Unofficial RHCSA Exam setup at home PC using Vagrant/Ansible

Practice RHCSA on server1 and server2 by interrupting grub to boot into single-user mode, reset the root password to redhat, and enable FirewallD and SELinux to survive reboot.

Enable the base OS and app stream repositories on two servers by adding repo URLs with dnf config-manager --add-repo, log in via MobaXterm, and verify packages with dnf repolist.

Set the server time zone to Asia/Kolkata and enable ntp synchronization with timedatectl. Install and start chrony, verify the ntp sync, and configure the chrony pool 2.rhel.pool.ntp.org.

Verify server 1 has the specified ip, gateway, and dns with nmcli; if missing, modify ethernet settings to set IPv4 addresses, dns, gateway, manual method, then reload and restart networking.

Configure a secondary ipv4 and ipv6 address statically on a live interface using nmcli, verify interface status, apply correct netmasks, and reload the connection.

Enable packet forwarding on server 1 persistently by setting net.ipv4.ip_forward=1 in sysctl.conf and verify after reboot, with SELinux temporarily disabled to apply changes.

Set the system to boot into multi-user.target by default and enable visible boot messages by editing the grub cmdline to remove quiet, then regenerate grub.cfg and reboot to verify.

Create a 3 GB volume group named vgexample on server 2 by preparing sdb, creating a 3 GB partition for Linux LVM, and running pvcreate and vgcreate.

Create a new 1 GB logical volume named LV Exam in the vg exam volume group, then run lvs and lsblk to verify the volume.

Format the logical volume with the XFS file system and mount it on /mnt/lvexample. Configure fstab with the UUID to ensure the file system mounts persistently on reboot.

Extend the xfs file system on lvexam by 1 gb using lvextend with plus option, then grow the filesystem with xfs_grow after confirming vg free space.

Create a 4 TB thin provisioned volume with vdo on disk sdc after installing vdo and kvdo and enabling the repositories.

Install httpd, start and enable the service, create an index.html with a welcome message, and configure firewall rules for http and https; verify with curl and browser.

Use the find command to locate files larger than 4 MB in a directory, copy them to a target folder, and save the results to a file.

Write a shell script named shikhar.sh that uses the argument to print 'Shikhar Classes are good for Linux certifications' or 'Shikhar Classes are best for learning Ansible'; otherwise show usage.

Create users Amit, Vivek, John, and Sam; place important file in each home; enforce eight-character passwords with 60-day expiration; add Amit and Vivek to Delhi, John and Sam to UK.

Practice setting directory ownership with chown and controlling access using chmod 770; assign Amit to the Delhi directory and John to the UK directory.

Apply setgid on the Delhi and UK directories so new files inherit the directory group, and use the sticky bit to ensure only the file creators can delete their files.

Set up a cron job to write the RHCSA practice message to /var/log/messages at 1 p.m. on weekdays by editing crontab, verifying with crontab -l, and appending.

Reach the last lecture of this module, reflect on what you learned, and post questions in the forum or ping the instructor. Wish yourself success in your exam and career.