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Add heapster, dashboard, and CLUO addons
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Dalton Hubble
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56
addons/cluo/update-agent.yaml
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56
addons/cluo/update-agent.yaml
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apiVersion: extensions/v1beta1
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kind: DaemonSet
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metadata:
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name: container-linux-update-agent
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namespace: kube-system
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spec:
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updateStrategy:
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type: RollingUpdate
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rollingUpdate:
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maxUnavailable: 1
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template:
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metadata:
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labels:
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app: container-linux-update-agent
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spec:
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containers:
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- name: update-agent
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image: quay.io/coreos/container-linux-update-operator:v0.3.1
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command:
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- "/bin/update-agent"
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volumeMounts:
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- mountPath: /var/run/dbus
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name: var-run-dbus
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- mountPath: /etc/coreos
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name: etc-coreos
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- mountPath: /usr/share/coreos
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name: usr-share-coreos
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- mountPath: /etc/os-release
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name: etc-os-release
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env:
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# read by update-agent as the node name to manage reboots for
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- name: UPDATE_AGENT_NODE
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valueFrom:
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fieldRef:
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fieldPath: spec.nodeName
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- name: POD_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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tolerations:
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- key: node-role.kubernetes.io/master
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operator: Exists
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effect: NoSchedule
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volumes:
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- name: var-run-dbus
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hostPath:
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path: /var/run/dbus
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- name: etc-coreos
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hostPath:
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path: /etc/coreos
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- name: usr-share-coreos
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hostPath:
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path: /usr/share/coreos
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- name: etc-os-release
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hostPath:
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path: /etc/os-release
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22
addons/cluo/update-operator.yaml
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22
addons/cluo/update-operator.yaml
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: container-linux-update-operator
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namespace: kube-system
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spec:
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replicas: 1
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template:
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metadata:
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labels:
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app: container-linux-update-operator
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spec:
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containers:
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- name: update-operator
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image: quay.io/coreos/container-linux-update-operator:v0.3.1
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command:
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- "/bin/update-operator"
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env:
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- name: POD_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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32
addons/dashboard/deployment.yaml
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32
addons/dashboard/deployment.yaml
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: kubernetes-dashboard
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namespace: kube-system
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spec:
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replicas: 1
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template:
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metadata:
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labels:
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name: kubernetes-dashboard
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phase: prod
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spec:
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containers:
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- name: kubernetes-dashboard
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image: gcr.io/google_containers/kubernetes-dashboard-amd64:v1.6.1
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ports:
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- name: http
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containerPort: 9090
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resources:
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limits:
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cpu: 100m
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memory: 300Mi
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requests:
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cpu: 100m
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memory: 100Mi
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livenessProbe:
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httpGet:
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path: /
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port: 9090
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initialDelaySeconds: 30
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timeoutSeconds: 30
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15
addons/dashboard/service.yaml
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15
addons/dashboard/service.yaml
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apiVersion: v1
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kind: Service
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metadata:
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name: kubernetes-dashboard
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namespace: kube-system
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spec:
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type: ClusterIP
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selector:
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name: kubernetes-dashboard
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phase: prod
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ports:
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- name: http
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protocol: TCP
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port: 80
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targetPort: 9090
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63
addons/heapster/deployment.yaml
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63
addons/heapster/deployment.yaml
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: heapster
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namespace: kube-system
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labels:
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k8s-app: heapster
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kubernetes.io/cluster-service: "true"
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version: v1.4.0
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spec:
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replicas: 1
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selector:
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matchLabels:
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k8s-app: heapster
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version: v1.4.0
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template:
