added simple-template
This commit is contained in:
Aleksei Krugliak
parent
68bbb3ac1b
commit
a77c2a72f2
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@ -3,7 +3,11 @@ repos:
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rev: "v0.16.0"
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hooks:
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- id: terraform-docs-go
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args: ["markdown", "table", "--output-file", "README.md", "."]
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args: ["markdown", "table", "--output-file", "README.md", "./simple-template"]
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- id: terraform-docs-go
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args: ["markdown", "table", "--output-file", "README.md", "./private-cluster-module"]
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- id: terraform-docs-go
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args: ["markdown", "table", "--output-file", "README.md", "./bucket"]
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- repo: https://github.com/pre-commit/pre-commit-hooks
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rev: v4.4.0
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hooks:
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@ -1,55 +0,0 @@
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# This file is maintained automatically by "tofu init".
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# Manual edits may be lost in future updates.
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provider "registry.opentofu.org/hashicorp/google" {
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version = "5.27.0"
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constraints = "~> 5.27.0"
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hashes = [
|
||||
"h1:cMRlEcTObLOVpFx09v3osbNtKayr2IIJFuhsRPdfrT4=",
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||||
"zh:10dee695387df836c8f2a7e7f4609e3d3d910e8070cebf91bdd4e4449237191b",
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||||
"zh:260a2bf30a5e0cbbb2a331a74561886df3d380be26beeb1f50a3cab829208eed",
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"zh:2a87013cb2a408b2d494e2e7a938d2c6df7ed85156a6fe6be47a84390c3e3162",
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"zh:443aa9b0637de3e20ff901a5e2e431d82bac80067eca3256d8792b4d069a9018",
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||||
"zh:4eb358ad15b756993b36fa7ef70507b9ad3fefa7869ac6d483a83a9f8beaa5f7",
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||||
"zh:5e8657fca3376d3b8f57aaa2ebf0575974f0d3af7448ad456ceae8364322362b",
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||||
"zh:8bcf6fa7adcc375ffb293dc72ba4e1ee8ad39fbadf11d901bd413fa01de836c6",
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"zh:965d6df9bf7f0d85e0f61a9d7e5afdd389219e8b339ed241646ac292aedc839e",
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||||
"zh:c573e6c6e84691bf1c7736c238290441b2be40038972230dcaa7adc48b74b316",
|
||||
"zh:eac4f56c4f3ddaead0a55d3b2016391578fdf3dea060b2ed32ac80974cd46b1d",
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]
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}
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provider "registry.opentofu.org/hashicorp/helm" {
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version = "2.14.0"
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hashes = [
|
||||
"h1:K1yXsEeNhW/7YVSvsv55UaFSx4hHeKB1giPuQUKmFfQ=",
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||||
"zh:1c84ca8c274564c46497e89055139c7af64c9e1a8dd4f1cd4c68503ac1322fb8",
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"zh:211a763173934d30c2e49c0cc828b1e34a528b0fdec8bf48d2bb3afadd4f9095",
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||||
"zh:3dca0b703a2f82d3e283a9e9ca6259a3b9897b217201f3cddf430009a1ca00c9",
|
||||
"zh:40c5cfd48dcef54e87129e19d31c006c2e3309ee6c09d566139eaf315a59a369",
|
||||
"zh:6f23c00ca1e2663e2a208a7491aa6dbe2604f00e0af7e23ef9323206e8f2fc81",
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||||
"zh:77f8cfc4888600e0d12da137bbdb836de160db168dde7af26c2e44cf00cbf057",
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||||
"zh:97b99c945eafa9bafc57c3f628d496356ea30312c3df8dfac499e0f3ff6bf0c9",
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||||
"zh:a01cfc53e50d5f722dc2aabd26097a8e4d966d343ffd471034968c2dc7a8819d",
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||||
"zh:b69c51e921fe8c91e38f4a82118d0b6b0f47f6c71a76f506fde3642ecbf39911",
|
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"zh:fb8bfc7b8106bef58cc5628c024103f0dd5276d573fe67ac16f343a2b38ecee8",
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]
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}
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provider "registry.opentofu.org/hashicorp/kubernetes" {
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version = "2.29.0"
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constraints = "~> 2.29.0"
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hashes = [
|
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"h1:WcfXWA92IBkzQCGSv05Yb8Lped8kp7RRJEQIWG5nDTY=",
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"zh:2467de940f98ef5d3ed977a0f6b797962cd9ae6210ef706b8f6e6db23a0b3b99",
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"zh:480a2ccc9e1f3a444b6ebf836d87061002be00c54482be7180e090dddc47809e",
|
||||
"zh:4ce04ba31734813d6636b51b2346b8262253264033be2775d66e8298551c2dde",
|
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"zh:56b94fcd5ba65cae892fd64e831838369ae4615582c314eee73fa2e513689991",
|
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"zh:5a7e858dc3600e542182abcec9079e2f8741d1ba72114e87668ef64679e7191a",
