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自动扩缩容

本小节会介绍,如何为应用部署计划的一个待交付组件,配置自动扩缩容。我们使用运维特征里的 cpuscaler 来完成开发。

字段说明#

$ vela show cpuscaler
# Properties
+---------+---------------------------------------------------------------------------------+------+----------+---------+
| NAME | DESCRIPTION | TYPE | REQUIRED | DEFAULT |
+---------+---------------------------------------------------------------------------------+------+----------+---------+
| min | Specify the minimal number of replicas to which the autoscaler can scale down | int | true | 1 |
| max | Specify the maximum number of of replicas to which the autoscaler can scale up | int | true | 10 |
| cpuUtil | Specify the average cpu utilization, for example, 50 means the CPU usage is 50% | int | true | 50 |
+---------+---------------------------------------------------------------------------------+------+----------+---------+

如何使用#

# sample.yaml
apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
name: website
spec:
components:
- name: frontend # This is the component I want to deploy
type: webservice
properties:
image: nginx
traits:
- type: cpuscaler # Automatically scale the component by CPU usage after deployed
properties:
min: 1
max: 10
cpuPercent: 60
Last updated on by Wei (段少)