Unix System Administrator

Course details

Programmers (C, C++, Java, Python, Perl, Ruby etc) , Automation Experts, System Administrators, Virtualization Administrators (Vmware , Citrix), Database Experts ( Database Developer, DBAs) all need to know Linux / Unix, Testers, Support Personnel (App support).

This is the operating system of choice on mobiles, computers, application and database servers, data centers running in 80% of the world's data centers.

Today, learning basics of Unix / Linux is not a choice anymore, its required on almost all jobs and employers prefer candidates with knowledge of Linux due to its wide penetration and use in all technology platforms.

Course Content:

Introduction to Linux Distributions

• Linux distributions

Installing Linux

• Obtaining Linux
• Anaconda installer
• Installation steps

Linux Boot Process

• Linux boot process
• init process
• SysV init runlevels
• /etc/rc.d directory
• Configure services for runlevels
• Xinetd service

System Configuration

• Configuring system time
• Using Network Time Protocol (NTP)
• System configuration files
• The proc filesystem

Package Management

• Introduction to Linux package management
• The rpm utility
• Public Yum servers
• Yum configuration
• Yum utility

Automate Tasks

• Automating system tasks
• Configuring cron jobs
• Other cron directories and files
• The crontab utility
• The at and batch utilities

User and Group Administration

• User and group configuration files
• Adding a user account
• Modifying and deleting user accounts
• Password configuration
• User Manager Tools
• su and sudo commands

File Systems

• Disk Partitions
• Partition Table Manipulation Utilities
• File System Types
• Making File Systems
• Mounting File Systems
• The /etc/fstab File
• Swap Space

Network Configuration

• Network interfaces
• Network configuration files
• Network interface utilities
• Address Resolution Protocol (ARP)
• The route utility

File Sharing

• NFS server configuration
• The /etc/exports file
• Starting the NFS services
• The exports utility
• NFS client configuration
• Automounting filesystems

OpenSSH Service

• OpenSSH configuration
• Using OpenSSH utilities
• The ssh, scp, and sftp utilities
• Using the ssh-keygen utility
• Connecting to a remote system without supplying a password

Kernel Configuration and System Tuning

• System resource tuning and network tuning
• Linux shared memory kernel parameters
• Semaphores kernel parameter
• File handles and other kernel parameters

System Monitoring

• The iostat, mpstat, vmstat, sar, top, netstat, and tcpdump utilities
• How to find out where is the bottleneck for system performance issues , is it the CPU, Memory, Users, Network or Harddisk?

System Logging

• System log file configuration
• syslog.conf
• Facility/Priority-based filters
• Configuring logrotate

Troubleshooting

• Systematic approach to troubleshooting
• Operating system logs
• The dmesg utility
• Troubleshooting resources
• Problem causes
• Boot problems
• NFS problems