Skip to content

Latest commit

 

History

History
133 lines (82 loc) · 2.93 KB

connecting.md

File metadata and controls

133 lines (82 loc) · 2.93 KB
Raw

class: in-person

Connecting to our lab environment

.exercise[

  • Log into the first VM (node1) with your SSH client
  • Check that you can SSH (without password) to node2: 
    ssh node2
  • Type exit or ^D to come back to node1

]

If anything goes wrong — ask for help!

Doing or re-doing the workshop on your own?

  • Use something like Play-With-Docker or Play-With-Kubernetes

    Zero setup effort; but environment are short-lived and might have limited resources

  • Create your own cluster (local or cloud VMs)

    Small setup effort; small cost; flexible environments

  • Create a bunch of clusters for you and your friends (instructions)

    Bigger setup effort; ideal for group training

class: self-paced

Get your own Docker nodes

  • If you already have some Docker nodes: great!

  • If not: let's get some thanks to Play-With-Docker

.exercise[

]

You will need a Docker ID to use Play-With-Docker.

(Creating a Docker ID is free.)

We will (mostly) interact with node1 only

These remarks apply only when using multiple nodes, of course.

  • Unless instructed, all commands must be run from the first VM, node1

  • We will only check out/copy the code on node1

  • During normal operations, we do not need access to the other nodes

  • If we had to troubleshoot issues, we would use a combination of:

    • SSH (to access system logs, daemon status...)

    • Docker API (to check running containers and container engine status)

Terminals

Once in a while, the instructions will say:
"Open a new terminal."

There are multiple ways to do this:

  • create a new window or tab on your machine, and SSH into the VM;

  • use screen or tmux on the VM and open a new window from there.

You are welcome to use the method that you feel the most comfortable with.

Tmux cheatsheet

Tmux is a terminal multiplexer like screen.

You don't have to use it or even know about it to follow along.
But some of us like to use it to switch between terminals.
It has been preinstalled on your workshop nodes.

  • Ctrl-b c → creates a new window
  • Ctrl-b n → go to next window
  • Ctrl-b p → go to previous window
  • Ctrl-b " → split window top/bottom
  • Ctrl-b % → split window left/right
  • Ctrl-b Alt-1 → rearrange windows in columns
  • Ctrl-b Alt-2 → rearrange windows in rows
  • Ctrl-b arrows → navigate to other windows
  • Ctrl-b d → detach session
  • tmux attach → reattach to session