├── .github └── CODEOWNERS ├── .gitignore ├── LICENSE ├── README.md ├── app.py ├── cdk-python-k8s-real-hard-way.png ├── cdk.json ├── cdk_python_k8s_right_way_aws ├── __init__.py └── cdk_python_k8s_right_way_aws_stack.py ├── requirements.txt └── setup.py /.github/CODEOWNERS: -------------------------------------------------------------------------------- 1 | * @hajowieland 2 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | 2 | # PyCharm 3 | .idea 4 | 5 | # File-based project format 6 | *.iws 7 | 8 | # IntelliJ 9 | out/ 10 | 11 | # mpeltonen/sbt-idea plugin 12 | .idea_modules/ 13 | 14 | # JIRA plugin 15 | atlassian-ide-plugin.xml 16 | 17 | # Cursive Clojure plugin 18 | .idea/replstate.xml 19 | 20 | # Crashlytics plugin (for Android Studio and IntelliJ) 21 | com_crashlytics_export_strings.xml 22 | crashlytics.properties 23 | crashlytics-build.properties 24 | fabric.properties 25 | 26 | # Editor-based Rest Client 27 | .idea/httpRequests 28 | 29 | # Android studio 3.1+ serialized cache file 30 | .idea/caches/build_file_checksums.ser 31 | 32 | ### PyCharm Patch ### 33 | # Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721 34 | 35 | # *.iml 36 | # modules.xml 37 | # .idea/misc.xml 38 | # *.ipr 39 | 40 | # Sonarlint plugin 41 | .idea/sonarlint 42 | 43 | # End of https://www.gitignore.io/api/pycharm 44 | 45 | # Visual Studio Code 46 | .vscode 47 | 48 | # pycache 49 | __pycache__ 50 | *.egg-info/ 51 | 52 | # env 53 | .env 54 | 55 | # idea 56 | .idea 57 | 58 | # CDK 59 | cdk.out/ 60 | cdk.context.json 61 | 62 | ### macOS ### 63 | # General 64 | .DS_Store 65 | .AppleDouble 66 | .LSOverride 67 | 68 | # Icon must end with two \r 69 | Icon 70 | 71 | # Thumbnails 72 | ._* 73 | 74 | # Files that might appear in the root of a volume 75 | .DocumentRevisions-V100 76 | .fseventsd 77 | .Spotlight-V100 78 | .TemporaryItems 79 | .Trashes 80 | .VolumeIcon.icns 81 | .com.apple.timemachine.donotpresent 82 | 83 | # Directories potentially created on remote AFP share 84 | .AppleDB 85 | .AppleDesktop 86 | Network Trash Folder 87 | Temporary Items 88 | .apdisk 89 | 90 | # End of https://www.gitignore.io/api/macos 91 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | # CDK Python - Kubernetes The (real) Hard Way on AWS! 3 | 4 | This little project creates the infrastructure in CDK Python for my blog post [Kubernetes The (real) Hard Way on AWS](https://napo.io/posts/kubernetes-the-real-hard-way-on-aws/). 5 | 6 | > Terraform code available 🔗[HERE](https://github.com/hajowieland/terraform-k8s-the-real-hard-way-aws) 7 | 8 | 9 | You can practice creating a multi node K8s Cluster yourself for training purposes or CKA exam preparation. 10 | 11 | 12 | ![Alt text](cdk-python-k8s-real-hard-way.png?raw=true "Infrastructure Diagram") 13 | 14 | ## Requirements 15 | 16 | * Existing AWS EC2 Key Pair 17 | * Existing AWS Route53 Public Hosted Zone 18 | * aws-cli Profile 19 | * AWS CDK (`npm install -g cdk`) 20 | * Python3 21 | 22 | ## Features 23 | 24 | _Default values - you can adapt all of them to your needs_ 25 | 26 | * AWS CDK Python 27 | * 1x VPC, 3x Public Subnets, 3x Private Subnets, Route Tables, Routes 28 | * 3x Worker Nodes 29 | * 3x Master Nodes 30 | * 3x Etcd Nodes 31 | * 1x Bastion Host 32 | * Route53 Records for internal & external IPv4 addresses 33 | * 1x Public LoadBalancer for Master Nodes (external kubectl access) 34 | * 1x Private LoadBalancer for Master Nodes (fronting kube-apiservers) 35 | * 1x Public LoadBalancer for Bation Host (AutoScalingGroup) 36 | * Gets most recent Ubuntu AMI for all regions (via Boto3) 37 | * Install awscli, cfssl, cfssl_json via UserData 38 | * Allows external access from workstation IPv4 address only (to Bastion & MasterPublicLB) 39 | 40 | 41 | ## Variables 42 | 43 | | Name | Description | Type | Default | 44 | |------|-------------|:----:|:-----:| 45 | | aws\_account | AWS account ID to deploy infrastructure | string | `''` | 46 | | aws\_region | AWS region | string | `'us-east-1'` | 47 | | bastion\_desired\_capacity | Bastion ASG desired nodes | int | 1 | 48 | | bastion\_instance\_type | Bastion EC2 instance type | string | `'t3a.small'` | 49 | | bastion\_min\_capacity | Bastion ASG min. nodes | int | 1 | 50 | | bastion\_max\_capacity | Bastion ASG max. nodes | int | 1 | 51 | | etcd\_desired\_capacity | etcd ASG desired nodes | int | 3 | 52 | | etcd\_instance\_type | etcd EC2 instance type | string | `'t3a.small'` | 53 | | etcd\_min\_capacity | etcd ASG min. nodes | int | 3 | 54 | | etcd\_max\_capacity | etcd ASG max. nodes | int | 3 | 55 | | master\_desired\_capacity | K8s-Master ASG desired nodes | int | 3 | 56 | | master\_instance\_type | K8s-Master EC2 instance type | string | `'t3a.small'` | 57 | | master\_min\_capacity | K8s-Master ASG min. nodes | int | 3 | 58 | | master\_max\_capacity | K8s-Master ASG max. nodes | int | 3 | 59 | | worker\_desired\_capacity | K8s-Worker ASG desired nodes | int | 3 | 60 | | worker\_instance\_type | K8s-Worker EC2 instance type | string | `'t3a.small'` | 61 | | worker\_min\_capacity | K8s-Worker ASG min. nodes | int | 3 | 62 | | worker\_max\_capacity | K8s-Worker ASG max. nodes | int | 3 | 63 | | ssh\_key\_pair | AWS EC2 Key Pair name | string | `''` | 64 | | pod\_cidr | Pod CIDR network first octets (for `POD_CIDR` envvar) | string | `'10.200'` | 65 | | tag\_owner | Owner Tag for all resources | string | `'napo.io'` | 66 | | tag\_project | Project Tag for all resources | string | `'k8s-the-real-hard-way-aws'` | 67 | | vpc\_cidr | AWS VPC network CIDR | string | `'10.5.0.0/16'` | 68 | | zone\_fqdn | AWS Route53 Hosted Zone name | string | `''` | 69 | 70 | 71 | 72 | ### CDK Python Tutorial 73 | 74 | The `cdk.json` file tells the CDK Toolkit how to execute your app. 75 | 76 | This project is set up like a standard Python project. The initialization 77 | process also creates a virtualenv within this project, stored under the .env 78 | directory. To create the virtualenv it assumes that there is a `python3` 79 | (or `python` for Windows) executable in your path with access to the `venv` 80 | package. If for any reason the automatic creation of the virtualenv fails, 81 | you can create the virtualenv manually. 82 | 83 | To manually create a virtualenv on MacOS and Linux: 84 | 85 | ``` 86 | $ python3 -m venv .env 87 | ``` 88 | 89 | After the init process completes and the virtualenv is created, you can use the following 90 | step to activate your virtualenv. 91 | 92 | ``` 93 | $ source .env/bin/activate 94 | ``` 95 | 96 | If you are a Windows platform, you would activate the virtualenv like this: 97 | 98 | ``` 99 | % .env\Scripts\activate.bat 100 | ``` 101 | 102 | Once the virtualenv is activated, you can install the required dependencies. 103 | 104 | ``` 105 | $ pip install -r requirements.txt 106 | ``` 107 | 108 | At this point you can now synthesize the CloudFormation template for this code. 109 | 110 | ``` 111 | $ cdk synth 112 | ``` 113 | 114 | To add additional dependencies, for example other CDK libraries, just add 115 | them to your `setup.py` file and rerun the `pip install -r requirements.txt` 116 | command. 117 | 118 | ### Useful commands 119 | 120 | * `cdk ls` list all stacks in the app 121 | * `cdk synth` emits the synthesized CloudFormation template 122 | * `cdk deploy` deploy this stack to your default AWS account/region 123 | * `cdk diff` compare deployed stack with current state 124 | * `cdk docs` open CDK documentation 125 | 126 | Enjoy! 127 | -------------------------------------------------------------------------------- /app.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | from aws_cdk import core 4 | 5 | from cdk_python_k8s_right_way_aws.cdk_python_k8s_right_way_aws_stack import CdkPythonK8SRightWayAwsStack, aws_region, aws_account 6 | 7 | app = core.App() 8 | CdkPythonK8SRealWayAwsStack(app, "cdk-python-k8s-real-way-aws", env={'account': aws_account, 'region': aws_region}) 9 | 10 | app.synth() 11 | -------------------------------------------------------------------------------- /cdk-python-k8s-real-hard-way.