Bug fixes and E2E tests for PVC storage (#340)

Motivation

Address PVC follow-up work items outlined in #337 for PVC storage introduced in #267

Modifications

Code changes:
- Sort PVC mounts on serving runtime specs to avoid unstable repeated
runtime rollouts as Kubernetes treat two otherwise identical deployment
specs as different if the same set of volume mounts are in different order
- Don't add non-existent PVCs from predictor/ISVC when allowAnyPVC is
enabled as this would cause all serving pods for that runtime to stay in
- Pending state with unbound (pending) volumes
- Tolerate missing storage-config secret when allowAnyPVC is enabled
- Lint: fix "io/ioutil" deprecations

FVT changes:
- Add Storage test suite
- Add helper methods to add PVC to storage-config during FVT
- Allow for additional time in WaitForReadyDeployStatus but allow early abort on success
- Check if pod still running before gRPC/REST requests, reconnect if necessary
- Only choose "Ready" runtime pod for port-forwards
- Include ISVC tests in Predictor test suite to ensure "serial" execution of TLS tests

Resolves #337

Signed-off-by: Christian Kadner <ckadner@us.ibm.com>

.github/workflows/run-fvt.yml

@@ -1,4 +1,4 @@
-name: FVTs
+name: FVT
 
 on:
   pull_request:
@@ -71,15 +71,16 @@ jobs:
         run: |
           docker pull nvcr.io/nvidia/tritonserver:21.06.1-py3
           docker pull seldonio/mlserver:0.5.2
-          docker pull openvino/model_server:2022.1
+          docker pull openvino/model_server:2022.2
+          # docker pull pytorch/torchserve:0.6.0-cpu
           docker pull kserve/modelmesh-runtime-adapter
           docker pull kserve/rest-proxy
           docker pull kserve/modelmesh
       - name: Check installation
         run: |
           docker images
           kubectl get pods
-          kubectl get servingruntimes
+          kubectl get clusterservingruntimes
       - name: Run FVTs
         run: |
           go install github.com/onsi/ginkgo/v2/ginkgo

Makefile

@@ -47,7 +47,7 @@ test:
 
 # Run fvt tests. This requires an etcd, kubernetes connection, and model serving installation. Ginkgo CLI is used to run them in parallel
 fvt:
-	ginkgo -v -p -progress --fail-fast fvt/predictor fvt/scaleToZero --timeout=40m
+	ginkgo -v -procs=2 --progress --fail-fast fvt/predictor fvt/scaleToZero fvt/storage --timeout=50m
 
 # Command to regenerate the grpc go files from the proto files
 fvt-protoc:

config/dependencies/fvt.yaml

@@ -123,3 +123,120 @@ stringData:
       "default_bucket": "modelmesh-example-models",
       "region": "us-south"
     }
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: "models-pvc-1"
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: "models-pvc-2"
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: "models-pvc-3"
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: "pvc-init"
+spec:
+  template:
+    metadata:
+      name: "pvc-init-pod"
+    spec:
+      restartPolicy: OnFailure
+      containers:
+        - name: "copy-pod"
+          image: kserve/modelmesh-minio-examples:latest
+          securityContext:
+            runAsUser: 0
+            allowPrivilegeEscalation: false
+          command: ["/bin/sh", "-ex", "-c"]
+          args:
+            - echo copy model files ...;
+              whoami;
+              ls -al "${SRC_FOLDER}";
+              cp -r "${SRC_FOLDER}"/* "${DST_FOLDER_1}" &&
+              cp -r "${SRC_FOLDER}"/* "${DST_FOLDER_2}" &&
+              cp -r "${SRC_FOLDER}"/* "${DST_FOLDER_3}" &&
+              ls -al "${DST_FOLDER_1}" &&
+              ls -al "${DST_FOLDER_2}" &&
+              ls -al "${DST_FOLDER_3}" &&
+              echo done &&
+              exit 0;
+          env:
+            - name: SRC_FOLDER
+              value: "/data1/modelmesh-example-models"
+            - name: DST_FOLDER_1
+              value: "/mnt/pvc1"
+            - name: DST_FOLDER_2
+              value: "/mnt/pvc2"
+            - name: DST_FOLDER_3
+              value: "/mnt/pvc3"
+          volumeMounts:
+            - name: "pvc1"
+              mountPath: "/mnt/pvc1"
+            - name: "pvc2"
+              mountPath: "/mnt/pvc2"
+            - name: "pvc3"
+              mountPath: "/mnt/pvc3"
+      volumes:
+        - name: "pvc1"
+          persistentVolumeClaim:
+            claimName: "models-pvc-1"
+        - name: "pvc2"
+          persistentVolumeClaim:
+            claimName: "models-pvc-2"
+        - name: "pvc3"
+          persistentVolumeClaim:
+            claimName: "models-pvc-3"
+  backoffLimit: 4
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "pvc-reader"
+spec:
+  containers:
+    - name: main
+      image: ubuntu
+      command: ["/bin/sh", "-ec", "sleep 10000"]
+      volumeMounts:
+        - name: "pvc1"
+          mountPath: "/mnt/pvc1"
+        - name: "pvc2"
+          mountPath: "/mnt/pvc2"
+        - name: "pvc3"
+          mountPath: "/mnt/pvc3"
+  volumes:
+    - name: "pvc1"
+      persistentVolumeClaim:
+        claimName: "models-pvc-1"
+    - name: "pvc2"
+      persistentVolumeClaim:
+        claimName: "models-pvc-2"
+    - name: "pvc3"
+      persistentVolumeClaim:
+        claimName: "models-pvc-3"

config/dependencies/minio-storage-secret.yaml

@@ -1,5 +1,17 @@
+# Copyright 2021 IBM Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 apiVersion: v1
-
 kind: Secret
 metadata:
   name: storage-config

config/rbac/cluster-scope/role.yaml

@@ -33,6 +33,7 @@ rules:
       - ""
     resources:
       - endpoints
+      - persistentvolumeclaims
     verbs:
       - get
       - list

config/rbac/namespace-scope/role.yaml

@@ -33,6 +33,7 @@ rules:
       - ""
     resources:
       - endpoints
+      - persistentvolumeclaims
     verbs:
       - get
       - list

controllers/config/templating.go

@@ -16,7 +16,6 @@ package config
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"os"
 	"text/template"
 
@@ -43,9 +42,9 @@ func PathTemplateSource(path string, context interface{}) mf.Source {
 	return templateSource(f, context)
 }
 
-//A templating manifest source
+// A templating manifest source
 func templateSource(r io.Reader, context interface{}) mf.Source {
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		panic(err)
 	}

controllers/modelmesh/etcd.go

@@ -23,7 +23,7 @@ const (
 	kvStoreEnvVar = "KV_STORE"
 )
 
-//mimics base/patches/etcd.yaml
+// mimics base/patches/etcd.yaml
 func (m *Deployment) configureMMDeploymentForEtcdSecret(deployment *appsv1.Deployment) error {
 	EtcdSecretName := m.EtcdSecretName
 

controllers/modelmesh/runtime.go

@@ -69,6 +69,7 @@ func (m *Deployment) addVolumesToDeployment(deployment *appsv1.Deployment) error
 	}
 
 	// need to mount storage config for built-in adapters and the scenarios where StorageHelper is not disabled
+	// TODO: what about allowAnyPVC only use case without MinIO
 	if rts.BuiltInAdapter != nil || useStorageHelper(rts) {
 		storageVolume := corev1.Volume{
 			Name: ConfigStorageMount,

controllers/service_controller.go

@@ -11,19 +11,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-/*
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
 
 package controllers