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User Guide

Starting with descheduler release v0.10.0 container images are available in these container registries.

  • asia.gcr.io/k8s-artifacts-prod/descheduler/descheduler
  • eu.gcr.io/k8s-artifacts-prod/descheduler/descheduler
  • us.gcr.io/k8s-artifacts-prod/descheduler/descheduler

The examples directory has descheduler policy configuration examples.

The descheduler has many CLI options that can be used to override its default behavior.

descheduler --help
The descheduler evicts pods which may be bound to less desired nodes

Usage:
  descheduler [flags]
  descheduler [command]

Available Commands:
  help        Help about any command
  version     Version of descheduler

Flags:
      --add-dir-header                   If true, adds the file directory to the header
      --alsologtostderr                  log to standard error as well as files
      --descheduling-interval duration   Time interval between two consecutive descheduler executions. Setting this value instructs the descheduler to run in a continuous loop at the interval specified.
      --dry-run                          execute descheduler in dry run mode.
      --evict-local-storage-pods         Enables evicting pods using local storage by descheduler
  -h, --help                             help for descheduler
      --kubeconfig string                File with  kube configuration.
      --log-backtrace-at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log-dir string                   If non-empty, write log files in this directory
      --log-file string                  If non-empty, use this log file
      --log-file-max-size uint           Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
      --log-flush-frequency duration     Maximum number of seconds between log flushes (default 5s)
      --logtostderr                      log to standard error instead of files (default true)
      --max-pods-to-evict-per-node int   Limits the maximum number of pods to be evicted per node by descheduler
      --node-selector string             Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)
      --policy-config-file string        File with descheduler policy configuration.
      --skip-headers                     If true, avoid header prefixes in the log messages
      --skip-log-headers                 If true, avoid headers when opening log files
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
  -v, --v Level                          number for the log level verbosity
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging

Use "descheduler [command] --help" for more information about a command.