terraform 配置github module source

 

terraform 支持多种module 的source 配置
以下是一个简单的使用github source的demo

测试项目

• 项目结构

├── init.tpl
├── main.tf

• 代码说明

main.tf 主要配置module block
module "users" {
  source = "github.com/rongfengliang/terraform-module-demo/modules/users"
  username = "dddddemo"
  consul_host ="http://127.0.0.1:8500"
}
resource "local_file" "foo" {
    content = "${module.users.exec_shell}"
    filename = "${path.module}/init.sh"
}
init.tpl 模板
#!/bin/bash
curl -X POST \
   ${consul_host} \
  -H 'Content-Type: application/json' \
  -H 'cache-control: no-cache' \
  -d '{
  "name":"${name}",
  "age": "${age}",
  "platform":"${platform}",
  "id":"${uuid()}"
}'

运行&&效果

使用方法和普通的方式是一样的

• get module

terraform get 

效果

terraform get
- module.users

• init

Initializing modules...
- module.users

Initializing provider plugins...

The following providers do not have any version constraints in configuration,
so the latest version was installed.

To prevent automatic upgrades to new major versions that may contain breaking
changes, it is recommended to add version = "..." constraints to the
corresponding provider blocks in configuration, with the constraint strings
suggested below.

* provider.local: version = "~> 1.2"
* provider.template: version = "~> 2.1"

Terraform has been successfully initialized!

You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.

If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.

• 查看plan

terraform plan

效果

Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.

data.template_file.init: Refreshing state...
local_file.foo: Refreshing state... (ID: bf52295095341d2d11821cecc698720af3a7d98f)

------------------------------------------------------------------------

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
-/+ destroy and then create replacement

Terraform will perform the following actions:

-/+ local_file.foo (new resource required)
      id: "bf52295095341d2d11821cecc698720af3a7d98f" => <computed> (forces new resource)
      content: "#!/bin/bash\ncurl -X POST \\\n http://\"http://127.0.0.1:8500\" \\\n -H 'Content-Type: application/json' \\\n -H 'cache-control: no-cache' \\\n -d '{\n \"name\":\"dddddemo\",\n \"age\": \"444\",\n \"platform\":\"mobile\",\n \"id\":\"ac61e848-238a-4646-c58e-e71560690deb\"\n}'" => "#!/bin/bash\ncurl -X POST \\\n http://\"http://127.0.0.1:8500\" \\\n -H 'Content-Type: application/json' \\\n -H 'cache-control: no-cache' \\\n -d '{\n \"name\":\"dddddemo\",\n \"age\": \"444\",\n \"platform\":\"mobile\",\n \"id\":\"67daebf6-21cb-56c6-4a29-fc829333b3e7\"\n}'" (forces new resource)
      filename: "/Users/dalong/mylearning/mymodule-ttf/init.sh" => "/Users/dalong/mylearning/mymodule-ttf/init.sh"

Plan: 1 to add, 0 to change, 1 to destroy.

------------------------------------------------------------------------

Note: You didn't specify an "-out" parameter to save this plan, so Terraform
can't guarantee that exactly these actions will be performed if
"terraform apply" is subsequently run.

• apply

terraform apply

效果

data.template_file.init: Refreshing state...
local_file.foo: Refreshing state... (ID: bf52295095341d2d11821cecc698720af3a7d98f)

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
-/+ destroy and then create replacement

Terraform will perform the following actions:

-/+ local_file.foo (new resource required)
      id: "bf52295095341d2d11821cecc698720af3a7d98f" => <computed> (forces new resource)
      content: "#!/bin/bash\ncurl -X POST \\\n http://\"http://127.0.0.1:8500\" \\\n -H 'Content-Type: application/json' \\\n -H 'cache-control: no-cache' \\\n -d '{\n \"name\":\"dddddemo\",\n \"age\": \"444\",\n \"platform\":\"mobile\",\n \"id\":\"ac61e848-238a-4646-c58e-e71560690deb\"\n}'" => "#!/bin/bash\ncurl -X POST \\\n http://\"http://127.0.0.1:8500\" \\\n -H 'Content-Type: application/json' \\\n -H 'cache-control: no-cache' \\\n -d '{\n \"name\":\"dddddemo\",\n \"age\": \"444\",\n \"platform\":\"mobile\",\n \"id\":\"3a605320-88e5-47c4-e667-05f4a08b233a\"\n}'" (forces new resource)
      filename: "/Users/dalong/mylearning/mymodule-ttf/init.sh" => "/Users/dalong/mylearning/mymodule-ttf/init.sh"

Plan: 1 to add, 0 to change, 1 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

local_file.foo: Destroying... (ID: bf52295095341d2d11821cecc698720af3a7d98f)
local_file.foo: Destruction complete after 0s
local_file.foo: Creating...
  content: "" => "#!/bin/bash\ncurl -X POST \\\n http://\"http://127.0.0.1:8500\" \\\n -H 'Content-Type: application/json' \\\n -H 'cache-control: no-cache' \\\n -d '{\n \"name\":\"dddddemo\",\n \"age\": \"444\",\n \"platform\":\"mobile\",\n \"id\":\"3a605320-88e5-47c4-e667-05f4a08b233a\"\n}'"
  filename: "" => "/Users/dalong/mylearning/mymodule-ttf/init.sh"
local_file.foo: Creation complete after 0s (ID: f29538bda6dcd489041d6cc535c939287d801a70)

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

• 生成的文件
  init.sh

#!/bin/bash
curl -X POST \
  http://"http://127.0.0.1:8500" \
  -H 'Content-Type: application/json' \
  -H 'cache-control: no-cache' \
  -d '{
  "name":"dddddemo",
  "age": "444",
  "platform":"mobile",
  "id":"3a605320-88e5-47c4-e667-05f4a08b233a"
}'

说明

terraform module source 对于多种类型的支持还是很不全的，对于我们进行代码的复用还是很方便的

参考资料

https://www.terraform.io/docs/modules/sources.html
https://github.com/rongfengliang/terraform-module-demo