poc for node-fence - Githubissues

rootfs / node-fencing

Apache License 2.0

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poc for node-fence #12

Open bronhaim opened 6 years ago

bronhaim commented 6 years ago

simple controller (doesn't work yet with workqueue)
initialize new crd for fence objects with status field
polling nodefence object and start "executions"
execution parse the configuration for node, and start running "isolation" phase methods

under demo directory we have:

templates-fenceconfigs.yaml which includes configmaps for all fence method templates in cluster.
demo-host0-fenceconfigs which includes fence configuration for node name lago-kube-host0

running that and killing kubelet service in node lago-kube-host0 will trigger the controller to create nodefence object in the format

apiVersion: ha.k8s.io/v1
clean_resources: true
hostname: localhost   <-- here we update where execution ran (should modified to node name)
kind: NodeFence
node: lago-kube-host0
status: New   <-- this is updated by controller after getting execution output
step: Power-Management

deployment:

make container - produce an image that can be used by standalone-controller/deployment.yaml - this is pod definition to run the controller (open issue: use https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration instead of passing the config while creating the container)