|
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"zh:905b6eb78f19bd80b22c688af06130353977f77f313738c8e0cfc524e8550d4c",
|
||||
"zh:ccf5c3e7383d11785a735a0ce7751e4ff394b133aa5085857139eaec1d9a54c1",
|
||||
"zh:eb4e72d3abf937c283f702342eb1fc820b3dbfc743b1e24c84c3604c8fca1988",
|
||||
"zh:eea59cd51ef366269231cbfa5b77fc3b9fbebecfd6bca8dff27e5abd96188d92",
|
||||
"zh:f026a8b4fa2ca566c3d6cd9bfdd0dd58c0631e3d945b98a8ced0943aa27dd4bd",
|
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]
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}
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102
README.md
102
README.md
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@ -1,95 +1,19 @@
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# How to use repo
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# Terraform GKE clusters templates
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1. Create `terraform.tfvars` file with a few variables
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```shell
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project = "gcp-project"
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region = "europe-west1"
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environment_name = "demo"
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```
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Hello everyone! I'm glad to see you here.
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This is a repository with a few examples of GKE clusters that you can create in your own GCP project.
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Feel free to use this code in sandboxes for testing purposes.
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2. Create cluster
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All commands will be applied via Terraform 1.7.0 and via OpenTofu, the same version.
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Also, I'm adding links to this repository in my articles on [my Medium](https://medium.com/@ksemele) and other places.
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Here are OpenTofu commands.
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```shell
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tofu init
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tofu apply
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```
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## How to use this repo
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3. Get the credentials for the new cluster (configure kubeconfig)
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You can see a few directories in this repo:
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* [bucket](https://github.com/ksemele/tf-gke-test/tree/main/bucket) - terraform code for creating google bucket for storing remote state
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* [simple-template](https://github.com/ksemele/tf-gke-test/tree/main/simple-template) - Simple GKE example. Usually it's enough for any of my tests.
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* [private-cluster-module](https://github.com/ksemele/tf-gke-test/tree/main/private-cluster-module) - GKE created by `beta-private-cluster-update-variant` module. Creates GKE cluster with a private network.
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You can see all useful commands and links in the output:
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Each directory contains its own readme with all needed commands to reproduce the example.
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---
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```shell
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tofu output
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```
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There is a manual command:
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```shell
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gcloud container clusters get-credentials $(tofu output -raw kubernetes_cluster_name) --region $(tofu output -raw zone) --project $(tofu output -raw project)
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```
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Or just use `./get-credentials.sh`
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4. Destroy all resources
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```shell
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tofu destroy
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```
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<!-- BEGIN_TF_DOCS -->
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## Requirements
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| Name | Version |
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|------|---------|
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| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | ~>1.7.0 |
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| <a name="requirement_google"></a> [google](#requirement\_google) | ~>5.27.0 |
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| <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | ~>2.29.0 |
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## Providers
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| Name | Version |
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|------|---------|
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| <a name="provider_google"></a> [google](#provider\_google) | 5.27.0 |
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| <a name="provider_kubernetes"></a> [kubernetes](#provider\_kubernetes) | 2.29.0 |
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## Modules
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No modules.
