terraform-hcloud-kube-hetzner/agents.tf
2022-02-20 13:36:41 +01:00

80 lines
2.2 KiB
HCL

module "agents" {
source = "./modules/host"
count = var.agents_num
name = "k3s-agent-${count.index}"
ssh_keys = [hcloud_ssh_key.k3s.id]
public_key = var.public_key
private_key = var.private_key
additional_public_keys = var.additional_public_keys
firewall_ids = [hcloud_firewall.k3s.id]
placement_group_id = hcloud_placement_group.k3s.id
location = var.location
network_id = hcloud_network.k3s.id
ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 513 + count.index)
server_type = var.control_plane_server_type
labels = {
"provisioner" = "terraform",
"engine" = "k3s"
}
hcloud_token = var.hcloud_token
}
resource "null_resource" "agents" {
count = var.agents_num
triggers = {
agent_id = module.agents[count.index].id
}
connection {
user = "root"
private_key = local.ssh_private_key
agent_identity = local.ssh_identity
host = module.agents[count.index].ipv4_address
}
# Generating k3s agent config file
provisioner "file" {
content = yamlencode({
node-name = module.agents[count.index].name
server = "https://${local.first_control_plane_network_ip}:6443"
token = random_password.k3s_token.result
kubelet-arg = "cloud-provider=external"
flannel-iface = "eth1"
node-ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 513 + count.index)
node-label = var.automatically_upgrade_k3s ? ["k3s_upgrade=true"] : []
})
destination = "/tmp/config.yaml"
}
# Install k3s agent
provisioner "remote-exec" {
inline = local.install_k3s_agent
}
# Start the k3s agent and wait for it to have started
provisioner "remote-exec" {
inline = [
"systemctl start k3s-agent 2> /dev/null",
<<-EOT
timeout 120 bash <<EOF
until systemctl status k3s-agent > /dev/null; do
systemctl start k3s-agent 2> /dev/null
echo "Waiting for the k3s agent to start..."
sleep 2
done
EOF
EOT
]
}
depends_on = [
null_resource.first_control_plane,
hcloud_network_subnet.k3s
]
}