Meidokon Wiki
  • Comments
  • Immutable Page
  • Menu
    • Navigation
    • RecentChanges
    • FindPage
    • Local Site Map
    • Help
    • HelpContents
    • HelpOnMoinWikiSyntax
    • Display
    • Attachments
    • Info
    • Raw Text
    • Print View
    • Edit
    • Load
    • Save
  • Login

Useful(?) links

  • furinkan's stuff

  • Postfix snippets


  • SystemInfo

  • This sidebar

Navigation

  • FrontPage
  • RecentChanges
  • FindPage
  • HelpContents

Upload page content

You can upload content for the page named below. If you change the page name, you can also upload content for another page. If the page name is empty, we derive the page name from the file name.

File to load page content from
Page name
Comment

Revision 1 as of 2022-07-31 06:46:29
MeidokonWiki:
  • furinkan
  • Mneme
  • NebulaGraph

Contents

  1. Start the database
  2. Connect to the console
  3. Make some structure

Nebula seems like a decent fit, but getting started with it is a bit tricky, and there's a lot of outdated docs floating around.

While it has a proper large-scale architecture, I want to just use it on my workstation for now, so I'll use the docker-compose method.

Start the database

I don't think this has persistence, so expect to redo all your work if you the workstation is shutdown. I don't know for sure, because I've never used docker-compose before.

These docs are old but they work fine to get it up and running: https://docs.nebula-graph.io/2.0/2.quick-start/2.deploy-nebula-graph-with-docker-compose/

  • Note that the default port has changed from 3699, and it's now 9669
  • If you need to do some debugging with docker: https://medium.com/nebula-graph/debug-the-nebula-graph-processes-inside-the-docker-container-3e28dc5fafe8

Connect to the console

docker run --rm -it --network nebula-docker-compose_nebula-net --entrypoint=/bin/sh vesoft/nebula-console:v2-nightly

/ # nebula-console -addr graphd -port 9669 -u root -p nebula

This is like a mysql/psql shell now. :QUIT to exit.

Make some structure

I'm using this series of videos: https://www.youtube.com/watch?v=qF4ZhDEN30k&list=PL4ArMmsAnb84uB2d9L46eXpIi7Epz2cfp&index=3

The syntax has changed a little since then though, here's the reference: https://docs.nebula-graph.io/3.2.0/3.ngql-guide/9.space-statements/1.create-space/

(root@nebula) [(none)]> CREATE SPACE mneme (vid_type = int64);
Execution succeeded (time spent 1229/1435 us)

(root@nebula) [(none)]> use mneme;

(root@nebula) [mneme]> CREATE TAG person (displayname string NOT NULL, dob_year INT, dob_month INT, dob_day INT) comment = 'A single identifiable person, who may have multiple handles/names';
Execution succeeded (time spent 1278/1580 us)

(root@nebula) [mneme]> CREATE TAG photoshoot(shoot_date DATE);

(root@nebula) [mneme]> CREATE EDGE did_shoot(role STRING);
  • MoinMoin Powered
  • Python Powered
  • GPL licensed
  • Valid HTML 4.01
MoinMoin Release 1.9.11 [Revision release], Copyright by Juergen Hermann et al.