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kubectl run to produce deployment and job

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This commit is contained in:
Janet Kuo
2015-11-12 17:07:21 -08:00
parent f3753c02ed
commit c0c02c95c4
9 changed files with 618 additions and 189 deletions
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21
pkg/kubectl/cmd/run.go
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@@ -34,7 +34,7 @@ import (
const (
run_long = `Create and run a particular image, possibly replicated.
Creates a replication controller to manage the created container(s).`
Creates a replication controller or job to manage the created container(s).`
run_example = `# Start a single instance of nginx.
$ kubectl run nginx --image=nginx
@@ -53,14 +53,17 @@ $ kubectl run nginx --image=nginx --dry-run
# Start a single instance of nginx, but overload the spec of the replication controller with a partial set of values parsed from JSON.
$ kubectl run nginx --image=nginx --overrides='{ "apiVersion": "v1", "spec": { ... } }'
# Start a single instance of nginx and keep it in the foreground, don't restart it if it exits.
$ kubectl run -i --tty nginx --image=nginx --restart=Never
# Start a single instance of busybox and keep it in the foreground, don't restart it if it exits.
$ kubectl run -i --tty busybox --image=busybox --restart=Never
# Start the nginx container using the default command, but use custom arguments (arg1 .. argN) for that command.
$ kubectl run nginx --image=nginx -- <arg1> <arg2> ... <argN>
# Start the nginx container using a different command and custom arguments
$ kubectl run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>`
# Start the nginx container using a different command and custom arguments.
$ kubectl run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>
# Start the perl container to compute π to 2000 places and print it out.
$ kubectl run pi --image=perl --restart=OnFailure -- perl -Mbignum=bpi -wle 'print bpi(2000)'`
)
func NewCmdRun(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *cobra.Command {
@@ -84,7 +87,8 @@ func NewCmdRun(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *c
}
func addRunFlags(cmd *cobra.Command) {
cmd.Flags().String("generator", "", "The name of the API generator to use. Default is 'run/v1' if --restart=Always, otherwise the default is 'run-pod/v1'.")
// TODO: Change the default to "deployment/v1beta1" (which is a valid generator) when deployment reaches beta (#15313)
cmd.Flags().String("generator", "", "The name of the API generator to use. Default is 'run/v1' if --restart=Always, otherwise the default is 'job/v1beta1'.")
cmd.Flags().String("image", "", "The image for the container to run.")
cmd.MarkFlagRequired("image")
cmd.Flags().IntP("replicas", "r", 1, "Number of replicas to create for this container. Default is 1.")
@@ -98,7 +102,7 @@ func addRunFlags(cmd *cobra.Command) {
cmd.Flags().Bool("tty", false, "Allocated a TTY for each container in the pod. Because -t is currently shorthand for --template, -t is not supported for --tty. This shorthand is deprecated and we expect to adopt -t for --tty soon.")
cmd.Flags().Bool("attach", false, "If true, wait for the Pod to start running, and then attach to the Pod as if 'kubectl attach ...' were called. Default false, unless '-i/--interactive' is set, in which case the default is true.")
cmd.Flags().Bool("leave-stdin-open", false, "If the pod is started in interactive mode or with stdin, leave stdin open after the first attach completes. By default, stdin will be closed after the first attach completes.")
cmd.Flags().String("restart", "Always", "The restart policy for this Pod. Legal values [Always, OnFailure, Never]. If set to 'Always' a replication controller is created for this pod, if set to OnFailure or Never, only the Pod is created and --replicas must be 1. Default 'Always'")
cmd.Flags().String("restart", "Always", "The restart policy for this Pod. Legal values [Always, OnFailure, Never]. If set to 'Always' a replication controller is created for this pod, if set to OnFailure or Never, a job is created for this pod and --replicas must be 1. Default 'Always'")
cmd.Flags().Bool("command", false, "If true and extra arguments are present, use them as the 'command' field in the container, rather than the 'args' field which is the default.")
cmd.Flags().String("requests", "", "The resource requirement requests for this container. For example, 'cpu=100m,memory=256Mi'")
cmd.Flags().String("limits", "", "The resource requirement limits for this container. For example, 'cpu=200m,memory=512Mi'")
@@ -142,10 +146,11 @@ func Run(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cob
generatorName := cmdutil.GetFlagString(cmd, "generator")
if len(generatorName) == 0 {
// TODO: Change the default to "deployment/v1beta1" when deployment reaches beta (#15313)
if restartPolicy == api.RestartPolicyAlways {
generatorName = "run/v1"
} else {
generatorName = "run-pod/v1"
generatorName = "job/v1beta1"
}
}
generator, found := f.Generator(generatorName)