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148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}
Chapter 9 ■ Scheduling Pods on NodesFigure 9-48. Setting another-annotation-key and removing nodeSelectorDelete the pod with-labels and create the pod again. The pod is scheduled on the node with the labelkubernetes.io/image-name: nginx2, as indicated by the NODE in the pod listing in Figure 9-49.Figure 9-49. The pod is scheduled on another-annotation-key valued nodeSetting preferredDuringSchedulingIgnoredDuringExecutionIn this section we will use the node affinity preferredDuringSchedulingIgnoredDuringExecution, whichis only a hint to the scheduler and not guaranteed. A slightly different set of node values is used for theexample, as shown in Figure 9-50.229
Chapter 9 ■ Scheduling Pods on NodesFigure 9-50. Listing nodes used for node affinity preferredDuringSchedulingIgnoredDuringExecutionexampleSet the label key kubernetes.io/image-name to nginx on one of the nodes and hello-world on anothernode as shown in Figure 9-51. The third node is kept unlabeled.Figure 9-51. Setting node labelsList the labels for each node as shown in Figure 9-52.Figure 9-52. Listing node labels230
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Chapter 9 ■ Scheduling Pods on Nodes
Figure 9-50. Listing nodes used for node affinity preferredDuringSchedulingIgnoredDuringExecution
example
Set the label key kubernetes.io/image-name to nginx on one of the nodes and hello-world on another
node as shown in Figure 9-51. The third node is kept unlabeled.
Figure 9-51. Setting node labels
List the labels for each node as shown in Figure 9-52.
Figure 9-52. Listing node labels
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