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## Resources
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| Name | Type |
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|------|------|
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| [google_compute_network.vpc](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_network) | resource |
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| [google_compute_subnetwork.subnet](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_subnetwork) | resource |
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| [google_container_cluster.primary](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/container_cluster) | resource |
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| [google_container_node_pool.primary_nodes](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/container_node_pool) | resource |
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| [google_project_service.service_networking](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/project_service) | resource |
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| [kubernetes_namespace.demo-cluster](https://registry.terraform.io/providers/hashicorp/kubernetes/latest/docs/resources/namespace) | resource |
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| [google_client_config.primary](https://registry.terraform.io/providers/hashicorp/google/latest/docs/data-sources/client_config) | data source |
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## Inputs
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| Name | Description | Type | Default | Required |
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|------|-------------|------|---------|:--------:|
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| <a name="input_environment_name"></a> [environment\_name](#input\_environment\_name) | n/a | `string` | `"demo"` | no |
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| <a name="input_project"></a> [project](#input\_project) | Google Project to create resources in | `string` | `"demo"` | no |
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| <a name="input_region"></a> [region](#input\_region) | The region to host the cluster in | `string` | `"us-central1"` | no |
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| <a name="input_vpc_host_project"></a> [vpc\_host\_project](#input\_vpc\_host\_project) | Host Project where virtual network exists | `string` | `"demo"` | no |
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| <a name="input_zone"></a> [zone](#input\_zone) | The region to host the cluster in | `string` | `"us-central1-b"` | no |
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## Outputs
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| Name | Description |
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|------|-------------|
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| <a name="output_gcloud_gke_get_creds"></a> [gcloud\_gke\_get\_creds](#output\_gcloud\_gke\_get\_creds) | Command to get GKE credentials |
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| <a name="output_gcloud_gke_link"></a> [gcloud\_gke\_link](#output\_gcloud\_gke\_link) | GKE web ui link |
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| <a name="output_gcloud_vpc_link"></a> [gcloud\_vpc\_link](#output\_gcloud\_vpc\_link) | VPC web ui link |
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| <a name="output_kubernetes_cluster_host"></a> [kubernetes\_cluster\_host](#output\_kubernetes\_cluster\_host) | GKE Cluster Host |
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| <a name="output_kubernetes_cluster_name"></a> [kubernetes\_cluster\_name](#output\_kubernetes\_cluster\_name) | GKE Cluster Name |
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| <a name="output_project"></a> [project](#output\_project) | GCloud Project ID |
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| <a name="output_region"></a> [region](#output\_region) | GCloud Region |
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| <a name="output_zone"></a> [zone](#output\_zone) | GCloud Project ID |
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<!-- END_TF_DOCS -->
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❤️ I'm very thankful to [Altenar](https://altenar.com) who sponsored me in this project.
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@ -1,6 +0,0 @@
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resource "kubernetes_namespace" "demo-cluster" {
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metadata {
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name = "demo-cluster"
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}
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depends_on = [google_container_node_pool.primary_nodes]
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}
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@ -1,2 +0,0 @@
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#!/bin/bash
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gcloud container clusters get-credentials $(tofu output -raw kubernetes_cluster_name) --region $(tofu output -raw zone) --project $(tofu output -raw project)
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@ -0,0 +1,128 @@
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# simple-template
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## What is created ty thah template
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This example is using local state.
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You need an empty google project for tests.
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1. VPC network with one subnet
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2. GKE cluster with an external endpoint and services network (be careful with that!)
