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21bSystemLogging2
Course: CENT 253, Fall 2009School: University of Hawaii -...
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253 CENT System Administration of UNIX Log Rotation logrotate Pages 666-670 1 logrotate Utility Utility used to rotate log files. Examine the contents of /var/log directory and look for sequential file extensions. logrotate performs daily maintenance on log files discards obsolete log backups rotates log backups, etc. creates new log files 2 logrotate Script Ensures log files do not get too large....
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253 CENT System Administration of UNIX
Log Rotation logrotate Pages 666-670
1
logrotate Utility
Utility used to rotate log files. Examine the contents of /var/log directory and look for sequential file extensions. logrotate performs daily maintenance on log files discards obsolete log backups rotates log backups, etc. creates new log files
2
logrotate Script
Ensures log files do not get too large. /etc/cron.daily/logrotate (run daily by cron daemon). Logrotate config file: /etc/logrotate.conf can specify: compression, deletion or intervals size; how many compressed versions.
3
/etc/logrotate.conf
Logrotate configuration file Rotates log files once per week as default
Options include weekly, daily, monthly, or size
Number of files to keep in history
rotate #
Whether to compress rotated log files Drop directory for application logrotate fil...
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University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 20PACKAGE MANAGEMENTNAME _OVERVIEW: In this lab you will explore managing software packages from the command line. PART 1: EXERCISES 1. Complete Exercise 7-5, RPM Package-Related Operations, on pages 314-315 in the textbook. PART 2
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 21ASYSTEM LOGGING 1NAME _OVERVIEW: In this lab you will explore managing the system logging service. PART 1: PRE-CONFIGURATION 1. Using YaST, go to System Services (Runlevel Services) and locate any references to automaticallygene
University of Hawaii - Hilo - CENT - 253
CENT 253 System Administration of UNIXHardware Devices Section 131OverviewHardware Information & Overview Removable System HardwarePCMCIA Devices Hot Pluggable Devices Fire WireNonremovable System HardwarePCI DevicesFile System Device No
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 22HARDWARE DEVICESNAME _OVERVIEW: In this lab you will explore system hardware information from the command line. PART 1: HARDWARE INFORMATIONCollect the following information about your machine's hardware, and store it in the spe
University of Hawaii - Hilo - CENT - 253
CENT 253 System Administration of UNIXRAIDChapter 13 Mass Storagehttp:/en.wikipedia.org/wiki/RAID http:/www.tldp.org/HOWTO/Software-RAID-HOWTO.html mdadm man page1RAIDRedundant Array of Inexpensive/Independent Disks Goals:provide fault tol
University of Hawaii - Hilo - CENT - 253
CENT 253 System Administration of UNIXLogical Volume Managementhttp:/en.wikipedia.org/wiki/Logical_volume_management http:/www.novell.com/coolsolutions/feature/14735.html http:/www.hccfl.edu/pollock/AUnix1/LVM.htm1Logical Volume ManagementUse
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 23ARAIDNAME _For this exercise, you will create a RAID array out of disk partitions which all reside on the same disk. This is not something you would want to do in the real world. Whatever you are trying to achieve with a RAID arr
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 23BLOGICAL VOLUME MANAGEMENTNAME _PART 1: USE THE COMMAND LINE TO CREATE A VOLUME GROUP AND 2 LOGICAL VOLUMES1. Use the fdisk command to remove any RAID partitions left over from the previous exercise. Write your changes to disk,
University of Hawaii - Hilo - CENT - 253
CENT 253 System Administration of UNIXIntroduction to Shell Scripts 11ScriptsA script is a (text) file that contains a list of commands to execute A UNIX/Linux script is similar to a DOS batch file There are two basic ways to use scripts in the
University of Hawaii - Hilo - CENT - 253
CENT 253 System Administration of UNIX Introduction to Scripts 21Script Input: Command Line ArgumentsCommand line arguments can be used with scripts, as well as with regular commands. Bash uses the following positional parameters within scripts
University of Hawaii - Hilo - CENT - 253
CENT 253 Lab 25ASHELL SCRIPTS 1NAME _PART 1: CREATE A SCRIPT TO DRIVE THE GNUPLOT PROGRAM1. Use YaST to verify that the gnuplot and eog packages are installed. If not, install them using YaST. 2. Generate a simple text file, ~/gnuplot.txt, tha
University of Hawaii - Hilo - CENT - 253