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hajowieland/cdk-py-k8s-the-real-hard-way-aws/38f231074600e48882c942a98cf77bcac3e11648/cdk-python-k8s-real-hard-way.png -------------------------------------------------------------------------------- /cdk.json: -------------------------------------------------------------------------------- 1 | { 2 | "app": "python3 app.py" 3 | } 4 | -------------------------------------------------------------------------------- /cdk_python_k8s_right_way_aws/__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hajowieland/cdk-py-k8s-the-real-hard-way-aws/38f231074600e48882c942a98cf77bcac3e11648/cdk_python_k8s_right_way_aws/__init__.py -------------------------------------------------------------------------------- /cdk_python_k8s_right_way_aws/cdk_python_k8s_right_way_aws_stack.py: -------------------------------------------------------------------------------- 1 | from aws_cdk import ( 2 | aws_autoscaling as autoscaling, 3 | aws_ec2 as ec2, 4 | aws_elasticloadbalancing as elb, 5 | aws_route53 as route53, 6 | aws_route53_targets as route53_targets, 7 | aws_iam as iam, 8 | core, 9 | ) 10 | 11 | from requests import get 12 | import boto3 13 | from operator import itemgetter 14 | 15 | # --------------------------------------------------------- 16 | # TODO 17 | # - flannel CNI 18 | # --------------------------------------------------------- 19 | # Configuration Variables 20 | # --------------------------------------------------------- 21 | 22 | # Global Tags applied to all resources 23 | # Project Tag 24 | tag_project = 'k8s-the-real-hard-way-aws' 25 | 26 | # Owner Tag (your name) 27 | tag_owner = 'napo.io' 28 | 29 | # AWS account 30 | aws_account = '' 31 | 32 | # AWS region 33 | aws_region = 'us-east-1' 34 | 35 | # Get your workstation IPv4 address 36 | myipv4 = get('https://api.ipify.org').text + "/32" 37 | 38 | # Configure your AWS key pair name here 39 | ssh_key_pair = '' 40 | 41 | # Set VPC CIDR 42 | vpc_cidr = '10.5.0.0/16' 43 | 44 | # FQDN of the hosted zone to create Route53 records in 45 | # Example: test.example.com 46 | zone_fqdn = '' 47 | 48 | # Flannel CNI CIDR 49 | # flannel_cidr = '10.244.0.0/16' 50 | 51 | # Pod CIDR range, exported as POD_CIDR in Worker nodes UserData 52 | pod_cidr = '10.200' 53 | 54 | # Bastion Host 55 | bastion_min_capacity = 1 56 | bastion_max_capacity = 1 57 | bastion_desired_capacity = 1 58 | bastion_instance_type = "t3a.small" 59 | 60 | # Number of etcd nodes 61 | etcd_min_capacity = 3 62 | etcd_max_capacity = 3 63 | etcd_desired_capacity = 3 64 | etcd_instance_type = "t3a.small" 65 | 66 | # Number of Kubernetes master nodes (control plane) 67 | master_min_capacity = 3 68 | master_max_capacity = 3 69 | master_desired_capacity = 3 70 | master_instance_type = "t3a.small" 71 | 72 | # Number of kubernetes worker nodes 73 | worker_min_capacity = 3 74 | worker_max_capacity = 3 75 | worker_desired_capacity = 3 76 | worker_instance_type = "t3a.small" 77 | # --------------------------------------------------------- 78 | 79 | 80 | # Create dict for region <=> Ubuntu AMI mapping 81 | ami_region_map = {} 82 | 83 | # Loop through all regions and get the most recent Ubuntu Bionic AMIs for all AWS regions 84 | ec2_client = boto3.client('ec2', region_name=aws_region) 85 | response = ec2_client.describe_regions() 86 | 87 | for region in response['Regions']: 88 | regionname = region['RegionName'] 89 | ec2_region = boto3.client('ec2', region_name=regionname) 90 | response = ec2_region.describe_images( 91 | Filters=[ 92 | { 93 | 'Name': 'name', 94 | 'Values': [ 95 | 'ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-**', 96 | ] 97 | }, 98 | ], 99 | Owners=[ 100 | '099720109477' 101 | ] 102 | ) 103 | image_details = sorted(response['Images'], key=itemgetter('CreationDate'), reverse=True) 104 | ami_id = image_details[0]['ImageId'] 105 | ami_region_map[regionname] = ami_id 106 | 107 | 108 | # Default Tags applied to all taggable AWS Resources in Stack 109 | default_tags={ 110 | "Project": tag_project, 111 | "Owner": tag_owner 112 | } 113 | 114 | 115 | class CdkPythonK8SRealWayAwsStack(core.Stack): 116 | 117 | def __init__(self, scope: core.Construct, id: str, **kwargs) -> None: 118 | super().