E1. MeshxNode and MeshxConsul introduction.

by andrzej-mag 3 years ago

GNU/Linux ◆ foot ◆ fish 195 views

First we start iex with epmd disabled and using MeshxNode protocol distribution (see top left corner terminal for iex command). MeshxConsul is configured as service mesh adapter for MeshxNode and will start “node service” in background. We turn nodes into distributed running Node.start/1 and Node.set_cookie/2. By default, MeshxConsul will use Consul Connect built-in proxy as a sidecar proxy; you can see proxy stdout in terminals. We test node connectivity with Node.connect/1 and Node.list/0. Next we execute few functions exported by MeshxConsul:

list/0 - list services started on the node,
list_upstream/1 - list (node) service upstreams,
info/1 - service config as registered with Consul,
MeshxConsul.Proxy.info/1 - (node) service sidecar proxy info.

Finally we run spawn() and :erpc.call() to confirm erlang distribution compatibility with Meshx.

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You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 410449.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/410449.cast',
      document.getElementById('player'),
      { cols: 166, rows: 47 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't offer GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed run the following command to create GIF file:

agg https://asciinema.org/a/410449 410449.gif

Or, if you already downloaded the recording file:

agg 410449.cast 410449.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.