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Introduce terraform #189

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2 changes: 2 additions & 0 deletions platform/terraform/00_init/README.md
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# Configure OCI

13 changes: 13 additions & 0 deletions platform/terraform/00_init/keygen.sh
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# https://docs.oracle.com/en-us/iaas/developer-tutorials/tutorials/tf-provider/01-summary.htm
mkdir $HOME/.oci
chmod 700 $HOME/.oci
openssl genrsa -out $HOME/.oci/steve_private.pem 2048
chmod 600 $HOME/.oci/steve_private.pem
openssl rsa -pubout -in $HOME/.oci/steve_private.pem -out $HOME/.oci/steve_public.pem
cat $HOME/.oci/steve_public.pem

# Configure OCI cloud
oci setup config

# manually copy config variables to 01_kubernetes/terraform.tfvars
echo configure 01_kubernetes/terraform.tfvars
27 changes: 27 additions & 0 deletions platform/terraform/01_compartment/README.md
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# Using compartments

Compartments are the fundamental IAM feature used by Oracle Cloud to isolate cloud resources. Compartments
can have children in a tree structure, or be simpler with a depth of one. We use the `engineering` compartment
to house all engineering work.

Anything in production is housed in `production`.

During development, compartments are an awesome way to start over. Simply delete the compartment you were working
in, and all resources within the compartment are deleted.

# Create a compartmnet

This will create a compartment for you within the `engineering`.

```console
parent_compartment=$(oci iam compartment list --query 'data[?name==`"engineering"`].{compartment_id: "id"}' --output json | jq -r '.[0].compartment_id')
oci iam compartment create --name $(whoami)-$(date +%Y%m%d) --description "development compartment" --compartment-id ${parent_compartment}
```

# Delete a compartment

Replace the OCID with the compartment id you wish to delete. Never delete `engineering`.

```console
oci iam compartment delete --compartment-id ocid1.compartment.oc1..aaaaaaaayh4wcewcyj4ns3no4eu6eyfwj3ncaexs73mz2c35cfdwv4xfeejq
```
33 changes: 33 additions & 0 deletions platform/terraform/02_kubernetes/README.md
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# Deploy and use Kubernetes

Initialize terraform:

```
terraform init
```

Create a Kubernetes deployment:

```
terraform apply
```

Destroy the Kubernetes deployment:

```
terraform destroy
```

When you create the Kubernetes deployment, an `ocid.cluster....` is printed.

Set the OCID cluster enviornment variable:
```
CLUSTER_OCID="value from terraform apply"
```

Setup `kubectl` via `$HOME/.kube/config`

```
oci ce cluster create-kubeconfig --cluster-id "${CLUSTER_OCID}" --file $HOME/.kube/config --region us-phoenix-1 --token-version 2.0.0 --kube-endpoint PUBLIC_ENDPOINT
```
70 changes: 70 additions & 0 deletions platform/terraform/02_kubernetes/locals.tf
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locals {

###
#
# Networking Configuration

cni_type = "flannel"
kubeproxy_mode = "iptables"
create_drg = true


###
#
# Kubernetes Control Plane Configuration

create_cluster = true
cluster_type = "basic"
oke_control_plane = "public"
control_plane_allowed_cidrs = ["0.0.0.0/0"]
control_plane_is_public = true
assign_public_ip_to_control_plane = true
create_iam_resources = true


###
#
# Kubernetes Worker Nodes Configuration

worker_image_type = "oke"
worker_pool_mode = "node-pool"
allow_worker_ssh_access = false
worker_pools = {
np1 = {
create = true,
size = var.worker_nodes,
shape = "VM.Standard.E4.Flex",
ocpus = var.worker_cpu,
memory = var.worker_memory,
}
}

worker_cloud_init = [
{
content = <<-EOT
runcmd:
- 'echo "Kernel module configuration for Istio and worker node initialization"'
- 'modprobe br_netfilter'
- 'modprobe nf_nat'
- 'modprobe xt_REDIRECT'
- 'modprobe xt_owner'
- 'modprobe iptable_nat'
- 'modprobe iptable_mangle'
- 'modprobe iptable_filter'
- '/usr/libexec/oci-growfs -y'
- 'timedatectl set-timezone Australia/Sydney'
- 'curl --fail -H "Authorization: Bearer Oracle" -L0 http://169.254.169.254/opc/v2/instance/metadata/oke_init_script | base64 --decode >/var/run/oke-init.sh'
- 'bash -x /var/run/oke-init.sh'
EOT
content_type = "text/cloud-config",
}
]

###
#
# Extras

create_bastion = false
create_service_account = true
create_operator = false
}
53 changes: 53 additions & 0 deletions platform/terraform/02_kubernetes/main.tf
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module "kubernetes" {
source = "git::https://github.com/oracle-terraform-modules/terraform-oci-oke"
providers = {
oci.home = oci
}

api_fingerprint = var.api_fingerprint
api_private_key_path = var.api_private_key_path
tenancy_id = var.tenancy_id
compartment_id = var.compartment_id
user_id = var.user_id
region = var.region
kubernetes_version = var.kubernetes_version
pods_cidr = var.pods_cidr
services_cidr = var.services_cidr

