Nginx build load balancing solution

Herbal tea ice 2020-11-13 03:27:03
nginx build load balancing solution


Catalog

1. install nginx

2. View version

3. View running status

4. Verify startup

5. Description of relevant contents

7. Deploy django service

9. Error records encountered

reference


Nginx Very easy to use , Do static file parsing 、 Reverse proxy 、 Load balancing is very easy to use . Record today in ubuntu16.04 Upper use nginx to django Project build load balancing solution .

1. install nginx

Enter the command :apt install nginx

 

2. View version

Enter the command :nginx –v

3. View running status

Enter the command :sudo systemctl status nginx

After the default installation is successful ,nginx It started up normally , If not started , You can start nginx

service nginx start
# perhaps
systemctl restart nginx

4. Verify startup

Enter... In the browser :http://127.0.0.1, The display below indicates success

 

 

5. Description of relevant contents

  1. /usr/sbin/nginx   The main program
  2. /etc/nginx  Store the configuration file
  3. /etc/share/nginx  Store static files
  4. /var/log/nginx Directory where logs are stored

6. Modify the configuration file

The command line switches to /etc/nginx Catalog , modify nginx.conf, stay http{} Add the following new content in :      

upstream python.server.com{
        server 127.0.0.1:8001 weight=10;
        server 127.0.0.1:8002 weight=10;
        server 127.0.0.1:8003 weight=10;
    }
       server{
           listen        8006;
           server_name   127.0.0.1;
           location / {
              proxy_pass http://python.server.com;
              root  html;
              index index.html index.htm; 
           }
            error_page 500 502 503 504 /50x.html;
            location = /50x.html{
              root html;
           }
       }

The new file screenshot is shown below :

Be careful :

(1) The space in each line must be typed by the space bar , Out-of-service tab key , Otherwise, the startup will report an error (2)

(2) In the use of vi When ordered , If it appears, click the direction key to display A perhaps B, And backspace When the buttons don't work , Uninstall vim, Re install the full amount of , The relevant commands are as follows :

uninstall vim-tiny:

sudo apt-get remove vim-common

install vim ful:

sudo apt-get install vim

7. Deploy django service

Copy a single project , Copy it into three folders , as follows :

Start these three projects from the command line , The command to start the project is the same , But each project uses a different port :

python manage.py runserver 127.0.0.1:8001
python manage.py runserver 127.0.0.1:8002
python manage.py runserver 127.0.0.1:8003

8. Verify load balancing

Three projects view.py There's a default index Interface method , We type... Directly into the browser :http://1270.0.1:8006/index/, And keep refreshing , It will be found that the method will automatically be in the three services index Method switching .

So far through nginx The load balancing scheme is set up .

 

9. Error records encountered

Sometimes the following error message may appear :

It is reported that the domain name does not conform to the specification , There are several possible reasons for this problem :

1nginx in nginx.conf There is a problem with the configuration of

upstream and proxy_pass The correct domain name format should be used later , Just format it correctly , namely : You can't have underscores like this .

2python Service ALLOWED_HOSTS

If you have configured the domain name format correctly , But there's still this problem , Then configure the... In the project setting.py Of documents ALLOWED_HOSTS, modify ALLOWED_HOSTS=[] by ALLOWED_HOSTS=[‘*’]. Or change it to ALLOWED_HOSTS=[‘python.server.com’] , And then restart python The service can be .

reference

【1】ubuntu Next vi Press the arrow key and it will become ABCD How to modify

【2】django - Use nginx Appears during deployment DisallowedHost at /

【3】Nginx Detailed configuration of load balancing and detailed explanation of use cases 【4】ubuntu install nginx

版权声明
本文为[Herbal tea ice]所创,转载请带上原文链接,感谢

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