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We do this because they will be recreated immediately by the DaemonSet Controller. In addition, we also require a specific flag (--ignore-daemonsets) when there are DaemonSet pods on the node.
165 lines
3.9 KiB
Groff
165 lines
3.9 KiB
Groff
.TH "KUBERNETES" "1" " kubernetes User Manuals" "Eric Paris" "Jan 2015" ""
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.SH NAME
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.PP
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kubectl drain \- Drain node in preparation for maintenance
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.SH SYNOPSIS
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.PP
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\fBkubectl drain\fP [OPTIONS]
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.SH DESCRIPTION
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.PP
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Drain node in preparation for maintenance.
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.PP
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The given node will be marked unschedulable to prevent new pods from arriving.
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Then drain deletes all pods except mirror pods (which cannot be deleted through
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the API server). If there are DaemonSet\-managed pods, drain will not proceed
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without \-\-ignore\-daemonsets, and regardless it will not delete any
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DaemonSet\-managed pods, because those pods would be immediately replaced by the
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DaemonSet controller, which ignores unschedulable marknigs. If there are any
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pods that are neither mirror pods nor managed\-\-by ReplicationController,
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DaemonSet or Job\-\-, then drain will not delete any pods unless you use \-\-force.
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.PP
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When you are ready to put the node back into service, use kubectl uncordon, which
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will make the node schedulable again.
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.SH OPTIONS
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.PP
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\fB\-\-force\fP=false
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Continue even if there are pods not managed by a ReplicationController, Job, or DaemonSet.
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.PP
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\fB\-\-grace\-period\fP=\-1
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Period of time in seconds given to each pod to terminate gracefully. If negative, the default value specified in the pod will be used.
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.PP
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\fB\-\-ignore\-daemonsets\fP=false
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Ignore DaemonSet\-managed pods.
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.SH OPTIONS INHERITED FROM PARENT COMMANDS
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.PP
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\fB\-\-alsologtostderr\fP=false
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log to standard error as well as files
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.PP
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\fB\-\-api\-version\fP=""
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The API version to use when talking to the server
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.PP
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\fB\-\-certificate\-authority\fP=""
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Path to a cert. file for the certificate authority.
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\fB\-\-client\-certificate\fP=""
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Path to a client certificate file for TLS.
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\fB\-\-client\-key\fP=""
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Path to a client key file for TLS.
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\fB\-\-cluster\fP=""
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The name of the kubeconfig cluster to use
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\fB\-\-context\fP=""
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The name of the kubeconfig context to use
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.PP
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\fB\-\-insecure\-skip\-tls\-verify\fP=false
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If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.
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.PP
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\fB\-\-kubeconfig\fP=""
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Path to the kubeconfig file to use for CLI requests.
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\fB\-\-log\-backtrace\-at\fP=:0
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when logging hits line file:N, emit a stack trace
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.PP
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\fB\-\-log\-dir\fP=""
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If non\-empty, write log files in this directory
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\fB\-\-log\-flush\-frequency\fP=5s
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Maximum number of seconds between log flushes
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\fB\-\-logtostderr\fP=true
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log to standard error instead of files
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\fB\-\-match\-server\-version\fP=false
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Require server version to match client version
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\fB\-\-namespace\fP=""
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If present, the namespace scope for this CLI request.
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\fB\-\-password\fP=""
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Password for basic authentication to the API server.
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\fB\-s\fP, \fB\-\-server\fP=""
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The address and port of the Kubernetes API server
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\fB\-\-stderrthreshold\fP=2
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logs at or above this threshold go to stderr
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.PP
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\fB\-\-token\fP=""
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Bearer token for authentication to the API server.
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\fB\-\-user\fP=""
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The name of the kubeconfig user to use
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\fB\-\-username\fP=""
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Username for basic authentication to the API server.
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.PP
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\fB\-\-v\fP=0
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log level for V logs
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\fB\-\-vmodule\fP=
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comma\-separated list of pattern=N settings for file\-filtered logging
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.SH EXAMPLE
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.PP
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.RS
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.nf
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# Drain node "foo", even if there are pods not managed by a ReplicationController, Job, or DaemonSet on it.
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$ kubectl drain foo \-\-force
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# As above, but abort if there are pods not managed by a ReplicationController, Job, or DaemonSet, and use a grace period of 15 minutes.
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$ kubectl drain foo \-\-grace\-period=900
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.fi
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.RE
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.SH SEE ALSO
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.PP
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\fBkubectl(1)\fP,
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.SH HISTORY
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.PP
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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!
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