148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 10 ■ Configuring Compute Resources
Finding Node Capacity
A node’s capacity may be found by describing the node. For example:
kubectl describe node ip-10-0-0-50.ec2.internal
The Capacity field lists the node capacity in terms of CPU, memory, and number of pods. The
Allocatable field lists the allocable CPU, memory, and number of pods as shown in Figure 10-5.
Figure 10-5. Node capacity, total and allocatable
The CPU and Memory Requests and Limits including allocated resources are also listed but should
initially all be 0 if no pod is running on the node, as shown in Figure 10-6.
Figure 10-6. CPU and memory requests and limits
For the controller node, the node description should always list the allocated resources as 0 because the
node is not schedulable, as indicated by the NodeNotSchedulable in the Type column in Figure 10-7.
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