# Documentation to install backup scripts on a machine and setup postfix to allow email reports
# 20 Mar 2012 Mike Gore
#
# Setup Backup scripts for Linux
# Assume: the host is called hostname.cs.uwaterloo.ca
#         and the owner is userid@cs.uwaterloo.ca

# This document was designed to be cut and past to the bash command line except for postfix config

# Become root
sudo bash
#Install scripts

mkdir /scripts
cp testfree backup README.txt /scripts

# Copy these files to a directory called /scripts

# Copy the this directory to /backups

# Install Postfix for email alerts
apt-get install postfix

# Configure postfix
Postfix Configuration -> Ok
General type of mail configuration:  Internet Site -> Ok	
System mail name:  hostname.cs.uwaterloo.ca -> Ok
Root and postmaster mail recipient:  
Other destinations to accept mail for (blank for none): 
hostname.cs.uwaterloo.ca, hostname.cs, localhost.cs, localhost -> OK
Force synchronous updates on mail queue?  No -> OK
Local networks:    127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 -> OK
Mailbox size limit (bytes): 0 -> OK
Local address extension character: * -> OK
Internet protocols to use: ipv4 -> OK

# Test email by sending a message to your own CS account
# CTRL-D will exit after typing a short test message
mail your-userid@cs.uwaterloo.ca -s test

# Create mount point for backup drive
mkdir /backup

# Setup a backup drive
# Find all of your drives and see if they are partitioned yet
fdisk -l

# Make sure your backup drive is partitioned and formated
# Example: backup drive is /dev/sdb 
# Assume:  for this example we only want a linux partition
#          Note: In dual boot cases you want two partions windows/linux

# Partition the backup disk - only if it has not been done yet
fdisk /dev/sdb
n
p
1
<enter>  - for start
<enter>  - for end
w 	 - write changes
q	 - quit

# formatting example: 
mkfs -t ext4 /dev/sdb1

# update /etc/fstab

# use blkid to get list of drives and their UUID values 
# Note: save the UUID= line of backup partition
blkid

# Add an entry to /etc/fstab using the your own UUID as reported above
# Example:
UUID=43829b3e-56a7-44d2-bf25-faca08a1f964 /backup ext4   errors=remount-r o 0 1
# or with the raw device name - not recommended
/dev/sdb1	/backup ext4   errors=remount-r o 0 1

# Mount the partition to test it - this mounts all partions listed in /etc/fstab
mount -a

# Now list the mounted partitions and make sure your backup partition is there
mount

# Update /etc/crontab to backup root filesystem at midnight and report to userid
# We assume that /backup/root is on another file system 
# We do a freespace test on the target filesystem - in this case /backup
# Send report to local cscf-adm user - can be userid@cs.uwaterloo.ca for off host reports
0 0	* * *	root	/scripts/backup / /backup/root 10000 cscf-adm