From d61accfbdf7751f2be9f4d51288a9b447b3c6f9f Mon Sep 17 00:00:00 2001
From: illia <loofort@gmail.com>
Date: Sun, 16 Dec 2018 15:12:43 +0300
Subject: [PATCH] initial commit

---
 .gitignore           |   4 ++
 README.md            |   6 ++-
 aws-init/aws-init.tf |  49 ++++++++++++++++++
 connect.sh           |  15 ++++++
 docker-compose.yml   |  39 +++++++++++++++
 main.tf              | 115 +++++++++++++++++++++++++++++++++++++++++++
 meta.tf              |  19 +++++++
 terraform-init.sh    |  30 +++++++++++
 vpc/variables.tf     |  34 +++++++++++++
 vpc/vpc.tf           |  36 ++++++++++++++
 10 files changed, 346 insertions(+), 1 deletion(-)
 create mode 100644 .gitignore
 create mode 100644 aws-init/aws-init.tf
 create mode 100755 connect.sh
 create mode 100644 docker-compose.yml
 create mode 100644 main.tf
 create mode 100644 meta.tf
 create mode 100755 terraform-init.sh
 create mode 100644 vpc/variables.tf
 create mode 100644 vpc/vpc.tf

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bbca27b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+env.txt
+.terraform/*
+aws-init/terraform.tfstate
+key.pem
\ No newline at end of file
diff --git a/README.md b/README.md
index c5a93f1..358e638 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # terraform-aws-gitea
-terraform template for setup gitea in aws
+This terraform template creates AWS infrastructure for the Gitea source control service.
+
+1) The template uses remote-state-backend, so it need to initialize the s3 bucket firstly - just run terraform-init.sh
+2) Then apply terraform as usual - terraform apply
+3) Finally navigate to you created gitea service (see terraform output for for dns name). Or ssh to server - ./connect.sh
diff --git a/aws-init/aws-init.tf b/aws-init/aws-init.tf
new file mode 100644
index 0000000..ae365ff
--- /dev/null
+++ b/aws-init/aws-init.tf
@@ -0,0 +1,49 @@
+variable "name" {
+  description = "the name of infrastructure project"
+}
+variable "destroy" {
+  default = false
+}
+variable "tags" {
+  default     = {
+      Purpose = "terraform state storage"
+  }
+}
+
+# access_key, secret_key, region are provided by env varaibles
+provider "aws" {}
+
+resource "aws_s3_bucket" "bucket" {
+  tags   = "${var.tags}"
+  bucket = "${var.name}"
+  acl    = "private"
+  versioning {
+    enabled = true
+  }
+  lifecycle {
+    prevent_destroy = true
+ }
+  force_destroy = "${var.destroy}"
+}
+
+resource "aws_dynamodb_table" "table" {
+  tags         = "${var.tags}"
+  name         = "${var.name}"
+  billing_mode = "PAY_PER_REQUEST"
+  hash_key     = "LockID"
+  attribute {
+    name = "LockID"
+    type = "S"
+  }
+  lifecycle {
+    prevent_destroy = true
+  }
+}
+
+############## outputs #################
+output "bucket" {
+  value = "${aws_s3_bucket.bucket.bucket}"
+}
+output "table" {
+  value = "${aws_dynamodb_table.table.name}"
+}
\ No newline at end of file
diff --git a/connect.sh b/connect.sh
new file mode 100755
index 0000000..8b5efe9
--- /dev/null
+++ b/connect.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+#ip=$(terraform output -json | jq -r '.public_ip.value')
+#terraform output -json | jq -r '.private_key.value' > key.pem
+ip=$(terraform state show aws_instance.host | grep "public_ip " | sed 's/public_ip *= //')
+terraform state show tls_private_key.key | perl -ne 'BEGIN{undef $/;} /(-----BEGIN RSA PRIVATE.*?PRIVATE KEY-----)/s and print "$1"' > key.pem
+
+chmod 400 key.pem
+ssh -i key.pem -oStrictHostKeyChecking=no ec2-user@$ip
+rm -f key.pem
+
+# generate key manually 
+# ssh-keygen -t rsa -b 4096 -C "skarbdev@gmail.com" -f sshkey -q -N ""
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..dae5c2f
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,39 @@
+version: "2"
+
+networks:
+  gitea:
+    external: false
+
+services:
