通过Terraform管理负载均衡服务- CodeSample-阿里云示例代码库

通过Terraform管理负载均衡服务

简介： 本文介绍如何使用Terraform创建一个负载均衡实例，并为其添加监听器。

前提条件

在开始之前，请您确保完成以下操作：

使用Terraform，您需要一个阿里云账号和访问密钥（AccessKey）。请在阿里云控制台中的AccessKey管理页面上创建和查看您的AccessKey。
已经安装并配置了Terraform，具体操作请参见在本地安装和配置Terraform和在Cloud Shell中使用Terraform。

操作步骤

创建一个预付费的负载均衡实例。

创建terraform.tf文件，输入以下内容，并保存在当前的执行目录中。

说明需要为每个Terraform项目创建一个独立的执行目录。在初始化配置之前至少需要有1个.tf文件。
```
resource "alicloud_slb" "instance" {
  name                 = "slb_worder"
  internet_charge_type = "PayByTraffic"
  internet             = "true"
}
```

运行terraform apply开始创建。出现类似下面的日志，说明创建成功。

alicloud_slb.instance: Creating...
  address:              "" => "<computed>"
  instance_charge_type: "" => "PostPaid"
  internet:             "" => "true"
  internet_charge_type: "" => "PayByTraffic"
  name:                 "" => "slb_worder"
alicloud_slb.instance: Creation complete after 3s (ID: lb-bp1mq8qmsxl96pw61ruja)

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

运行terraform show查看已创建的负载均衡实例。

添加监听。以下示例添加了tcp、udp和http三种协议的监听

创建listener.tf文件，输入以下内容，并保存在当前的执行目录中。

说明在该目录下所有*.tf 文件都会被terraform自动加载。因此，用户可以按照实际用途将配置信息写入不同的文件中。

resource "alicloud_slb_listener" "tcp" {
  load_balancer_id          = alicloud_slb.instance.id
  backend_port              = "22"
  frontend_port             = "22"
  protocol                  = "tcp"
  bandwidth                 = "10"
  health_check_type         = "tcp"
  persistence_timeout       = 3600
  healthy_threshold         = 8
  unhealthy_threshold       = 8
  health_check_timeout      = 8
  health_check_interval     = 5
  health_check_http_code    = "http_2xx"
  health_check_connect_port = 20
  health_check_uri          = "/console"
  established_timeout       = 600
}

resource "alicloud_slb_listener" "udp" {
  load_balancer_id          = alicloud_slb.instance.id
  backend_port              = 2001
  frontend_port             = 2001
  protocol                  = "udp"
  bandwidth                 = 10
  persistence_timeout       = 3600
  healthy_threshold         = 8
  unhealthy_threshold       = 8
  health_check_timeout      = 8
  health_check_interval     = 4
  health_check_connect_port = 20
}

resource "alicloud_slb_listener" "http" {
  load_balancer_id          = alicloud_slb.instance.id
  backend_port              = 80
  frontend_port             = 80
  protocol                  = "http"
  sticky_session            = "on"
  sticky_session_type       = "insert"
  cookie                    = "testslblistenercookie"
  cookie_timeout            = 86400
  health_check              = "on"
  health_check_uri          = "/cons"
  health_check_connect_port = 20
  healthy_threshold         = 8
  unhealthy_threshold       = 8
  health_check_timeout      = 8
  health_check_interval     = 5
  health_check_http_code    = "http_2xx,http_3xx"
  bandwidth                 = 10
  request_timeout           = 80
  idle_timeout              = 30
}

运行terraform apply开始创建。出现类似下面的日志，说明创建成功。

alicloud_slb_listener.tcp: Creation complete after 5s (ID: lb-bp1mq8qmsxl96pw61ruja:22)
alicloud_slb_listener.http: Creation complete after 5s (ID: lb-bp1mq8qmsxl96pw61ruja:80)
alicloud_slb_listener.udp: Creation complete after 5s (ID: lb-bp1mq8qmsxl96pw61ruja:2001)

Apply complete! Resources: 3 added, 0 changed, 0 destroyed.

运行terraform show查看已创建的监听。

负载均衡