###
#
# Networking Configuration

cni_type = local.cni_type
kubeproxy_mode = local.kubeproxy_mode
create_drg = local.create_drg


###
#
# Kubernetes Control Plane Configuration

create_cluster = local.create_cluster
cluster_type = local.cluster_type
control_plane_allowed_cidrs = local.control_plane_allowed_cidrs
control_plane_is_public = local.control_plane_is_public
assign_public_ip_to_control_plane = local.assign_public_ip_to_control_plane
#create_iam_resources = local.create_iam_resources

###
#
# Kubernetes Worker Nodes Configuration

create_iam_resources = local.create_iam_resources
worker_pool_mode = local.worker_pool_mode
allow_worker_ssh_access = local.allow_worker_ssh_access
worker_pools = local.worker_pools
worker_cloud_init = local.worker_cloud_init

###
#
# Extra nodes

create_bastion = local.create_bastion
create_operator = local.create_operator
}
3 changes: 3 additions & 0 deletions platform/terraform/02_kubernetes/outputs.tf
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output "cluster_ocid" {
value = module.kubernetes.cluster_id
}
13 changes: 13 additions & 0 deletions platform/terraform/02_kubernetes/providers.tf
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# Copyright (c) 2024 Oracle Corporation and/or its affiliates.
# Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl

provider "oci" {
fingerprint = var.api_fingerprint
private_key_path = var.api_private_key_path
region = var.region
compartment_ocid = var.compartment_id
tenancy_ocid = var.tenancy_id
user_ocid = var.user_id
alias = "home"
ignore_defined_tags = ["Oracle-Tags.CreatedBy", "Oracle-Tags.CreatedOn"]
}
28 changes: 28 additions & 0 deletions platform/terraform/02_kubernetes/terraform.tfvars
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###
#
# Authentication

api_fingerprint = "c6:1d:a5:54:c2:d2:67:26:6a:81:b8:e0:d2:f5:f7:a7"
api_private_key_path = "/hoem/sdake/.oci/oci_api_key.pem"


###
#
# Identity Management

tenancy_id = "ocid1.tenancy.oc1..aaaaaaaa6vyjrctvv5ax3lzuah3ldtlnrvni6hxcqdzcfoxjw5stgu4vz32q"
compartment_id = "ocid1.compartment.oc1..aaaaaaaaq6xqdldlmtkmkpypkhsjymplonmuvbfpdqfii7ezu6b23utwqtba"
user_id = "ocid1.user.oc1..aaaaaaaa64i4tqgymgevje33u6tx7ejxgh2dipggg42lwikdr4f2ouwids5a"


###
#
# Kubernetes Configuration

region = "us-phoenix-1"
kubernetes_version = "v1.30.1"
worker_nodes = 3
worker_cpu = 2
worker_memory = 16
pods_cidr = "10.201.0.0/16"
services_cidr = "10.101.0.0/16"
84 changes: 84 additions & 0 deletions platform/terraform/02_kubernetes/variables.tf
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###
#
# Authentication

variable "api_fingerprint" {
description = "Fingerprint of the API private key to use with OCI API."
type = string
}

variable "api_private_key_path" {
description = "The path to the OCI API private key pem file."
type = string
}


###
#
# Identity Management

variable "user_id" {
description = "The id of the user that Terraform will use to create the resources."
type = string
}
variable "tenancy_id" {
description = "The tenancy id of the OCI Cloud Account in which to create the resources."
type = string
}

variable "compartment_id" {
description = "The compartment id where to create all resources."
type = string
}


###
#
# Cluster Networking Configuration

# It would be cool to enhance this such that an array of clusters could be created.

variable "pods_cidr" {
description = "Network CIDR associated with PODs. Must be a /16 that does not overlap with other networks."
type = string
}

variable "services_cidr" {
description = "Services CIDR associated with Services. Must be a /16 tha does not overlap with other networks."
type = string
}


###
#
# Kubernetes Control Plane Configuration
# It would be cool to enhance this such that an array of clusters could be created.

variable "region" {
description = "Create Kubernetes in this region."
type = string
}

variable "kubernetes_version" {
default = "v1.30.1"
description = "Create Kubernetes using this version."
type = string
}

variable "worker_nodes" {
default = "3"
description = "Create Kubernetes with this worker node count."
type = number
}

variable "worker_memory" {
default = "16"
description = "Create each worker with this much memory in gigabytes."
type = number
}

variable "worker_cpu" {
default = "4"
description = "Create each worker with this many virtual CPUs."
type = number
}
8 changes: 8 additions & 0 deletions platform/terraform/02_kubernetes/versions.tf
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terraform {
required_providers {
oci = {
source = "oracle/oci"
}
}
required_version = ">= 1.0.0"
}
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