Add a 'kubectl clusterinfo dump' option

.generated_docs

@@ -10,6 +10,7 @@ docs/man/man1/kubectl-api-versions.1
 docs/man/man1/kubectl-apply.1
 docs/man/man1/kubectl-attach.1
 docs/man/man1/kubectl-autoscale.1
+docs/man/man1/kubectl-cluster-info-dump.1
 docs/man/man1/kubectl-cluster-info.1
 docs/man/man1/kubectl-config-current-context.1
 docs/man/man1/kubectl-config-set-cluster.1
@@ -65,6 +66,7 @@ docs/user-guide/kubectl/kubectl_apply.md
 docs/user-guide/kubectl/kubectl_attach.md
 docs/user-guide/kubectl/kubectl_autoscale.md
 docs/user-guide/kubectl/kubectl_cluster-info.md
+docs/user-guide/kubectl/kubectl_cluster-info_dump.md
 docs/user-guide/kubectl/kubectl_config.md
 docs/user-guide/kubectl/kubectl_config_current-context.md
 docs/user-guide/kubectl/kubectl_config_set-cluster.md

contrib/completions/bash/kubectl

@@ -3361,10 +3361,57 @@ _kubectl_config()
     noun_aliases=()
 }
 
+_kubectl_cluster-info_dump()
+{
+    last_command="kubectl_cluster-info_dump"
+    commands=()
+
+    flags=()
+    two_word_flags=()
+    flags_with_completion=()
+    flags_completion=()
+
+    flags+=("--all-namespaces")
+    flags+=("--namespaces=")
+    flags+=("--output-directory=")
+    flags+=("--alsologtostderr")
+    flags+=("--api-version=")
+    flags+=("--as=")
+    flags+=("--certificate-authority=")
+    flags+=("--client-certificate=")
+    flags+=("--client-key=")
+    flags+=("--cluster=")
+    flags+=("--context=")
+    flags+=("--insecure-skip-tls-verify")
+    flags+=("--kubeconfig=")
+    flags+=("--log-backtrace-at=")
+    flags+=("--log-dir=")
+    flags+=("--log-flush-frequency=")
+    flags+=("--logtostderr")
+    flags+=("--match-server-version")
+    flags+=("--namespace=")
+    flags_with_completion+=("--namespace")
+    flags_completion+=("__kubectl_get_namespaces")
+    flags+=("--password=")
+    flags+=("--server=")
+    two_word_flags+=("-s")
+    flags+=("--stderrthreshold=")
+    flags+=("--token=")
+    flags+=("--user=")
+    flags+=("--username=")
+    flags+=("--v=")
+    flags+=("--vmodule=")
+
+    must_have_one_flag=()
+    must_have_one_noun=()
+    noun_aliases=()
+}
+
 _kubectl_cluster-info()
 {
     last_command="kubectl_cluster-info"
     commands=()
+    commands+=("dump")
 
     flags=()
     two_word_flags=()

docs/man/man1/kubectl-cluster-info.1

@@ -122,7 +122,7 @@ Display addresses of the master and services with label kubernetes.io/cluster\-s
 
 .SH SEE ALSO
 .PP
-\fBkubectl(1)\fP,
+\fBkubectl(1)\fP, \fBkubectl\-cluster\-info\-dump(1)\fP,
 
 
 .SH HISTORY

docs/user-guide/kubectl/kubectl_cluster-info.md

@@ -82,8 +82,9 @@ kubectl cluster-info
 ### SEE ALSO
 
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
+* [kubectl cluster-info dump](kubectl_cluster-info_dump.md)	 - Dump lots of relevant info for debugging and diagnosis.
 
-###### Auto generated by spf13/cobra on 5-Apr-2016
+###### Auto generated by spf13/cobra on 27-Apr-2016
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_cluster-info.md?pixel)]()

docs/yaml/kubectl/kubectl_cluster-info.yaml

@@ -70,3 +70,4 @@ inherited_options:
     comma-separated list of pattern=N settings for file-filtered logging
 see_also:
 - kubectl
+- dump

pkg/kubectl/cmd/clusterinfo.go

@@ -43,6 +43,7 @@ func NewCmdClusterInfo(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 		},
 	}
 	cmdutil.AddInclude3rdPartyFlags(cmd)
+	cmd.AddCommand(NewCmdClusterInfoDump(f, out))
 	return cmd
 }
 

