From c189261438bd89d51fa9b72f96e0c5270bf17abd Mon Sep 17 00:00:00 2001 From: ibraheemalsaady Date: Fri, 9 Jul 2021 10:21:12 +0200 Subject: [PATCH] initial push --- .gitignore | 25 ++ LICENSE | 674 ++++++++++++++++++++++++++++++++++++++ README.md | 12 + TERRAFORM.md | 59 ++++ argo.tf | 89 +++++ docs/CONTRIBUTING.md | 72 ++++ main.tf | 34 ++ output.tf | 18 + provider.tf | 8 + sealed-secrets.tf | 77 +++++ templates/git-config.tmpl | 7 + variables.tf | 102 ++++++ vars/default.tfvars | 48 +++ 13 files changed, 1225 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 TERRAFORM.md create mode 100644 argo.tf create mode 100644 docs/CONTRIBUTING.md create mode 100644 main.tf create mode 100644 output.tf create mode 100644 provider.tf create mode 100644 sealed-secrets.tf create mode 100644 templates/git-config.tmpl create mode 100644 variables.tf create mode 100644 vars/default.tfvars diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6fa7679 --- /dev/null +++ b/.gitignore @@ -0,0 +1,25 @@ +bin/* +**/*.tfstate* +**/*.tfstate.backup +**/.terraform/* +**/.terraform.lock.* +**/*.test.tfvars + +.DS_Store +builds/* +crash.log +.idea +*.iml +*.exe +*.ovpn +debug.test +linux-amd64/* +temp/* +.env +kubeconfig_* + +**/config/generated/* +**/config/demo.yaml +**/config/lab.yaml + +known_hosts \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..61d1860 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ +GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..e6c8c24 --- /dev/null +++ b/README.md @@ -0,0 +1,12 @@ +# Terraform K8s ArgoCD Bootstrap +A terraform module that will bootstrap a Kubernetes cluster with ArgoCD and Sealed Secrets. + +## Usage +Below are few examples on how to use this module + + +## Module Info +See the module info here [here](./TERRAFORM.md) + +## Contributing +See contributing docs [here](./docs/CONTRIBUTING.md) \ No newline at end of file diff --git a/TERRAFORM.md b/TERRAFORM.md new file mode 100644 index 0000000..6acd86b --- /dev/null +++ b/TERRAFORM.md @@ -0,0 +1,59 @@ +## Requirements + +| Name | Version | +|------|---------| +| kubernetes | >= 1.13.3 | + +## Providers + +| Name | Version | +|------|---------| +| aws | n/a | +| helm | n/a | +| kubernetes | >= 1.13.3 | +| template | n/a | +| tls | n/a | + +## Modules + +No Modules. + +## Resources + +| Name | +|------| +| [aws_eks_cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster) | +| [aws_eks_cluster_auth](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster_auth) | +| [helm_release](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release) | +| [kubernetes_namespace](https://registry.terraform.io/providers/hashicorp/kubernetes/latest/docs/resources/namespace) | +| [kubernetes_secret](https://registry.terraform.io/providers/hashicorp/kubernetes/latest/docs/resources/secret) | +| [template_file](https://registry.terraform.io/providers/hashicorp/template/latest/docs/data-sources/file) | +| [tls_private_key](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/private_key) | +| [tls_self_signed_cert](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/self_signed_cert) | + +## Inputs + +| Name | Description | Type | Default | Required | +|------|-------------|------|---------|:--------:| +| argocd\_git\_repo\_url | The ArgoCD git config | `string` | n/a | yes | +| target\_cluster\_name | The cluster name where the ArgoCD will be installed | `string` | n/a | yes | +| argocd\_additional\_applications | Additional applications to be added to ArgoCD | `list(any)` | `[]` | no | +| argocd\_additional\_projects | Additional projeccts to be added to ArgoCD | `list(any)` | `[]` | no | +| argocd\_chart\_version | The ArgoCD chart version | `string` | `"3.7.1"` | no | +| argocd\_image\_tag | The image tag for the ArgoCD image | `string` | `"v2.0.4"` | no | +| managed\_clusters\_names | A list of clusters that will be managed by ArgoCD | `list(string)` | `[]` | no | +| namespace | The namespace name that will be created for argo and sealed secret | `string` | `"argo-system"` | no | +| namespace\_labels | labels to be added to the namespace | `map(string)` | `{}` | no | +| sealed\_secrets\_chart | The chart version and docker image version. | 
object({
    repository : string
    chart_version : string
    docker_image_tag : string
  })
| 
{
  "chart_version": "1.16.1",
  "docker_image_tag": "v0.16.0",
  "repository": "https://bitnami-labs.github.io/sealed-secrets"
}
