add script to toggle istio

update-istio-injection.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -e
+from=$1
+to=$2
+
+if [ -z "$from" ] || [ -z "$to" ]; then
+	echo 'pass 2 positional parameters - $from and $to'
+	exit 1
+fi
+
+commands=()
+# Update terraform modules
+for file in $(grep -rni "\"istio-injection\" : \"$from\"" . | grep -v '#' | awk '{print $1}' | cut -d':' -f1); do
+	echo $file
+	sed -i "s/istio-injection\" : \"$from\"/istio-injection\" : \"$to\"/" $file
+
+	ns=$(echo $file | cut -d'/' -f 4)
+	commands+=("kubectl -n $ns get deployments --no-headers | awk '{print \$1}' | xargs kubectl -n $ns rollout restart deployment")
+done
+
+# Apply changes
+terraform apply -auto-approve
+
+# Restart deployments
+for cmd in "${commands[@]}"; do
+	echo $cmd
+	bash -c "$cmd"
+done