Sync with Longhorn Manager

Manager commit:

commit 266f566783e47ce5e351f98491ea5b7b86a875d2
Author: Sheng Yang <sheng@yasker.org>
Date:   Tue Aug 21 11:48:22 2018 -0700

    Update images

    Manager: rancher/longhorn-manager:2c17d9e
    UI: rancher/longhorn-ui:72303d9

deploy/longhorn.yaml

@@ -178,7 +178,7 @@ spec:
     spec:
       containers:
       - name: longhorn-manager
-        image: rancher/longhorn-manager:v0.3-rc4
+        image: rancher/longhorn-manager:2c17d9e
         imagePullPolicy: Always
         securityContext:
           privileged: true
@@ -189,7 +189,7 @@ spec:
         - --engine-image
         - rancher/longhorn-engine:v0.3-rc4
         - --manager-image
-        - rancher/longhorn-manager:v0.3-rc4
+        - rancher/longhorn-manager:2c17d9e
         - --service-account
         - longhorn-service-account
         ports:
@@ -266,7 +266,7 @@ spec:
     spec:
       containers:
       - name: longhorn-ui
-        image: rancher/longhorn-ui:v0.3-rc4
+        image: rancher/longhorn-ui:72303d9
         ports:
         - containerPort: 8000
         env:
@@ -305,18 +305,18 @@ spec:
     spec:
       initContainers:
         - name: wait-longhorn-manager
-          image: rancher/longhorn-manager:v0.3-rc4
+          image: rancher/longhorn-manager:2c17d9e
           command: ['sh', '-c', 'while [ $(curl -m 1 -s -o /dev/null -w "%{http_code}" http://longhorn-backend:9500/v1) != "200" ]; do echo waiting; sleep 2; done']
       containers:
         - name: longhorn-driver-deployer
-          image: rancher/longhorn-manager:v0.3-rc4
+          image: rancher/longhorn-manager:2c17d9e
           imagePullPolicy: Always
           command:
           - longhorn-manager
           - -d
           - deploy-driver
           - --manager-image
-          - rancher/longhorn-manager:v0.3-rc4
+          - rancher/longhorn-manager:2c17d9e
           - --manager-url
           - http://longhorn-backend:9500/v1
           # manually choose "flexvolume" or "csi"

scripts/environment_check.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+
+dependencies() {
+  local targets=($@)
+  local allFound=true
+  for ((i=0; i<${#targets[@]}; i++)); do
+    local target=${targets[$i]}
+    if [ "$(which $target)" == "" ]; then
+      allFound=false
+      echo Not found: $target
+    fi
+  done
+  if [ "$allFound" == "false" ]; then
+    echo "Please install missing dependencies."
+    exit 2
+  fi
+}
+
+create_ds() {
+cat <<EOF > $TEMP_DIR/environment_check.yaml
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    app: longhorn-environment-check
+  name: longhorn-environment-check
+spec:
+  selector:
+    matchLabels:
+      app: longhorn-environment-check
+  template:
+    metadata:
+      labels:
+        app: longhorn-environment-check
+    spec:
+      containers:
+      - name: longhorn-environment-check
+        image: busybox
+        args: ["/bin/sh", "-c", "sleep 1000000000"]
+        volumeMounts:
+        - name: mountpoint
+          mountPath: /mnt/tmp
+          mountPropagation: Bidirectional
+        securityContext:
+          privileged: true
+      volumes:
+      - name: mountpoint
+        hostPath:
+            path: /mnt/tmp
+EOF
+  kubectl create -f $TEMP_DIR/environment_check.yaml
+}
+
+cleanup() {
+  kubectl delete -f $TEMP_DIR/environment_check.yaml
+  rm -rf $TEMP_DIR
+}
+
+wait_ds_ready() {
+  while true; do
+    local ds=$(kubectl get ds/longhorn-environment-check -o json)
+    local numberReady=$(echo $ds | jq .status.numberReady)
+    local desiredNumberScheduled=$(echo $ds | jq .status.desiredNumberScheduled)
+
+    if [ "$desiredNumberScheduled" == "$numberReady" ] && [ "$desiredNumberScheduled" != "0" ]; then
+      echo "all pods ready ($numberReady/$desiredNumberScheduled)"
+      return
+    fi
+
+    echo "waiting for pods to become ready ($numberReady/$desiredNumberScheduled)"
+    sleep 3
+  done
+}
+
+validate_pods() {
+  local allSupported=true
+  local pods=$(kubectl -l app=longhorn-environment-check get po -o json)
+  
+  for ((i=0; i<1; i++)); do
+    local pod=$(echo $pods | jq .items[$i])
+    local nodeName=$(echo $pod | jq -r .spec.nodeName)
+    local mountPropagation=$(echo $pod | jq -r '.spec.containers[0].volumeMounts[] | select(.name=="mountpoint") | .mountPropagation')
+
+    if [ "$mountPropagation" != "Bidirectional" ]; then
+      allSupported=false
+      echo "node $nodeName: MountPropagation DISABLED"
+    fi
+  done
+
+  if [ "$allSupported" != "true" ]; then
+    echo
+    echo "  MountPropagation is disabled on at least one node."
+    echo "  As a result, CSI Driver and Base Image aren't supported."
+    echo
+    exit 1
+  else
+    echo -e "\n  MountPropagation is enabled!\n"
+  fi
+}
+
+dependencies kubectl jq mktemp
+TEMP_DIR=$(mktemp -d)
+trap cleanup EXIT
+create_ds
+wait_ds_ready
+validate_pods
+exit 0