__init__(scope, id, tags=default_tags, **kwargs) 119 | 120 | # VPC 121 | vpc = ec2.Vpc( 122 | self, 123 | 'k8s-real-hard-way-vpc', 124 | cidr=vpc_cidr, 125 | subnet_configuration=[ 126 | ec2.SubnetConfiguration( 127 | cidr_mask=24, 128 | name='Public', 129 | subnet_type=ec2.SubnetType.PUBLIC, 130 | 131 | ), 132 | ec2.SubnetConfiguration( 133 | cidr_mask=24, 134 | name='Private', 135 | subnet_type=ec2.SubnetType.PRIVATE 136 | ) 137 | ] 138 | ) 139 | 140 | # Ubuntu AMI from dict mapping 141 | ubuntu_ami = ec2.GenericLinuxImage( 142 | ami_map={ 143 | aws_region: ami_region_map.get(aws_region) 144 | } 145 | ) 146 | 147 | # Get HostedZone ID from HostedZone Name 148 | zoneid = route53.HostedZone.from_lookup( 149 | self, 150 | "k8s-real-hard-way-zone", 151 | domain_name=zone_fqdn 152 | ) 153 | zoneid_str = zoneid.hosted_zone_id 154 | 155 | # IAM Policy for Bastion Instance Profile 156 | iampolicystatement = iam.PolicyStatement( 157 | actions=[ 158 | "ec2:CreateRoute", 159 | "ec2:CreateTags", 160 | "ec2:DescribeAutoScalingGroups", 161 | "autoscaling:DescribeAutoScalingInstances", 162 | "ec2:DescribeRegions", 163 | "ec2:DescribeRouteTables", 164 | "ec2:DescribeInstances", 165 | "ec2:DescribeTags", 166 | "elasticloadbalancing:DescribeLoadBalancers", 167 | "route53:ListHostedZonesByName" 168 | ], 169 | effect=iam.Effect.ALLOW, 170 | resources=[ 171 | "*" 172 | ] 173 | ) 174 | iampolicystatement_route53 = iam.PolicyStatement( 175 | actions=[ 176 | "route53:ChangeResourceRecordSets" 177 | ], 178 | effect=iam.Effect.ALLOW, 179 | resources=[ 180 | "arn:aws:route53:::" + zoneid_str[1:] 181 | ] 182 | ) 183 | # BASTION HOST 184 | # AutoScalingGroup 185 | bastion = autoscaling.AutoScalingGroup( 186 | self, 187 | "bastion", 188 | vpc=vpc, 189 | min_capacity=bastion_min_capacity, 190 | max_capacity=bastion_max_capacity, 191 | desired_capacity=bastion_desired_capacity, 192 | instance_type=ec2.InstanceType(bastion_instance_type), 193 | machine_image=ec2.AmazonLinuxImage(), 194 | key_name=ssh_key_pair, 195 | vpc_subnets=ec2.SubnetSelection( 196 | subnet_name='Private' 197 | ), 198 | associate_public_ip_address=False 199 | ) 200 | bastion.add_to_role_policy(iampolicystatement) 201 | bastion.add_to_role_policy(iampolicystatement_route53) 202 | 203 | cfn_bastion = bastion.node.default_child 204 | cfn_bastion.auto_scaling_group_name = "bastion" 205 | cfn_bastion_lc = bastion.node.find_child('LaunchConfig') 206 | cfn_bastion_lc.launch_configuration_name = "bastion" 207 | 208 | # Classic LoadBalancer 209 | bastion_lb = elb.LoadBalancer( 210 | self, 211 | "bastion-lb", 212 | vpc=vpc, 213 | internet_facing=True, 214 | health_check=elb.HealthCheck( 215 | port=22, 216 | protocol=elb.LoadBalancingProtocol.TCP 217 | ) 218 | ) 219 | 220 | cfn_bastion_lb = bastion_lb.node.default_child 221 | cfn_bastion_lb.load_balancer_name = "bastion" 222 | 223 | bastion_lb.add_listener( 224 | external_port=22, 225 | external_protocol=elb.LoadBalancingProtocol.TCP, 226 | allow_connections_from=[ec2.Peer().ipv4(myipv4)] 227 | ) 228 | bastion_lb.add_target( 229 | target=bastion 230 | ) 231 | # UserData 232 | bastion.add_user_data( 233 | "sudo yum update", 234 | "sudo yum upgrade -y", 235 | "sudo yum install jq tmux -y", 236 | "wget https://gist.githubusercontent.com/dmytro/3984680/raw/1e25a9766b2f21d7a8e901492bbf9db672e0c871/ssh-multi.sh -O /home/ec2-user/tmux-multi.sh", 237 | "chmod +x /home/ec2-user/tmux-multi.sh", 238 | "wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 && chmod +x cfssl_linux-amd64 && sudo mv cfssl_linux-amd64 /usr/local/bin/cfssl && sudo chown ec2-user:ec2-user /usr/local/bin/cfssl", 239 | "wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 && chmod +x cfssljson_linux-amd64 && sudo mv cfssljson_linux-amd64 /usr/local/bin/cfssljson && sudo chown ec2-user:ec2-user /usr/local/bin/cfssljson", 240 | "curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x ./kubectl && sudo mv kubectl /usr/local/bin/kubectl && chown ec2-user:ec2-user /usr/local/bin/kubectl", 241 | "sudo hostname " + "bastion" + "." + zone_fqdn, 242 | "echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment", 243 | "echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment" 244 | ) 245 | # Route53 Alias Target for LB 246 | route53_target = route53_targets.ClassicLoadBalancerTarget(bastion_lb) 247 | # Route53 Record for Bastion Host LB 248 | route53_bastion = route53.ARecord( 249 | self, 250 | "bastion-lb-route53", 251 | target=route53.RecordTarget.from_alias(route53_target), 252 | zone=zoneid, 253 | comment="Bastion Host LB", 254 | record_name='bastion' 255 | ) 256 | 257 | # ETCD 258 | # AutoScalingGroup 259 | etcd = autoscaling.AutoScalingGroup( 260 | self, 261 | "etcd", 262 | vpc=vpc, 263 | min_capacity=etcd_min_capacity, 264 | max_capacity=etcd_max_capacity, 265 | desired_capacity=etcd_desired_capacity, 266 | instance_type=ec2.InstanceType(etcd_instance_type), 267 | machine_image=ubuntu_ami, 268 | key_name=ssh_key_pair, 269 | vpc_subnets=ec2.SubnetSelection( 270 | subnet_name='Private' 271 | ), 272 | associate_public_ip_address=False 273 | ) 274 | etcd.add_to_role_policy(iampolicystatement) 275 | 276 | cfn_etcd = etcd.node.default_child 277 | cfn_etcd.auto_scaling_group_name = "etcd" 278 | cfn_etcd_lc = etcd.node.find_child('LaunchConfig') 279 | cfn_etcd_lc.launch_configuration_name = "etcd" 280 | 281 | # UserData 282 | etcd.add_user_data( 283 | "sudo apt-get update", 284 | "sudo apt-get upgrade -y", 285 | "sudo apt-get install python3-pip -y", 286 | "sudo pip3 install awscli", 287 | "echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment", 288 | "echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment", 289 | "echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment" 290 | ) 291 | 292 | # KUBERNETES MASTER Load Balancer 293 | # Public Load Balancer (for remote kubectl access) 294 | master_public_lb = elb.LoadBalancer( 295 | self, 296 | "k8s-real-hard-way-master-public-lb", 297 | vpc=vpc, 298 | internet_facing=True, 299 | health_check=elb.HealthCheck( 300 | port=6443, 301 | protocol=elb.LoadBalancingProtocol.TCP 302 | ) 303 | ) 304 | master_public_lb.add_listener( 305 | external_port=6443, 306 | external_protocol=elb.LoadBalancingProtocol.TCP, 307 | allow_connections_from=[ec2.Peer().ipv4(myipv4)] 308 | ) 309 | 310 | cfn_master_public_lb = master_public_lb.node.default_child 311 | cfn_master_public_lb.load_balancer_name = "master-public" 312 | 313 | # Private Load Balancer (fronting kube-apiservers) 314 | master_private_lb = elb.LoadBalancer( 315 | self, 316 | "k8s-real-hard-way-master-private-lb", 317 | vpc=vpc, 318 | internet_facing=False, 319 | health_check=elb.HealthCheck( 320 | port=6443, 321 | protocol=elb.LoadBalancingProtocol.TCP 322 | ) 323 | ) 324 | master_private_lb.add_listener( 325 | external_port=6443, 326 | external_protocol=elb.LoadBalancingProtocol.TCP, 327 | allow_connections_from=[] 328 | ) 329 | 330 | cfn_master_private_lb = master_private_lb.node.default_child 331 | cfn_master_private_lb.load_balancer_name = "master-private" 332 | 333 | # AutoScalingGroup 334 | master = autoscaling.AutoScalingGroup( 335 | self, 336 | "master", 337 | vpc=vpc, 338 | min_capacity=master_min_capacity, 339 | max_capacity=master_max_capacity, 340 | desired_capacity=master_desired_capacity, 341 | instance_type=ec2.InstanceType(master_instance_type), 342 | machine_image=ubuntu_ami, 343 | key_name=ssh_key_pair, 344 | vpc_subnets=ec2.SubnetSelection( 345 | subnet_name='Private' 346 | ), 347 | associate_public_ip_address=False 348 | ) 349 | master.add_to_role_policy(iampolicystatement) 350 | 351 | cfn_master = master.node.default_child 352 | cfn_master.auto_scaling_group_name = "master" 353 | cfn_master_lc = master.node.find_child('LaunchConfig') 354 | cfn_master_lc.launch_configuration_name = "master" 355 | 356 | # Add ASG as target for LBs 357 | master_public_lb.add_target( 358 | target=master 359 | ) 360 | master_private_lb.add_target( 361 | target=master 362 | ) 363 | # UserData 364 | master.add_user_data( 365 | "sudo apt-get update", 366 | "sudo apt-get upgrade -y", 367 | "sudo apt-get install python3-pip -y", 368 | "sudo pip3 install awscli", 369 | "echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment", 370 | "echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment", 371 | "echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment" 372 | ) 373 | 374 | # KUBERNETES WORKER 375 | worker = autoscaling.AutoScalingGroup( 376 | self, 377 | "worker", 378 | vpc=vpc, 379 | min_capacity=worker_min_capacity, 380 | max_capacity=worker_max_capacity, 381 | desired_capacity=worker_desired_capacity, 382 | instance_type=ec2.InstanceType(worker_instance_type), 383 | machine_image=ubuntu_ami, 384 | key_name=ssh_key_pair, 385 | vpc_subnets=ec2.SubnetSelection( 386 | subnet_name='Private' 387 | ), 388 | associate_public_ip_address=False 389 | ) 390 | worker.add_to_role_policy(iampolicystatement) 391 | 392 | cfn_worker = worker.node.default_child 393 | cfn_worker.auto_scaling_group_name = "worker" 394 | cfn_worker_lc = worker.node.find_child('LaunchConfig') 395 | cfn_worker_lc.launch_configuration_name = "worker" 396 | 397 | # UserData 398 | worker.add_user_data( 399 | "sudo apt-get update", 400 | "sudo apt-get upgrade -y", 401 | "sudo apt-get install python3-pip -y", 402 | "sudo pip3 install awscli", 403 | "RANDOM_NUMBER=$(shuf -i 10-250 -n 1)", 404 | "echo \"POD_CIDR=" + pod_cidr + ".$RANDOM_NUMBER.0/24\" | sudo tee -a /etc/environment", 405 | "echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment", 406 | "echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment", 407 | "echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment" 408 | ) 409 | 410 | # SecurityGroups 411 | # Bastion LB 412 | bastion_lb_sg = ec2.SecurityGroup( 413 | self, 414 | "bastion-lb-sg", 415 | vpc=vpc, 416 | allow_all_outbound=True, 417 | description="Bastion-LB", 418 | ) 419 | # Kubernetes Master Public LB 420 | master_public_lb_sg = ec2.SecurityGroup( 421 | self, 422 | "k8s-real-hard-way-master-public-lb-sg", 423 | vpc=vpc, 424 | allow_all_outbound=True, 425 | description="K8s MasterPublicLB", 426 | ) 427 | # Kubernetes Master Private LB 428 | master_private_lb_sg = ec2.SecurityGroup( 429 | self, 430 | "k8s-real-hard-way-master-private-lb-sg", 431 | vpc=vpc, 432 | allow_all_outbound=True, 433 | description="K8s MasterPrivateLB", 434 | ) 435 | # Bastion 436 | bastion_security_group = ec2.SecurityGroup( 437 | self, 438 | "bastion-security-group", 439 | vpc=vpc, 440 | allow_all_outbound=True, 441 | description="Bastion" 442 | ) 443 | # etcd 444 | etcd_security_group = ec2.SecurityGroup( 445 | self, 446 | "etcd-security-group", 447 | vpc=vpc, 448 | allow_all_outbound=True, 449 | description="etcd" 450 | ) 451 | # Kubernetes Master 452 | master_securiy_group = ec2.SecurityGroup( 453 | self, 454 | "master-security-group", 455 | vpc=vpc, 456 | allow_all_outbound=True, 457 | description="K8s Master", 458 | ) 459 | # Kubernetes Worker 460 | worker_security_group = ec2.SecurityGroup( 461 | self, 462 | "worker-security-group", 463 | vpc=vpc, 464 | allow_all_outbound=True, 465 | description="K8s Worker" 466 | ) 467 | 468 | # SecurityGroup Rules 469 | # Bastion LB 470 | bastion_lb_sg.add_ingress_rule( 471 | peer=ec2.Peer().ipv4(myipv4), 472 | connection=ec2.Port.tcp(22), 