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qos.md

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QoS

Kube-OVN supports dynamically configurations of Ingress and Egress traffic rate limiting for a single pod level and gateway level.

Pod QoS

Use the following annotations to specify QoS:

  • ovn.kubernetes.io/ingress_rate: Rate limit for Ingress traffic, unit: Mbit/s
  • ovn.kubernetes.io/egress_rate: Rate limit for Egress traffic, unit: Mbit/s

Example:

apiVersion: v1
kind: Pod
metadata:
  name: qos
  namespace: ls1
  annotations:
    ovn.kubernetes.io/ingress_rate: "3"
    ovn.kubernetes.io/egress_rate: "1"
spec:
  containers:
  - name: qos
    image: nginx:alpine

Gateway QoS

Kube-OVN will create an ovn0 interface on each host to route traffic from cluster pod network to external network. Kube-OVN control gateway QoS by modify the QoS config of ovn0 interface.

For a subnet with central gateway mode, only one node act as the gateway, so you can modify the node QoS annotation to control the QoS of the subnet to external network.

apiVersion: v1
kind: Node
metadata:
  annotations:
    ovn.kubernetes.io/ingress_rate: "3"
    ovn.kubernetes.io/egress_rate: "1"
  name: liumengxin-ovn1-192.168.16.44

You can also use this annotation to control the traffic from each node to external network through these annotations.