Move Kubernetes cluster bootstrap partially to Ansible

README.md

@@ -160,30 +160,7 @@ Added some ARM64 workers by using Ubuntu 22.04 server on Raspberry Pi.
 
 After machines have booted up and you can reach them via SSH:
 
-```bash
-# Enable required kernel modules
-cat > /etc/modules << EOF
-overlay
-br_netfilter
-EOF
-cat /etc/modules | xargs -L 1 -t modprobe
-
-# Finetune sysctl:
-cat > /etc/sysctl.d/99-k8s.conf << EOF
-net.ipv4.conf.all.accept_redirects  = 0
-net.bridge.bridge-nf-call-iptables  = 1
-net.ipv4.ip_forward                 = 1
-net.bridge.bridge-nf-call-ip6tables = 1
-
-# Elasticsearch needs this
-vm.max_map_count                    = 524288
-
-# Bump inotify limits to make sure
-fs.inotify.max_user_instances=1280
-fs.inotify.max_user_watches=655360
-EOF
-sysctl --system
-
+```
 # Disable Ubuntu caching DNS resolver
 systemctl disable systemd-resolved.service
 systemctl stop systemd-resolved
@@ -206,39 +183,6 @@ apt-get install -yqq linux-image-generic
 apt-get remove -yq cloud-init linux-image-*-kvm
 ```
 
-Install packages:
-
-```bash
-OS=xUbuntu_22.04
-VERSION=1.25
-echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$OS/ /"| sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
-echo "deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/$VERSION/$OS/ /"|sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable:cri-o:$VERSION.list
-
-rm -fv /etc/apt/trusted.gpg
-
-curl -s https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$OS/Release.key | gpg --dearmor > /etc/apt/trusted.gpg.d/libcontainers-archive-keyring.gpg
-curl -s https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/$VERSION/$OS/Release.key | gpg --dearmor > /etc/apt/trusted.gpg.d/libcontainers-crio-archive-keyring.gpg
-curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | gpg --dearmor >  /etc/apt/trusted.gpg.d/packages-cloud-google.gpg
-
-echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list
-
-apt-get update
-apt-get install -yqq --allow-change-held-packages apt-transport-https curl cri-o cri-o-runc kubelet=1.25.12-00 kubectl=1.25.12-00 kubeadm=1.25.12-00 cri-o=1.25.3~0
-apt-mark hold kubelet kubeadm kubectl cri-o
-
-cat << \EOF > /etc/containers/registries.conf
-unqualified-search-registries = ["docker.io"]
-# To pull Docker images from a mirror uncomment following
-#[[registry]]
-#prefix = "docker.io"
-#location = "mirror.gcr.io"
-EOF
-sudo systemctl restart crio
-sudo systemctl daemon-reload
-sudo systemctl enable crio --now
-
-```
-
 On master:
 
 ```