CENT 253 Lab 25B CHALLENGE LABSHELL SCRIPTS 2NAME _Create a short executable bash script named ~/bin/ispython that expects a single command line argument, which is a file name. If the first line of the named file is exactly "#!/usr/bin/python"
University of Hawaii - Hilo - CENT - 253
CENT 253 REVIEW FOR EXAM 3 WRITTEN EXAM NEW MATERIAL FOR EXAM 3 SECTION 7 PACKAGE MANAGEMENT1. Describe two formats commonly used for software packages, including a description of the methods used to bundle and/or compress them. 2. How is a source R
University of Hawaii - Hilo - CENT - 253
CENT 253REVIEW FOR EXAM 3 WRITTEN EXAMNEW MATERIAL FOR EXAM 3 SECTION 7 PACKAGE MANAGEMENT1. Describe two formats commonly used for software packages, including a description of the methods used to bundle and/or compress them. 2. How is a source
Georgia Tech - ISYE - 4231
Project 2 - Set Covering/Partitioning Engineering Optimization ISYE 4231, Section AGeorgia Institute of Technology Due: Wednesday, April 16th Collaboration Policy: You are allowed to discuss your project with other students. You must choose your own
Georgia Tech - GROUP - 8803
Smart SeekCS 8803 AIAD (Spring 2008) ProjectGroup#22 Ajay Choudhari, Avik Sinharoy, Min Zhang, Mohit Jain1Outline Problem background and motivation Project Goals System architecture The social network toolFacebook app Gathering user data
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 01Refer to:LINUX INSTALLATIONNAME: _Section 1: Getting Started with Linux: Novell's Guide to CompTIA's Linux+Overview: In this lab you will be installing and configuring SUSE Linux Enterprise Desktop 10 using an installation D
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 02LINUX INTRODUCTIONNAME _OVERVIEW: In this lab you will explore Linux desktop environments and features. Since we are using a different version of SUSE Linux than used in the textbook, there may be some differences between the exe
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 04FILE LINKS & FINDNAME _OVERVIEW: In this lab you will explore utilities for finding files and searching for text in Linux. PART 1: EXERCISES1. Complete Exercise 5-7 Link files on page 173 in the textbook.2. Complete Exercise 5
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 05GREPNAME _OVERVIEW: In this lab you will the grep utility for searching for text in Linux. You can have me review all of the work at one time, if desired. PART 1: EXERCISES 1. Complete Exercise 5-9 Search File Content on pages 18
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 07 USING THE LINUX SHELL I NAME _ OVERVIEW: In this lab you will experiment with using different aspects of the Linux shell. PART 1: EXERCISES 1. Complete Exercise 6-1 Execute Commands on the Command Line, on pages 220-221 in the textboo
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 08USING THE LINUX SHELLIINAME _OVERVIEW: In this lab you will experiment with using different aspects of the Linux shell. PART 1: EXERCISES 1. Complete Exercise 6-3 Use the alias Command, on page 229 in the textbook. 2. Complete
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 10 USERS & GROUPS NAME _ OVERVIEW: In this lab you will experiment with managing user and group accounts from the command line. PART 1: EXERCISES 1. Complete Exercise 7-1, Archive Files, on pages 271-272 in the textbook. PART 2: ADDING U
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 13 DISK QUOTAS NAME _ OVERVIEW: In this lab you will experiment with managing user and group accounts from the command line. PART 1: EXERCISE 1. Complete Exercise 7-4, Disk Quotas, on pages 288-290 in the textbook. Note the following: Y
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 14A PROCESSES & JOBS NAME _ OVERVIEW: In this lab you will experiment with processes and jobs. PART 1: EXERCISES 1.Complete Exercise 8-1, Control Processes (form GUI and command line), on pages 351-353 in the textbook.KDE System Gua
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 14B PROCESSES & JOBS NAME _ OVERVIEW: In this lab you will experiment with process priorities and services (daemons). PART 1: EXERCISES 1. Complete Exercise 8-2, Manage Linux Processes and Services Part II, on pages 357-358 in the textb
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 15 CRON AND AT NAME _ OVERVIEW: In this lab you will experiment with using the cron and at daemon services. PART 1: EXERCISES 1.Complete Exercise 8-5, Schedule Jobs with cron and at on pages 381-384 in the textbook.PART 2: SCHEDULING
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 16 RUNLEVELS AND SYSTEM INITIALIZATION NAME _ OVERVIEW: In this lab you will experiment with runlevels and system initialization. PART 1: EXERCISES 1. 2. Complete Exercise 8-3, Work with Runlevels, on pages 363 -344 in the textbook. Not
