kube-scheduler's config file and policy config file (policy.cfg) (v1.11.1)

kube-scheduler-configuration.yaml

# This config scheme is based on Kubernetes v.1.11.1
#   ref: https://github.com/kubernetes/kubernetes/blob/v1.11.1/pkg/apis/componentconfig/v1alpha1/types.go#L75-L112
# NOTE: You can dump default config yaml by this command:
# $ docker run -v $(pwd):/host gcr.io/google_containers/hyperkube-amd64:v1.11.1 kube-scheduler --write-config-to /host/config.yaml

# TypeMeta
apiVersion: componentconfig/v1alpha1
kind: KubeSchedulerConfiguration

# SchedulerName is name of the scheduler, used to select which pods
# will be processed by this scheduler, based on pod's "spec.SchedulerName".
schedulerName: default-scheduler

# AlgorithmSource specifies the scheduler algorithm source. 
algorithmSource:
  # 1. Provider: name based algrithm provider
  #    defined in https://github.com/kubernetes/kubernetes/blob/v1.11.1/pkg/scheduler/algorithmprovider/defaults/defaults.go#L215-L222
  provider: DefaultProvider # or ClusterAutoscalerProvider

  # # 2. Policy: Policy based algorithm provider source
  # #   - File:  file based source
  # policy:
  #   file:
  #     path: /path/to/policy-file

  # #   - ConfigMap: configMap based sourde
  # policy:
  #   configMap:
  #     namespace: kube-system
  #     name: schduler-policy

# RequiredDuringScheduling affinity is not symmetric, but there is an implicit 
# PreferredDuringScheduling affinity rule corresponding to every RequiredDuringScheduling 
# affinity rule.  HardPodAffinitySymmetricWeight represents the weight of implicit
# PreferredDuringScheduling affinity rule, in the range 0-100.
hardPodAffinitySymmetricWeight: 1

# LeaderElection defines the configuration of leader election client.
leaderElection:
  leaderElect: true
  leaseDuration: 15s
  lockObjectName: kube-scheduler
  lockObjectNamespace: kube-system
  renewDeadline: 10s
  resourceLock: endpoints
  retryPeriod: 2s

# ClientConnection specifies the kubeconfig file and client connection
# settings for the proxy server to use when communicating with the apiserver.
clientConnection:
  # kubeConfigFile is the path to a kubeconfig file. empty for using in cluster configs
  kubeconfig: /path/to/kubeconfig
  # default value of 'application/json'
  acceptContentTypes: ""
  burst: 100
  contentType: application/vnd.kubernetes.protobuf
  qps: 50

# HealthzBindAddress is the IP address and port for the health check server to serve on,
# defaulting to 0.0.0.0:10251
healthzBindAddress: 0.0.0.0:10251

# MetricsBindAddress is the IP address and port for the metrics server to
# serve on, defaulting to 0.0.0.0:10251.
metricsBindAddress: 0.0.0.0:10251

# EnableProfiling enables profiling via web interface on /debug/pprof
# handler. Profiling handlers will be handled by metrics server.
enableProfiling: false

# EnableContentionProfiling enables lock contention profiling, if
# EnableProfiling is true.
enableContentionProfiling: false

# Indicate the "all topologies" set for empty topologyKey when it's used for PreferredDuringScheduling pod anti-affinity.
failureDomains: kubernetes.io/hostname,failure-domain.beta.kubernetes.io/zone,failure-domain.beta.kubernetes.io/region

# DisablePreemption disables the pod preemption feature.
disablePreemption: false

policy.cfg

#
# PLEASE DELETE COMMENTS WHEN YOU USE
# 
# 'policy.cfg' MUST be json
# This schema is based on Kubernetes v1.11.1
# ref: https://github.com/kubernetes/kubernetes/blob/v1.11.1/pkg/scheduler/api/v1/types.go#L31-L50
{
  # TypeMeta
  "kind" : "Policy",
  "apiVersion" : "v1",

