Introduce KO for fast development iteration (kubeflow#65)

* ko requires controller manifest to be separated out

* Add deploy-test makefile recipe for fast dev develop and deploy for testing

* Add image patch script for development overlay

* Consolidate to deploy-dev

.gitignore

@@ -22,3 +22,6 @@ bin
 *.swp
 *.swo
 *~
+
+# development overlay for image patch not to be checked in
+config/overlays/development/manager_image_patch.yaml

Makefile

@@ -27,6 +27,7 @@ deploy: manifests
 
 deploy-dev: manifests
 	kubectl apply -f config/crds
+	./image_patch_dev.sh
 	kustomize build config/overlays/development | kubectl apply -f -
 
 undeploy: manifests

config/manager/manager.yaml

@@ -1,26 +1,3 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  labels:
-    control-plane: kfserving-controller-manager
-    controller-tools.k8s.io: "1.0"
-  name: system
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: controller-manager-service
-  namespace: system
-  labels:
-    control-plane: kfserving-controller-manager
-    controller-tools.k8s.io: "1.0"
-spec:
-  selector:
-    control-plane: kfserving-controller-manager
-    controller-tools.k8s.io: "1.0"
-  ports:
-  - port: 443
----
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
@@ -44,7 +21,7 @@ spec:
       containers:
       - command:
         - /manager
-        image: controller:latest
+        image: github.com/kubeflow/kfserving/cmd/manager
         imagePullPolicy: Always
         name: manager
         env:

config/manager/service.yaml

@@ -0,0 +1,22 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    control-plane: kfserving-controller-manager
+    controller-tools.k8s.io: "1.0"
+  name: system
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: controller-manager-service
+  namespace: system
+  labels:
+    control-plane: kfserving-controller-manager
+    controller-tools.k8s.io: "1.0"
+spec:
+  selector:
+    control-plane: kfserving-controller-manager
+    controller-tools.k8s.io: "1.0"
+  ports:
+  - port: 443

image_patch_dev.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+IMG=$(ko resolve -f config/manager/manager.yaml | grep 'image:' | awk '{print $2}')
+cat > config/overlays/development/manager_image_patch.yaml << EOF 
+apiVersion: apps/v1
+kind: StatefulSet 
+metadata:
+  name: controller-manager
+spec:
+  template:
+    spec:
+      containers:
+        - name: manager
+          command:
+          image: ${IMG}
+EOF