Operate and restore a Docker Compose stack: logs, saturation, backup, update and rollback

Operate a running Docker Compose stack: read and order its logs, follow a request across services through a shared identifier, attribute a saturation to a service with the cgroup counters rather than a snapshot, spot a secret copied into a log and an unbounded json-file log; back up its PostgreSQL database with pg_dump from the host, check the archive, back up a volume's files and the project configuration, then restore everything on a blank machine and check the result with a checksum; update an image pinned by its digest, prove which version is running, stop on a failure with up --wait, roll back without losing data and move the database to a new major version through backup and restore.

Start lesson 1 The Containers domain

3 lessons
~4 h 40 of reading
3 quizzes
0 proof lab

Lessons

How to learn it

3 lessons, about ~4 h 40, in program order. Each lesson ends with its quiz.

The program

3 lessons · ~4 h 40

1Read logs and attribute saturation· 85 min
2Back up and restore an application· 90 min
3Update, and roll back without losing data· 105 min

Beyond the lessons

Assess, practise, pass the proof

Reading a lesson confirms nothing. A skill is confirmed by a passed quiz, practised in a guided lab, and put to the test by a challenge or a mission; an imported lab result is not verified by the site.

Assess yourself

3 quizzes

At the end of the lessons: passed at 70%, they confirm the skill.

Practice

3 guided labs

Proof

No proof

Neither a challenge nor a mission with a proof yet.

Around it

Who requires it, who teaches it

Required by

Linux Administrator

Taught by

Containers and Docker

Same block · Build and run containers