mirror of https://github.com/k3s-io/k3s
73 lines
2.8 KiB
Go
73 lines
2.8 KiB
Go
/*
|
|
Copyright 2014 Google Inc. All rights reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
func (f *Factory) NewCmdResize(out io.Writer) *cobra.Command {
|
|
cmd := &cobra.Command{
|
|
Use: "resize [--resource-version=<version>] [--current-replicas=<count>] --replicas=<count> <resource> <id>",
|
|
Short: "Set a new size for a resizable resource (currently only Replication Controllers)",
|
|
Long: `Set a new size for a resizable resource (currently only Replication Controllers)
|
|
|
|
Resize also allows users to specify one or more preconditions for the resize action.
|
|
The new size is specified by --replicas=<n>. You can also specify an optional precondition.
|
|
The two currently supported options are --current-replicas or --resource-version.
|
|
If a precondition is specified, it is validated before the resize is attempted, and it is
|
|
guaranteed that the precondition holds true when the resize is sent to the server.
|
|
|
|
Examples:
|
|
$ kubectl resize --replicas=3 replicationcontrollers foo
|
|
resized
|
|
|
|
# will only execute if the current size is 2
|
|
$ kubectl resize --current-replicas=2 --replicas=3 replicationcontrollers foo
|
|
`,
|
|
Run: func(cmd *cobra.Command, args []string) {
|
|
count := GetFlagInt(cmd, "replicas")
|
|
if len(args) != 2 || count < 0 {
|
|
usageError(cmd, "--replicas=<count> <resource> <id>")
|
|
}
|
|
|
|
cmdNamespace, err := f.DefaultNamespace(cmd)
|
|
checkErr(err)
|
|
|
|
mapper, _ := f.Object(cmd)
|
|
mapping, namespace, name := ResourceFromArgs(cmd, args, mapper, cmdNamespace)
|
|
|
|
resizer, err := f.Resizer(cmd, mapping)
|
|
checkErr(err)
|
|
|
|
resourceVersion := GetFlagString(cmd, "resource-version")
|
|
currentSize := GetFlagInt(cmd, "current-replicas")
|
|
s, err := resizer.Resize(namespace, name, &kubectl.ResizePrecondition{currentSize, resourceVersion}, uint(count))
|
|
checkErr(err)
|
|
fmt.Fprintf(out, "%s\n", s)
|
|
},
|
|
}
|
|
cmd.Flags().String("resource-version", "", "Precondition for resource version. Requires that the current resource version match this value in order to resize")
|
|
cmd.Flags().Int("current-replicas", -1, "Precondition for current size. Requires that the current size of the replication controller match this value in order to resize")
|
|
cmd.Flags().Int("replicas", -1, "The new number desired number of replicas. Required.")
|
|
return cmd
|
|
}
|