Raid, LVM, ZFS, iSCSI protocol & Fog PXE on CentOS Linux 8

Install CentOS 8 on a RAID 1 array across two disks, configure custom partitions including boot and root, and complete the installation within a virtual machine.

Add storage disks to a CentOS 8 virtual machine and learn how to attach and configure them as additional disks.

Linear mode merges two disks into one physical device with no redundancy, causing bottlenecks under multi-user writes while single reads remain unchanged.

Explore raid 0 configuration on CentOS Linux 8, using multiple drives to maximize read and write performance while offering no parity and no data recovery.

Explore raid 1 and raid 4 configurations, highlighting mirroring, redundancy, and parity; understand capacity halving, hot spare use, and zero-downtime recovery through disk reconstruction.

Explore raid 6 configuration and its parity design, showing how it tolerates two disk failures and the impact of parity on write performance and data availability.

Explore raid 5 and raid 10 configurations, using distributed parity and striping to balance performance and redundancy, with minimum three drives and parity-based rebuild processes.

Replace a failed mirror disk in a software raid on CentOS 8 by removing the failed disk, inserting a new one, copying the partition table, and rebuilding the array.

Learn how to configure LVM on a raid drive by creating logical volumes, checking status, and mounting the results, then add a permanent entry for mounting.

learn how to use vgextend to extend storage on CentOS Linux 8, following the extension steps and verifying the extended setup in a live environment.

Execute lvextend to grow a logical volume, then verify the volume status and display updates. Extend incrementally and confirm filesystem growth to ensure successful expansion.

Master the lvreduce command on CentOS 8 to safely shrink an active logical volume, with emphasis on backups and cautions about potential data loss.

learn how to remove lv and vg in lvm on centos linux 8, ensuring safe handling of logical volumes and volume groups.

Explore ZFS overview, including snapshot capability, data integrity with automatic repair, and the pool and volume manager that support the file system.

Install zfs packages by enabling the epel repository and using dnf to install required packages, then reboot and verify the installation on CentOS 8.

Explore configuring raid0, raid1, and raid5 using zpool in zfs on CentOS Linux 8, including pool creation and disk layout considerations.

Configure a raid10 array from zpool on CentOS Linux 8, verify pool status, and ensure proper disk health and performance.

Learn how to destroy a zpool in a CentOS 8 environment within the context of raid, lvm, zfs, and iscsi configurations.

Create a zfs filesystem and pool on a pilot system, set up partitions and volumes, and practice mounting and data management to establish a functional storage environment.

Discover how to destroy a filesystem in a CentOS 8 environment, with focus on state policy, system references, and terminology to help readers grasp the concepts.

Learn thin provisioning within storage virtualization, enabling apps to use more capacity than physically available by efficient allocation and management on CentOS Linux 8.

Learn to configure a storage area network using iSCSI on zfs, setting up target and initiator, ACLs, portal groups, and LUNs for block storage.

Configure an nfs server on CentOS 8 by installing utilities, enabling services, creating and exporting shared folders, and applying acl and rw permissions for the 192.168.0.0/24 subnet.

Configure the nfs client on centos linux 8, mount nfs shares, install required utilities, specify the server ip, and create local mount points for backups organized by department folders.

Learn to permanently mount an NFS shared folder on a client by adding an /etc/fstab entry, rebooting to verify the mount persists across reboots.

Explore how a fog server manages imaging and deployment, including installing ubuntu server, configuring park server, and capturing and deploying OS images over the network.

Install Ubuntu Server 16.04 on VirtualBox by creating a Debian-based VM, loading the Ubuntu Server ISO, configuring memory and partitions, and logging in via the command line.

Set a static IP on an Ubuntu 16.04 server by editing the network interface file, assigning a chosen IP, subnet 255.255.255.0, and gateway, then reboot the vm to apply.

This practical session demonstrates step-by-step configuration of a Fog PXE boot server on CentOS Linux 8, including repository setup, running the installation script, and configuring network and DHCP settings.

Learn how to capture an image from an existing VM, create and manage images, transfer them to the target server, and prepare for deployment.

Deploy a captured image to a virtual machine using VirtualBox, register the host, select the image, and monitor deployment across the target machine.