g0t4 / docker-swarm-mode-getting-started

Repository for my Pluralsight course Getting Started with Docker Swarm Mode

Errata for the course:

20.10

Swarm Jobs!

• As of Docker version 20.10 support for jobs has been added!
• read the jobs docs here.
• mode option has two new values:
  • replicated-job
  • global-job
• jobs are run to completion
  • completion = return code 0
• IMO comingling service and job concepts is somewhat confusing albeit they have many options in common.. but a service is an abstraction of a daemon or long-running process whereas a job is run once
  • A docker jobs or similar might be nice
    • But, mode works and avoids a slew of new docker commands and subcommands
  • Many service options aren't applicable, like restart-condition, update and rollback options
• replicated-jobs use the replicas setting to specify how many
• global-jobs run one per node (matching any placement constraints)
  • as nodes are added, each will have a task for each global-job

17.10

• docker service commands no longer run detached by default as of 17.10
  • This is nice because you get a progress indicator in the new interactive mode
  • If you want to run detached simply pass --detach
  • Applies to service create, service update, service rollback, and service scale
  • For command examples before and after this change and a history of the change, check out this PR, it's great: docker/cli#525

Updated as of 17.10

Keep an eye out for future changes, this is the easiest spot for me to update.

Refresh coming soon! (2nd edition)

I'm working on a refresh to this course to update it for changes since the 1st edition was published!

• It will be condensed, so some content won't make the cut.
  • Fortunately, the vast majority of the current course is still applicable and thus you can always watch the expanded 1st edition (current course) after the refresh (2nd edition) comes out!
  • Both are linked
    • on my author page.
    • and under Links Below

Links

• Getting Stated with Docker Swarm (2nd edition):
  • Status: WIP, eta May 2021
  • Course: (Link Pending)
  • Repo: g0t4/course2-swarm-gs
• Getting Stated with Docker Swarm Mode (1st edition)
  • Status: current course
  • Course: 1st edition Getting Started with Docker Swarm Mode
  • Repo: g0t4/docker-swarm-mode-getting-started