If you are using a released version of Kubernetes, you should refer to the docs that go with that version.
The latest 1.0.x release of this document can be found [here](http://releases.k8s.io/release-1.0/docs/user-guide/kubectl/kubectl_autoscale.md).Documentation for other releases can be found at releases.k8s.io.
Auto-scale a replication controller
Creates an autoscaler that automatically chooses and sets the number of pods that run in a kubernetes cluster.
Looks up a replication controller by name and creates an autoscaler that uses this replication controller as a reference. An autoscaler can automatically increase or decrease number of pods deployed within the system as needed.
kubectl autoscale (-f FILENAME | TYPE NAME | TYPE/NAME) [--min=MINPODS] --max=MAXPODS [--cpu-percent=CPU] [flags]
# Auto scale a replication controller "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
$ kubectl autoscale rc foo --min=2 --max=10
# Auto scale a replication controller "foo", with the number of pods between 1 to 5, target CPU utilization at 80%:
$ kubectl autoscale rc foo --max=5 --cpu-percent=80
--cpu-percent=-1: The target average CPU utilization (represented as a percent of requested CPU) over all the pods. If it's not specified or negative, the server will apply a default value.
--dry-run[=false]: If true, only print the object that would be sent, without creating it.
-f, --filename=[]: Filename, directory, or URL to a file identifying the resource to get from a server.
--generator="horizontalpodautoscaler/v1beta1": The name of the API generator to use. Currently there is only 1 generator.
--max=-1: The upper limit for the number of pods that can be set by the autoscaler. Required.
--min=-1: The lower limit for the number of pods that can be set by the autoscaler. If it's not specified or negative, the server will apply a default value.
--name="": The name for the newly created object. If not specified, the name of the input resource will be used.
--no-headers[=false]: When using the default output, don't print headers.
-o, --output="": Output format. One of: json|yaml|wide|name|go-template=...|go-template-file=...|jsonpath=...|jsonpath-file=... See golang template [http://golang.org/pkg/text/template/#pkg-overview] and jsonpath template [http://releases.k8s.io/HEAD/docs/user-guide/jsonpath.md].
--output-version="": Output the formatted object with the given version (default api-version).
--save-config[=false]: If true, the configuration of current object will be saved in its annotation. This is useful when you want to perform kubectl apply on this object in the future.
-a, --show-all[=false]: When printing, show all resources (default hide terminated pods.)
--sort-by="": If non-empty, sort list types using this field specification. The field specification is expressed as a JSONPath expression (e.g. 'ObjectMeta.Name'). The field in the API resource specified by this JSONPath expression must be an integer or a string.
--template="": Template string or path to template file to use when -o=go-template, -o=go-template-file. The template format is golang templates [http://golang.org/pkg/text/template/#pkg-overview].
--alsologtostderr[=false]: log to standard error as well as files
--api-version="": The API version to use when talking to the server
--certificate-authority="": Path to a cert. file for the certificate authority.
--client-certificate="": Path to a client key file for TLS.
--client-key="": Path to a client key file for TLS.
--cluster="": The name of the kubeconfig cluster to use
--context="": The name of the kubeconfig context to use
--insecure-skip-tls-verify[=false]: If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.
--kubeconfig="": Path to the kubeconfig file to use for CLI requests.
--log-backtrace-at=:0: when logging hits line file:N, emit a stack trace
--log-dir="": If non-empty, write log files in this directory
--log-flush-frequency=5s: Maximum number of seconds between log flushes
--logtostderr[=true]: log to standard error instead of files
--match-server-version[=false]: Require server version to match client version
--namespace="": If present, the namespace scope for this CLI request.
--password="": Password for basic authentication to the API server.
-s, --server="": The address and port of the Kubernetes API server
--stderrthreshold=2: logs at or above this threshold go to stderr
--token="": Bearer token for authentication to the API server.
--user="": The name of the kubeconfig user to use
--username="": Username for basic authentication to the API server.
--v=0: log level for V logs
--vmodule=: comma-separated list of pattern=N settings for file-filtered logging
- kubectl - kubectl controls the Kubernetes cluster manager