85 lines
2.5 KiB
HCL
85 lines
2.5 KiB
HCL
module "agents" {
|
|
source = "./modules/host"
|
|
|
|
for_each = local.agent_nodepools
|
|
|
|
name = "${var.use_cluster_name_in_node_name ? "${var.cluster_name}-" : ""}${each.value.nodepool_name}"
|
|
ssh_keys = [hcloud_ssh_key.k3s.id]
|
|
public_key = var.public_key
|
|
private_key = var.private_key
|
|
additional_public_keys = var.additional_public_keys
|
|
firewall_ids = [hcloud_firewall.k3s.id]
|
|
placement_group_id = hcloud_placement_group.k3s.id
|
|
location = var.location
|
|
server_type = each.value.server_type
|
|
ipv4_subnet_id = hcloud_network_subnet.subnet[each.value.subnet].id
|
|
|
|
# We leave some room so 100 eventual Hetzner LBs that can be created perfectly safely
|
|
# It leaves the subnet with 254 x 254 - 100 = 64416 IPs to use, so probably enough.
|
|
private_ipv4 = cidrhost(var.network_ipv4_subnets[each.value.subnet], each.value.index + 101)
|
|
|
|
labels = {
|
|
"provisioner" = "terraform",
|
|
"engine" = "k3s"
|
|
}
|
|
|
|
depends_on = [
|
|
hcloud_network_subnet.subnet
|
|
]
|
|
}
|
|
|
|
resource "null_resource" "agents" {
|
|
for_each = local.agent_nodepools
|
|
|
|
triggers = {
|
|
agent_id = module.agents[each.key].id
|
|
}
|
|
|
|
connection {
|
|
user = "root"
|
|
private_key = local.ssh_private_key
|
|
agent_identity = local.ssh_identity
|
|
host = module.agents[each.key].ipv4_address
|
|
}
|
|
|
|
# Generating k3s agent config file
|
|
provisioner "file" {
|
|
content = yamlencode({
|
|
node-name = module.agents[each.key].name
|
|
server = "https://${module.control_planes[0].private_ipv4_address}:6443"
|
|
token = random_password.k3s_token.result
|
|
kubelet-arg = "cloud-provider=external"
|
|
flannel-iface = "eth1"
|
|
node-ip = module.agents[each.key].private_ipv4_address
|
|
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.subnet
|
|
]
|
|
}
|