Self-hosted masters require many more pods per core

A single core master may run up to 25 pods before too long. This limit
was intentionally low in the early days where stability was an issue. At
this point it is no longer helpful and should be increased.

Author: smarterclayton

pkg/cmd/server/kubernetes/node/options/options.go

@@ -70,7 +70,7 @@ func ComputeKubeletFlags(startingArgs map[string][]string, options configapi.Nod
 	setIfUnset(args, "file-check-frequency", fmt.Sprintf("%ds", fileCheckInterval))
 	setIfUnset(args, "pod-infra-container-image", imageTemplate.ExpandOrDie("pod"))
 	setIfUnset(args, "max-pods", "250")
-	setIfUnset(args, "pods-per-core", "10")
+	setIfUnset(args, "pods-per-core", "40")
 	setIfUnset(args, "cgroup-driver", "systemd")
 	setIfUnset(args, "container-runtime-endpoint", options.DockerConfig.DockerShimSocket)
 	setIfUnset(args, "image-service-endpoint", options.DockerConfig.DockerShimSocket)