| no | +| sealed\_secrets\_chart\_values | A list of values.yaml files to be added to the chart installation. | `list(string)` | `[]` | no | +| sealed\_secrets\_chart\_values\_overrides | A map of key/value to override the chart values. The key must be the path/name of the chart value, e.g: `path.to.chart.key` | `map(string)` | `{}` | no | +| sealed\_secrets\_key\_cert | The key/cert config for sealed secrets. If `auto_generate_key_cert` is false and no custom key/cert is provided, no custom key/cert will be generated | 
object({
    auto_generate_key_cert : bool,
    private_key : string
    private_cert : string
  })
| 
{
  "auto_generate_key_cert": true,
  "private_cert": "",
  "private_key": ""
}
| no | + +## Outputs + +| Name | Description | +|------|-------------| +| argocd\_git\_private\_key | n/a | +| argocd\_git\_public\_key | n/a | +| sealed\_secrets\_generated\_cert | n/a | +| sealed\_secrets\_generated\_private\_key | n/a | diff --git a/argo.tf b/argo.tf new file mode 100644 index 0000000..a94c608 --- /dev/null +++ b/argo.tf @@ -0,0 +1,89 @@ +locals { + cluster_credentials = { + configs = { + clusterCredentials = [ + for c in var.managed_clusters_names : { + name = c + server = data.aws_eks_cluster.creds[c].endpoint + namespaces = "default,argo-system" + config = { + bearerToken = data.aws_eks_cluster_auth.creds[c].token + tlsClientConfig = { + insecure = false + caData = data.aws_eks_cluster.creds[c].certificate_authority.0.data + } + } + } + ] + } + } + + argocd_config = { + server = { + additionalApplications = var.argocd_additional_applications + additionalProjects = var.argocd_additional_projects + } + } + + gitSSHSecretKey = "sshPrivateKey" +} + +data "aws_eks_cluster" "creds" { + for_each = toset(var.managed_clusters_names) + + name = each.value +} + +data "aws_eks_cluster_auth" "creds" { + for_each = toset(var.managed_clusters_names) + + name = each.value +} + +data "template_file" "git" { + template = file("${path.module}/templates/git-config.tmpl") + vars = { + GIT_URL = var.argocd_git_repo_url + SECRET_NAME = kubernetes_secret.git.metadata.0.name + SECRET_KEY = local.gitSSHSecretKey + } +} + +resource "tls_private_key" "git" { + algorithm = "RSA" + rsa_bits = "4096" +} + +resource "kubernetes_secret" "git" { + metadata { + name = "argocd-git-ssh-credentials" + namespace = kubernetes_namespace.argo.metadata.0.name + labels = {} + } + + data = { + "${local.gitSSHSecretKey}" = tls_private_key.git.private_key_pem + } + + type = "Opaque" +} + +resource "helm_release" "argo" { + name = "argo-cd" + namespace = kubernetes_namespace.argo.metadata.0.name + + repository = "https://argoproj.github.io/argo-helm" + chart = "argo-cd" + version = var.argocd_chart_version + + values = [ + yamlencode(local.cluster_credentials), + yamlencode(local.argocd_config), + data.template_file.git.rendered + ] + + set { + name = "global.image.tag" + value = var.argocd_image_tag + } +} \ No newline at end of file diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md new file mode 100644 index 0000000..2c957ff --- /dev/null +++ b/docs/CONTRIBUTING.md @@ -0,0 +1,72 @@ +# Contributing +This project accepts contributions via GitHub pull requests. This document outlines the process to help get your contribution accepted + +## Sign Your Work + +The sign-off is a simple line at the end of the explanation for a commit. All +commits needs to be signed. Your signature certifies that you wrote the patch or +otherwise have the right to contribute the material. The rules are pretty simple, +if you can certify the below (from [developercertificate.org](http://developercertificate.org/)): + +``` +Developer Certificate of Origin +Version 1.1 + +Copyright (C) 2004, 2006 The Linux Foundation and its contributors. +1 Letterman Drive +Suite D4700 +San Francisco, CA, 94129 + +Everyone is permitted to copy and distribute verbatim copies of this +license document, but changing it is not allowed. + +Developer's Certificate of Origin 1.1 + +By making a contribution to this project, I certify that: + +(a) The contribution was created in whole or in part by me and I + have the right to submit it under the open source license + indicated in the file; or + +(b) The contribution is based upon previous work that, to the best + of my knowledge, is covered under an appropriate open source + license and I have the right under that license to submit that + work with modifications, whether created in whole or in part + by me, under the same open source license (unless I am + permitted to submit under a different license), as indicated + in the file; or + +(c) The contribution was provided directly to me by some other + person who certified (a), (b) or (c) and I have not modified + it. + +(d) I