Custom Kured setup (#50)

* Create kured-1.2.0-custom-dockerhub.yml

* Update create-aks-cluster.sh

create-aks-cluster.sh

@@ -67,7 +67,7 @@ az aks get-credentials -n $AKS -g $RG --admin
 
 # Kured
 kuredVersion=1.2.0
-kubectl apply -f https://github.com/weaveworks/kured/releases/download/$kuredVersion/kured-$kuredVersion-dockerhub.yaml
+kubectl apply -f kured-$kuredVersion-custom-dockerhub.yaml
 
 # Network Policies
 # Example do deny all both ingress and egress on a specific namespace (default here), should be applied to any new namespace.

kured-1.2.0-custom-dockerhub.yml

@@ -0,0 +1,119 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: kured
+rules:
+# Allow kured to read spec.unschedulable
+# Allow kubectl to drain/uncordon
+#
+# NB: These permissions are tightly coupled to the bundled version of kubectl; the ones below
+# match https://github.com/kubernetes/kubernetes/blob/v1.12.1/pkg/kubectl/cmd/drain.go
+#
+- apiGroups: [""]
+  resources: ["nodes"]
+  verbs:     ["get", "patch"]
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs:     ["list","delete","get"]
+- apiGroups: ["extensions"]
+  resources: ["daemonsets"]
+  verbs:     ["get"]
+- apiGroups: [""]
+  resources: ["pods/eviction"]
+  verbs:     ["create"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: kured
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kured
+subjects:
+- kind: ServiceAccount
+  name: kured
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  namespace: kube-system
+  name: kured
+rules:
+# Allow kured to lock/unlock itself
+- apiGroups:     ["extensions"]
+  resources:     ["daemonsets"]
+  resourceNames: ["kured"]
+  verbs:         ["update"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  namespace: kube-system
+  name: kured
+subjects:
+- kind: ServiceAccount
+  namespace: kube-system
+  name: kured
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: kured
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kured
+  namespace: kube-system
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: kured            # Must match `--ds-name`
+  namespace: kube-system # Must match `--ds-namespace`
+spec:
+  selector:
+    matchLabels:
+      name: kured
+  updateStrategy:
+   type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        name: kured
+    spec:
+      serviceAccountName: kured
+      tolerations:
+        - key: node-role.kubernetes.io/master
+          effect: NoSchedule
+      hostPID: true # Facilitate entering the host mount namespace via init
+      restartPolicy: Always
+      containers:
+        - name: kured
+          image: docker.io/weaveworks/kured:1.2.0
+          imagePullPolicy: IfNotPresent
+          securityContext:
+            privileged: true # Give permission to nsenter /proc/1/ns/mnt
+          env:
+            # Pass in the name of the node on which this pod is scheduled
+            # for use with drain/uncordon operations and lock acquisition
+            - name: KURED_NODE_ID
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+          command:
+            - /usr/bin/kured
+#            - --alert-filter-regexp=^RebootRequired$
+#            - --blocking-pod-selector=runtime=long,cost=expensive
+#            - --blocking-pod-selector=name=temperamental
+#            - --blocking-pod-selector=...
+#            - --ds-name=kured
+#            - --ds-namespace=kube-system
+#            - --lock-annotation=weave.works/kured-node-lock
+#            - --period=1h
+#            - --prometheus-url=http://prometheus.monitoring.svc.cluster.local
+#            - --reboot-sentinel=/var/run/reboot-required
+#            - --slack-hook-url=https://hooks.slack.com/...
+#            - --slack-username=prod