The Linux Administrator's Handbook

Practical guides for modern Linux infrastructure. From virtualization to GPU clusters — everything you need, nothing you don't.

18 Topics
RHEL 10 Ready
2026 Updated

Topics

Click a card to dive in. Each guide covers prerequisites, installation, configuration, and verification.

🖥
Virtualization

KVM on RHEL 10

Set up KVM virtualization on RHEL 10, including the new socket-activated libvirt services that replaced the old libvirtd daemon.

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📦
Containers

Podman & Containers

Dockerless container management with Podman. Rootless containers, pod networking, system containers, and container-compose.

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🟢
GPU

NVIDIA Drivers

Install proprietary NVIDIA drivers on RHEL/Fedora. CUDA toolkit, GPU passthrough to VMs, and container GPU access with NVIDIA Container Toolkit.

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🌐
Networking

Network Configuration

NetworkManager, nmcli, bridge interfaces, firewall configuration with firewalld, and bonding/teaming setups.

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💾
Storage

LVM & Storage

Logical Volume Management, LUKS encryption, RAID configuration, NFS mounts, and Btrfs snapshots.

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🔒
Security

Hardening & SELinux

SELinux policies, SSH hardening, firewall rules, auditd, and CIS benchmark checklist for RHEL systems.

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Services

Systemd & Services

Unit management, custom services, socket activation, quadlet files, timers, and journal logging.

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🖥
Management

Cockpit Web Console

Remote server management, packageless sessions, HA cluster management, and VM administration.

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🐋
Immutable

Bootc & Image Mode

OS-as-container deployment model with atomic upgrades, rollback, and immutable infrastructure.

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🛡
SELinux

SELinux Deep Dive

Custom policy creation, boolean management, file context transitions, and troubleshooting denials.

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Time

NTP / Chrony

Time synchronization with chronyd, hardware clock management, and NTP security.

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📋
Logging

Log Management

systemd-journald, persistent logging, log rotation, rsyslog, and log analysis.

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👤
Identity

User & Group Management

Local users, LDAP/SSSD integration, sudo configuration, PAM modules, and resource limits.

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Kernel

Kernel Tuning

sysctl parameters, EEVDF scheduler, systemd-udev rules, kernel modules, and performance tuning.

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🔑
Crypto

Cryptography & TLS

Crypto policies, FIPS mode, certificate management, TLS configuration, and GPG keys.

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📦
Packages

Package Management

DNF package management, version locking, local repositories, module streams, and rollback.

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🔗
HA

High Availability

Pacemaker, Corosync, PCS cluster management, resource agents, and STONITH fencing.

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📊
Monitoring

Monitoring & Observability

sar, atop, bcc-tools, eBPF profiling, and Prometheus exporters for system performance.

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