Merge branch 'feature/minikube-memory' into 'master'

give minikube 2g less than total system memory

See merge request all-staff/hashiqube!133

Author: Riaan Nolan

docker/docker.sh

@@ -16,6 +16,7 @@ echo -e '\e[38;5;198m'"CPU is $ARCH"
 sudo add-apt-repository "deb [arch=$ARCH] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
 sudo apt-get update
 # BUG: error reopening /dev/null https://bugs.launchpad.net/ubuntu/+source/docker.io/+bug/1950071 so we pin docker-ce=5:20.10.16~3-0~ubuntu-focal and containerd.io=1.5.11-1
+# BUG: https://github.com/containerd/containerd/issues/6203
 # INFO: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error reopening /dev/null inside container: open /dev/null: operation not permitted: unknown
 sudo DEBIAN_FRONTEND=noninteractive apt-get install --allow-downgrades --assume-yes docker-ce=5:20.10.9~3-0~ubuntu-focal docker-ce-cli containerd.io=1.5.11-1 docker-compose-plugin
 sudo usermod -aG docker vagrant

minikube/minikube.sh

@@ -69,7 +69,7 @@ function minikube-install() {
   # https://minikube.sigs.k8s.io/docs/commands/start/
   # https://unofficial-kubernetes.readthedocs.io/en/latest/admin/admission-controllers/
   # https://github.com/kubernetes/minikube/issues/604
-  sudo --preserve-env=PATH -u vagrant CHANGE_MINIKUBE_NONE_USER=true minikube start --driver=docker --force-systemd=true --insecure-registry="10.9.99.0/24" --cpus 4 --memory $(free -m | tr -s " " | grep Mem | cut -d " " -f2) --disk-size=2g --mount-string="/vagrant:/vagrant" --mount --extra-config=apiserver.enable-admission-plugins="DefaultStorageClass"
+  sudo --preserve-env=PATH -u vagrant CHANGE_MINIKUBE_NONE_USER=true minikube start --driver=docker --force-systemd=true --insecure-registry="10.9.99.0/24" --cpus=4 --memory=$(expr $(free -m | tr -s " " | grep Mem | cut -d " " -f2) - 2048) --disk-size=2g --mount-string="/vagrant:/vagrant" --mount --extra-config=apiserver.enable-admission-plugins="DefaultStorageClass"
   # --extra-config=apiserver.enable-admission-plugins="LimitRanger,NamespaceExists,NamespaceLifecycle,ResourceQuota,ServiceAccount,DefaultStorageClass,MutatingAdmissionWebhook"
   # "ResourceQuota,ServiceAccount,MutatingAdmissionWebhook,LimitRanger,NamespaceExists,NamespaceLifecycle," --kubelet.node-ip=10.9.99.10 --apiserver-name=0.0.0.0 --apiserver-ips=0.0.0.0