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kubectl scale
Synopsis
Set a new size for a deployment, replica set, replication controller, or stateful set.
Scale also allows users to specify one or more preconditions for the scale action.
If --current-replicas or --resource-version is specified, it is validated before the scale is attempted, and it is guaranteed that the precondition holds true when the scale is sent to the server.
kubectl scale [--resource-version=version] [--current-replicas=count] --replicas=COUNT (-f FILENAME | TYPE NAME)
Examples
# Scale a replica set named 'foo' to 3
kubectl scale --replicas=3 rs/foo
# Scale a resource identified by type and name specified in "foo.yaml" to 3
kubectl scale --replicas=3 -f foo.yaml
# If the deployment named mysql's current size is 2, scale mysql to 3
kubectl scale --current-replicas=2 --replicas=3 deployment/mysql
# Scale multiple replication controllers
kubectl scale --replicas=5 rc/example1 rc/example2 rc/example3
# Scale stateful set named 'web' to 3
kubectl scale --replicas=3 statefulset/web
Options
| --all | |
Select all resources in the namespace of the specified resource types |
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| --allow-missing-template-keys Default: true | |
If true, ignore any errors in templates when a field or map key is missing in the template. Only applies to golang and jsonpath output formats. |
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| --current-replicas int Default: -1 | |
Precondition for current size. Requires that the current size of the resource match this value in order to scale. -1 (default) for no condition. |
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| --dry-run string[="unchanged"] Default: "none" | |
Must be "none", "server", or "client". If client strategy, only print the object that would be sent, without sending it. If server strategy, submit server-side request without persisting the resource. |
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| -f, --filename strings | |
Filename, directory, or URL to files identifying the resource to set a new size |
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| -h, --help | |
help for scale |
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| -k, --kustomize string | |
Process the kustomization directory. This flag can't be used together with -f or -R. |
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| -o, --output string | |
Output format. One of: (json, yaml, name, go-template, go-template-file, template, templatefile, jsonpath, jsonpath-as-json, jsonpath-file). |
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| -R, --recursive | |
Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory. |
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| --replicas int | |
The new desired number of replicas. Required. |
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| --resource-version string | |
Precondition for resource version. Requires that the current resource version match this value in order to scale. |
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| -l, --selector string | |
Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2). Matching objects must satisfy all of the specified label constraints. |
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| --show-managed-fields | |
If true, keep the managedFields when printing objects in JSON or YAML format. |
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| --template string | |
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]. |
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| --timeout duration | |
The length of time to wait before giving up on a scale operation, zero means don't wait. Any other values should contain a corresponding time unit (e.g. 1s, 2m, 3h). |
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| --as string | |
Username to impersonate for the operation. User could be a regular user or a service account in a namespace. |
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| --as-group strings | |
Group to impersonate for the operation, this flag can be repeated to specify multiple groups. |
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| --as-uid string | |
UID to impersonate for the operation. |
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| --cache-dir string Default: "$HOME/.kube/cache" | |
Default cache directory |
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| --certificate-authority string | |
Path to a cert file for the certificate authority |
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| --client-certificate string | |
Path to a client certificate file for TLS |
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| --client-key string | |
Path to a client key file for TLS |
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| --cloud-provider-gce-l7lb-src-cidrs cidrs Default: 130.211.0.0/22,35.191.0.0/16 | |
CIDRs opened in GCE firewall for L7 LB traffic proxy & health checks |
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| --cloud-provider-gce-lb-src-cidrs cidrs Default: 130.211.0.0/22,209.85.152.0/22,209.85.204.0/22,35.191.0.0/16 | |
CIDRs opened in GCE firewall for L4 LB traffic proxy & health checks |
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| --cluster string | |
The name of the kubeconfig cluster to use |
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| --context string | |
The name of the kubeconfig context to use |
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| --default-not-ready-toleration-seconds int Default: 300 | |
Indicates the tolerationSeconds of the toleration for notReady:NoExecute that is added by default to every pod that does not already have such a toleration. |
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| --default-unreachable-toleration-seconds int Default: 300 | |
Indicates the tolerationSeconds of the toleration for unreachable:NoExecute that is added by default to every pod that does not already have such a toleration. |
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| --disable-compression | |
If true, opt-out of response compression for all requests to the server |
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| --insecure-skip-tls-verify | |
If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure |
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| --kubeconfig string | |
Path to the kubeconfig file to use for CLI requests. |
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| --match-server-version | |
Require server version to match client version |
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| -n, --namespace string | |
If present, the namespace scope for this CLI request |
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| --password string | |
Password for basic authentication to the API server |
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| --profile string Default: "none" | |
Name of profile to capture. One of (none|cpu|heap|goroutine|threadcreate|block|mutex) |
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| --profile-output string Default: "profile.pprof" | |
Name of the file to write the profile to |
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| --request-timeout string Default: "0" | |
The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests. |
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| -s, --server string | |
The address and port of the Kubernetes API server |
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| --storage-driver-buffer-duration duration Default: 1m0s | |
Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction |
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| --storage-driver-db string Default: "cadvisor" | |
database name |
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| --storage-driver-host string Default: "localhost:8086" | |
database host:port |
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| --storage-driver-password string Default: "root" | |
database password |
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| --storage-driver-secure | |
use secure connection with database |
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| --storage-driver-table string Default: "stats" | |
table name |
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| --storage-driver-user string Default: "root" | |
database username |
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| --tls-server-name string | |
Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used |
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| --token string | |
Bearer token for authentication to the API server |
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| --user string | |
The name of the kubeconfig user to use |
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| --username string | |
Username for basic authentication to the API server |
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| --version version[=true] | |
--version, --version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version |
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| --warnings-as-errors | |
Treat warnings received from the server as errors and exit with a non-zero exit code |
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See Also
- kubectl - kubectl controls the Kubernetes cluster manager
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