understand and agree that this project and the contribution + are public and that a record of the contribution (including all + personal information I submit with it, including my sign-off) is + maintained indefinitely and may be redistributed consistent with + this project or the open source license(s) involved. +``` + +Then you just add a line to every git commit message: + + Signed-off-by: Joe Smith + +Use your real name (sorry, no pseudonyms or anonymous contributions.) + +If you set your `user.name` and `user.email` git configs, you can sign your +commit automatically with `git commit -s`. + +Note: If your git config information is set properly then viewing the + `git log` information for your commit will look something like this: + +``` +Author: Joe Smith +Date: Thu Feb 2 11:41:15 2018 -0800 + + Update README + + Signed-off-by: Joe Smith +``` + +Notice the `Author` and `Signed-off-by` lines match. If they don't +your PR will be rejected by the automated DCO check. \ No newline at end of file diff --git a/main.tf b/main.tf new file mode 100644 index 0000000..d224fbe --- /dev/null +++ b/main.tf @@ -0,0 +1,34 @@ +data "aws_eks_cluster" "target" { + name = var.target_cluster_name +} + +data "aws_eks_cluster_auth" "target" { + name = var.target_cluster_name +} + +provider "helm" { + kubernetes { + host = data.aws_eks_cluster.target.endpoint + cluster_ca_certificate = base64decode(data.aws_eks_cluster.target.certificate_authority.0.data) + token = data.aws_eks_cluster_auth.target.token + } +} + +provider "kubernetes" { + host = data.aws_eks_cluster.target.endpoint + cluster_ca_certificate = base64decode(data.aws_eks_cluster.target.certificate_authority.0.data) + token = data.aws_eks_cluster_auth.target.token +} + +resource "kubernetes_namespace" "argo" { + metadata { + name = var.namespace + labels = var.namespace_labels + } + + lifecycle { + ignore_changes = [ + metadata[0].labels, + ] + } +} diff --git a/output.tf b/output.tf new file mode 100644 index 0000000..5c05d8a --- /dev/null +++ b/output.tf @@ -0,0 +1,18 @@ +output "argocd_git_public_key" { + value = tls_private_key.git.public_key_openssh +} + +output "argocd_git_private_key" { + sensitive = true + value = tls_private_key.git.private_key_pem +} + +output "sealed_secrets_generated_private_key" { + sensitive = true + value = var.sealed_secrets_key_cert.auto_generate_key_cert ? tls_private_key.sealed_secret_key.0.private_key_pem : "" +} + +output "sealed_secrets_generated_cert" { + sensitive = true + value = var.sealed_secrets_key_cert.auto_generate_key_cert ? tls_self_signed_cert.sealed_secret_cert.0.cert_pem : "" +} \ No newline at end of file diff --git a/provider.tf b/provider.tf new file mode 100644 index 0000000..78406b9 --- /dev/null +++ b/provider.tf @@ -0,0 +1,8 @@ +terraform { + required_providers { + kubernetes = { + source = "hashicorp/kubernetes" + version = ">= 1.13.3" + } + } +} \ No newline at end of file diff --git a/sealed-secrets.tf b/sealed-secrets.tf new file mode 100644 index 0000000..4a58d24 --- /dev/null +++ b/sealed-secrets.tf @@ -0,0 +1,77 @@ +resource "tls_private_key" "sealed_secret_key" { + count = var.sealed_secrets_key_cert.auto_generate_key_cert ? 1 : 0 + + algorithm = "RSA" + rsa_bits = "4096" +} + +resource "tls_self_signed_cert" "sealed_secret_cert" { + count = var.sealed_secrets_key_cert.auto_generate_key_cert ? 1 : 0 + + key_algorithm = "RSA" + private_key_pem = tls_private_key.sealed_secret_key.0.private_key_pem + + subject { + common_name = "sealed-secrets" + organization = "sealed-secrets" + } + + validity_period_hours = 12 + + allowed_uses = [ + "key_encipherment", + "data_encipherment", + "digital_signature", + "server_auth", + ] +} + +resource "kubernetes_secret" "sealed_secrets_key" { + depends_on = [kubernetes_namespace.argo] + count = var.sealed_secrets_key_cert.auto_generate_key_cert || (var.sealed_secrets_key_cert.private_key != "" && var.sealed_secrets_key_cert.private_cert != "") ? 