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 17AGRUB BOOTLOADERNAME _OVERVIEW: In this lab, you are going to copy (not move!) your existing kernel and initrd files to a new location, and modify your menu.lst file appropriately to boot the newly created kernel. 1. Use root use
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 17B TROUBLESHOOTING 1 PART 1 CREATING A BOOT FLOPPYIn this part of the assignment you will create a boot floppy. 1. Open a terminal window and su to the root account. 2. Get a floppy disk from the instructor's desk (top drawer).NAME _
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 20 PACKAGE MANAGEMENT NAME _ OVERVIEW: In this lab you will explore managing software packages from the command line. PART 1: EXERCISES 1.Complete Exercise 7-5, RPM Package-Related Operations, on pages 314-315 in the textbook.PART 2:
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 22 HARDWARE DEVICES NAME _ OVERVIEW: In this lab you will explore system hardware information from the command line. PART 1: HARDWARE INFORMATIONCollect the following information about your machine's hardware, and store it in the specif
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 23ARAIDNAME _For this exercise, you will create a RAID array out of disk partitions which all reside on the same disk. This is not something you would want to do in the real world. Whatever you are trying to achieve with a RAID arr
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 23B LOGICAL VOLUME MANAGEMENT NAME _ PART 1: USE THE COMMAND LINE TO CREATE A VOLUME GROUP AND 2 LOGICAL VOLUMES1. 2. Use the fdisk command to remove any RAID partitions left over from the previous exercise. Write your changes to disk,
University of Hawaii - Hilo - CENT - 253
CENT 253 Lab 25ASHELL SCRIPTS 1NAME _PART 1: CREATE A SCRIPT TO DRIVE THE GNUPLOT PROGRAM1. Use YaST to verify that the gnuplot and eog packages are installed. If not, install them using YaST. 2. Generate a simple text file, ~/gnuplot.txt, tha
University of Hawaii - Hilo - CENT - 253
CENT 253 Lab 25B CHALLENGE LABSHELL SCRIPTS 2NAME _Create a short executable bash script named ~/bin/ispython that expects a single command line argument, which is a file name. If the first line of the named file is exactly "#!/usr/bin/python"
University of Hawaii - Hilo - CENT - 253
CENT 253 LAB 26 LINUX TROUBLESHOOTING 2 PART 1 BUGGING YOUR SYSTEM1. 2. 3. 4.NAME _In this part of the assignment you will install some examples of possible problems with Linux. Open a terminal window and su to the root account. Download the fil
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 05ATEXT PROCESSINGNAME _1. Create the file ~/bashusers.txt, which contains lines from the /etc/passwd file which contain the text /bin/bash. 2. Create the file ~/nostdhome.txt, which contains only lines from the /etc/passwd file
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 05ATEXT PROCESSINGNAME _1. Create the file ~/bashusers.txt, which contains lines from the /etc/passwd file which contain the text /bin/bash. 2. Create the file ~/nostdhome.txt, which contains only lines from the /etc/passwd file
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 061.PROCESSESNAME _In order to have a fixed set of processes to examine, you are to take a snapshot of all current processes on your machine. Use the following sequence of commands to first capture the headers for the columns o
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 06PROCESSESNAME _1. In order to have a fixed set of processes to examine, you are to take a snapshot of all current processes on your machine. Use the following sequence of commands to first capture the headers for the columns o
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 08References:LINUX INSTALLATIONNAME: _Chapter 8 in The Complete Guide to Linux System AdministrationWhat you need to do: Install Fedora Core 4 on the removable hard drive following the information provided below. For the pu
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 08References:LINUX INSTALLATIONNAME: _Chapter 8 in The Complete Guide to Linux System AdministrationWhat you need to do: Install Fedora Core 4 on the removable hard drive following the information provided below. For the pu
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 09AGRUB BOOTLOADERNAME _You are going to copy (not move!) your existing kernel and initrd to a new location, and modify your grub.conf appropriately to boot the newly created kernel.1. 2. 3. 4.Create the directory /kernel. U
