Use of load balancing

Load balancing uses

Task a ： Configure the backend web The server （ECS The server ）

Task 2 ： Create a load balancing instance

Task three ： Configure load balancing instances

Task 4 ： Configure session persistence

One 、 Configure the backend web The server

1. Remote login two ECS The server

 install httpd, Provide default home page , Start the service .

[[email protected] ~]# yum install httpd -y
[[email protected] ~]# echo "This is `hostname -I` test page." > /var/www/html/index.html
[[email protected] ~]# systemctl start httpd

2. Security group inbound release 80 port , Two sets of ECS The server uses the same security group

3. Website access test

Two 、 Create a load balancing instance

Operation steps

1. Log in to the load balancing management console .

2. On the left navigation bar , Click on the instance > Instance management .

3. On the instance management page , Click Create load balancing .

4. In load balancing SLB Purchase page , Configure the load balancing instance as needed .

3、 ... and 、 Configure load balancing instances

1. Log in to the load balancing management console .

2. On the instance management page , Click the listening configuration wizard in the instance operation column to configure listening .

3. In the protocol & Under the monitoring tab , Configure listening rules , Other configurations remain the default options .

4. Choose a load balancing Protocol ： This tutorial selects TCP agreement .

5. Listening port ： The front-end protocol and port of the load balancing system used to receive requests and forward requests to the back-end server . This tutorial port is set to 80.

Scheduling algorithm ： Choose polling .

6. Click next , Under the backend server tab , Select the default server group , Click continue to add , Add back-end server

7. On my server page , Check the previously created ECS01 and ECS02 example , Click next .

8. Configuration weight , The greater the weight, the more requests to forward , The default is 100, Keep the default .

9. Under the default server tab , Configure the back-end protocol port ,ECS The back-end port open on the instance to receive requests , At the same time Repeatable in a load balancing instance . Port set to 80

Enter the service address of the load balancing instance , Test the load balancing service .

Four 、 Configure session persistence

Open session hold

The test again ：

The experiment is finished , Release instance .