FixOps: Learn DevOps & Cloud

LKC Labs

In-app purchases

About this app

Learn DevOps by fixing realistic failures instead of memorizing theory.

FixOps is a hands-on app for learning DevOps, Linux and cloud operations. You get paged for a simulated production incident, investigate it in an interactive terminal, apply a fix and prove the service recovered. Short lessons, a Linux command sandbox, cheat sheets and certification practice exams are in the same app, and most of it is free.

HANDS-ON DEVOPS LABS

• 61 incident labs across Linux, networking, Docker, Kubernetes, Git, CI/CD, security and observability
• A simulated terminal that answers like a real shell: systemctl, journalctl, ss, curl, docker, kubectl and more
• Alerts, dashboards and teammates that react to what you do
• Automated checks that verify the recovery, then a debrief and a short postmortem
• A Daily Outage: the same incident for everyone, every day

LEARN LINUX, DOCKER, KUBERNETES AND CI/CD

• 479 short lessons in 6 learning tracks: Linux and cloud computing basics, CI/CD with GitHub Actions, GitLab CI and Jenkins, Docker, Kubernetes, Terraform and Ansible, monitoring with Prometheus and Grafana, DevSecOps, and Git
• Quick quizzes with explanations, and terminal practice after each topic
• Career paths for DevOps engineer, site reliability engineer (SRE), platform engineer, Kubernetes specialist and DevSecOps engineer
• Notes, bookmarks, XP, streaks and badges to keep you coming back

CLOUD AND DEVOPS CERTIFICATION EXAM PREP

• Practice for 22 exams: AWS Cloud Practitioner, Solutions Architect Associate, Developer Associate, CloudOps Engineer and DevOps Engineer Professional; Azure AZ-900, AZ-104 and AZ-400; Google Cloud Associate Cloud Engineer; CKA, CKAD, CKS, KCNA and KCSA; Terraform Associate; GitHub Actions and GitHub Foundations; Prometheus, GitOps and Argo associate exams; LFCS and Linux Essentials
• Read why each option is right or wrong after every question
• Take timed mock exams weighted like the official blueprint
• Work hands-on Kubernetes and Linux tasks for CKA, CKAD, CKS and LFCS in a simulator that grades the result
• Start every exam with a free diagnostic or sample lab. FixOps Pro, a subscription, unlocks the full question banks; lessons, incidents, the terminal and the manual stay free

COMMAND CHEAT SHEETS

A field manual of more than 500 commands, checklists and templates for Linux, Bash, SSH, Git, Docker, Docker Compose, kubectl, Helm, Terraform and PromQL. Each has an example, the flags worth knowing and the mistake to avoid, and most open in the sandbox so you can run them.

DESIGNED FOR LEARNING SAFELY

The FixOps terminal is a simulation built for practice. It does not connect to a live server or execute commands on your device. You can experiment, reset a session, review command history and learn from mistakes without risking production infrastructure.

WHO IT IS FOR

Aspiring DevOps engineers, Linux and cloud learners, people preparing for DevOps or SRE interviews, and working engineers who want repeatable incident-response practice before their next on-call shift.

Start as a guest in one tap, or sign in with Google or email to keep your progress. Install FixOps and begin with a guided Linux lesson, an incident lab or a free exam diagnostic.

Practice questions and labs are written by FixOps. FixOps is not affiliated with, endorsed by, or sponsored by Amazon Web Services, Microsoft, Google, GitHub, HashiCorp, the Linux Foundation, the Cloud Native Computing Foundation or the Linux Professional Institute. Certification and product names are trademarks of their owners.

What’s new

Fixes a bug that could reset your progress when the app opened straight on an incident, for example from a link or after Android restored the app. Also: incident mode names, exam notes and the Sandbox header are no longer cut off on small phones, Sandbox commands answer faster on slower phones, the side menu shows the open tab when the phone is on its side, quizzes leave room for the question in landscape, and buttons use the same capitalisation everywhere.