Differences

This shows you the differences between two versions of the page.

--- backups:rdiff_backup [2016/11/10 14:43] – peter
+++ backups:rdiff_backup [2019/11/26 20:30] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Backups - rdiff backup ======
-<file bash rdiff-backup>
-#!/bin/bash
-EXCLUDES="/tmp /var/tmp /proc /sys /selinux /media /dev/shm /mnt"
-OPTIONS="--exclude-device-files --print-statistics --force --ssh-no-compression"
-MAXAGE="1M"
-SRC="/"
-DST="server2.firma.pl::/backup-zdalny/server1"
-for i in $EXCLUDES; do
-  OPTIONS="$OPTIONS --exclude $i"
-done
-rdiff-backup $OPTIONS $SRC $DST
-STATUS=$?
-msg=""
-if [ $STATUS -eq 0 ]; then
-  msg="$msg Backup OK"
-  rdiff-backup --force --remove-older-than $MAXAGE $DST
-  if [ $? -eq 0 ]; then
-    msg="$msg Cleaning OK"
-  else
-    msg="$msg Failed to remove older than $MAXAGE"
-  fi
-else
-  msg="$msg Failed to copy"
-fi
-echo $msg
-exit $STATUS
-</file>
-===== Example usage =====
-We have two systems: host1 and host2.
-  * The script to launch the backup has to be on host1, which will connect to host2 by SSH and retrieves data from it.
-  * Both computers must have the rdiff-backup script installed, preferably at the same version.
-On the host1 (the command is performed using the root account):
-We create a key pair to log in via SSH:
-<code bash>
-ssh-keygen -t rsa
-</code>
-Save files to the default location; when prompted for a password hit enter (a blank password / no password).
-Copy the public key for host2.
-<code bash>
-scp .ssh / id_rsa.pub host2:
-</code>
-On host2 (command is performed using the root account):
-We create (if there is no .ssh directory already) and set it appropriate permissions:
-<code bash>
-mkdir .ssh
-chmod 700 .ssh
-</code>
-We put the public key of host1 in .ssh/authorized_keys.
-<code bash>
-cat id_rsa.pub > .ssh/authorized_keys
-chmod 600 .ssh/authorized_keys
-</code>
-Edit the .ssh/authorized_keys in front of the key, but in the same line we add (ssh-rsa ...):
-<file bash .ssh/authorized_keys>
-command="/usr/bin/rdiff-backup --server" ssh-rsa ...........
-</file>
-Configure SSHD:
-<file bash /etc/ssh/sshd_config>
-PermitRootLogin forced-commands-only
-StrictMode on
-</file>
-# The later command enforces permissions and .ssh .ssh/authorized_keys were respectively 700 and 600.
-Restart SSHD
-<code bash>
-/etc/init.d/sshd restart
-</code>
-And ready. On the host1, we can do test:
-<code bash>
-rdiff-backup --print-statistics host2::/etc /tmp/etc2
-</code>
-This will perform the backup without asking for a password.