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metadata:
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labels:
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k8s-app: heapster
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version: v1.4.0
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annotations:
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scheduler.alpha.kubernetes.io/critical-pod: ''
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spec:
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containers:
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- name: heapster
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image: gcr.io/google_containers/heapster-amd64:v1.4.0
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command:
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- /heapster
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- --source=kubernetes.summary_api:''
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livenessProbe:
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httpGet:
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path: /healthz
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port: 8082
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scheme: HTTP
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initialDelaySeconds: 180
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timeoutSeconds: 5
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- name: heapster-nanny
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image: gcr.io/google_containers/addon-resizer:2.0
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command:
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- /pod_nanny
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- --cpu=80m
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- --extra-cpu=0.5m
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- --memory=140Mi
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- --extra-memory=4Mi
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- --deployment=heapster-v1.4.0
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- --container=heapster
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- --poll-period=300000
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env:
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- name: MY_POD_NAME
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valueFrom:
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fieldRef:
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fieldPath: metadata.name
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- name: MY_POD_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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resources:
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limits:
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cpu: 50m
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memory: 90Mi
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requests:
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cpu: 50m
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memory: 90Mi
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15
addons/heapster/service.yaml
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15
addons/heapster/service.yaml
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apiVersion: v1
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kind: Service
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metadata:
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name: heapster
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namespace: kube-system
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labels:
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kubernetes.io/cluster-service: "true"
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kubernetes.io/name: "Heapster"
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spec:
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type: ClusterIP
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selector:
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k8s-app: heapster
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ports:
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- port: 80
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targetPort: 8082
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@ -1,6 +1,29 @@
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# Container Linux Update Operator
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More aptly named "Container Linux Reboot Coordinator".
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The [Container Linux Update Operator](https://github.com/coreos/container-linux-update-operator) (i.e. CLUO) coordinates reboots of auto-updating Container Linux nodes so that one node reboots at a time and nodes are drained before reboot. CLUO enables the auto-update behavior Container Linux clusters are known for, but does so in a Kubernetes native way.
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## Create
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Create the `update-operator` deployment and `update-agent` DaemonSet.
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```sh
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kubectl apply -f addons/cluo -R
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```
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## Usage
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`update-agent` runs as a DaemonSet and annotates a node when `update-engine.service` indiates an update has been installed and a reboot is needed. It also adds additional labels and annotations to nodes.
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```
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$ kubectl get nodes --show-labels
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...
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container-linux-update.v1.coreos.com/group=stable
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container-linux-update.v1.coreos.com/version=1465.6.0
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```
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`update-operator` ensures one node reboots at a time and that pods are drained prior to reboot.
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!!! note ""
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CLUO replaces `locksmithd` reboot coordination. The `update_engine` systemd unit on hosts still performs the Container Linux update check, download, and install to the inactive partition.
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!!! bug "In Progress"
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These docs haven't been completed yet.
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@ -1,4 +1,24 @@
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# Kubernetes Dashboard
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!!! bug "In Progress"
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These docs haven't been completed yet.
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The Kubernetes [Dashboard](https://github.com/kubernetes/dashboard) provides a web UI to manage a Kubernetes cluster for those who prefer an alternative to `kubectl`.
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## Create
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Create the dashboard deployment and service.
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```
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kubectl apply -f addons/dashboard -R
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```
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## Access
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Use `kubectl` to authenticate to the apiserver and create a local port forward to the remote port on the dashboard pod.
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```sh
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kubectl get pods -n kube-system
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kubectl port-forward POD [LOCAL_PORT:]REMOTE_PORT
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kubectl port-forward kubernetes-dashboard-id 9090 -n kube-system
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```
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!!! tip
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If you'd like to expose the Dashboard via Ingress and add authentication, use a suitable OAuth2 proxy sidecar and pick your favorite OAuth2 provider.
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@ -1,4 +1,19 @@
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# Heapster
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!!! bug "In Progress"
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These docs haven't been moved over yet.
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[Heapster](https://kubernetes.io/docs/user-guide/monitoring/) collects data from apiservers and kubelets and exposes it through a REST API. This API powers the `kubectl top` command and Kubernetes dashbard graphs.
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## Create
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```sh
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kubectl apply -f addons/heapster -R
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```
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## Usage
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Allow heapster to run for a few minutes, then check CPU and memory usage.
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```sh
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kubectl top node
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kubectl top pod
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```
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