# Istio

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in the documentation and/or other materials provided with the
distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

```console
$ journalctl -t kubelet -n 1000 | less
```

#### GKE via Stackdriver Log Viewer

Each GKE cluster's will have many categories of logs collected by Stackdriver.  Logs can be monitored via
the project's [log viewer](https://cloud.google.com/logging/docs/view/overview) and/or the `gcloud logging read`
capability.

The following example grabs the last 10 `kubelet` logs containing the string "cmdAdd" in the log message.

  optional NodeSelector required = 1;
}

// Projection that may be projected along with other supported volume types
message VolumeProjection {
  // secret information about the secret data to project
  // +optional
  optional SecretProjection secret = 1;

  // downwardAPI information about the downwardAPI data to project
  // +optional
  optional DownwardAPIProjection downwardAPI = 2;