This is a WIP, in its first MVP.
The purpose of this repo is to deploy k3os on AWS, and defining configuration via terraform variables. The current design is meant to be light weight with limited features, but very easy to bring up.
Currently this only supports a single master deployment.
Future pushes will add AWS plugins, db options, loadbalancer options, more k3s flags, and hopefully I'll find an easy way to automatically deploy manifests post install.
YMMV by what you run, of course, but here are the metrics-server CPU/Memory consumption post install (no loads running). (k3s 1.0.0, k3os 0.7.1)
[~]# kubectl top nodes
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
ip-10-1-1-116.us-east-2.compute.internal 12m 1% 245Mi 24%
ip-10-1-1-217.us-east-2.compute.internal 11m 1% 221Mi 22%
ip-10-1-1-232.us-east-2.compute.internal 32m 3% 571Mi 58%
ip-10-1-1-51.us-east-2.compute.internal 9m 0% 222Mi 22%
[~]$ kubectl top nodes
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
ip-10-1-1-172.us-east-2.compute.internal 10m 1% 228Mi 47%
ip-10-1-1-202.us-east-2.compute.internal 30m 3% 590Mi 60%
ip-10-1-1-237.us-east-2.compute.internal 10m 1% 225Mi 47%
ip-10-1-1-246.us-east-2.compute.internal 12m 1% 197Mi 41%
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| agent_image_id | AMI to use for k3s agent instances | string | "ami-0ed92ab0a9ecbbcf4" |
no |
| agent_instance_type | string | "t2.micro" |
no | |
| agent_node_count | Number of agent nodes to launch | number | "3" |
no |
| api_eip | EIP Association id for the master node | string | "null" |
no |
| data_sources | data sources for node | list | [ "aws" ] |
no |
| dns_nameservers | kernel modules for node | list | [ "8.8.8.8", "1.1.1.1" ] |
no |
| k3s_args | Additional k3s args (kube-proxy, kubelet, and controller args also go here | list | [] |
no |
| k3s_cluster_secret | Override to set k3s cluster registration secret - This will be made random at default | string | "abcdef12345" |
no |
| kernel_modules | kernel modules for node | list | [] |
no |
| keypair_key | Keypair Key | string | "ssh-rsa AAAAB3NADSKJFJDSAFdsafds example@example.com" |
no |
| keypair_name | Keypair name | string | "k3s_key" |
no |
| ntp_servers | ntp servers | list | [ "0.us.pool.ntp.org", "1.us.pool.ntp.org" ] |
no |
| server_image_id | AMI to use for k3s server instances | string | "ami-0ed92ab0a9ecbbcf4" |
no |
| server_instance_type | string | "t2.micro" |
no | |
| server_node_count | Number of server nodes to launch | number | "1" |
no |
| ssh_keys | SSH Keys to inject into nodes | list | [] |
no |
| sync_manifests | If true, terraform will copy the contents of the manifests directory in the repo to /var/lib/rancher/k3s/server/manifestsi - ssh-agent required |
bool | "false" |
no |
| sysctls | sysctl params for node | list | [] |
no |
| vpc_cidr | VPC CIDR | string | "10.0.0.0/16" |
no |
| vpc_subnet | VPC Subnet | string | "10.0.1.0/24" |
no |
| Name | Description |
|---|---|
| public_api_ip |