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zrepl must be configured before it is started the first time.
- Create the log file /var/log/zrepl.log:
  # service newsyslog restart
- Teach syslogd to redirect facility local0 to the zrepl.log file:
  # service syslogd reload
- Modify the %%PREFIX%%/etc/zrepl/zrepl.yml configuration file
- For remote backups, create the SSH key pair and authorized_keys file
- Enable the zrepl daemon to start automatically at boot:
  # sysrc zrepl_enable="YES"
- Start the zrepl daemon:
  # service zrepl start

For documentation, refer to https://zrepl.github.io/.
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