+  server:
+    image: gitea/gitea:latest
+    environment:
+      - USER_UID=1000
+      - USER_GID=1000
+      - DB_TYPE=postgres
+      - DB_HOST=db:5432
+      - DB_NAME=gitea
+      - DB_USER=gitea
+      - DB_PASSWD=gitea
+    restart: always
+    networks:
+      - gitea
+    volumes:
+      - ./gitea:/data
+    ports:
+      - "3000:3000"
+      - "222:22"
+    depends_on:
+      - db
+
+  db:
+    image: postgres:9.6
+    restart: always
+    environment:
+      - POSTGRES_USER=gitea
+      - POSTGRES_PASSWORD=gitea
+      - POSTGRES_DB=gitea
+    networks:
+      - gitea
+    volumes:
+      - ./postgres:/var/lib/postgresql/data
\ No newline at end of file
diff --git a/main.tf b/main.tf
new file mode 100644
index 0000000..7d2da49
--- /dev/null
+++ b/main.tf
@@ -0,0 +1,115 @@
+
+module "vpc" {
+  source = "./vpc"
+  
+  cidr = "10.0.0.0/16"
+  cidr_subnet = "10.0.1.0/24"
+  tags = "${var.tags}"
+}
+
+data "aws_ami" "al2" {
+  owners      = ["amazon"]
+  most_recent = true
+  name_regex  = "^amzn2-ami-hvm-2.0.\\d+-x86_64-gp2$",
+  filter {
+    name   = "name"
+    values = ["amzn2-ami-hvm-2.*"]
+  }
+}
+
+resource "tls_private_key" "key" {
+  algorithm   = "RSA"
+  ecdsa_curve = "4096"
+}
+resource "aws_key_pair" "key" {
+  public_key = "${tls_private_key.key.public_key_openssh}"
+}
+resource "aws_instance" "host" {
+  ami                    = "${data.aws_ami.al2.id}"
+  instance_type          = "t2.micro"
+  subnet_id              = "${module.vpc.subnet}"
+  key_name               = "${aws_key_pair.key.key_name}"
+  vpc_security_group_ids = ["${aws_security_group.web.id}"]
+  monitoring             = false # monitoring per 5 min for free (intead off 1 min payed)
+  #iam_instance_profile   = "${var.iam_instance_profile}"
+  user_data              = <<HEREDOC
+  #!/bin/bash
+  sudo yum update -y
+  sudo amazon-linux-extras install docker
+  sudo service docker start
+  sudo usermod -a -G docker ec2-user
+
+  sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+  sudo chmod +x /usr/local/bin/docker-compose
+HEREDOC
+
+  associate_public_ip_address = true
+  
+  volume_tags            = "${var.tags}"
+  tags                   = "${var.tags}"
+  #root_block_device      = "${var.root_block_device}"
+  #ebs_block_device       = "${var.ebs_block_device}"
+  #ephemeral_block_device = "${var.ephemeral_block_device}"
+
+  provisioner "remote-exec" {
+    inline = [
+      "cloud-init status --wait",
+      "mkdir ~/gitea",
+    ]
+  }
+  provisioner "file" {
+    source      = "docker-compose.yml"
+    destination = "~/gitea/docker-compose.yml"
+  }
+  provisioner "remote-exec" {
+    inline = [
+      "cd ~/gitea/",
+      "/usr/local/bin/docker-compose up -d",
+    ]
+  }
+
+  connection {
+    type        = "ssh"
+    user        = "ec2-user"
+    private_key = "${tls_private_key.key.private_key_pem}"
+  }
+}
+
+# Security Group
+resource "aws_security_group" "web" {
+  vpc_id      = "${module.vpc.id}"
+  tags        = "${var.tags}"
+  name        = "Gitea Server"
+  description = "allows custom ssh and www"
+
+  ingress {
+    from_port = 3000
+    to_port = 3000
+    protocol = "TCP"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+  ingress {
+    from_port = 22
+    to_port = 22
+    protocol = "TCP"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+  ingress {
+    from_port = 80
+    to_port = 80
+    protocol = "TCP"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+  ingress {
+    from_port   = "22"
+    to_port     = "22"
+    protocol    = "TCP"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+  egress {
+    from_port = 0
+    to_port = 0
+    protocol = "-1"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+}
\ No newline at end of file
diff --git a/meta.tf b/meta.tf
new file mode 100644
