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This commit is contained in:
Brendan Burns 2016-05-11 11:17:26 -07:00
parent 092afb6285
commit d8daa07f08
2 changed files with 30 additions and 16 deletions
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6
pkg/kubectl/cmd/clusterinfo.go
View File

@ -30,13 +30,16 @@ import (
"github.com/spf13/cobra"
)
var longDescr = `Display addresses of the master and services with label kubernetes.io/cluster-service=true
To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.`
func NewCmdClusterInfo(f *cmdutil.Factory, out io.Writer) *cobra.Command {
cmd := &cobra.Command{
Use: "cluster-info",
// clusterinfo is deprecated.
Aliases: []string{"clusterinfo"},
Short: "Display cluster info",
Long: "Display addresses of the master and services with label kubernetes.io/cluster-service=true",
Long: longDescr,
Run: func(cmd *cobra.Command, args []string) {
err := RunClusterInfo(f, out, cmd)
cmdutil.CheckErr(err)
@ -102,6 +105,7 @@ func RunClusterInfo(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error
}
return nil
})
out.Write([]byte("\nTo further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.\n"))
return nil
// TODO consider printing more information about cluster

40
pkg/kubectl/cmd/clusterinfo_dump.go
View File

@ -35,7 +35,7 @@ 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,
Long: dumpLong + "\n" + dumpExample,
Run: func(cmd *cobra.Command, args []string) {
cmdutil.CheckErr(dumpClusterInfo(f, cmd, args, cmdOut))
},
@ -52,22 +52,25 @@ Dumps cluster info out suitable for debugging and diagnosing cluster problems.
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.
The command also dumps the logs of all of the pods in the cluster, these logs are dumped into different directories
based on namespace and pod name.
`
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 current cluster state to /path/to/cluster-state
kubectl cluster-info dump --output-directory=/path/to/cluster-state
# 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`
# Dump a set of namespaces to /path/to/cluster-state
kubectl cluster-info dump --namespaces default,kube-system --output-directory=/path/to/cluster-state`
)
func getWriter(cmd *cobra.Command, defaultWriter io.Writer, filename string) io.Writer {
func setupOutputWriter(cmd *cobra.Command, defaultWriter io.Writer, filename string) io.Writer {
dir := cmdutil.GetFlagString(cmd, "output-directory")
if len(dir) == 0 || dir == "-" {
return defaultWriter
@ -97,7 +100,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
return err
}
if err := printer.PrintObj(nodes, getWriter(cmd, out, "nodes.json")); err != nil {
if err := printer.PrintObj(nodes, setupOutputWriter(cmd, out, "nodes.json")); err != nil {
return err
}
@ -130,7 +133,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(events, getWriter(cmd, out, path.Join(namespace, "events.json"))); err != nil {
if err := printer.PrintObj(events, setupOutputWriter(cmd, out, path.Join(namespace, "events.json"))); err != nil {
return err
}
@ -138,7 +141,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(rcs, getWriter(cmd, out, path.Join(namespace, "replication-controllers.json"))); err != nil {
if err := printer.PrintObj(rcs, setupOutputWriter(cmd, out, path.Join(namespace, "replication-controllers.json"))); err != nil {
return err
}
@ -146,7 +149,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(svcs, getWriter(cmd, out, path.Join(namespace, "services.json"))); err != nil {
if err := printer.PrintObj(svcs, setupOutputWriter(cmd, out, path.Join(namespace, "services.json"))); err != nil {
return err
}
@ -154,7 +157,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(sets, getWriter(cmd, out, path.Join(namespace, "daemonsets.json"))); err != nil {
if err := printer.PrintObj(sets, setupOutputWriter(cmd, out, path.Join(namespace, "daemonsets.json"))); err != nil {
return err
}
@ -162,7 +165,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(deps, getWriter(cmd, out, path.Join(namespace, "deployments.json"))); err != nil {
if err := printer.PrintObj(deps, setupOutputWriter(cmd, out, path.Join(namespace, "deployments.json"))); err != nil {
return err
}
@ -170,7 +173,7 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
if err != nil {
return err
}
if err := printer.PrintObj(rps, getWriter(cmd, out, path.Join(namespace, "replicasets.json"))); err != nil {
if err := printer.PrintObj(rps, setupOutputWriter(cmd, out, path.Join(namespace, "replicasets.json"))); err != nil {
return err
}
@ -179,13 +182,13 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
return err
}
if err := printer.PrintObj(pods, getWriter(cmd, out, path.Join(namespace, "pods.json"))); err != nil {
if err := printer.PrintObj(pods, setupOutputWriter(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 := setupOutputWriter(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 {
@ -200,5 +203,12 @@ func dumpClusterInfo(f *cmdutil.Factory, cmd *cobra.Command, args []string, out
writer.Write([]byte(fmt.Sprintf("==== END logs for %s/%s ====\n", pod.Namespace, pod.Name)))
}
}
dir := cmdutil.GetFlagString(cmd, "output-directory")
if len(dir) == 0 {
dir = "."
}
if dir != "-" {
fmt.Fprintf(out, "Cluster info dumped to %s", dir)
}
return nil
}