https://github.com/mirantis/sriov-scheduler
https://github.com/mirantis/sriov-scheduler
Last synced: 2 months ago
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- Host: GitHub
- URL: https://github.com/mirantis/sriov-scheduler
- Owner: Mirantis
- Created: 2017-11-02T09:11:18.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2020-02-26T12:18:22.000Z (about 5 years ago)
- Last Synced: 2025-01-17T12:17:45.373Z (4 months ago)
- Language: Go
- Size: 43.9 KB
- Stars: 1
- Watchers: 4
- Forks: 3
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
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README
Sriov scheduler extension
=========================
## Demo
[](https://asciinema.org/a/143079)
## Get started
This application does 2 things:
- discovers total number of sriov vfs on every node in the cluster
- prevents scheduler from binding pods on a nodes that doesn't have vfs left
In order to deploy applicaton you need to follow next instructions.
Run a disvery tool on every node in the cluster:
```
kubectl create -f tools/discovery.yaml
```
It will deploy daemonset with golang script that will read totalvfs number
on each node and report them to kubernetes. Reported information will be available on a nodes:
```
status:
allocatable:
cpu: "8"
memory: 32766568Ki
pods: "110"
totalvfs: "1"
```
Next deploy scheduler extension itself:
```
kubectl create -f tools/extender.yaml
```
It will create deployment with http server and a service for it.
Important to note that all pods without requested sriov network will be ignored,
in future it will be easy to add any other selection algorithm:
```
kind: Pod
metadata:
annotations:
networks: sriov
```
And as a last step we need to change kubernetes scheduler configuration.
On my environment kubernetes scheduler is self-hosted and I will be using
configmap as a policy configuration source.
Create configmap "scheduler-policy" in a kube-system namespace:
```
kubectl create configmap scheduler-policy -n kube-system --from-file=policy.cfg=tools/scheduler.json
```
And add policy-configmap option to kubernetes scheduler:
```
spec:
containers:
- command:
- /hyperkube
- scheduler
- --address=127.0.0.1
- --leader-elect=true
- --kubeconfig=/etc/kubernetes/scheduler.conf
- --policy-configmap
- scheduler-policy
```