From 2b0cc6a384c8ee3ea53cb114c3c175dddaedcec8 Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Mon, 4 Mar 2024 11:40:24 +0000
Subject: Add k8s-node playbook

---
 playbooks.d/k8s-node/description.txt |   1 +
 playbooks.d/k8s-node/etc/defaults    |   4 ++
 playbooks.d/k8s-node/playbook.bash   | 103 +++++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+)
 create mode 100644 playbooks.d/k8s-node/description.txt
 create mode 100644 playbooks.d/k8s-node/etc/defaults
 create mode 100644 playbooks.d/k8s-node/playbook.bash

diff --git a/playbooks.d/k8s-node/description.txt b/playbooks.d/k8s-node/description.txt
new file mode 100644
index 0000000..60693ef
--- /dev/null
+++ b/playbooks.d/k8s-node/description.txt
@@ -0,0 +1 @@
+Playbook for a Kubernetes master node
diff --git a/playbooks.d/k8s-node/etc/defaults b/playbooks.d/k8s-node/etc/defaults
new file mode 100644
index 0000000..9506887
--- /dev/null
+++ b/playbooks.d/k8s-node/etc/defaults
@@ -0,0 +1,4 @@
+pkg.containerd=containerd
+pkg.kubeadm=kubeadm
+pkg.kubectl=kubectl
+pkg.kubelet=kubelet
diff --git a/playbooks.d/k8s-node/playbook.bash b/playbooks.d/k8s-node/playbook.bash
new file mode 100644
index 0000000..e422452
--- /dev/null
+++ b/playbooks.d/k8s-node/playbook.bash
@@ -0,0 +1,103 @@
+#!/usr/bin/env bash
+
+BASHTARD_PLAYBOOK_VARS[$BASHTARD_PLAYBOOK.cert-hash]="required"
+BASHTARD_PLAYBOOK_VARS[$BASHTARD_PLAYBOOK.master.address]="required"
+BASHTARD_PLAYBOOK_VARS[$BASHTARD_PLAYBOOK.token]="required"
+
+playbook_add() {
+	local version
+
+	version="1.29"
+
+	case "${BASHTARD_PLATFORM[key]}" in
+		linux-debian_gnu_linux)
+			# Fetch the apt key
+			info "$BASHTARD_PLAYBOOK" "Adding apt repository"
+			mkdir -pv -m 755 -- /etc/apt/keyrings
+			curl -fsSL "https://pkgs.k8s.io/core:/stable:/v$version/deb/Release.key" \
+				| gpg --dearmor \
+				> /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+			printf "deb [signed-by=%s] %s /\n" \
+				"/etc/apt/keyrings/kubernetes-apt-keyring.gpg" \
+				"https://pkgs.k8s.io/core:/stable:/v$version/deb/" \
+				> /etc/apt/sources.list.d/kubernetes.list
+			apt update
+			;;
+	esac
+
+	pkg install containerd
+	pkg install kubeadm
+	pkg install kubectl
+	pkg install kubelet
+
+	info "$BASHTARD_PLAYBOOK" "Enabling forwarding"
+	cat <<-EOF > "$(config "fs.etcdir")/sysctl.d/kubernetes.conf"
+		net.bridge.bridge-nf-call-iptables  = 1
+		net.bridge.bridge-nf-call-ip6tables = 1
+		net.ipv4.ip_forward                 = 1
+		net.ipv6.conf.all.forwarding        = 1
+		EOF
+
+	sysctl --system
+
+	info "$BASHTARD_PLAYBOOK" "Enabling kernel modules"
+	cat <<-EOF > "$(config "fs.etcdir")/modules-load.d/kubernetes.conf"
+		br_netfilter
+		overlay
+		EOF
+
+	modprobe overlay
+	modprobe br_netfilter
+
+	if [[ "$(config "$BASHTARD_PLAYBOOK.node-ip" "")" != "" ]]
+	then
+		notice "$BASHTARD_PLAYBOOK" "Setting node ip in $(config "fs.etcdir")/default/kubelet"
+		cat <<-EOF > "$(config "fs.etcdir")/default/kubelet"
+			KUBELET_EXTRA_ARGS="--node-ip=$(config "$BASHTARD_PLAYBOOK.node-ip")"
+			EOF
+	fi
+
+	notice "$BASHTARD_PLAYBOOK" "Initialize kubeadm"
+	kubeadm join \
+		--discovery-token-ca-cert-hash "$(config "$BASHTARD_PLAYBOOK.cert-hash")" \
+		--node-name="${BASHTARD_PLATFORM[fqdn]}" \
+		--token "$(config "$BASHTARD_PLAYBOOK.token")" \
+		"$(config "$BASHTARD_PLAYBOOK.master.address"):$(config "$BASHTARD_PLAYBOOK.master.port" "6443")"
+}
+
+playbook_sync() {
+	:;
+}
+
+playbook_del() {
+	kubectl drain "${BASHTARD_PLATFORM[fqdn]}" \
+		--delete-emptydir-data \
+		--force \
+		--ignore-daemonsets
+
+	kubeadm reset
+	iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
+	ipvsadm -C
+	rm -fr -- \
+		"$(config "fs.etcdir")/modules-load.d/kubernetes.conf" \
+		"$(config "fs.etcdir")/sysctl.d/kubernetes.conf" \
+		"$(config "fs.etcdir")/cni/net.d" \
+		"$(config "fs.etcdir")/kubernetes" \
+		"/var/lib/etcd" \
+		"/var/lib/cni"
+
+	pkg uninstall kubectl
+	pkg uninstall kubeadm
+	pkg uninstall kubelet
+	pkg uninstall containerd
+
+	case "${BASHTARD_PLATFORM[key]}" in
+		linux-debian_gnu_linux)
+			# Fetch the apt key
+			info "$BASHTARD_PLAYBOOK" "Removing apt repository"
+			rm -fr -- \
+				/etc/apt/keyrings/kubernetes-apt-keyring.gpg \
+				/etc/apt/sources.list.d/kubernetes.list
+			;;
+	esac
+}
-- 
cgit v1.1