pkg/kubectl/cmd/clusterinfo_dump.go

+/*
+Copyright 2016 The Kubernetes Authors 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"
+	"os"
+	"path"
+
+	"github.com/spf13/cobra"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/client/unversioned"
+	"k8s.io/kubernetes/pkg/kubectl"
+	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
+)
+
+// NewCmdCreateSecret groups subcommands to create various types of secrets
+func NewCmdClusterInfoDump(f *cmdutil.Factory, cmdOut io.Writer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "dump",
+		Short: "Dump lots of relevant info for debugging and diagnosis.",
+		Long:  dumpLong,
+		Run: func(cmd *cobra.Command, args []string) {
+			cmdutil.CheckErr(dumpClusterInfo(f, cmd, args, cmdOut))
+		},
+	}
+	cmd.Flags().String("output-directory", "", "Where to output the files.  If empty or '-' uses stdout, otherwise creates a directory hierarchy in that directory")
+	cmd.Flags().StringSlice("namespaces", []string{}, "A comma separated list of namespaces to dump.")
+	cmd.Flags().Bool("all-namespaces", false, "If true, dump all namespaces.  If true, --namespaces is ignored.")
+	return cmd
+}
+
+const (
+	dumpLong = `
+Dumps cluster info out suitable for debugging and diagnosing cluster problems.  By default, dumps everything to
+stdout. You can optionally specify a directory with --output-directory.  If you specify a directory, kubernetes will
+build a set of files in that directory.  By default only dumps things in the 'kube-system' namespace, but you can
+switch to a different namespace with the --namespaces flag, or specify --all-namespaces to dump all namespaces.
+`
+
+	dumpExample = `  # Dump current cluster state to stdout
+  kubectl cluster-info dump
+  
+  # Dump current cluster state to /tmp
+  kubectl cluster-info dump --output-directory=/tmp
+  
+  # Dump all namespaces to stdout
+  kubectl cluster-info dump --all-namespaces
+  
+  # Dump a set of namespaces to /tmp
+  kubectl cluster-info dump --namespaces default,kube-system --output-directory=/tmp`
+)
+
+func getWriter(cmd *cobra.Command, out io.Writer, filename string) io.Writer {
+	dir := cmdutil.GetFlagString(cmd, "output-directory")
+	if len(dir) == 0 || dir == "-" {
+		return out
+	}
+	fullFile := path.Join(dir, filename)
+	parent := path.Dir(fullFile)
+	cmdutil.CheckErr(os.MkdirAll(parent, 0755))
+
+	file, err := os.Create(path.Join(dir, filename))
+	cmdutil.CheckErr(err)
+	return file
+}
+
+func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out io.Writer) error {
+	var c *unversioned.Client
+	var err error
+	if c, err = f.Client(); err != nil {
+		return err
+	}
+	printer, _, err := kubectl.GetPrinter("json", "")
+	if err != nil {
+		return err
+	}
+
+	nodes, err := c.Nodes().List(api.ListOptions{})
+	if err != nil {
+		return err
+	}
+
+	if err := printer.PrintObj(nodes, getWriter(cmd, out, "nodes.json")); err != nil {
+		return err
+	}
+
+	var namespaces []string
+	if cmdutil.GetFlagBool(cmd, "all-namespaces") {
+		namespaceList, err := c.Namespaces().List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		for ix := range namespaceList.Items {
+			namespaces = append(namespaces, namespaceList.Items[ix].Name)
+		}
+	} else {
+		namespaces = cmdutil.GetFlagStringSlice(cmd, "namespaces")
+		if len(namespaces) == 0 {
+			cmdNamespace, _, err := f.DefaultNamespace()
+			if err != nil {
+				return err
+			}
+			namespaces = []string{
+				api.NamespaceSystem,
+				cmdNamespace,
+			}
+		}
+	}
+	for _, namespace := range namespaces {
+		// TODO: this is repetitive in the extreme.  Use reflection or
+		// something to make this a for loop.
+		events, err := c.Events(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(events, getWriter(cmd, out, path.Join(namespace, "events.json"))); err != nil {
+			return err
+		}
+
+		rcs, err := c.ReplicationControllers(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(rcs, getWriter(cmd, out, path.Join(namespace, "replication-controllers.json"))); err != nil {
+			return err
+		}
+
+		svcs, err := c.Services(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(svcs, getWriter(cmd, out, path.Join(namespace, "services.json"))); err != nil {
+			return err
+		}
+
+		sets, err := c.DaemonSets(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(sets, getWriter(cmd, out, path.Join(namespace, "daemonsets.json"))); err != nil {
+			return err
+		}
+
+		deps, err := c.Deployments(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(deps, getWriter(cmd, out, path.Join(namespace, "deployments.json"))); err != nil {
+			return err
+		}
+
+		rps, err := c.ReplicaSets(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+		if err := printer.PrintObj(rps, getWriter(cmd, out, path.Join(namespace, "replicasets.json"))); err != nil {
+			return err
+		}
+
+		pods, err := c.Pods(namespace).List(api.ListOptions{})
+		if err != nil {
+			return err
+		}
+
+		if err := printer.PrintObj(pods, getWriter(cmd, out, path.Join(namespace, "pods.json"))); err != nil {
+			return err
+		}
+
+		for ix := range pods.Items {
+			pod := &pods.Items[ix]
+			writer := getWriter(cmd, out, path.Join(namespace, pod.Name, "logs.txt"))
+			writer.Write([]byte(fmt.Sprintf("==== START logs for %s/%s ====\n", pod.Namespace, pod.Name)))
+			request, err := f.LogsForObject(pod, &api.PodLogOptions{})
+			if err != nil {
+				return err
+			}
+
+			data, err := request.DoRaw()
+			if err != nil {
+				return err
+			}
+			writer.Write(data)
+			writer.Write([]byte(fmt.Sprintf("==== END logs for %s/%s ====\n", pod.Namespace, pod.Name)))
+		}
+	}
+	return nil
+}