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[command reference] add warm reboot command document (#704)
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Signed-off-by: Ying Xie <ying.xie@microsoft.com>
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yxieca authored Oct 23, 2019
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* [VLAN Config commands](#vlan-config-commands)
* [FDB](#fdb)
* [FDB show commands](#fdb-show-commands)
* [Warm Reboot](#warm-reboot)
* [Warm Restart](#warm-restart)
* [Warm Restart show commands](#warm-restart-show-commands)
* [Warm Restart Config commands](#warm-restart-config-commands)
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Go Back To [Beginning of the document](#) or [Beginning of this section](#vlan--FDB)

## Warm Reboot

warm-reboot command initiates a warm reboot of the device.

warm-reboot command doesn't require setting warm restart configuration. The
command will setup everything needed to perform warm reboot.

This command requires root privilege. Example:

- Usage:
```
sudo warm-reboot
```

- Parameters:
```
-h,-? : get this help
-v : turn on verbose
-f : force execution
-r : reboot with /sbin/reboot
-k : reboot with /sbin/kexec -e [default]
-x : execute script with -x flag
-c : specify control plane assistant IP list
-s : strict mode: do not proceed without:
- control plane assistant IP list.
```

- Example:
```
admin@sonic:~$ sudo warm-reboot -v
Tue Oct 22 23:20:53 UTC 2019 Pausing orchagent ...
Tue Oct 22 23:20:53 UTC 2019 Stopping radv ...
Tue Oct 22 23:20:54 UTC 2019 Stopping bgp ...
Tue Oct 22 23:20:54 UTC 2019 Stopped bgp ...
Tue Oct 22 23:20:57 UTC 2019 Initialize pre-shutdown ...
Tue Oct 22 23:20:58 UTC 2019 Requesting pre-shutdown ...
Tue Oct 22 23:20:58 UTC 2019 Waiting for pre-shutdown ...
Tue Oct 22 23:20:59 UTC 2019 Pre-shutdown succeeded ...
Tue Oct 22 23:20:59 UTC 2019 Backing up database ...
Tue Oct 22 23:21:00 UTC 2019 Stopping teamd ...
Tue Oct 22 23:21:00 UTC 2019 Stopped teamd ...
Tue Oct 22 23:21:00 UTC 2019 Stopping syncd ...
Tue Oct 22 23:21:11 UTC 2019 Stopped syncd ...
Tue Oct 22 23:21:11 UTC 2019 Stopping all remaining containers ...
Tue Oct 22 23:21:13 UTC 2019 Stopped all remaining containers ...
Tue Oct 22 23:21:15 UTC 2019 Rebooting with /sbin/kexec -e to SONiC-OS-20191021.01 ...
```

Go Back To [Beginning of the document](#) or [Beginning of this section](#Warm-Reboot)

## Warm Restart

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