Lightweight Kubernetes
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ENV['VAGRANT_NO_PARALLEL'] = 'no'
NODE_ROLES = (ENV['E2E_NODE_ROLES'] ||
["server-0", "server-1", "server-2", "agent-0", "agent-1"])
NODE_BOXES = (ENV['E2E_NODE_BOXES'] ||
['generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004'])
RELEASE_CHANNEL = (ENV['E2E_RELEASE_CHANNEL'] || "latest")
RELEASE_VERSION = (ENV['E2E_RELEASE_VERSION'] || "")
EXTERNAL_DB = (ENV['E2E_EXTERNAL_DB'] || "etcd")
REGISTRY = (ENV['E2E_REGISTRY'] || "")
NODE_CPUS = (ENV['E2E_NODE_CPUS'] || 2).to_i
NODE_MEMORY = (ENV['E2E_NODE_MEMORY'] || 2048).to_i
# Virtualbox >= 6.1.28 require `/etc/vbox/network.conf` for expanded private networks
NETWORK_PREFIX = "10.10.10"
install_type = ""
def provision(vm, role, role_num, node_num)
vm.box = NODE_BOXES[node_num]
vm.hostname = role
# An expanded netmask is required to allow VM<-->VM communication, virtualbox defaults to /32
node_ip = "#{NETWORK_PREFIX}.#{100+node_num}"
vm.network "private_network", ip: node_ip, netmask: "255.255.255.0"
scripts_location = Dir.exists?("./scripts") ? "./scripts" : "../scripts"
vagrant_defaults = File.exists?("./vagrantdefaults.rb") ? "./vagrantdefaults.rb" : "../vagrantdefaults.rb"
load vagrant_defaults
defaultOSConfigure(vm)
if RELEASE_VERSION == "skip"
install_type = "INSTALL_K3S_SKIP_DOWNLOAD=true"
elsif !RELEASE_VERSION.empty?
install_type = "INSTALL_K3S_VERSION=#{RELEASE_VERSION}"
elsif RELEASE_CHANNEL == "commit"
vm.provision "shell", path: "../scripts/latest_commit.sh", args: ["master", "/tmp/k3s_commits"]
install_type = "INSTALL_K3S_COMMIT=$(head\ -n\ 1\ /tmp/k3s_commits)"
else
vm.provision "latest version", type: "shell",
inline: "curl -w '%{url_effective}' -L -s -S https://update.k3s.io/v1-release/channels/#{RELEASE_CHANNEL} -o /dev/null | sed -e 's|.*/||' &> /tmp/k3s_version"
install_type = "INSTALL_K3S_VERSION=$(cat\ /tmp/k3s_version)"
end
vm.provision "shell", inline: "ping -c 2 k3s.io"
db_type = getDBType(role, role_num, vm)
if !REGISTRY.empty?
vm.provision "Set private registry", type: "shell", path: scripts_location + "/registry.sh", args: [ "#{NETWORK_PREFIX}.1" ]
end
if role.include?("server") && role_num == 0
vm.provision 'k3s-primary-server', type: 'k3s', run: 'once' do |k3s|
k3s.args = "server "
k3s.config = <<~YAML
token: vagrant
node-external-ip: #{NETWORK_PREFIX}.100
flannel-iface: eth1
tls-san: #{NETWORK_PREFIX}.100.nip.io
#{db_type}
YAML
k3s.env = %W[K3S_KUBECONFIG_MODE=0644 #{install_type}]
k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
end
elsif role.include?("server") && role_num != 0
vm.provision 'k3s-secondary-server', type: 'k3s', run: 'once' do |k3s|
k3s.args = "server"
k3s.config = <<~YAML
server: "https://#{NETWORK_PREFIX}.100:6443"
token: vagrant
node-external-ip: #{node_ip}
flannel-iface: eth1
#{db_type}
YAML
k3s.env = %W[K3S_KUBECONFIG_MODE=0644 K3S_TOKEN=vagrant #{install_type}]
k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
end
end
if role.include?("agent")
vm.provision 'k3s-agent', type: 'k3s', run: 'once' do |k3s|
k3s.args = "agent"
k3s.config = <<~YAML
server: "https://#{NETWORK_PREFIX}.100:6443"
token: vagrant
node-external-ip: #{node_ip}
flannel-iface: eth1
#{db_type}
YAML
k3s.env = %W[K3S_KUBECONFIG_MODE=0644 #{install_type}]
k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
end
end
if vm.box.to_s.include?("microos")
vm.provision 'k3s-reload', type: 'reload', run: 'once'
if !EXTERNAL_DB.empty?
vm.provision "shell", inline: "docker start #{EXTERNAL_DB}"
end
end
end
def getDBType(role, role_num, vm)
if EXTERNAL_DB == "mysql"
if role.include?("server") && role_num == 0
dockerInstall(vm)
vm.provision "Start mysql", inline: "docker run -d -p 3306:3306 --name #{EXTERNAL_DB} -e MYSQL_ROOT_PASSWORD=e2e mysql:5.7"
vm.provision "shell", inline: "echo \"Wait for mysql to startup\"; sleep 10"
return "datastore-endpoint: 'mysql://root:e2e@tcp(#{NETWORK_PREFIX}.100:3306)/k3s'"
elsif role.include?("server") && role_num != 0
return "datastore-endpoint: 'mysql://root:e2e@tcp(#{NETWORK_PREFIX}.100:3306)/k3s'"
end
elsif EXTERNAL_DB == "postgres"
if role.include?("server") && role_num == 0
dockerInstall(vm)
vm.provision "Start postgres", inline: "docker run -d -p 5432:5432 --name #{EXTERNAL_DB} -e POSTGRES_PASSWORD=e2e postgres:14-alpine"
vm.provision "shell", inline: "echo \"Wait for postgres to startup\"; sleep 10"
return "datastore-endpoint: 'postgres://postgres:e2e@#{NETWORK_PREFIX}.100:5432/k3s?sslmode=disable'"
elsif role.include?("server") && role_num != 0
return "datastore-endpoint: 'postgres://postgres:e2e@#{NETWORK_PREFIX}.100:5432/k3s?sslmode=disable'"
end
elsif ( EXTERNAL_DB == "" || EXTERNAL_DB == "etcd" )
if role.include?("server") && role_num == 0
return "cluster-init: true"
end
elsif ( EXTERNAL_DB == "none" )
# Use internal sqlite
else
puts "Unknown EXTERNAL_DB: " + EXTERNAL_DB
abort
end
return ""
end
Vagrant.configure("2") do |config|
config.vagrant.plugins = ["vagrant-k3s", "vagrant-reload"]
# 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
if NODE_ROLES.kind_of?(String)
NODE_ROLES = NODE_ROLES.split(" ", -1)
end
if NODE_BOXES.kind_of?(String)
NODE_BOXES = NODE_BOXES.split(" ", -1)
end
# Must iterate on the index, vagrant does not understand iterating
# over the node roles themselves
NODE_ROLES.length.times do |i|
name = NODE_ROLES[i]
role_num = name.split("-", -1).pop.to_i
config.vm.define name do |node|
provision(node.vm, name, role_num, i)
end
end
end