I'm trying to scale up/down some deployments over HTTP and also list the deployments on my cluster. I'm able to list pods, but can't figure out the deployments piece.
http://localhost:8080/api/v1/namespaces/default/deployments
{
"kind": "Status",
"apiVersion": "v1",
"metadata": {},
"status": "Failure",
"message": "the server could not find the requested resource",
"reason": "NotFound",
"details": {},
"code": 404
}
Deployments are in the apps/v1 namespace, and you need to include apps in the URL. The API documentation for the "list deployments" endpoint gives the URL as
GET /apis/apps/v1/namespaces/{namespace}/deploymentsYou can use the normal read-modify-write sequence to change the replicas: field in a deployment spec to scale it.
There is also a dedicated endpoint to scale deployments, though it's slightly underdocumented. Manage replicas count for deployment using Kubernetes API suggests reading and patching the scale resource, or there is an example with a minimal JSON payload.