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63 lines
1.7 KiB
Markdown
63 lines
1.7 KiB
Markdown
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# CPU Manager Example
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This example flow uses a pre-built docker image based on
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[cpuset-visualizer](https://github.com/ConnorDoyle/cpuset-visualizer).
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Each container run here hosts an endpoint serving an up-to-the-second
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system representation generated by
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[`lstopo`](https://www.open-mpi.org/projects/hwloc).
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## Setup
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1. Start a local cluster with the static CPU manager policy enabled :
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```
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sudo PATH=$PATH \
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KUBELET_FLAGS="\
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--feature-gates=CPUManager=true \
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--cpu-manager-policy=static \
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--cpu-manager-reconcile-period=5s \
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--kube-reserved=cpu=500m" \
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./hack/local-up-cluster.sh
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```
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## Run pods
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The example pods are in the `/examples/cpu-manager` directory of the
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Kubernetes source tree. Your ability to run all of the example pods
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simultaneously depends on how many CPUs are available on the test system.
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The required CPUs for each example pod are listed below:
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```
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POD | CPUs
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------------------|---------
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be.yaml | >= 1 CPU
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shared.yaml | >= 1 CPU
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exclusive-1.yaml | >= 2 CPU
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exclusive-2.yaml | >= 3 CPU
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exclusive-3.yaml | >= 4 CPU
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exclusive-4.yaml | >= 5 CPU
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```
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### Example
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Run a pod with a single container in the shared pool, and another pod
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with a single container in an exclusive cpuset with one CPU.
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```
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$ kubectl create -f examples/cpu-manager/shared.yaml
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$ kubectl create -f examples/cpu-manager/exclusive-1.yaml
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```
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To list IP addresses of the pods running in the local cluster, do:
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```
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$ watch ./examples/cpu-manager/pod-ips
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exclusive-1 http://172.17.0.4
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shared http://172.17.0.3
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```
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#### Sample cpuset-visualizer output
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