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3. Workload nodepool with one node
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3. Namespace `this-is-demo-cluster`
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## How to use the code
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1. Create a `terraform.tfvars` file with a few variables
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```shell
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project = "your-gcp-project"
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```
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`region`, `zone` and `environment_name` are optional
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2. Create the cluster
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All commands will be applied via Terraform 1.8.0 or via OpenTofu, the same version.
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I use alias `t` for the commands.
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```shell
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t init
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t apply
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```
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3. Get the credentials for the new cluster (configure kubeconfig)
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You can see all useful commands and links in the output:
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```shell
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t output
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```
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There is a manual command:
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```shell
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gcloud container clusters get-credentials $(t output -raw kubernetes_cluster_name) --zone $(t output -raw zone) --project $(t output -raw project)
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```
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Or just use `./get-credentials.sh`
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4. Destroy all resources
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```shell
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t destroy
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```
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## Additional info
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Some manual tests.
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### terraform
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✅ create cluster<br>
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✅ `./get-credentials.sh`<br>
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✅ manual cred command<br>
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✅ output `gcloud_gke_get_creds` command<br>
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✅ create simple nginx pod `kubectl run nginx --image=nginx:latest -n default && kubectl get po -w`<br>
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✅ `flux install && kubectl get po -n flux-system -w`<br>
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✅ destroy cluster
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### opentofu
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✅ create cluster<br>
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✅ `./get-credentials.sh`<br>
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✅ manual cred command<br>
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✅ output `gcloud_gke_get_creds` command<br>
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✅ create simple nginx pod `kubectl run nginx --image=nginx:latest -n default && kubectl get po -w`<br>
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✅ `flux install && kubectl get po -n flux-system -w`<br>
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✅ destroy cluster
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<!-- BEGIN_TF_DOCS -->
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## Requirements
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|
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| Name | Version |
|
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|------|---------|
|
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| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | ~>1.8.0 |
|
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| <a name="requirement_google"></a> [google](#requirement\_google) | ~>5.42.0 |
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| <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | ~>2.32.0 |
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## Providers
|
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|
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| Name | Version |
|
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|------|---------|
|
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| <a name="provider_google"></a> [google](#provider\_google) | 5.42.0 |
|
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| <a name="provider_kubernetes"></a> [kubernetes](#provider\_kubernetes) | 2.32.0 |
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## Modules
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No modules.
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## Resources
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|
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| Name | Type |
|
