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John Mulhausen
2016-03-07 16:51:25 +00:00
parent 0a20f23ad9
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docs/user-guide/kubectl/kubectl_expose.md
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---
layout: docwithnav
title: "kubectl expose"
---
<!-- BEGIN MUNGE: UNVERSIONED_WARNING -->
@@ -14,75 +10,77 @@ Take a replication controller, service or pod and expose it as a new Kubernetes
### Synopsis
Take a replication controller, service or pod and expose it as a new Kubernetes Service.
Take a replication controller, service, replica set or pod and expose it as a new Kubernetes service.
Looks up a replication controller, service or pod by name and uses the selector for that resource as the
selector for a new Service on the specified port. If no labels are specified, the new service will
re-use the labels from the resource it exposes.
Looks up a replication controller, service, replica set or pod by name and uses the selector for that
resource as the selector for a new service on the specified port. A replica set will be exposed as a
service only if it's selector is convertible to a selector that service supports, i.e. when the
replica set selector contains only the matchLabels component. Note that if no port is specified
via --port and the exposed resource has multiple ports, all will be re-used by the new service. Also
if no labels are specified, the new service will re-use the labels from the resource it exposes.
```
{% raw %}
kubectl expose (-f FILENAME | TYPE NAME) [--port=port] [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [----external-ip=external-ip-of-service] [--type=type]
{% endraw %}
kubectl expose (-f FILENAME | TYPE NAME) [--port=port] [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [--external-ip=external-ip-of-service] [--type=type]
```
### Examples
```
{% raw %}
# Create a service for a replicated nginx, which serves on port 80 and connects to the containers on port 8000.
$ kubectl expose rc nginx --port=80 --target-port=8000
kubectl expose rc nginx --port=80 --target-port=8000
# Create a service for a replication controller identified by type and name specified in "nginx-controller.yaml", which serves on port 80 and connects to the containers on port 8000.
$ kubectl expose -f nginx-controller.yaml --port=80 --target-port=8000
kubectl expose -f nginx-controller.yaml --port=80 --target-port=8000
# Create a service for a pod valid-pod, which serves on port 444 with the name "frontend"
$ kubectl expose pod valid-pod --port=444 --name=frontend
kubectl expose pod valid-pod --port=444 --name=frontend
# Create a second service based on the above service, exposing the container port 8443 as port 443 with the name "nginx-https"
$ kubectl expose service nginx --port=443 --target-port=8443 --name=nginx-https
kubectl expose service nginx --port=443 --target-port=8443 --name=nginx-https
# Create a service for a replicated streaming application on port 4100 balancing UDP traffic and named 'video-stream'.
$ kubectl expose rc streamer --port=4100 --protocol=udp --name=video-stream
{% endraw %}
kubectl expose rc streamer --port=4100 --protocol=udp --name=video-stream
# Create a service for a replicated nginx using replica set, which serves on port 80 and connects to the containers on port 8000.
kubectl expose rs nginx --port=80 --target-port=8000
```
### Options
```
{% raw %}
--container-port="": Synonym for --target-port
--dry-run[=false]: If true, only print the object that would be sent, without creating it.
--external-ip="": External IP address to set for the service. The service can be accessed by this IP in addition to its generated service IP.
--external-ip="": Additional external IP address (not managed by Kubernetes) to accept for the service. If this IP is routed to a node, the service can be accessed by this IP in addition to its generated service IP.
-f, --filename=[]: Filename, directory, or URL to a file identifying the resource to expose a service
--generator="service/v2": The name of the API generator to use. There are 2 generators: 'service/v1' and 'service/v2'. The only difference between them is that service port in v1 is named 'default', while it is left unnamed in v2. Default is 'service/v2'.
-l, --labels="": Labels to apply to the service created by this call.
--load-balancer-ip="": IP to assign to to the Load Balancer. If empty, an ephemeral IP will be created and used(cloud-provider specific).
--load-balancer-ip="": IP to assign to to the Load Balancer. If empty, an ephemeral IP will be created and used (cloud-provider specific).
--name="": The name for the newly created object.
--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/release-1.1/docs/user-guide/jsonpath.md].
-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/release-1.2/docs/user-guide/jsonpath.md].
--output-version="": Output the formatted object with the given version (default api-version).
--overrides="": An inline JSON override for the generated object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field.
--port=-1: The port that the service should serve on. Copied from the resource being exposed, if unspecified
--port="": The port that the service should serve on. Copied from the resource being exposed, if unspecified
--protocol="TCP": The network protocol for the service to be created. Default is 'tcp'.
--selector="": A label selector to use for this service. If empty (the default) infer the selector from the replication controller.
--record[=false]: Record current kubectl command in the resource annotation.
--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.
--selector="": A label selector to use for this service. Only equality-based selector requirements are supported. If empty (the default) infer the selector from the replication controller or replica set.
--session-affinity="": If non-empty, set the session affinity for the service to this; legal values: 'None', 'ClientIP'
-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.
--show-labels[=false]: When printing, show all labels as the last column (default hide labels column)
--sort-by="": If non-empty, sort list types using this field specification. The field specification is expressed as a JSONPath expression (e.g. '{.metadata.name}'). The field in the API resource specified by this JSONPath expression must be an integer or a string.
--target-port="": Name or number for the port on the container that the service should direct traffic to. Optional.
--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].
--type="": Type for this service: ClusterIP, NodePort, or LoadBalancer. Default is 'ClusterIP'.
{% endraw %}
```
### Options inherited from parent commands
```
{% raw %}
--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-certificate="": Path to a client certificate 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
@@ -102,14 +100,13 @@ $ kubectl expose rc streamer --port=4100 --protocol=udp --name=video-stream
--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
{% endraw %}
```
### SEE ALSO
* [kubectl](kubectl.html) - kubectl controls the Kubernetes cluster manager
* [kubectl](kubectl.md) - kubectl controls the Kubernetes cluster manager
###### Auto generated by spf13/cobra at 2015-09-25 23:39:47.895322301 +0000 UTC
###### Auto generated by spf13/cobra on 29-Feb-2016
@@ -121,4 +118,3 @@ $ kubectl expose rc streamer --port=4100 --protocol=udp --name=video-stream
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