Add script to inject linkerd into a ns

scripts/inject-linkerd.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+TOP="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+
+namespace=linkerd
+
+linkerd=$(which kubectl 2> /dev/null)
+
+if [ -z "$linkerd" ]; then
+    echo "linkerd cli is not available"
+    exit 1
+fi
+
+cd $TOP
+
+inject () {
+    for i in $@; do
+        kubectl get ns $i -o yaml | linkerd inject - | kubectl apply -f-
+        kc rollout restart daemonsets -n $i
+        kc rollout restart statefulsets -n $i
+        kc rollout restart deployments -n $i
+    done
+}
+
+if [ $# > 0 ]; then
+    inject $@
+else
+    inject $(kubectl get ns | sed "1d; /kube-system/d; s/ .*//")
+fi