STEM · Full roadmap · ~115 min read · 33 steps

🛠️System Administrator

Own and run real infrastructure: servers, identity, virtualization, automation, and recovery

Activities in this path

Try thisQuick checkThink it throughFill the blankPut in orderTap to revealYour turn

Learning path

0 / 33 steps

Start here

What a system administrator actually owns

The Linux filesystem hierarchy

Users, groups, and ownership

Permissions: chmod and chown

Package managers: apt and yum

systemd and managing services

Processes and resource use

Cron and scheduled jobs

SSH and key authentication

Reading logs under /var/log

Shell scripting for real tasks

Windows Server roles and features

Active Directory: forest, domain, and OU design

Group Policy and GPO design

DNS and DHCP server administration

FSMO roles, replication, sites and services

Virtualization and hypervisors

VM lifecycle, snapshots, and resource allocation

Storage: RAID, SAN, NAS, iSCSI, and LVM

Identity, access, and least privilege

Containers and the cloud, briefly

Infrastructure as code and configuration management

PowerShell and Bash automation in practice

Patch and update management at scale

Monitoring and observability

Backup and disaster recovery

Security hardening

Documentation, runbooks, and incident response

Capacity planning

Common mistakes that bite sysadmins

The culture and career side: on-call, postmortems, and what comes next

Where to go next

Your current step uses a Rive animation; completed steps show a check.