Chapter 1 RHCSA Notes - Installation

About RHEL9

  • Kernel 5.14
  • Released May 2019
  • Built along side of Fedora 34
  • Installer program = Anaconda
  • Default Bootloader = GRUB2
  • Default automatic partitioning = /boot, /, swap
  • Default desktop environment = GNOME

Installation Logs

/root/anaconda-ks.cfg Configuration entered

/var/log/anaconda/anaconda.log Contains informational, debug, and other general messages

/var/log/anaconda/journal.log Stores messages generated by many services and components during system installation

/var/log/anaconda/packaging.log Records messages generated by the dnf and rpm commands during software installation

/var/log/anaconda/program.log Captures messages generated by external programs

/var/log/anaconda/storage.log Records messages generated by storage modules

/var/log/anaconda/syslog Records messages related to the kernel

/var/log/anaconda/X.log Stores X Window System information

Note: Logs are created in /tmp then transferred over to /var/log/anaconda once the install is finished.

6 Virtual Consoles

  • Monitor the installation process.
  • View diagnostic messages.
  • Discover and fix any issues encountered.
  • Information displayed on the console screens is captured in installation log files.

Console 1 (Ctrl+Alt+F1)

  • Main screen
  • Select language
  • Then switches default console to 6

Console 2 (Ctrl_Alt+F2)

  • Shell interface for root user

Console 3 (Ctrl_Alt+F3)

  • Displays install messages
  • Stores them in /tmp/anaconda.log
  • Info on detected hardware, etc.

Console 4 (Ctrl_Alt+F4)

  • Shows storage messages
  • Stores them in /tmp/storage.log

Console 5 (Ctrl_Alt+F5)

  • Program messages
  • Stores them in /tmp/program.log

Console 6 (Ctrl_Alt+F6)

  • Default Graphical configuration and installation console screen

Console 1 Brings you to the log in screen. Console 2 does nothing. Console 3-6 all bring you to this log in screen

![[Pasted image 20230624051043 1.png]]

Lab Setup

VM1

server1.example.om 
192.168.0.110 
Memory: 2GB 
Storage: 1x20GB 
2 vCPUs

VM2

server2.exmple.om 
192.168.0.120 
Memory: 2048 
Storage: 1x20GB 
	4x250 MB data disk 
	1x5GB data disk 
2 vCPUs

Setting up VM1

Download the disc iso on Redhat’s website: https://access.redhat.com/downloads/content/rhel

Name RHEL9-VM1 Accept defaults.

Set drive to 20 gigs

press “spe” to hlt utooot

Selet instll

selet lnguge

onfigure timezone under time & dte

go into instlltion destintion nd li “done”

Networ nd hostnme settings

  1. hnge the hostnme to server1.exmple.om
  2. go to IPv4 settings in networ nd host nd set to mnul ddress: 192.168.0.110 netms 24 gtewy 192.168.0.1 then sve
  3. slide the on/off swith in the min menu to on

Set root pssword

Chnge the oot order

  1. power off the vm
  2. Set oot sequene to hrd dis first then optil, remove floppy

Accept license terms and rete user

ssh from host os with putty

Issue these Commnds after set up

whoami 
hostname 
pwd 
logout or ctrl+d

Using cockpit

  • Web gui for managing RHEL system
  • Comes pre-installed
    • if not then install with:
    sudo dnf install cockpit
  • must enable cockpit socket 
    sudo systemctl enable --now cockpit.socket
  • https://yourip:9090

Labs

Lab:

Enable cockpit.socket:

sudo systemctl enable --now cockpit.socket

In a web browser, go to https://<your-ip>:9090