k3s-ansible/Vagrantfile

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# ENV['VAGRANT_NO_PARALLEL'] = 'no'
NODE_ROLES = ["server-0", "server-1", "server-2", "agent-0", "agent-1"]
NODE_BOXES = ['generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004']
NODE_CPUS = 2
NODE_MEMORY = 2048
# Virtualbox >= 6.1.28 require `/etc/vbox/network.conf` for expanded private networks
NETWORK_PREFIX = "10.10.10"
def provision(vm, role, node_num)
vm.box = NODE_BOXES[node_num]
vm.hostname = role
# We use a private network because the default IPs are dynamicly assigned
# during provisioning. This makes it impossible to know the server-0 IP when
# provisioning subsequent servers and agents. A private network allows us to
# assign static IPs to each node, and thus provide a known IP for the API endpoint.
node_ip = "#{NETWORK_PREFIX}.#{100+node_num}"
# An expanded netmask is required to allow VM<-->VM communication, virtualbox defaults to /32
vm.network "private_network", ip: node_ip, netmask: "255.255.255.0"
vm.provision "ansible", run: 'once' do |ansible|
ansible.compatibility_mode = "2.0"
ansible.playbook = "playbook/site.yml"
ansible.groups = {
"server" => NODE_ROLES.grep(/^server/),
"agent" => NODE_ROLES.grep(/^agent/),
"k3s_cluster:children" => ["server", "agent"],
}
ansible.extra_vars = {
k3s_version: "v1.26.9+k3s1",
api_endpoint: "#{NETWORK_PREFIX}.100",
token: "myvagrant",
# Required to use the private network configured above
extra_server_args: "--node-external-ip #{node_ip} --flannel-iface eth1",
extra_agent_args: "--node-external-ip #{node_ip} --flannel-iface eth1",
# Optional, left as reference for ruby-ansible syntax
# extra_service_envs: [ "NO_PROXY='localhost'" ],
# config_yaml: <<~YAML
# write-kubeconfig-mode: 644
# YAML
}
end
end
Vagrant.configure("2") do |config|
# Default provider is libvirt, virtualbox is only provided as a backup
config.vm.provider "libvirt" do |v|
v.cpus = NODE_CPUS
v.memory = NODE_MEMORY
end
config.vm.provider "virtualbox" do |v|
v.cpus = NODE_CPUS
v.memory = NODE_MEMORY
end
NODE_ROLES.each_with_index do |name, i|
config.vm.define name do |node|
provision(node.vm, name, i)
end
end
end