rest - 如何使用Apache Marathon REST API扩展Docker实例？

Question

是否可以使用 Mesosphere Marathon REST API扩大和缩小Docker容器/实例的数量？

端点 GET /deployments 似乎是查看下一个可能操作的唯一选择。
如何使用REST API扩展实例(以编程方式:可能使用curl脚本而不使用Marathon Web界面)？

Answer 1

您应将PUT与JSON一起使用，仅将字段"instances"与所需的实例计数(例如2)和应用程序ID(例如/foo)一起使用。

PUT <marathon-url>/v2/apps/foo

{ "id": "/foo", "instances": 2 }

注意: Marathon 1.4 deprecates PUT semantic.

A PUT on /v2/apps has a PATCH like semantic: All values that are not defined in the json, will not update existing values. This was always the default behaviour in Marathon versions. For backward compatibility, we will not change this behaviour, but let users opt in for a proper PUT. The next version of Marathon will use PATCH and PUT as two separate actions.