132 lines
4 KiB
Go
132 lines
4 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"io"
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"os"
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"strconv"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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"github.com/daviddengcn/go-colortext"
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"github.com/spf13/cobra"
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)
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var (
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longDescr = templates.LongDesc(`
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Display addresses of the master and services with label kubernetes.io/cluster-service=true
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To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.`)
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clusterinfo_example = templates.Examples(`
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# Print the address of the master and cluster services
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kubectl cluster-info`)
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)
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func NewCmdClusterInfo(f cmdutil.Factory, out io.Writer) *cobra.Command {
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cmd := &cobra.Command{
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Use: "cluster-info",
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// clusterinfo is deprecated.
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Aliases: []string{"clusterinfo"},
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Short: "Display cluster info",
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Long: longDescr,
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Example: clusterinfo_example,
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Run: func(cmd *cobra.Command, args []string) {
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err := RunClusterInfo(f, out, cmd)
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cmdutil.CheckErr(err)
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},
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}
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cmdutil.AddInclude3rdPartyFlags(cmd)
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cmd.AddCommand(NewCmdClusterInfoDump(f, out))
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return cmd
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}
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func RunClusterInfo(f cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
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if len(os.Args) > 1 && os.Args[1] == "clusterinfo" {
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printDeprecationWarning("cluster-info", "clusterinfo")
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}
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client, err := f.ClientConfig()
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if err != nil {
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return err
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}
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printService(out, "Kubernetes master", client.Host)
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mapper, typer := f.Object()
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cmdNamespace := cmdutil.GetFlagString(cmd, "namespace")
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if cmdNamespace == "" {
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cmdNamespace = api.NamespaceSystem
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}
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// TODO use generalized labels once they are implemented (#341)
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b := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
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NamespaceParam(cmdNamespace).DefaultNamespace().
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SelectorParam("kubernetes.io/cluster-service=true").
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ResourceTypeOrNameArgs(false, []string{"services"}...).
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Latest()
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b.Do().Visit(func(r *resource.Info, err error) error {
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if err != nil {
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return err
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}
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services := r.Object.(*api.ServiceList).Items
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for _, service := range services {
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var link string
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if len(service.Status.LoadBalancer.Ingress) > 0 {
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ingress := service.Status.LoadBalancer.Ingress[0]
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ip := ingress.IP
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if ip == "" {
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ip = ingress.Hostname
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}
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for _, port := range service.Spec.Ports {
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link += "http://" + ip + ":" + strconv.Itoa(int(port.Port)) + " "
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}
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} else {
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if len(client.GroupVersion.Group) == 0 {
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link = client.Host + "/api/" + client.GroupVersion.Version + "/proxy/namespaces/" + service.ObjectMeta.Namespace + "/services/" + service.ObjectMeta.Name
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} else {
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link = client.Host + "/api/" + client.GroupVersion.Group + "/" + client.GroupVersion.Version + "/proxy/namespaces/" + service.ObjectMeta.Namespace + "/services/" + service.ObjectMeta.Name
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}
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}
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name := service.ObjectMeta.Labels["kubernetes.io/name"]
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if len(name) == 0 {
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name = service.ObjectMeta.Name
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}
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printService(out, name, link)
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}
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return nil
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})
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out.Write([]byte("\nTo further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.\n"))
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return nil
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// TODO consider printing more information about cluster
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}
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func printService(out io.Writer, name, link string) {
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ct.ChangeColor(ct.Green, false, ct.None, false)
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fmt.Fprint(out, name)
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ct.ResetColor()
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fmt.Fprintf(out, " is running at ")
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ct.ChangeColor(ct.Yellow, false, ct.None, false)
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fmt.Fprint(out, link)
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ct.ResetColor()
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fmt.Fprintln(out, "")
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}
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