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Each flavor of Linux has its own installer with its strong and weak points. It provides you with half-dosen option for installation media:
In all three cases you can automate installation using kickstart. You can also install CentOS on Windows 10.
If you installing from DVD that you burned yourself, please check media before installation: it helps to prevent many nasty problems. It is important to understand that if you have problems with installing from one source (for example DVD) it make sense to try another source. On modern computers you can always use a USB disk instead of DVD.
Please note that it make sense to use custom label for partitions if you use LVM. Also it does not make sense to put root partition on LVM -- if you screw /etc/fstab and your root partition is on LVM you are stuck.
RHEL 6.7 and higher installer (anaconda) does a couple of stupid things that you need to aware of:
Anaconda in RHEL 7 is even less flexible and provides fewer "server templates". It is also more fragile. Partially this is due to presence of systemd, partially due to desire of Red Hat to imitate Windows, which adds complexity. Desire to automate some tasks sometimes backfire.
Here is some information about anaconda adapted from Mark Sobell's book (Practical Guide to Red Hat® Linux®: Fedora™ Core and Red Hat Enterprise Linux, A, 2nd Edition 2005 edition):
The boot: Prompt You can give many different Anaconda commands at a boot: prompt. If you are installing from DVD or CD, you can press RETURN without entering a command to start the installation. Or you can just wait; if you do not type anything for a minute, the installation proceeds as though you pressed RETURN.
Display problems If you have problems with the display during installation, try to give the following command, which turns off video memory, in response to the boot: prompt:
boot: linux nofb
Non-CD installations If you are installing from media other than DVD or CD and that means using FTP, NFS, or HTTP, give the following command in response to the boot: prompt:
boot: linux askmethod
Booting As the system boots, text scrolls on the monitor, pausing occasionally. After a while (up to a few minutes, depending on the speed of the system), the installer displays a graphical or pseudo graphical display, depending on the system you are installing and the commands you gave at the boot: prompt.
All the commands should be types at the boot: prompt like. The fist word of the command is always linux. It can be followed by one of more augments passed to Anaconda. Arguments can be combined. For example, to install Linux in text mode using a terminal running at 115,200 baud, no parity, 8 bits, connected to the first serial device, give the following command (the ,115200n8 is optional):
boot: linux text console=ttyS0,115200n8
The next command installs Red Hat Linux in graphical mode (by default) on a monitor with a resolution of 1024x768, and get the prompt to specify the source of the installation data (CD, FTP site, or other).
boot: linux resolution=1024x768 askmethod
To specify an installation source, use the linux inst.repo= option in grub. For example:
inst.repo=cdrom:device inst.repo=ftp://username:password@URL inst.repo=http://URL inst.repo=hd:device inst.repo=nfs:options:server:/pathIn these examples, cdrom refers to a CD or DVD drive, ftp refers to a location accessible by FTP, http refers to a location accessible by HTTP, hd refers to an ISO image file accessible on a hard drive partition, nfs refers to an expanded tree of installation files accessible by NFS. In RHEL 7 nfsiso is not used as installer is capable to distinguish tree from iso file.
For NFS installation which is probably the most flexible and simple see
ISO images have an SHA256 checksum embedded in them. To test the checksum integrity of an ISO image, at the installation boot prompt, type: linux mediacheck
Following are some of the commands you can give at the boot: prompt.
For more information see Anaconda Boot Options - FedoraProject
Red Hat has well defined remote installation process using Kickstart.
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Mar 15, 2021 | www.thegeekdiary.com
Installing the environment group "Server with GUI"
1. Check the available environment groups :
# yum grouplist Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. There is no installed groups file. Maybe run: yum groups mark convert (see man yum) Available Environment Groups: Minimal Install Infrastructure Server File and Print Server Basic Web Server Virtualization Host Server with GUI Available Groups: Compatibility Libraries Console Internet Tools Development Tools Graphical Administration Tools Legacy UNIX Compatibility Scientific Support Security Tools Smart Card Support System Administration Tools System Management Done2. Execute the following to install the environments for GUI.
# yum groupinstall "Server with GUI" ....... Transaction Summary ==================================================== Install 199 Packages (+464 Dependent packages) Upgrade ( 8 Dependent packages) Total download size: 523 M Is this ok [y/d/N]:The above will install the GUI in RHEL 7, which by default get installed to text mode.
3. Enable GUI on system start up. In RHEL 7, systemd uses 'targets' instead of runlevels. The file /etc/inittab is no more used to change run levels. Issue the following command to enable the GUI on system start.
To set a default target :