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|------|------|
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| [google_compute_network.vpc](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_network) | resource |
|
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| [google_compute_subnetwork.subnet](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_subnetwork) | resource |
|
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| [google_container_cluster.primary](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/container_cluster) | resource |
|
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| [google_container_node_pool.primary_nodes](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/container_node_pool) | resource |
|
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| [google_project_service.service_networking](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/project_service) | resource |
|
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| [kubernetes_namespace.this-is-demo-cluster](https://registry.terraform.io/providers/hashicorp/kubernetes/latest/docs/resources/namespace) | resource |
|
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| [google_client_config.primary](https://registry.terraform.io/providers/hashicorp/google/latest/docs/data-sources/client_config) | data source |
|
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|
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## Inputs
|
||||
|
||||
| Name | Description | Type | Default | Required |
|
||||
|------|-------------|------|---------|:--------:|
|
||||
| <a name="input_project"></a> [project](#input\_project) | Google Project to create resources in | `string` | `"demo"` | no |
|
||||
| <a name="input_region"></a> [region](#input\_region) | The region to host the cluster in | `string` | `"us-central1"` | no |
|
||||
| <a name="input_zone"></a> [zone](#input\_zone) | The region to host the cluster in | `string` | `"us-central1-b"` | no |
|
||||
|
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## Outputs
|
||||
|
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| Name | Description |
|
||||
|------|-------------|
|
||||
| <a name="output_gcloud_gke_get_creds"></a> [gcloud\_gke\_get\_creds](#output\_gcloud\_gke\_get\_creds) | Command to get GKE credentials |
|
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| <a name="output_gcloud_gke_link"></a> [gcloud\_gke\_link](#output\_gcloud\_gke\_link) | GKE web ui link |
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| <a name="output_gcloud_vpc_link"></a> [gcloud\_vpc\_link](#output\_gcloud\_vpc\_link) | VPC web ui link |
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| <a name="output_kubernetes_cluster_host"></a> [kubernetes\_cluster\_host](#output\_kubernetes\_cluster\_host) | GKE Cluster Host |
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| <a name="output_kubernetes_cluster_name"></a> [kubernetes\_cluster\_name](#output\_kubernetes\_cluster\_name) | GKE Cluster Name |
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| <a name="output_project"></a> [project](#output\_project) | GCloud Project ID |
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| <a name="output_region"></a> [region](#output\_region) | GCloud Region |
|
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| <a name="output_zone"></a> [zone](#output\_zone) | GCloud Project ID |
|
||||
<!-- END_TF_DOCS -->
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@ -0,0 +1,6 @@
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resource "kubernetes_namespace" "this-is-demo-cluster" {
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metadata {
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name = "this-is-demo-cluster"
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}
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depends_on = [google_container_node_pool.primary_nodes]
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}
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|
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@ -0,0 +1,9 @@
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#!/bin/bash
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||||
if grep -H "opentofu.org" .terraform.lock.hcl > /dev/null; then
|
||||
echo "trying to read tofu state"
|
||||
gcloud container clusters get-credentials $(tofu output -raw kubernetes_cluster_name) --zone $(tofu output -raw zone) --project $(tofu output -raw project)
|
||||
else
|
||||
echo "trying to read terraform state"
|
||||
gcloud container clusters get-credentials $(terraform output -raw kubernetes_cluster_name) --zone $(terraform output -raw zone) --project $(terraform output -raw project)
|
||||
fi
|
||||
|
|
@ -1,5 +1,9 @@
|
|||
locals {
|
||||
cluster_name = "${var.project}-gke"
|
||||
}
|
||||
|
||||
resource "google_container_cluster" "primary" {
|
||||
name = "${var.project}-gke"
|
||||
name = local.cluster_name
|
||||
location = var.zone
|
||||
|
||||
# We can't create a cluster with no node pool defined, but we want to only use
|
||||
|
|
@ -10,10 +14,16 @@ resource "google_container_cluster" "primary" {
|
|||
|
||||
network = google_compute_network.vpc.name
|
||||
subnetwork = google_compute_subnetwork.subnet.name
|
||||
deletion_protection = false # Use this only for study purposess
|
||||
depends_on = [google_compute_network.vpc, google_compute_subnetwork.subnet]
|
||||
deletion_protection = false # Use this only for testing purposess!
|
||||
depends_on = [
|
||||
google_compute_network.vpc,
|
||||
google_compute_subnetwork.subnet
|
||||
]
