Category: System Administration

Ubuntu Basics – How to Set A Static IP

This tutorial explains how to set a static IP on an Ubuntu system from the command line.

Step 1:

sudo nano /etc/network/interfaces

Step 2:

If DHCP has configured, you will see

auto lo eth0

iface lo inet loopback

iface eth0 inet dynamic

Step 3:

Change dynamic value to static and keep adding Values shown in Step 4

Step 4:

auto lo eth0

iface lo inet loopback

iface eth0 inet static

address 192.168.1.2

netmask 255.255.255.0

gateway 192.168.1.1

dns-nameservers 8.8.8.8 8.8.4.4

Step 5:

After saving the changes, Restart the Network service or Restart the OS if required

sudo /etc/init.d/networking restart

OR

Sudo shutdown -r 00

All about DATA backups & rotation

DATA backup is to make copies of particular data in order to use those copies for restoring the information if a failure occurs (a data loss event due to deletion, corruption, theft, viruses etc.).

there are four common backup types implemented and generally used in most of these programs: full backup, differential backup, incremental backup and mirror backup.

backup-types

  • Full backup

Full back up is the starting point for all other types of backup and contains all the data in the folders and files that are selected to be backed up.

 

  • Differential backup

Differential backup contains all files that have changed since the last FULL backup. The advantage of a differential backup is that it shortens restore time compared to a full back up or an incremental backup.

 

  • Incremental backup

Incremental backup stores all files that have changed since the last FULL, DIFFERENTIAL OR INCREMENTAL backup. The advantage of an incremental backup is that it takes the least time to complete.

 

  • Mirror backup

Mirror backup is identical to a full backup, with the exception that the files are not compressed in zip files and they cannot be protected with a password. A mirror backup is most frequently used to create an exact copy of the source data.

 

  • Smart backup

Smart backup is a backup type which combines the full, differential and incremental backup types with cleanup operations in order to efficiently manage the backups according with the backup settings and the free disk space in destination. The Smart backup type starts with a full backup.

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