Add lite mode for less RAM/CPUs

I am on a device with 16GB RAM and unable
to run as configured. Thats difficult to work with
since I'm constantly stashing/popping changes to the
vagrantfile if I'm also trying to stay up to date
with the latest version.

This allows me to just set an env var and dev
as anyone else would.

Signed-off-by: John Schnake <[email protected]>

Author: johnSchnake

Vagrantfile

@@ -3,7 +3,8 @@
 require 'yaml'
 
 # Modify these in the variables.yaml file... they are described there in gory detail...
-settings = YAML.load_file 'sync/shared/variables.yaml'
+settingsFile = ENV["VAGRANT_VARIABLES"] || 'sync/shared/variables.yaml'
+settings = YAML.load_file settingsFile
 k8s_linux_registry=settings['k8s_linux_registry']
 k8s_linux_kubelet_deb=settings['k8s_linux_kubelet_deb']
 k8s_linux_apiserver=settings['k8s_linux_apiserver']
@@ -12,6 +13,12 @@ kubernetes_version_windows=settings['kubernetes_version_windows']
 overwrite_linux_bins = settings['overwrite_linux_bins']
 overwrite_windows_bins = settings['overwrite_windows_bins'] ? "-OverwriteBins" : ""
 
+linux_ram = settings['linux_ram']
+linux_cpus = settings['linux_cpus']
+windows_ram = settings['windows_ram']
+windows_cpus = settings['windows_cpus']
+
+
 Vagrant.configure(2) do |config|
 
   # LINUX Control Plane
@@ -24,8 +31,8 @@ Vagrant.configure(2) do |config|
     controlplane.vm.provider :virtualbox do |vb|
     controlplane.vm.synced_folder "./sync/shared", "/var/sync/shared"
     controlplane.vm.synced_folder "./sync/linux", "/var/sync/linux"
-      vb.memory = 8192
-      vb.cpus = 4
+      vb.memory = linux_ram
+      vb.cpus = linux_cpus
     end
     controlplane.vm.provision :shell, privileged: false, path: "sync/linux/controlplane.sh", args: "#{overwrite_linux_bins} #{k8s_linux_registry} #{k8s_linux_kubelet_deb} #{k8s_linux_apiserver} "
   end
@@ -39,8 +46,8 @@ Vagrant.configure(2) do |config|
     winw1.vm.synced_folder "./sync/shared", "C:\\sync\\shared"
     winw1.vm.synced_folder "./sync/windows", "C:\\sync\\windows"
     winw1.vm.provider :virtualbox do |vb|
-      vb.memory = 8192
-      vb.cpus = 4
+      vb.memory = windows_ram
+      vb.cpus = windows_cpus
       vb.gui = false
     end
 

sync/shared/kubejoin.ps1

@@ -1,3 +1,3 @@
 $env:path += ";C:\Program Files\containerd"
 [Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::Machine)
-kubeadm join 10.20.30.10:6443 --cri-socket "npipe:////./pipe/containerd-containerd" --token v3seop.mso4p1ibifs87ucp --discovery-token-ca-cert-hash sha256:2dea5736a807dc50b09c67c4c0da2f66f30111cd379af31b172b7aa2482a479a 
+kubeadm join 10.20.30.10:6443 --cri-socket "npipe:////./pipe/containerd-containerd" --token 9ehroj.ymupqnfk6lmsi9mc --discovery-token-ca-cert-hash sha256:6c339766d490a41c79977e77c60e9a022b9b8aceacfa4c817cc8dd6c0fbd3c1d 

sync/shared/variables-lite.yaml

@@ -0,0 +1,30 @@
+kubernetes_sha: "cb303e613a121a29364f75cc67d3d580833a7479"
+
+kubelet_path:  "./sync/windows/bin/kubelet.exe"
+kubeproxy_path:  "./sync/windows/bin/kube-proxy.exe"
+
+# LINUX KUBELET VERSION
+# LINUX KUBEADM VERSION
+# The RPM versions of the kubelet pulled down remotely
+# from https://apt.kubernetes.io/
+k8s_linux_registry: "gcr.io/k8s-staging-ci-images"
+k8s_linux_kubelet_deb:  "1.21.0"
+k8s_linux_apiserver: "ci/v1.22.0-alpha.3.31+a3abd06ad53b2f"
+
+# WINDOWS KUBELET VERSION
+# This is the -KubernetesVersion sent to
+# The PrepareNode.ps1 script, which is maintained
+# by sig-windows.  It determines what
+# WINDOWS KUBELET, KUBEADM we download.
+kubernetes_version_windows:  "1.21.0"
+
+### THIS WILL OVERWRITE THE KUBEADM and KUBELET with LOCAL SOURCE
+# TODO make these explicit about what they are overwriting
+# Seperate kubelet from kubeadm
+overwrite_linux_bins: false
+overwrite_windows_bins: false
+
+linux_ram: 2048
+linux_cpus: 2
+windows_ram: 4096
+windows_cpus: 2

sync/shared/variables.yaml

@@ -22,4 +22,9 @@ kubernetes_version_windows:  "1.21.0"
 # TODO make these explicit about what they are overwriting
 # Seperate kubelet from kubeadm
 overwrite_linux_bins: false
-overwrite_windows_bins: false
+overwrite_windows_bins: false
+
+linux_ram: 4096
+linux_cpus: 4
+windows_ram: 8162
+windows_cpus: 4