Table of Contents
Docker Swarm Terraform
Deploy a docker swarm in Proxmox.
Features
- Creates VMs for Both Docker Manager and Workers using template
- Initialises the swarm manager and registers additional managers and worker VMs
- Scale the swarm vertically or horizontally as required
- Shared Storage in all Nodes
Note: It can be run on any machine with access to Proxmox and Terraform Installed.
Preparation
Note: This method requires an ubuntu vm template with docker installed and accessible to the user ubuntu as non-root command. To create a compatible vm programtically refer to proxmox-ubuntu-vm-template
- Create env.tfvars (in the same directory as main.tf)
nano env.tfvars
- Check variables.tf, read the descriptions and add the required variables to env.tfvars. The env.tfvars file should look something like this:
PROXMOX_IP = "PROXMOX_IP"
PM_API_TOKEN_ID = "proxmox-token-id"
PM_API_TOKEN_SECRET = "proxmox-token-secret"
docker_manager_count=3
docker_worker_count=4
.
.
.
# Other Variables
Running the Module
- (First Run) Initialise the Project: Installs the required dependencies.
terraform init
- Plan the deployment
terraform plan -var-file="env.tfvars"
- Apply the changes
WARNING: This would actually update the resources on Proxmox.
terraform apply -var-file="env.tfvars"
- Destroy the VMs
terraform destroy -var-file="env.tfvars"
Network Config
Note: Make sure the IP addresses do not overlap. The current config of IP addresses restrict the number of VM to
- Max allowed Managers: 5
- Max allowed Workers: 5
Network Configuration
docker_manager_ipv4_range=10.2.21.12
docker_worker_ipv4_range=10.2.21.12
docker_manager_range_offset=0
docker_worker_range_offset=5
Generate Ansible Inventory
Ansible inventory is created in ansible/inventory upon completion of the terraform deployment is complete.
You can manually configure and run any Ansible playbooks.