Challenges

Real production decisions. Defend your call against a senior engineer, then get scored against an answer key. How it works

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4 of 53 challenges

Linux

4

LockedDeploy Fails with Permission Denied. chmod 777 Everything?A deploy fails with permission errors and a teammate wants to chmod -R 777 the app directory so it never happens again. Defend fixing the actual ownership mismatch instead.beginner8 minbeginner8 min
LockedDisk Is at 100% and the App Is Down. rm -rf?A server is out of disk and the app is down. A teammate wants to rm -rf the logs to free space fast. Defend what you actually do first.beginner8 minbeginner8 min
LockedThe Fix Is One Line in /etc. Just SSH In and Edit It?Prod is degraded by one wrong sysctl value in /etc on an Ansible-managed fleet. A teammate wants to hand-edit each box now and codify it later. Defend the call.intermediate11 minintermediate11 min
LockedThe Box Keeps OOM-Killing. Just Add a Huge Swapfile?A latency-sensitive service keeps getting OOM-killed and a teammate wants to add 16GB of swap and crank swappiness. Defend what you actually do instead.advanced13 minadvanced13 min