Book Image

Mastering Python Scripting for System Administrators

By : Ganesh Sanjiv Naik
Book Image

Mastering Python Scripting for System Administrators

By: Ganesh Sanjiv Naik

Overview of this book

Python has evolved over time and extended its features in relation to every possible IT operation. Python is simple to learn, yet has powerful libraries that can be used to build powerful Python scripts for solving real-world problems and automating administrators' routine activities. The objective of this book is to walk through a series of projects that will teach readers Python scripting with each project. This book will initially cover Python installation and quickly revise basic to advanced programming fundamentals. The book will then focus on the development process as a whole, from setup to planning to building different tools. It will include IT administrators' routine activities (text processing, regular expressions, file archiving, and encryption), network administration (socket programming, email handling, the remote controlling of devices using telnet/ssh, and protocols such as SNMP/DHCP), building graphical user interface, working with websites (Apache log file processing, SOAP and REST APIs communication, and web scraping), and database administration (MySQL and similar database data administration, data analytics, and reporting). By the end of this book, you will be able to use the latest features of Python and be able to build powerful tools that will solve challenging, real-world tasks
Table of Contents (21 chapters)

Error log

In this section, we are going to learn about the error log. The related directives for the error log are as follows:

  • ErrorLog
  • LogLevel

The location and the name of server log files are set by the ErrorLog directive. It is the most important log file. The Apache httpd sends the information in this and also records produced while processing. Whenever a problem occurs with the server, this will be the first place to look. It contains the details of the things that went wrong and the process of fixing it.

The error log is written into a file. On Unix systems, the errors can be sent to syslog by the server or you can pipe them to your program. The first thing in that log entry is the date and time of the message. The second entry records the severity of the error.

The LogLevel directive handles the errors sent to the error log by restricting the severity level. The third...