log main;

        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   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        location /api-lottery/ {
           proxy_pass   http://apis.juhe.cn/lottery/;
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        # root html;
        # fastcgi_pass 127.0.0.1:9000;
        # fastcgi_index index.php;
        # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
        # include fastcgi_params;
        #}

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

    include /etc/nginx/conf.d/*.conf;
}
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If not, stop the container, start it again, and wait. The configuration changes will be delayed.