# systemctl set-default graphical.targetTo change the current target to graphical without reboot :
# systemctl start graphical.targetVerify the default target :
# systemctl get-default graphical.target4. Reboot the machine to verify that it boots into GUI directly.
# systemctl rebootInstalling core GNOME packages"Server with GUI" installs the default GUI which is GNOME. In case if you want to install only core GNOME packages use :
# yum groupinstall 'X Window System' 'GNOME' .... Transaction Summary =========================================================== Install 104 Packages (+427 Dependent packages) Upgrade ( 8 Dependent packages) Total download size: 318 M Is this ok [y/d/N]:
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Mar 15, 2021 | kapendra.com
Step 1: Install Gnome GUI
Run the following command to install GUI
For CentOS 7:https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-1312971726265182&output=html&h=60&slotname=7232524359&adk=475810333&adf=4289060371&pi=t.ma~as.7232524359&w=468&lmt=1615834166&psa=0&format=468x60&url=https%3A%2F%2Fkapendra.com%2Finstall-convert-a-minimal-installation-into-gui-on-centosrhel-6-7%2F&flash=0&wgl=1&dt=1615834165915&bpp=3&bdt=5549&idt=275&shv=r20210309&cbv=r20190131&ptt=9&saldr=aa&abxe=1&prev_fmts=728x90%2C468x60&correlator=5214860735252&frm=20&pv=1&ga_vid=263473286.1615834166&ga_sid=1615834166&ga_hid=622691513&ga_fc=0&u_tz=-240&u_his=3&u_java=0&u_h=864&u_w=1536&u_ah=864&u_aw=1536&u_cd=24&u_nplug=3&u_nmime=4&adx=364&ady=1446&biw=1536&bih=762&scr_x=0&scr_y=0&eid=42530672%2C21066428%2C31060305&oid=3&pvsid=1400452504347324&pem=31&ref=https%3A%2F%2Fduckduckgo.com%2F&rx=0&eae=0&fc=640&brdim=1536%2C0%2C1536%2C0%2C1536%2C0%2C1536%2C864%2C1536%2C762&vis=1&rsz=%7C%7CoeEbr%7C&abl=CS&pfx=0&fu=8192&bc=31&ifi=3&uci=a!3&btvi=2&fsb=1&xpc=7Ex3Qs11m5&p=https%3A//kapendra.com&dtd=287
# yum group install "GNOME Desktop" "Graphical Administration Tools"For RHEL 7:# yum groupinstall "Server with GUI"... ... ... Step 2: Make GUI Default Mode For Every RebootWith the upgrade of Centos/RHEL 7 from CentOS/RHEL 6 concept of runlevel has been changed to systemd so run following command
For RHEL/CentOS 7:ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.targ... ... ...
Step 3: Reboot the Server# rebootFew Short Cut CommandsGUI to CLI : Ctrl + Alt + F6
CLI to GUI : Ctrl + Alt + F1
Kapendra http://kapendra.com Love to write technical stuff with personal experience as I am working as a Sr. Linux Admin. and every day is a learning day and Trust me being tech geek is really cool.
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To allow anaconda to manipulate ext4 filesystems, it is enough to start the installer using the "ext4" parameter on the command line:
linux ext4[*] Of course, any other additional options can be added to the command line.
Subsequently the ext4 filesystem will be presented by Disk Druid among all other filesystems. Mind that because of GRUB limitations, it is mandatory to use a separate /boot partition formatted as ext2 or ext3 if your root ( / ) partition is ext4.
For kickstart based installations, just use ext4 instead of ext3 as filesystem. No other change is necessary.
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May 20, 2005 | InformIT
This chapter steps through the process of installing either Red Hat Enterprise Linux or Fedora Core. Frequently, the installation is quite simple, especially if you have done a good job of planning. Sometimes you may run into a problem or have a special circumstance; this chapter gives you the tools to use in these cases.
IN THIS CHAPTER
- Booting the System: The boot: Prompt
- The Anaconda Installer
- Using Disk Druid to Partition the Disk
- Setting Up a Dual-Boot System
- The X Window System
- system-config-display: Configuring the Display
- More Information
Chapter 2 covered planning the installation: requirements, an upgrade versus a clean installation, classes of installations, planning the layout of the hard disk, how to obtain the files you need for the installation including how to download and burn ISO (CD) images, and collecting the information about the system you will need during installation. This chapter steps through the process of installing either Red Hat Enterprise Linux or Fedora Core. Frequently, the installation is quite simple, especially if you have done a good job of planning. Sometimes you may run into a problem or have a special circumstance; this chapter gives you the tools to use in these cases.
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Your company just bought 30 new machines, and it’s your job to install Linux on them. If you’re using Red Hat Linux, the kickstart install process can save you a lot of time.Kickstart automates the install process, so that it becomes as simple as putting the floppy in, turning the machine on, and coming back 15 minutes later. Kickstart is especially useful if you have a number of machines with similar configurations. In the simplest case, all you need is an up-to-date boot floppy, a kickstart config file, and an installation CD-ROM. For trickier installs, you might also need a DHCP or bootp server, an NFS server, and a DNS server.
A kickstart installation requires that you predefine all necessary installation data in a kickstart config file. The kickstart config file can be split into three parts — the preinstall, the packages, and the post-install.
The preinstall section of the config file is used to answer the questions that are usually asked before the install starts. The options, which will be described below, are: lang, network, {nfs|cdrom|url|harddrive}, {device|noprobe}, keyboard, zerombr, clearpart, part, {install|upgrade}, mouse, timezone, {xconfig|skipx}, rootpw, auth, lilo. See “Configuration Options” for a description of the preinstall section options.
http://metalab.unc.edu/LDP/HOWTO/KickStart-HOWTO.html
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Chapter 9. Installing Using Anaconda
Josh's Linux Guide -- contains several useful essays
See also:
Home Server with Linux - document that explains how to share a modem and printer with a Windows 95 machine
The following mini-HOWTOs are available:
Society
Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers : Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism : The Iron Law of Oligarchy : Libertarian Philosophy
Quotes
War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda : SE quotes : Language Design and Programming Quotes : Random IT-related quotes : Somerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose Bierce : Bernard Shaw : Mark Twain Quotes
Bulletin:
Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 : Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law
History:
Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds : Larry Wall : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOS : Programming Languages History : PL/1 : Simula 67 : C : History of GCC development : Scripting Languages : Perl history : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history
Classic books:
The Peter Principle : Parkinson Law : 1984 : The Mythical Man-Month : How to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite
Most popular humor pages:
Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor
The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D
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Last modified: March 15, 2021
