Manpages

Eric Paris Jan 2015

NAME

kubectl patch - Update field(s) of a resource

SYNOPSIS

kubectl patch [OPTIONS]

DESCRIPTION

Update field(s) of a resource using strategic merge patch, a JSON merge patch, or a JSON patch.

JSON and YAML formats are accepted.

OPTIONS

--allow-missing-template-keys=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.

--dry-run="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.

--field-manager="kubectl-patch"

Name of the manager used to track field ownership.

-f, --filename=[]

Filename, directory, or URL to files identifying the resource to update

-k, --kustomize=""

Process the kustomization directory. This flag can’t be used together with -f or -R.

--local=false

If true, patch will operate on the content of the file, not the server-side resource.

-o, --output=""

Output format. One of: json|yaml|name|go-template|go-template-file|template|templatefile|jsonpath|jsonpath-as-json|jsonpath-file.

-p, --patch=""

The patch to be applied to the resource JSON file.

--patch-file=""

A file containing a patch to be applied to the resource.

--record=false

Record current kubectl command in the resource annotation. If set to false, do not record the command. If set to true, record the command. If not set, default to updating the existing annotation value only if one already exists.

-R, --recursive=false

Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory.

--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="strategic"

The type of patch being provided; one of [json merge strategic]

OPTIONS INHERITED FROM PARENT COMMANDS

--add-dir-header=false

If true, adds the file directory to the header of the log messages

--alsologtostderr=false

log to standard error as well as files

--application-metrics-count-limit=100

Max number of application metrics to store (per container)

--as=""

Username to impersonate for the operation

--as-group=[]

Group to impersonate for the operation, this flag can be repeated to specify multiple groups.

--azure-container-registry-config=""

Path to the file containing Azure container registry configuration information.

--boot-id-file="/proc/sys/kernel/random/boot_id"

Comma-separated list of files to check for boot-id. Use the first one that exists.

--cache-dir="/home/user/.kube/cache"

Default cache directory

--certificate-authority=""

Path to a cert file for the certificate authority

--client-certificate=""

Path to a client certificate file for TLS

--client-key=""

Path to a client key file for TLS

--cloud-provider-gce-l7lb-src-cidrs=130.211.0.0/22,35.191.0.0/16

CIDRs opened in GCE firewall for L7 LB traffic proxy health checks

--cloud-provider-gce-lb-src-cidrs=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

--cluster=""

The name of the kubeconfig cluster to use

--container-hints="/etc/cadvisor/container_hints.json"

location of the container hints file

--containerd="/run/containerd/containerd.sock"

containerd endpoint

--containerd-namespace="k8s.io"

containerd namespace

--context=""

The name of the kubeconfig context to use

--default-not-ready-toleration-seconds=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.

--default-unreachable-toleration-seconds=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.

--disable-root-cgroup-stats=false

Disable collecting root Cgroup stats

--docker="unix:///var/run/docker.sock";

docker endpoint

--docker-env-metadata-whitelist=""

a comma-separated list of environment variable keys matched with specified prefix that needs to be collected for docker containers

--docker-only=false

Only report docker containers in addition to root stats

--docker-root="/var/lib/docker"

DEPRECATED: docker root is read from docker info (this is a fallback, default: /var/lib/docker)

--docker-tls=false

use TLS to connect to docker

--docker-tls-ca="ca.pem"

path to trusted CA

--docker-tls-cert="cert.pem"

path to client certificate

--docker-tls-key="key.pem"

path to private key

--enable-load-reader=false

Whether to enable cpu load reader

--event-storage-age-limit="default=0"

Max length of time for which to store events (per type). Value is a comma separated list of key values, where the keys are event types (e.g.: creation, oom) or "default" and the value is a duration. Default is applied to all non-specified event types

--event-storage-event-limit="default=0"

Max number of events to store (per type). Value is a comma separated list of key values, where the keys are event types (e.g.: creation, oom) or "default" and the value is an integer. Default is applied to all non-specified event types

--global-housekeeping-interval=1m0s

Interval between global housekeepings

--housekeeping-interval=10s

Interval between container housekeepings

--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-cadvisor-usage=false

Whether to log the usage of the cAdvisor container

--log-dir=""

If non-empty, write log files in this directory

--log-file=""

If non-empty, use this log file

--log-file-max-size=1800

Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited.

--log-flush-frequency=5s

Maximum number of seconds between log flushes

--logtostderr=true

log to standard error instead of files

--machine-id-file="/etc/machine-id,/var/lib/dbus/machine-id"

Comma-separated list of files to check for machine-id. Use the first one that exists.

--match-server-version=false

Require server version to match client version

-n, --namespace=""

If present, the namespace scope for this CLI request

--one-output=false

If true, only write logs to their native severity level (vs also writing to each lower severity level

--password=""

Password for basic authentication to the API server

--profile="none"

Name of profile to capture. One of (none|cpu|heap|goroutine|threadcreate|block|mutex)

--profile-output="profile.pprof"

Name of the file to write the profile to

--referenced-reset-interval=0

Reset interval for referenced bytes (container_referenced_bytes metric), number of measurement cycles after which referenced bytes are cleared, if set to 0 referenced bytes are never cleared (default: 0)

--request-timeout="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.

-s, --server=""

The address and port of the Kubernetes API server

--skip-headers=false

If true, avoid header prefixes in the log messages

--skip-log-headers=false

If true, avoid headers when opening log files

--stderrthreshold=2

logs at or above this threshold go to stderr

--storage-driver-buffer-duration=1m0s

Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction

--storage-driver-db="cadvisor"

database name

--storage-driver-host="localhost:8086"

database host:port

--storage-driver-password="root"

database password

--storage-driver-secure=false

use secure connection with database

--storage-driver-table="stats"

table name

--storage-driver-user="root"

database username

--tls-server-name=""

Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used

--token=""

Bearer token for authentication to the API server

--update-machine-info-interval=5m0s

Interval between machine info updates.

--user=""

The name of the kubeconfig user to use

--username=""

Username for basic authentication to the API server

-v, --v=0

number for the log level verbosity

--version=false

Print version information and quit

--vmodule=

comma-separated list of pattern=N settings for file-filtered logging

--warnings-as-errors=false

Treat warnings received from the server as errors and exit with a non-zero exit code

EXAMPLE

# Partially update a node using a strategic merge patch. Specify the patch as JSON.
kubectl patch node k8s-node-1 -p ’{"spec":{"unschedulable":true}}’

# Partially update a node using a strategic merge patch. Specify the patch as YAML.
kubectl patch node k8s-node-1 -p $’spec:\n unschedulable: true’

# Partially update a node identified by the type and name specified in "node.json" using strategic merge patch.
kubectl patch -f node.json -p ’{"spec":{"unschedulable":true}}’

# Update a container’s image; spec.containers[*].name is required because it’s a merge key.
kubectl patch pod valid-pod -p ’{"spec":{"containers":[{"name":"kubernetes-serve-hostname","image":"new image"}]}}’

# Update a container’s image using a json patch with positional arrays.
kubectl patch pod valid-pod --type=’json’ -p=’[{"op": "replace", "path": "/spec/containers/0/image", "value":"new image"}]’

SEE ALSO

kubectl(1),

HISTORY

January 2015, Originally compiled by Eric Paris (eparis at redhat dot com) based on the kubernetes source material, but hopefully they have been automatically generated since!