1 : 0 + + metadata { + name = "sealed-secret-encryption-key" + namespace = var.namespace + labels = { + "sealedsecrets.bitnami.com/sealed-secrets-key" = "active" + } + } + + data = { + "tls.key" = var.sealed_secrets_key_cert.auto_generate_key_cert ? tls_private_key.sealed_secret_key.0.private_key_pem : var.sealed_secrets_key_cert.private_key + "tls.crt" = var.sealed_secrets_key_cert.auto_generate_key_cert ? tls_self_signed_cert.sealed_secret_cert.0.cert_pem : var.sealed_secrets_key_cert.private_cert + } + + type = "kubernetes.io/tls" +} + +resource "helm_release" "sealed_secrets" { + name = "sealed-secrets" + namespace = kubernetes_namespace.argo.metadata.0.name + + repository = var.sealed_secrets_chart.repository + chart = "sealed-secrets" + version = var.sealed_secrets_chart.chart_version + + values = var.sealed_secrets_chart_values + + set { + name = "image.repository" + value = "quay.io/bitnami/sealed-secrets-controller" + } + + set { + name = "image.tag" + value = var.sealed_secrets_chart.docker_image_tag + } + + dynamic "set" { + for_each = var.sealed_secrets_chart_values_overrides + + content { + name = set.key + value = set.value + } + } +} \ No newline at end of file diff --git a/templates/git-config.tmpl b/templates/git-config.tmpl new file mode 100644 index 0000000..3a80c8b --- /dev/null +++ b/templates/git-config.tmpl @@ -0,0 +1,7 @@ +server: + config: + repositories: | + - url: ${GIT_URL} + sshPrivateKeySecret: + name: ${SECRET_NAME} + key: ${SECRET_KEY} \ No newline at end of file diff --git a/variables.tf b/variables.tf new file mode 100644 index 0000000..d9253b9 --- /dev/null +++ b/variables.tf @@ -0,0 +1,102 @@ +variable "target_cluster_name" { + description = "The cluster name where the ArgoCD will be installed" + type = string +} + +variable "argocd_git_repo_url" { + description = "The ArgoCD git config" + type = string +} + +variable "managed_clusters_names" { + description = "A list of clusters that will be managed by ArgoCD" + type = list(string) + + default = [] +} + +variable "namespace" { + description = "The namespace name that will be created for argo and sealed secret" + type = string + + default = "argo-system" +} + +variable "namespace_labels" { + description = "labels to be added to the namespace" + type = map(string) + + default = {} +} + +variable "argocd_chart_version" { + description = "The ArgoCD chart version" + type = string + + default = "3.7.1" +} + +variable "argocd_image_tag" { + description = "The image tag for the ArgoCD image" + type = string + + default = "v2.0.4" +} + +variable "argocd_additional_applications" { + description = "Additional applications to be added to ArgoCD" + type = list(any) + + default = [] +} + +variable "argocd_additional_projects" { + description = "Additional projeccts to be added to ArgoCD" + type = list(any) + + default = [] +} + +variable "sealed_secrets_key_cert" { + description = "The key/cert config for sealed secrets. If `auto_generate_key_cert` is false and no custom key/cert is provided, no custom key/cert will be generated" + type = object({ + auto_generate_key_cert : bool, + private_key : string + private_cert : string + }) + + default = { + auto_generate_key_cert = true + private_key = "" + private_cert = "" + } +} + +variable "sealed_secrets_chart" { + description = "The chart version and docker image version." + type = object({ + repository : string + chart_version : string + docker_image_tag : string + }) + + default = { + repository = "https://bitnami-labs.github.io/sealed-secrets" + chart_version = "1.16.1" + docker_image_tag = "v0.16.0" + } +} + +variable "sealed_secrets_chart_values" { + description = "A list of values.yaml files to be added to the chart installation." + type = list(string) + + default = [] +} + +variable "sealed_secrets_chart_values_overrides" { + description = "A map of key/value to override the chart values. The key must be the path/name of the chart value, e.g: `path.to.chart.key`" + type = map(string) + + default = {} +} \ No newline at end of file diff --git a/vars/default.tfvars b/vars/default.tfvars new file mode 100644 index 0000000..f0ad65a --- /dev/null +++ b/vars/default.tfvars @@ -0,0 +1,48 @@ +target_cluster_name = "eks-dev-vp-ops" + +managed_clusters_names = ["eks-dev-vp-sanity-a"] + +argocd_git_repo_url = "git@github.com:reynencourt/vendor-pipeline-argocd.git" + +argocd_additional_applications = [{ + name = "root" + namespace = "argo-system" + project = "vendor-pipeline" + source = { + repoURL = "git@github.com:reynencourt/vendor-pipeline-argocd.git" + targetRevision = "master" + path = "root" + directory = { + recurse = false + } + } + destination = { + server = "https://kubernetes.default.svc" + namespace = "default" + } + syncPolicy = { + automated = { + prune = false + selfHeal = false + } + } +}] + +argocd_additional_projects = [{ + name = "vendor-pipeline" + description = "project to handle all vendor pipeline infrastructure" + namespace = "argo-system" + sourceRepos = ["*"] + destinations = [{ + namespace = "*" + server = "*" + }] + clusterResourceWhitelist = [{ + group = "*" + kind = "*" + }] + namespaceResourceWhitelist = [{ + group = "*" + kind = "*" + }] +}] \ No newline at end of file