Add some basic troubleshooting commands

These commands are intended to be general, and give users some context
for where they can look to get more information about Ark's behaviors.

Signed-off-by: Nolan Brubaker <nolan@heptio.com>

docs/troubleshooting.md

@@ -2,6 +2,35 @@
 
 These tips can help you troubleshoot known issues. If they don't help, you can [file an issue][4], or talk to us on the [#ark-dr channel][25] on the Kubernetes Slack server. 
 
+Some general commands for troubleshooting that may be helpful:
+
+* `ark backup describe <backupName>` - describe the details of a backup
+* `ark backup logs <backupName>` - fetch the logs for this specific backup. Useful for viewing failures and warnings, including resources that could not be backed up.
+* `ark restore describe <restoreName>` - describe the details of a restore
+* `ark restore logs <restoreName>` - fetch the logs for this specific restore. Useful for viewing failures and warnings, including resources that could not be restored.
+* `kubectl logs deployment/ark -n heptio-ark` - fetch the logs of the Ark server pod. This provides the output of the Ark server processes.
+
+## Getting ark debug logs
+
+You can increase the verbosity of the Ark server by editing your Ark deployment to look like this:
+
+
+```
+kubectl edit deployment/ark -n heptio-ark
+...
+   containers:
+     - name: ark
+       image: gcr.io/heptio-images/ark:latest
+       command:
+         - /ark
+       args:
+         - server
+         - --log-level # Add this line
+         - debug       # Add this line
+...
+```
+
+
 * [Debug installation/setup issues][2]
 
 * [Debug restores][1]
@@ -9,4 +38,4 @@ These tips can help you troubleshoot known issues. If they don't help, you can [
 [1]: debugging-restores.md
 [2]: debugging-install.md
 [4]: https://github.com/heptio/ark/issues
-[25]: https://kubernetes.slack.com/messages/ark-dr
+[25]: https://kubernetes.slack.com/messages/ark-dr