473 | description="SSH: Workstation - MasterPublicLB" 474 | ) 475 | # Master Public LB 476 | master_public_lb_sg.add_ingress_rule( 477 | peer=ec2.Peer().ipv4(myipv4), 478 | connection=ec2.Port.tcp(6443), 479 | description="kubectl: Workstation - MasterPublicLB" 480 | ) 481 | master_public_lb_sg.add_ingress_rule( 482 | peer=master_securiy_group, 483 | connection=ec2.Port.tcp(6443), 484 | description="kubeapi: Workers - MasterPublicLB" 485 | ) 486 | # Master Private LB 487 | # master_private_lb_sg.add_ingress_rule( 488 | # peer=master_securiy_group, 489 | # connection=ec2.Port.tcp(6443), 490 | # description="kubectl: Masters - MasterPrivateLB" 491 | # ) 492 | # master_private_lb_sg.add_ingress_rule( 493 | # peer=worker_security_group, 494 | # connection=ec2.Port.tcp(6443), 495 | # description="kubeapi: Workers - MasterPrivateLB" 496 | # ) 497 | master_private_lb_sg.add_ingress_rule( 498 | peer=ec2.Peer.any_ipv4(), 499 | connection=ec2.Port.tcp(6443), 500 | description="kubectl: ALL - MasterPrivateLB" 501 | ) 502 | # Bastion Host 503 | bastion_security_group.add_ingress_rule( 504 | peer=bastion_lb_sg, 505 | connection=ec2.Port.tcp(22), 506 | description="SSH: Bastion-LB - Bastio" 507 | ) 508 | # etcd 509 | etcd_security_group.add_ingress_rule( 510 | peer=bastion_security_group, 511 | connection=ec2.Port.tcp(22), 512 | description="SSH: Bastion - Etcds" 513 | ) 514 | etcd_security_group.add_ingress_rule( 515 | peer=master_securiy_group, 516 | connection=ec2.Port.tcp_range(start_port=2379, end_port=2380), 517 | description="etcd: Masters - Etcds" 518 | ) 519 | etcd_security_group.add_ingress_rule( 520 | peer=etcd_security_group, 521 | connection=ec2.Port.tcp_range(start_port=2379, end_port=2380), 522 | description="etcd: Etcds - Etcds" 523 | ) 524 | # K8s-Master 525 | master_securiy_group.add_ingress_rule( 526 | peer=worker_security_group, 527 | connection=ec2.Port.all_traffic(), 528 | description="ALL: Workers - Masters" 529 | ) 530 | master_securiy_group.add_ingress_rule( 531 | peer=bastion_security_group, 532 | connection=ec2.Port.tcp(22), 533 | description="SSH: Bastion - Masters" 534 | ) 535 | master_securiy_group.add_ingress_rule( 536 | peer=bastion_security_group, 537 | connection=ec2.Port.tcp(6443), 538 | description="kubectl: Bastion - Masters" 539 | ) 540 | master_securiy_group.add_ingress_rule( 541 | peer=master_public_lb_sg, 542 | connection=ec2.Port.tcp(6443), 543 | description="kubectl: MasterPublicLB - Masters" 544 | ) 545 | master_securiy_group.add_ingress_rule( 546 | peer=master_private_lb_sg, 547 | connection=ec2.Port.tcp(6443), 548 | description="kubectl: MasterPrivateLB - Masters" 549 | ) 550 | master_securiy_group.add_ingress_rule( 551 | peer=worker_security_group, 552 | connection=ec2.Port.tcp(6443), 553 | description="kubectl: Workers - Masters" 554 | ) 555 | # K8s-Worker 556 | worker_security_group.add_ingress_rule( 557 | peer=master_securiy_group, 558 | connection=ec2.Port.all_traffic(), 559 | description="ALL: Master - Workers" 560 | ) 561 | worker_security_group.add_ingress_rule( 562 | peer=bastion_security_group, 563 | connection=ec2.Port.tcp(22), 564 | description="SSH: Bastion - Workers" 565 | ) 566 | worker_security_group.add_ingress_rule( 567 | peer=bastion_security_group, 568 | connection=ec2.Port.tcp(6443), 569 | description="kubectl: Bastion - Workers" 570 | ) 571 | 572 | # Add SecurityGroups to resources 573 | bastion.add_security_group(bastion_security_group) 574 | etcd.add_security_group(etcd_security_group) 575 | master.add_security_group(master_securiy_group) 576 | worker.add_security_group(worker_security_group) 577 | cfn_master_public_lb.security_groups = [ 578 | master_public_lb_sg.security_group_id 579 | ] 580 | cfn_master_private_lb.security_groups = [ 581 | master_private_lb_sg.security_group_id 582 | ] 583 | 584 | # Add specific Tags to resources 585 | core.Tag.add( 586 | bastion, 587 | apply_to_launched_instances=True, 