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 09AGRUB BOOTLOADERNAME _You are going to copy (not move!) your existing kernel and initrd to a new location, and modify your grub.conf appropriately to boot the newly created kernel. 1. Create the directory /kernel. 2. Use the c
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 09BPart 1: Exploring /etc/inittabSYSTEM INITIALIZATIONNAME _1. As a precaution, make a backup of your /etc/inittab file, by copying it to the file /etc/inittab.prelab9b 2. Make the following changes to your /etc/inittab file. I
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 09BPart 1: Exploring /etc/inittabSYSTEM INITIALIZATIONNAME _1. As a precaution, make a backup of your /etc/inittab file, by copying it to the file /etc/inittab.prelab9b 2. Make the following changes to your /etc/inittab file. I
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 10BSWAP SPACE AND TUNINGNAME _Part 1: This exercise will use the first partition created in the previous assignment. The next to the last partition of the specified drive should be about 128 megabytes in size, and have a partiti
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 10BSWAP SPACE AND TUNINGNAME _Part 1: This exercise will use the first partition created in the previous assignment. The next to the last partition of the specified drive should be about 128 megabytes in size, and have a partiti
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 10C PACKAGE MANAGEMENT NAME _ Part 1:In this part, you will use the rpm package management tool to install and update a package file (or a set as needed).1. Using the Fedora Core 4 web site, http:/download.fedora.redhat.com/pub/fedor
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 10CPACKAGE MANAGEMENTNAME _Part 1:In this part, you will use the rpm package management tool to install and update a package file (or a set as needed).1. Using the Fedora Core 4 web site, http:/download.fedora.redhat.com/pub/fe
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 11Agroupadd groupnameUSER & GROUP ACCOUNTSNAME _Part 1: In this exercise, you will be adding users to groups. If the group you need does not exist, you will have to make it using the groupadd command. It is very simple and take
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 11AUSER & GROUP ACCOUNTSNAME _Part 1: In this exercise, you will be adding users to groups. If the group you need does not exist, you will have to make it using the groupadd command. It is very simple and takes only one argument
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 11BSPECIAL PERMISSIONSNAME _Part 1: Create a new user account for yourself and 3 alternate accounts. 1. Create a new user account for yourself choosing any username that you want to use. Guidelines for usernames are No more tha
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 11BSPECIAL PERMISSIONSNAME _Part 1: Create a new user account for yourself and 3 alternate accounts. 1. Create a new user account for yourself choosing any username that you want to use. Guidelines for usernames are No more tha
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 13ASYSTEM & KERNEL MANAGEMENTNAME _Configure the /etc/syslog.conf configuration file such that messages which match the following criteria are routed appropriately. Do not modify any of the original lines found in the file. 1. M
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 13BRAID AND LVMNAME _Part 1: RAID. For this exercise, you will compose a RAID array out of disk partitions which all reside on the same disk. This is not something you would want to do in the real world. Whatever you are trying
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 13BRAID AND LVMNAME _Part 1: RAID. For this exercise, you will compose a RAID array out of disk partitions which all reside on the same disk. This is not something you would want to do in the real world. Whatever you are trying
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 14SCRIPTSNAME _1. Generate a simple text file, ~/script.gnuplot, that will act as script to drive gnuplot. When gnuplot reads your script from stdin, it should generate a plot of a simple mathematical function, such as x-squared
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 14SCRIPTSNAME _1. Generate a simple text file, ~/script.gnuplot, that will act as script to drive gnuplot. When gnuplot reads your script from stdin, it should generate a plot of a simple mathematical function, such as x-squared
University of Hawaii - Hilo - CENT - 253
CENT 252 ASSIGN 16 HARDWARE AND DEVICE CONFIGURATIONNAME _Part 1: Collect the following information about your machine's hardware, and store it in the specified files. Each file should contain a single word answer. File ~/lab16.1/cpuspeed ~/lab16