kube-ops-view

Kubernetes Operational View provides a read-only system dashboard for multiple K8s clusters. Provides a common operational picture for multiple Kubernetes clusters.

Goal:

provide a common operational picture for multiple Kubernetes clusters.

• Render nodes and indicate their overall status ("Ready")
• Show node capacity and resource usage (CPU, memory)
• Render one "box" per CPU and fill up to sum of pod CPU requests/usage
• Render vertical bar for total memory and fill up to sum of pod memory requests/usage
• Render individual pods
• Indicate pod status by border line color (green: ready/running, yellow: pending, red: error etc)
• Show current CPU/memory usage (gathered from Heapster) by small vertical bars
• System pods ("kube-system" namespace) will be grouped together at the bottom
• Provide tooltip information for nodes and pods
• Animate pod creation and termination

What it is not:

• It's not a replacement for the Kubernetes Dashboard. The Kubernetes Dashboard is a general purpose UI which allows managing applications.
• It's not a monitoring solution. Use your preferred monitoring system to alert on production issues.
• It's not a operation management tool. Kubernetes Operational View does not allow interacting with the actual cluster.

Pod Status

• Each pod indicates its status by color and animation:
• Running and all containers ready: constant green
• Running and not all containers ready: flashing green
• Pending or ContainerCreating: flashing yellow
• ImagePullBackoff or CrashLoopBackoff: flashing red
• Succeeded (for jobs): blue

Tooltips

Various UI elements provide additional tooltip information when hovering over them with the mouse:

• Hovering over the title bar of a node box reveals the node’s labels.
• Hovering over the vertical resource bars will show the node’s capacity, sum of all resource requests and current resource usage.
• Hovering over a pod will show the pod’s labels, container status and resources.

Filtering Pods

• Kubernetes Operational View allows you to quickly find your running application pods.
• Typing characters will run the filter, i.e. non-matching pods will be greyed out.

You can filter by:

• name
• labels - when query includes =, e.g. env=prod

The pod filter is persisted in the location bar (#q=.. query parameter) which allows to conveniently send the filtered view to other users (e.g. for troubleshooting).

Sorting Pods

Pods can be sorted by different properties:

• pod name (this is the default)
• age (start time)
• memory usage (metric collected from Heapster)
• CPU usage (metric collected from Heapster)
• Sorting by memory or CPU allows finding the most resource hungry pod (per node).

Filtering Clusters

Clicking on a cluster handle (the top bar of the cluster box) will toggle between showing the single cluster alone and all clusters.