LNX-201 Intermediate ⏱ 8 weeks

Linux System Administration

Administer production Linux servers. RHCSA-aligned: systemd, networking, storage, security and troubleshooting on RHEL-family and Debian-family systems.

Prerequisites: LNX-101 Linux Fundamentals

Syllabus

Module 1 — Boot & services

  • Boot process and GRUB
  • systemd units, targets and journald
  • Scheduling with cron and timers

Module 2 — Networking

  • IP configuration and NetworkManager
  • DNS, DHCP client setup
  • SSH server hardening
  • troubleshooting with ss, ip, ping

Module 3 — Storage

  • Partitions and filesystems
  • LVM: PV, VG, LV
  • Mounting, fstab, swap
  • NFS and autofs

Module 4 — Security

  • firewalld and iptables basics
  • SELinux modes and contexts
  • User password policies
  • Auditing logs

Module 5 — Operations

  • Log management with rsyslog
  • Backups with tar and rsync
  • Performance basics: top, vmstat, iostat