LINUX LEVEL 2 – ADVANCED LINUX ADMINISTRATION

This five-day course provides the participant with the knowledge to perform system administrator tasks relating to the administration of filesystems, including set uid bit for permissions, partition management, mounting and unmounting, disk diagnostics, RAID, LVM and NFS disk types, and disk quotas. The course finishes with administration of hardware devices, basic networking, including TCP/IP, and system troubleshooting

Linux Level I or equivalent experience.

Special Permission: setuid
Special Permission: setgid
Special Permission: sticky bit
Access Control Lists

Device names
Virtual filesystems vs. physical filesystems
Why have partitions?
Which partitions should you create?
Creating and modifying partitions with fdisk
Creating and modifying partitions with parted
The mkfs command
The mke2fs command
Create a partition label

What is mounting?
The mount command
Mount rules
The umount command
umount rules
Mounting automatically at boot
The mount -a command
The umount -a command
Review: the df command
Mounting CDs and floppy disks
Swap partitions and files

Filesystem details
The mke2fs command
The ext2 and ext3 filesystems
Why filesystems break
Fixing filesystems with fsck
fsck examples
Displaying filesystem attributes
Modifying filesystem attributes

RAID basics
Hardware & software RAIDs
RAID levels
The mdadm command
RAID disk recovery

What is LVM?
LVM terms
Initializing hard disks or partitions
Creating a Volume Group
Activating and deactivating a Volume Group
Deleting a Volume Group
Deleting a Physical Volume from a Volume Group
Adding a Physical Volume to a Volume Group
Displaying Volume Group information
Displaying Physical Volume information
Creating a Logical Volume
Displaying Logical Volume information
Using a Logical Volume
Extending a Logical Volume
Reducing a Logical Volume
Making backups using snapshot
Deleting a Logical Volume

What is NFS?
NFS benefits
NFS daemons
Starting server daemons
Setting up a NFS server
Setting up a NFS client
Using automount

Configuring a filesystem to support disk quotas
Initializing the disk quota database
Assigning quotas to user accounts
Assigning quotas to group accounts
Working with soft limits
Displaying quota information
Issuing warnings
Turning quota checking on and off

Compatibility
Device Nodes
Displaying hardware information
Configuring hardware

X Window System components
The process of starting X Window Server
X Window security with xhost
X Window security with xauth
X Window security with ssh
X Font Server

Scripting basics
Review of Variable Usage
Review of Quoting
Arguments
if statements
Test conditions
while loops
until loops
The break statement
The continue statement
The case statement
for loops
Exit Status
Functions
Advanced Input/Output
Signals
Debugging

TCP/IP-based protocols
IP addresses
Subnetting
IP routing
DNS
DHCP

Configuring a network interface
Global network settings
DNS client settings
The Name Service Switch configuration file
Network configuration utilities

CUPS
LPD and LPRng
Setting up a CUPS printer
Printing Files
Monitoring the print queue
Canceling print jobs
Specifying a default printer
Printer classes
Checking printer status
Managing the print queue
Printing with different priorities
Controlling printer status
Moving print jobs
Recovering from printer problems
Removing a printer

User Access Problems
System Boot Problems
Problems with the X Window System
Networking Problems
Filesystem Problems
Using the Troubleshooting Steps
Using Recovery Run Levels
The Rescue Environment