From 3ce7aba5b1f24a739dffd5fa4ef49938f89dd974 Mon Sep 17 00:00:00 2001
From: sandervanvugt <mail@sandervanvugt.nl>
Date: Mon, 11 Mar 2024 11:48:34 +0100
Subject: [PATCH] message

---
 setup-kubetools-previousversion.sh | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/setup-kubetools-previousversion.sh b/setup-kubetools-previousversion.sh
index 13e0001..10f0251 100755
--- a/setup-kubetools-previousversion.sh
+++ b/setup-kubetools-previousversion.sh
@@ -5,16 +5,27 @@
 # this script supports Ubuntu 20.04 LTS and later only
 # run this script with sudo
 
-if ! [ $USER = root ]
+if ! [ -f /tmp/container.txt ]
 then
-	echo run this script with sudo
-	exit 3
+	echo run ./setup-container.sh before running this script
+	exit 4
 fi
 
 # setting MYOS variable
 MYOS=$(hostnamectl | awk '/Operating/ { print $3 }')
 OSVERSION=$(hostnamectl | awk '/Operating/ { print $4 }')
 
+# detecting latest Kubernetes version
+KUBEVERSION=$(curl -s https://api.github.com/repos/kubernetes/kubernetes/releases/latest | jq -r '.tag_name')
+KUBEVERSION=${KUBEVERSION%.*}
+
+# setting previous version
+VERSION=${KUBEVERSION#*.}
+PREVIOUSVERSION=$(( VERSION - 1 ))
+echo $PREVIOUSVERSION
+exit
+
+
 if [ $MYOS = "Ubuntu" ]
 then
 	echo RUNNING UBUNTU CONFIG
@@ -23,23 +34,24 @@ then
 EOF
 	
 	sudo apt-get update && sudo apt-get install -y apt-transport-https curl
-	curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
-	echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
+	curl -fsSL https://pkgs.k8s.io/core:/stable:/${KUBEVERSION}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+	echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/${KUBEVERSION}/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
+sleep 2
 
 	sudo apt-get update
 	sudo apt-get install -y kubelet kubeadm kubectl
 	sudo apt-mark hold kubelet kubeadm kubectl
-	swapoff -a
+	sudo swapoff -a
 	
-	sed -i 's/\/swap/#\/swap/' /etc/fstab
+	sudo sed -i 's/\/swap/#\/swap/' /etc/fstab
 fi
 
 # Set iptables bridging
-cat <<EOF >  /etc/sysctl.d/k8s.conf
+sudo cat <<EOF >  /etc/sysctl.d/k8s.conf
 net.bridge.bridge-nf-call-ip6tables = 1
 net.bridge.bridge-nf-call-iptables = 1
 EOF
-sysctl --system
+sudo sysctl --system
 
 sudo crictl config --set \
     runtime-endpoint=unix:///run/containerd/containerd.sock