From ec25e79c434a072603f3e278fbc266d509ba6d58 Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Tue, 4 Apr 2023 21:32:26 +0200
Subject: Initial commit

---
 description.txt       |  1 +
 etc/defaults          |  4 +++
 etc/os.d/linux-gentoo |  2 ++
 playbook.bash         | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 98 insertions(+)
 create mode 100644 description.txt
 create mode 100644 etc/defaults
 create mode 100644 etc/os.d/linux-gentoo
 create mode 100644 playbook.bash

diff --git a/description.txt b/description.txt
new file mode 100644
index 0000000..bf1fbab
--- /dev/null
+++ b/description.txt
@@ -0,0 +1 @@
+Playbook for a k3s node
diff --git a/etc/defaults b/etc/defaults
new file mode 100644
index 0000000..51e58ad
--- /dev/null
+++ b/etc/defaults
@@ -0,0 +1,4 @@
+pkg.curl=curl
+pkg.helm=helm
+pkg.k3s=k3s
+pkg.kubectl=kubectl
diff --git a/etc/os.d/linux-gentoo b/etc/os.d/linux-gentoo
new file mode 100644
index 0000000..4aaaabf
--- /dev/null
+++ b/etc/os.d/linux-gentoo
@@ -0,0 +1,2 @@
+pkg.k3s=sys-cluster/k3s
+pkg.helm=app-admin/helm
diff --git a/playbook.bash b/playbook.bash
new file mode 100644
index 0000000..a2a301b
--- /dev/null
+++ b/playbook.bash
@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+
+playbook_add() {
+	pkg install curl
+
+	case "${BASHTARD_PLATFORM[key]}" in
+		linux-debian|linux-ubuntu)
+			info "$BASHTARD_PLAYBOOK" "Configure package manager repositories"
+			curl https://baltocdn.com/helm/signing.asc | gpg --dearmor > /usr/share/keyrings/helm.gpg
+			printf "deb [arch=%s signed-by=%s] %s all main\n" \
+				"$(dpkg --print-architecture)" \
+				"/usr/share/keyrings/helm.gpg" \
+				"https://baltocdn.com/helm/stable/debian/" \
+				> "/etc/apt/sources.list.d/$BASHTARD_PLAYBOOK.list"
+			apt update
+			;;
+	esac
+
+	info "$BASHTARD_PLAYBOOK" "Installing additional programs"
+	pkg install helm
+
+	info "$BASHTARD_PLAYBOOK" "Writing config.yaml for k3s"
+	mkdir -pv -- /etc/rancher/k3s
+	cat <<-EOF > /etc/rancher/k3s/config.yaml
+	node-name: "${BASHTARD_PLATFORM[fqdn]}"
+	cluster-cidr: 172.19.0.0/16
+	service-cidr: 172.20.0.0/16
+	cluster-domain: cluster.local
+	EOF
+
+	info "$BASHTARD_PLAYBOOK" "Installing k3s"
+	curl -sfL https://get.k3s.io | sh -  # I hate this
+
+	notice "$BASHTARD_PLAYBOOK" "Creating data directories"
+	mkdir -pv -- "$(playbook_path "data")/manifests.d"
+	mkdir -pv -- "$(playbook_path "data")/helm.d"
+
+	notice "$BASHTARD_PLAYBOOK" "Waiting for node to become available"
+	{ grep -q -m 1 "${BASHTARD_PLATFORM[fqdn]}[[:space:]]\+Ready"; kill $!; } < <(k3s kubectl get node -w)
+
+	playbook_sync
+}
+
+playbook_sync() {
+	local data
+	local helm_cmd
+	local kubeconfig
+
+	data="$(playbook_path "data")"
+	kubeconfig="$(config "fs.etcdir")/rancher/k3s/k3s.yaml"
+
+	notice "$BASHTARD_PLAYBOOK/manifests" "Applying manifests.d"
+	kubectl --kubeconfig "$kubeconfig" apply --recursive --filename "$data/manifests.d"
+
+	notice "$BASHTARD_PLAYBOOK/helm" "Ensure all Helm repos exist"
+	while read -r repo
+	do
+		helm repo add "$repo" "$(config "$BASHTARD_PLAYBOOK.helm.repos.$repo.url")"
+	done < <(config_subkeys "$BASHTARD_PLAYBOOK.helm.repos")
+
+	notice "$BASHTARD_PLAYBOOK/helm" "Updating Helm repository contents"
+	helm repo update
+
+	notice "$BASHTARD_PLAYBOOK/helm" "Upgrading Helm charts"
+	while read -r app
+	do
+		helm_cmd=(
+			"helm" "upgrade"
+			"--install"
+			"--kubeconfig" "$kubeconfig"
+			"--timeout" "$(config "$BASHTARD_PLAYBOOK.helm.timeout" "30s")"
+			"--namespace" "$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.namespace" "default")"
+		)
+
+		# Add values
+		helm_cmd+=("--values" "$data/helm.d/$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.values")")
+
+		# Set which chart to upgrade
+		helm_cmd+=("$app")
+		helm_cmd+=("$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.repo")/$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.chart")")
+
+		notice "$BASHTARD_PLAYBOOK/helm/$app" "> ${helm_cmd[*]}"
+		${helm_cmd[@]}
+
+		unset helm_cmd
+	done < <(config_subkeys "$BASHTARD_PLAYBOOK.helm.apps")
+}
+
+playbook_del() {
+	/usr/local/bin/k3s-uninstall.sh
+}
-- 
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