|
||||
}
|
||||
|
||||
# You can use only the default pool for your experiments, but in that confuguration
|
||||
# you have more flexibility. Even Prometheus or Flux doesn't run in the default node.
|
||||
# That's why I suppose to use a separate node pool.
|
||||
resource "google_container_node_pool" "primary_nodes" {
|
||||
name = google_container_cluster.primary.name
|
||||
location = var.zone
|
||||
|
|
@ -36,8 +46,8 @@ resource "google_container_node_pool" "primary_nodes" {
|
|||
preemptible = true
|
||||
machine_type = "n2-standard-8"
|
||||
tags = [
|
||||
"${var.environment_name}-k8s-${var.region}",
|
||||
"${var.environment_name}-k8s-${var.region}-nodes"
|
||||
"${local.cluster_name}-${var.region}",
|
||||
"${local.cluster_name}-${var.region}-nodes"
|
||||
]
|
||||
metadata = {
|
||||
disable-legacy-endpoints = "true"
|
||||
|
|
@ -20,12 +20,13 @@ output "kubernetes_cluster_name" {
|
|||
|
||||
output "kubernetes_cluster_host" {
|
||||
description = "GKE Cluster Host"
|
||||
sensitive = true
|
||||
value = google_container_cluster.primary.endpoint
|
||||
}
|
||||
|
||||
output "gcloud_gke_get_creds" {
|
||||
description = "Command to get GKE credentials"
|
||||
value = "gcloud container clusters get-credentials ${google_container_cluster.primary.name} --region ${google_container_cluster.primary.location} --project ${var.project}"
|
||||
value = "gcloud container clusters get-credentials ${google_container_cluster.primary.name} --zone ${google_container_cluster.primary.location} --project ${var.project}"
|
||||
}
|
||||
|
||||
output "gcloud_vpc_link" {
|
||||
|
|
@ -35,5 +36,5 @@ output "gcloud_vpc_link" {
|
|||
|
||||
output "gcloud_gke_link" {
|
||||
description = "GKE web ui link"
|
||||
value = "https://console.cloud.google.com/kubernetes/clusters/details/${var.region}/${var.project}-gke/details?project=${var.project}"
|
||||
value = "https://console.cloud.google.com/kubernetes/clusters/details/${var.region}/${local.cluster_name}/details?project=${var.project}"
|
||||
}
|
||||
|
|
@ -10,11 +10,3 @@ provider "kubernetes" {
|
|||
token = data.google_client_config.primary.access_token
|
||||
cluster_ca_certificate = base64decode(google_container_cluster.primary.master_auth.0.cluster_ca_certificate)
|
||||
}
|
||||
|
||||
provider "helm" {
|
||||
kubernetes {
|
||||
host = "https://${google_container_cluster.primary.endpoint}"
|
||||
token = data.google_client_config.primary.access_token
|
||||
cluster_ca_certificate = base64decode(google_container_cluster.primary.master_auth.0.cluster_ca_certificate)
|
||||
}
|
||||
}
|
||||
|
|
@ -1,20 +1,9 @@
|
|||
variable "project" {
|
||||
type = string
|
||||
description = "Google Project to create resources in"
|
||||
type = string
|
||||
default = "demo"
|
||||
}
|
||||
|
||||
variable "vpc_host_project" {
|
||||
description = "Host Project where virtual network exists"
|
||||
type = string
|
||||
default = "demo"
|
||||
}
|
||||
|
||||
variable "environment_name" {
|
||||
type = string
|
||||
default = "demo"
|
||||
}
|
||||
|
||||
variable "region" {
|
||||
type = string
|
||||
description = "The region to host the cluster in"
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
terraform {
|
||||
required_version = "~>1.8.0"
|
||||
|
||||
required_providers {
|
||||
# https://github.com/hashicorp/terraform-provider-google
|
||||
google = {
|
||||
source = "hashicorp/google"
|
||||
version = "~>5.42.0"
|
||||
}
|
||||
# https://github.com/hashicorp/terraform-provider-kubernetes
|
||||
kubernetes = {
|
||||
source = "hashicorp/kubernetes"
|
||||
version = "~>2.32.0"
|
||||
}
|
||||
}
|
||||
}
|
||||
14
versions.tf
14
versions.tf
|
|
@ -1,14 +0,0 @@
|
|||
terraform {
|
||||
required_version = "~>1.7.0"
|
||||
|
||||
required_providers {
|
||||
google = {
|
||||
source = "hashicorp/google" # https://github.com/hashicorp/terraform-provider-google
|
||||
version = "~>5.27.0"
|
||||
}
|
||||
kubernetes = {
|
||||
source = "hashicorp/kubernetes" # https://github.com/hashicorp/terraform-provider-kubernetes
|
||||
version = "~>2.29.0"
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue