40 lines
1.4 KiB
Markdown
40 lines
1.4 KiB
Markdown
|
# Basic Two-Tier Architecture in Google Cloud
|
||
|
|
|
||
|
|
This provides a template for running a simple two-tier architecture on Google Cloud.
|
||
|
|
The premise is that you have stateless app servers running behind
|
||
|
|
a load balancer serving traffic.
|
||
|
|
|
||
|
|
To simplify the example, this intentionally ignores deploying and
|
||
|
|
getting your application onto the servers. However, you could do so either via
|
||
|
|
[startup script](http://terraform.io/docs/providers/google/r/compute_instance.html#metadata_startup_script) or
|
||
|
|
[provisioners](https://www.terraform.io/docs/provisioners/) and a configuration
|
||
|
|
management tool, or by pre-baking configured images with
|
||
|
|
[Packer](https://packer.io/docs/builders/googlecompute.html).
|
||
|
|
|
||
|
|
After you run `terraform apply` on this configuration, it will
|
||
|
|
automatically output the public IP address of the load balancer.
|
||
|
|
After your instance registers, the LB should respond with a simple header:
|
||
|
|
|
||
|
|
```html
|
||
|
|
<h1>Welcome to instance 0</h1>
|
||
|
|
```
|
||
|
|
|
||
|
|
The index may differ once you increase `count` of `google_compute_instance`
|
||
|
|
(i.e. provision more instances).
|
||
|
|
|
||
|
|
To run, configure your Google Cloud provider as described in
|
||
|
|
|
||
|
|
https://www.terraform.io/docs/providers/google/index.html
|
||
|
|
|
||
|
|
Run with a command like this:
|
||
|
|
|
||
|
|
```
|
||
|
|
terraform apply \
|
||
|
|
-var="region=us-central1" \
|
||
|
|
-var="region_zone=us-central1-f" \
|
||
|
|
-var="project_name=my-project-id-123" \
|
||
|
|
-var="account_file_path=~/.gcloud/Terraform.json" \
|
||
|
|
-var="public_key_path=~/.ssh/gcloud_id_rsa.pub" \
|
||
|
|
-var="private_key_path=~/.ssh/gcloud_id_rsa"
|
||
|
|
```
|