Managing Applications and Infrastructure with Terraform-Deploying Infrastructure with Terraform-(1)Terraform Basics and a Docker Deployment-(3)Interpolation Syntax
2018年10月04日
~/docker# terraform show
Insert several lines
~/docker# vim main.tf
~/docker# terraform plan
~/docker# terraform apply
~/docker# docker ps -a
Access web page using the IP address of the hosting server
http://[PublicIP]/
Destroy the Terraform-managed infrastructure.
~/docker# terraform destroy
~/docker# docker image ls
~/docker# docker ps -a
References
Command: destroy
Managing Applications and Infrastructure with Terraform-Deploying Infrastructure with Terraform
1. Terraform Basics and a Docker Deployment
3. Interpolation Syntax
Note: This page is about Terraform 0.11 and earlier. For Terraform 0.12 and later, see Configuration Language: Expressions and Configuration Language: Functions.
Interpolation (插补文字; 插入文字) Syntax
https://www.terraform.io/docs/configuration/interpolation.html
Docker Provider
https://www.terraform.io/docs/providers/docker/index.html
Append below lines to main.tf.
~/docker# vim main.tf
# Start the container, reference the above "docker_image" and "image_id"
resource "docker_container" "container_id" {
name = "blog"
image = "${docker_image.image_id.latest}"
}
~/docker# terraform show
docker_image.image_id: id = sha256:5d42eda6891259afd89cab3a0f005c18735a17628a74d9bf3f85d17756928c73ghost:latest latest = sha256:5d42eda6891259afd89cab3a0f005c18735a17628a74d9bf3f85d17756928c73 name = ghost:latest
Insert several lines
~/docker# vim main.tf
# Start the container, reference the above "docker_image" and "image_id"
resource "docker_container" "container_id" {
name = "blog"
image = "${docker_image.image_id.latest}"
ports {
internal = "2368"
external = "80"
}
}
~/docker# terraform plan
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.
docker_image.image_id: Refreshing state... [id=sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5ghost:latest]
------------------------------------------------------------------------
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
+ create
Terraform will perform the following actions:
# docker_container.container_id will be created
+ resource "docker_container" "container_id" {
+ attach = false
+ bridge = (known after apply)
+ command = (known after apply)
+ container_logs = (known after apply)
+ dns = (known after apply)
+ dns_opts = (known after apply)
+ entrypoint = (known after apply)
+ exit_code = (known after apply)
+ gateway = (known after apply)
+ hostname = (known after apply)
+ id = (known after apply)
+ image = "sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5"
+ ip_address = (known after apply)
+ ip_prefix_length = (known after apply)
+ ipc_mode = (known after apply)
+ log_driver = (known after apply)
+ log_opts = (known after apply)
+ logs = false
+ must_run = true
+ name = "blog"
+ network_data = (known after apply)
+ read_only = false
+ restart = "no"
+ rm = false
+ shm_size = (known after apply)
+ start = true
+ user = (known after apply)
+ working_dir = (known after apply)
+ ports {
+ external = 80
+ internal = 2368
+ ip = "0.0.0.0"
+ protocol = "tcp"
}
}
Plan: 1 to add, 0 to change, 0 to destroy.
Warning: Interpolation-only expressions are deprecated
on main.tf line 21, in resource "docker_container" "container_id":
21: image = "${docker_image.image_id.latest}"
Terraform 0.11 and earlier required all non-constant expressions to be
provided via interpolation syntax, but this pattern is now deprecated. To
silence this warning, remove the "${ sequence from the start and the }"
sequence from the end of this expression, leaving just the inner expression.
Template interpolation syntax is still used to construct strings from
expressions when the template includes multiple interpolation sequences or a
mixture of literal strings and interpolations. This deprecation applies only
to templates that consist entirely of a single interpolation sequence.
------------------------------------------------------------------------
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.
~/docker# terraform apply
docker_image.image_id: Refreshing state... [id=sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5ghost:latest]
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
+ create
Terraform will perform the following actions:
# docker_container.container_id will be created
+ resource "docker_container" "container_id" {
+ attach = false
+ bridge = (known after apply)
+ command = (known after apply)
+ container_logs = (known after apply)
+ dns = (known after apply)
+ dns_opts = (known after apply)
+ entrypoint = (known after apply)
+ exit_code = (known after apply)
+ gateway = (known after apply)
+ hostname = (known after apply)
+ id = (known after apply)
+ image = "sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5"
+ ip_address = (known after apply)
+ ip_prefix_length = (known after apply)
+ ipc_mode = (known after apply)
+ log_driver = (known after apply)
+ log_opts = (known after apply)
+ logs = false
+ must_run = true
+ name = "blog"
+ network_data = (known after apply)
+ read_only = false
+ restart = "no"
+ rm = false
+ shm_size = (known after apply)
+ start = true
+ user = (known after apply)
+ working_dir = (known after apply)
+ ports {
+ external = 80
+ internal = 2368
+ ip = "0.0.0.0"
+ protocol = "tcp"
}
}
Plan: 1 to add, 0 to change, 0 to destroy.