  # Holds the information to configure the fit predicate functions
  # predicates list: https://github.com/kubernetes/kubernetes/blob/v1.11.1/pkg/scheduler/algorithm/predicates/predicates.go#L52-L94
  "predicates" : [
    {"name" : "PodFitsHostPorts"},
    {"name" : "PodFitsResources"},
    {"name" : "NoDiskConflict"},
    {"name" : "MatchNodeSelector"},
    {"name" : "HostName"}
  ],

  # Holds the information to configure the priority functions
  # priorities list: https://github.com/kubernetes/kubernetes/tree/v1.11.1/pkg/scheduler/algorithm/priorities
  "priorities" : [
    {"name" : "LeastRequestedPriority", "weight" : 1},
    {"name" : "BalancedResourceAllocation", "weight" : 1},
    {"name" : "ServiceSpreadingPriority", "weight" : 1},
    {"name" : "EqualPriority", "weight" : 1}
  ],

  # Holds the information to communicate with the extender(s)
  "extenders" : [{
    # URLPrefix at which the extender is available
    "urlPrefix": "http://localhost/scheduler",
    
    # Verb for the filter call, empty if not supported. 
    # This verb is appended to the URLPrefix when issuing the filter call to extender.
    "filterVerb": "predicates/always_true",

    # Verb for the preempt call, empty if not supported. 
    # This verb is appended to the URLPrefix when issuing the preempt call to extender.
    "preemptVerb": "/preemption",

    # Verb for the prioritize call, empty if not supported. 
    # This verb is appended to the URLPrefix when issuing the prioritize call to extender.
    "prioritizeVerb": "priorities/zero_score",

    # The numeric multiplier for the node scores that the prioritize call generates.
    # The weight should be a positive integer
    "weight": 1,

    # Verb for the bind call, empty if not supported. 
    # This verb is appended to the URLPrefix when issuing the bind call to extender.
    # If this method is implemented by the extender, it is the extender's responsibility 
    # to bind the pod to apiserver. Only one extender can implement this function.
    "bindVerb": "",

    # EnableHTTPS specifies whether https should be used to communicate with the extender
    "enableHttps": false,

    # TLSConfig specifies the transport layer security config
    "tlsConfig": { ... }

    # HTTPTimeout specifies the timeout duration for a call to the extender. 
    # Filter timeout fails the scheduling of the pod. 
    # Prioritize timeout is ignored, k8s/other extenders priorities are used to select the node.
    "httpTimeout": "1000000000"

    # NodeCacheCapable specifies that the extender is capable of caching node information,
    # so the scheduler should only send minimal information about the eligible nodes
    # assuming that the extender already cached full details of all nodes in the cluster
    "nodeCacheCapable": false,

    # ManagedResources is a list of extended resources that are managed by
    # this extender.
    # - A pod will be sent to the extender on the Filter, Prioritize and Bind
    #   (if the extender is the binder) phases iff the pod requests at least
    #   one of the extended resources in this list. If empty or unspecified,
    #   all pods will be sent to this extender.
    # - If IgnoredByScheduler is set to true for a resource, kube-scheduler
    #   will skip checking the resource in predicates.
    "managedResources": [{
        # the extended resource name
        "name": "extended-resource-name",
        # indicates whether kube-scheduler should ignore this
        # resource when applying predicates
        "ignoredByScheduler": false
    }],
    # specifies if the extender is ignorable, i.e. scheduling should not
	# fail when the extender returns an error or is not reachable.
    "ignorable": false,
  }],

  # RequiredDuringScheduling affinity is not symmetric, but there is 
  # an implicit PreferredDuringScheduling affinity rule corresponding to 
  # every RequiredDuringScheduling affinity rule.
  # HardPodAffinitySymmetricWeight represents the weight of implicit 
  # PreferredDuringScheduling affinity rule, in the range 1-100.
  "hardPodAffinitySymmetricWeight" : 10,

  # When AlwaysCheckAllPredicates is set to true, scheduler checks all
  # the configured predicates even after one or more of them fails.
  # When the flag is set to false, scheduler skips checking the rest
  # of the predicates after it finds one predicate that failed.
  "alwaysCheckAllPredicates": false
}