Add Kubernetes version check

Kubernetes version check added to have a minimum of 1.21
Strimzi kafka operator version set to 0.39.0 (It supports Kafka 3.5.0)

Issue-ID: NONRTRIC-993
Change-Id: I5de39606de7fb3f643cf44105f871262e973ff45
Signed-off-by: aravind.est <aravindhan.a@est.tech>

diff --git a/install/install-nrt.sh b/install/install-nrt.sh
index a30dcf3..8e6e032 100755 (executable)
--- a/install/install-nrt.sh
+++ b/install/install-nrt.sh
@@ -2,6 +2,7 @@
 
 #  ============LICENSE_START===============================================
 #  Copyright (C) 2023 Nordix Foundation. All rights reserved.
+#  Copyright (C) 2024 OpenInfra Foundation Europe. All rights reserved.
 #  ========================================================================
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -25,6 +26,9 @@
 
 # Constants
 SAMELINE="\033[0K\r"
+EXPECTEDMAJORKUBERNETESVERSION="1"
+EXPECTEDMINORKUBERNETESVERSION="21"
+STRIMZIKAFKAOPERATORVERSION="0.39.0"
 
 # Variables
 export KUBERNETESHOST=$(kube_get_controlplane_host)
@@ -34,9 +38,25 @@ if [ $? -ne 0 ]; then
     exit 1
 fi
 
+KUBERNETESVERSIONINFO=$(kubectl version --short 2>/dev/null || kubectl version 2>/dev/null)
+export KUBERNETESVERSION=$(echo $KUBERNETESVERSIONINFO | grep 'Server Version' | awk '{print $3}')
+if [ $? -ne 0 ]; then
+    echo $KUBERNETESVERSION
+    echo "Exiting"
+    exit 1
+fi
+
+KUBERNETESMAJORVERSION=$(echo ${KUBERNETESVERSION#v} | cut -d. -f1)
+KUBERNETESMINORVERSION=$(echo $KUBERNETESVERSION | cut -d. -f2)
 echo "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"
 echo "Kubernetes control plane host: $KUBERNETESHOST"
 echo "Host obtained from current kubectl context"
+echo "Kubernetes version : $KUBERNETESVERSION"
+if ((KUBERNETESMAJORVERSION < EXPECTEDMAJORKUBERNETESVERSION)) || ((KUBERNETESMINORVERSION < EXPECTEDMINORKUBERNETESVERSION)); then
+    echo "Required minimum Kubernetes version : $EXPECTEDMAJORKUBERNETESVERSION.$EXPECTEDMINORKUBERNETESVERSION"
+    echo "Aborting..."
+    exit 1
+fi
 echo "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"
 
 echo "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"
@@ -114,7 +134,8 @@ echo "##### Installing charts: strimzi and nrt-base-1"
 
 helm repo add strimzi https://strimzi.io/charts/
 
-helm install --wait strimzi-kafka-crds -n nonrtric strimzi/strimzi-kafka-operator
+echo "Installing Strimzi Kafka operator version: $STRIMZIKAFKAOPERATORVERSION"
+helm install --wait strimzi-kafka-crds -n nonrtric strimzi/strimzi-kafka-operator --version $STRIMZIKAFKAOPERATORVERSION
 
 
 cp opa-rules/bundle.tar.gz helm/nrt-base-1/charts/opa-rule-db/data