Warning: Interpolation-only expressions are deprecated
on main.tf line 21, in resource "docker_container" "container_id":
21: image = "${docker_image.image_id.latest}"
Terraform 0.11 and earlier required all non-constant expressions to be
provided via interpolation syntax, but this pattern is now deprecated. To
silence this warning, remove the "${ sequence from the start and the }"
sequence from the end of this expression, leaving just the inner expression.
Template interpolation syntax is still used to construct strings from
expressions when the template includes multiple interpolation sequences or a
mixture of literal strings and interpolations. This deprecation applies only
to templates that consist entirely of a single interpolation sequence.
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
docker_container.container_id: Creating...
docker_container.container_id: Creation complete after 2s [id=667a876aa33df4aca874bc65747c8ac56b1b2a945aa0badd331609be847850cb]
Apply complete! Resources: 1 added, 0 changed, 0 destroyed.
~/docker# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 667a876aa33d 98c65d66926b "docker-entrypoint.s…" 39 seconds ago Up 37 seconds 0.0.0.0:80->2368/tcp blog
Access web page using the IP address of the hosting server
http://[PublicIP]/
Destroy the Terraform-managed infrastructure.
~/docker# terraform destroy
docker_image.image_id: Refreshing state... [id=sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5ghost:latest]
docker_container.container_id: Refreshing state... [id=667a876aa33df4aca874bc65747c8ac56b1b2a945aa0badd331609be847850cb]
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
- destroy
Terraform will perform the following actions:
# docker_container.container_id will be destroyed
- resource "docker_container" "container_id" {
- attach = false -> null
- command = [
- "node",
- "current/index.js",
] -> null
- cpu_shares = 0 -> null
- dns = [] -> null
- dns_opts = [] -> null
- dns_search = [] -> null
- entrypoint = [
- "docker-entrypoint.sh",
] -> null
- gateway = "172.17.0.1" -> null
- group_add = [] -> null
- hostname = "667a876aa33d" -> null
- id = "667a876aa33df4aca874bc65747c8ac56b1b2a945aa0badd331609be847850cb" -> null
- image = "sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5" -> null
- ip_address = "172.17.0.2" -> null
- ip_prefix_length = 16 -> null
- ipc_mode = "private" -> null
- links = [] -> null
- log_driver = "json-file" -> null
- log_opts = {} -> null
- logs = false -> null
- max_retry_count = 0 -> null
- memory = 0 -> null
- memory_swap = 0 -> null
- must_run = true -> null
- name = "blog" -> null
- network_data = [
- {
- gateway = "172.17.0.1"
- ip_address = "172.17.0.2"
- ip_prefix_length = 16
- network_name = "bridge"
},
] -> null
- network_mode = "default" -> null
- privileged = false -> null
- publish_all_ports = false -> null
- read_only = false -> null
- restart = "no" -> null
- rm = false -> null
- shm_size = 64 -> null
- start = true -> null
- sysctls = {} -> null
- tmpfs = {} -> null
- working_dir = "/var/lib/ghost" -> null
- ports {
- external = 80 -> null
- internal = 2368 -> null
- ip = "0.0.0.0" -> null
- protocol = "tcp" -> null
}
}
# docker_image.image_id will be destroyed
- resource "docker_image" "image_id" {
- id = "sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5ghost:latest" -> null
- latest = "sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5" -> null
- name = "ghost:latest" -> null
}
Plan: 0 to add, 0 to change, 2 to destroy.
Warning: Interpolation-only expressions are deprecated
on main.tf line 21, in resource "docker_container" "container_id":
21: image = "${docker_image.image_id.latest}"
Terraform 0.11 and earlier required all non-constant expressions to be
provided via interpolation syntax, but this pattern is now deprecated. To
silence this warning, remove the "${ sequence from the start and the }"
sequence from the end of this expression, leaving just the inner expression.
Template interpolation syntax is still used to construct strings from
expressions when the template includes multiple interpolation sequences or a
mixture of literal strings and interpolations. This deprecation applies only
to templates that consist entirely of a single interpolation sequence.
Do you really want to destroy all resources?
Terraform will destroy all your managed infrastructure, as shown above.
There is no undo. Only 'yes' will be accepted to confirm.
Enter a value: yes
docker_container.container_id: Destroying... [id=667a876aa33df4aca874bc65747c8ac56b1b2a945aa0badd331609be847850cb]
docker_container.container_id: Destruction complete after 1s
docker_image.image_id: Destroying... [id=sha256:98c65d66926b2da9fbb696d43aadfaf3fee847b7185e132e199532bc549aeba5ghost:latest]
docker_image.image_id: Destruction complete after 7s
Destroy complete! Resources: 2 destroyed.
~/docker# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
~/docker# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
References
Command: destroy