index 0000000..50a3021
--- /dev/null
+++ b/meta.tf
@@ -0,0 +1,19 @@
+################# inputs ################
+variable "tags" {
+  description = "A map of tags to add to all resources"
+  default     = {
+    Project = "gitea"
+  }
+}
+
+# The backend and provider are configured by env variables
+provider "aws" {}
+terraform {
+  backend "s3" {}
+}
+
+############## outputs #################
+
+output "amazon_domain" {
+  value = "${aws_instance.host.public_dns}"
+}
\ No newline at end of file
diff --git a/terraform-init.sh b/terraform-init.sh
new file mode 100755
index 0000000..2d4517f
--- /dev/null
+++ b/terraform-init.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+if [ "$#" -ne 1 ]; then
+    echo "usage: $0 name"
+    echo "where name is the s3 bucket (and dynamodb table) to be created for tf-remote-state storage"
+    exit 1
+fi
+tfname=$1
+tfstate=aws-init/terraform.tfstate
+
+terraform init aws-init
+
+# first, try to import remote storage
+terraform import -state=$tfstate -backup=- -config aws-init aws_s3_bucket.bucket $tfname || true
+terraform import -state=$tfstate -backup=- -config aws-init aws_dynamodb_table.table $tfname || true
+
+# create remote storage
+terraform apply -auto-approve -state=$tfstate -backup=- -var "name=$tfname" aws-init
+
+# to destroy (firstly set: prevent_destroy = false) :
+#terraform apply -auto-approve -state=$tfstate -backup=- -var "name=$tfname" -var "destroy=true" aws-init
+#terraform destroy -auto-approve -state=$tfstate -backup=- -var "name=$tfname" aws-init
+
+# init actual backend with proper remote storage 
+terraform init \
+    -backend-config="bucket=$tfname" \
+    -backend-config="key=gitea/terraform.tfstate" \
+    -backend-config="dynamodb_table=$tfname"
diff --git a/vpc/variables.tf b/vpc/variables.tf
new file mode 100644
index 0000000..d28f196
--- /dev/null
+++ b/vpc/variables.tf
@@ -0,0 +1,34 @@
+
+variable "cidr" {
+  description = "The CIDR block for the VPC. Default value is a valid CIDR, but not acceptable by AWS and should be overridden"
+  default     = "0.0.0.0/0"
+}
+variable "cidr_subnet" {
+  description = "the cidr of the subnet"
+  #default     = "0.0.0.0/0"
+}
+variable "tags" {
+  description = "A map of tags to add to all resources"
+  type = "map"
+  #default     = {}
+}
+variable "az" {
+  description = "availability zones in the region"
+  default     = ""
+}
+
+
+# A computed default 
+data "aws_availability_zones" "azs" {}
+locals {
+  default_az = "${data.aws_availability_zones.azs.names[0]}"
+  az         = "${var.az != "" ? var.az : local.default_az}"
+}
+
+# Outputs
+output "subnet" {
+  value = "${aws_subnet.public.id}"
+}
+output "id" {
+  value = "${aws_vpc.this.id}"
+}
\ No newline at end of file
diff --git a/vpc/vpc.tf b/vpc/vpc.tf
new file mode 100644
index 0000000..7288941
--- /dev/null
+++ b/vpc/vpc.tf
@@ -0,0 +1,36 @@
+# VPC 
+resource "aws_vpc" "this" {
+  tags                 = "${var.tags}"
+  cidr_block           = "${var.cidr}"
+  enable_dns_support   = true
+  enable_dns_hostnames = true
+}
+
+# Internet Gateway
+resource "aws_internet_gateway" "gw" {
+  vpc_id = "${aws_vpc.this.id}"
+  tags   = "${var.tags}"
+}
+
+# Publiс router
+resource "aws_route_table" "public" {
+  vpc_id = "${aws_vpc.this.id}"
+  tags   = "${var.tags}"
+  route {
+    cidr_block = "0.0.0.0/0"
+    gateway_id = "${aws_internet_gateway.gw.id}"
+  }
+}
+
+# Subnet
+resource "aws_subnet" "public" {
+  vpc_id                  = "${aws_vpc.this.id}"
+  tags                    = "${var.tags}"
+  cidr_block              = "${var.cidr_subnet}"
+  availability_zone       = "${local.az}"
+  map_public_ip_on_launch = true
+}
+resource "aws_route_table_association" "public" {
+  subnet_id      = "${aws_subnet.public.id}"
+  route_table_id = "${aws_route_table.public.id}"
+}