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SetupRSync.md

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Introduction

This guide will show you how to use rsync to archive your saved TeslaCam footage on a remote storage server.

Since sftp/rsync accesses a computer through SSH the only requirement for hosting an SFTP/rsync server is to have a box running SSH. For example, you could use another Raspberry Pi connected to your local network with a USB storage drive plugged in. The official Raspberry Pi site has a good example on how to mount an external drive.

You will need the username and host/IP of the storage server, as well as the path for the files to go in, and the storage server will need to allow SSH.

This guide makes the following assumptions:

  • You are running your own sftp/rsync server that you have admin rights to, or can at least add a public key to its ~/.ssh/authorized_keys file.
  • The sftp/rsync server has rsync installed (raspbian automatically does)

Step 1: Authentication

Similar to sftp, rsync by default uses ssh to connect to a remote server and transfer files. This guide will use a generated ssh keypair, hence the first assumption above.

  1. Enter the root session (if you haven't already):

    sudo -i

  2. Remount the file system as read-write:

    bin/remountfs_rw

  3. Run these commands to to generate an ssh key for the root user:

    ssh-keygen

  4. Copy the key to the storage server. This will also add the server to .ssh/known_hosts:

    ssh-copy-id user@archiveserver

Step 2: Exports

Run this command to cause the setup processes which you'll resume in the main instructions to use rsync:

export ARCHIVE_SYSTEM=rsync
export RSYNC_USER=<sftp username>
export RSYNC_SERVER=<sftp IP/host>
export RSYNC_PATH=<destination path to save in>

Explanations for each:

  • ARCHIVE_SYSTEM: rsync for enabling rsync
  • RSYNC_USER: The user on the SFTP server
  • RSYNC_SERVER: The IP address/hostname of the destination machine
  • RSYNC_PATH: The path on the destination machine where the files will be saved

An example config is below:

export ARCHIVE_SYSTEM=rsync
export RSYNC_USER=pi
export RSYNC_SERVER=192.168.1.254
export RSYNC_PATH=/mnt/PIHDD/TeslaCam/

Additional options for rsync over ssh can be configured using ~/.ssh/config such as port number. To see all available options visit the man page.

Stay in the sudo -i session return to the section "Set up the USB storage functionality" in the main instructions.