Linux Foundation Certified System Administrator (LFCS)

Unlock great career opportunities by proving your Linux expertise — the OS powering 90% of the public cloud. Become the go-to professional every employer wants on their team!

The LFCS certification delivers career advancement, industry-wide credential recognition, proof of your high-demand cloud skills, and networking opportunities.

Can you provide more details about the LFCS certification?

How can I obtain the LFCS certification?

Are there any prerequisites for taking the LFCS exam?

Operations Deployment - 25%

• Configure kernel parameters, persistent and non-persistent
• Diagnose, identify, manage, and troubleshoot processes and services
• Manage or schedule jobs for executing commands
• Search for, install, validate, and maintain software packages or repositories
• Recover from hardware, operating system, or filesystem failures
• Manage Virtual Machines (libvirt)
• Configure container engines, create and manage containers
• Create and enforce MAC using SELinux

Networking - 25%

• Configure IPv4 and IPv6 networking and hostname resolution
• Set and synchronize system time using time servers
• Monitor and troubleshoot networking
• Configure the OpenSSH server and client
• Configure packet filtering, port redirection, and NAT
• Configure static routing
• Configure bridge and bonding devices
• Implement reverse proxies and load balancers

Storage - 20%

• Configure and manage LVM storage
• Manage and configure the virtual file system
• Create, manage, and troubleshoot filesystems
• Use remote filesystems and network block devices
• Configure and manage swap space
• Configure filesystem automounters
• Monitor storage performance

Essential Commands - 20%

• Basic Git Operations
• Create, configure, and troubleshoot services
• Monitor and troubleshoot system performance and services
• Determine application and service specific constraints
• Troubleshoot diskspace issues
• Work with SSL certificates

Users and Groups - 10%

• Create and manage local user and group accounts
• Manage personal and system-wide environment profiles
• Configure user resource limits
• Configure and manage ACLs
• Configure the system to use LDAP user and group accounts

1. After purchase the exam voucher, please log into your portal LFOSSA website, your exam voucher will be available under "Exam & Learning Voucher" (password-protected).

2. You need an LFID to register for and take Linux Foundation (LF) certification exams. If you already have a Linux Foundation ID (LFID), you can redeem your exam voucher at https://trainingportal.linuxfoundation.org/redeem . If you do not have a LFID, click here (https://trainingportal.linuxfoundation.org/access/saml/login) to create one.

3. Log in to your LF Education portal,  enter your exam voucher code in the Enter Registration Code field and click Validate, then check the box: " I agree to The Linux Foundation Training Terms, Conditions & Policies and the Thought Industries Terms & Conditions." 

4. A confirmation message “Congrats, your code has been validated” will appear upon successful validation, confirming your voucher is valid. Click Register to complete the exam voucher registration.

5. Log in to LF Education global website with your LFID.   After the registration process, the certification exam will be available in the learner's portal within 24 hours, then the candidate will be available to take and schedule exam. 

This exam is an online, proctored, performance-based test that requires solving multiple issues from a command line running Linux. Candidates have 2 hours to complete the tasks. Please review The Linux Foundation certification Policies and FAQ below.

Frequently Asked Questions

Linux Foundation Certification Exams

LFCS Important Instructions

Linux Foundation Certification Policies

The Exam Voucher is non-refundable upon purchase.

Exam Voucher is redeemable within 90 days post-purchase; Exam eligibility will be valid for 1 year from your registration date. You now have 90 days + 365 days for exam preparation!