588 | key='Name', 589 | value=tag_project + '-bastion' 590 | ) 591 | core.Tag.add( 592 | bastion_lb, 593 | apply_to_launched_instances=True, 594 | key='Name', 595 | value=tag_project + '-bastion-lb' 596 | ) 597 | core.Tag.add( 598 | master_public_lb, 599 | apply_to_launched_instances=True, 600 | key='Name', 601 | value=tag_project + '-master-lb' 602 | ) 603 | core.Tag.add( 604 | etcd, 605 | apply_to_launched_instances=True, 606 | key='Name', 607 | value=tag_project + '-etcd' 608 | ) 609 | core.Tag.add( 610 | master, 611 | apply_to_launched_instances=True, 612 | key='Name', 613 | value=tag_project + '-k8s-master' 614 | ) 615 | core.Tag.add( 616 | worker, 617 | apply_to_launched_instances=True, 618 | key='Name', 619 | value=tag_project + '-k8s-worker' 620 | ) 621 | for subnet in vpc.private_subnets: 622 | core.Tag.add( 623 | subnet, 624 | key='Attribute', 625 | value='private' 626 | ) 627 | for subnet in vpc.public_subnets: 628 | core.Tag.add( 629 | subnet, 630 | key='Attribute', 631 | value='public' 632 | ) 633 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | astroid==2.2.5 2 | attrs==19.3.0 3 | aws-cdk.assets==1.15.0 4 | aws-cdk.aws-apigateway==1.15.0 5 | aws-cdk.aws-autoscaling==1.15.0 6 | aws-cdk.aws-autoscaling-common==1.15.0 7 | aws-cdk.aws-certificatemanager==1.15.0 8 | aws-cdk.aws-cloudformation==1.15.0 9 | aws-cdk.aws-cloudfront==1.15.0 10 | aws-cdk.aws-cloudwatch==1.15.0 11 | aws-cdk.aws-ec2==1.15.0 12 | aws-cdk.aws-elasticloadbalancing==1.15.0 13 | aws-cdk.aws-elasticloadbalancingv2==1.15.0 14 | aws-cdk.aws-events==1.15.0 15 | aws-cdk.aws-iam==1.15.0 16 | aws-cdk.aws-kms==1.15.0 17 | aws-cdk.aws-lambda==1.15.0 18 | aws-cdk.aws-logs==1.15.0 19 | aws-cdk.aws-route53==1.15.0 20 | aws-cdk.aws-route53-targets==1.15.0 21 | aws-cdk.aws-s3==1.15.0 22 | aws-cdk.aws-s3-assets==1.15.0 23 | aws-cdk.aws-sns==1.15.0 24 | aws-cdk.aws-sqs==1.15.0 25 | aws-cdk.aws-ssm==1.15.0 26 | aws-cdk.core==1.15.0 27 | aws-cdk.cx-api==1.15.0 28 | aws-cdk.region-info==1.15.0 29 | boto3==1.10.14 30 | botocore==1.13.14 31 | cattrs==0.9.0 32 | -e git+git@github.com:hajowieland/cdk-py-k8s-the-right-hard-way-aws.git@e1e853bf766709e03699da84d9aaec564110c5a5#egg=cdk_python_k8s_right_way_aws 33 | certifi==2022.12.7 34 | chardet==3.0.4 35 | docutils==0.15.2 36 | idna==2.8 37 | isort==4.3.21 38 | jmespath==0.9.4 39 | jsii==0.19.0 40 | lazy-object-proxy==1.4.1 41 | mccabe==0.6.1 42 | publication==0.0.3 43 | pylint==2.3.1 44 | python-dateutil==2.8.0 45 | requests==2.22.0 46 | s3transfer==0.2.1 47 | six==1.13.0 48 | typed-ast==1.4.0 49 | typing-extensions==3.7.4.1 50 | urllib3==1.26.5 51 | wrapt==1.11.2 52 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | import setuptools 2 | 3 | 4 | with open("README.md") as fp: 5 | long_description = fp.read() 6 | 7 | 8 | setuptools.setup( 9 | name="cdk_python_k8s_real_way_aws", 10 | version="2.1.1", 11 | 12 | description="Kubernetes The (real) Hard Way (AWS) CDK Python app", 13 | long_description=long_description, 14 | long_description_content_type="text/markdown", 15 | 16 | author="author", 17 | 18 | package_dir={"": "cdk_python_k8s_real_way_aws"}, 19 | packages=setuptools.find_packages(where="cdk_python_k8s_real_way_aws"), 20 | 21 | install_requires=[ 22 | "aws-cdk.core", 23 | ], 24 | 25 | python_requires=">=3.6", 26 | 27 | classifiers=[ 28 | "Development Status :: 4 - Beta", 29 | 30 | "Intended Audience :: Developers", 31 | 32 | "License :: OSI Approved :: Apache Software License", 33 | 34 | "Programming Language :: JavaScript", 35 | "Programming Language :: Python :: 3 :: Only", 36 | "Programming Language :: Python :: 3.6", 37 | "Programming Language :: Python :: 3.7", 38 | "Programming Language :: Python :: 3.8", 39 | 40 | "Topic :: Software Development :: Code Generators", 41 | "Topic :: Utilities", 42 | 43 | "Typing :: Typed", 44 | ], 45 | ) 46 | --------------------------------------------------------------------------------