docker-minecraft-server/titan-gremlin/README.md
Geoff Bourne 0ea4ea7d0c [cass] Make sure to enable start_rpc
* also note in titan-gremlin that 1.x of ES is needed
* provide docker compose snippet
Part of #68
2016-04-17 12:21:53 -05:00

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Runs the Gremlin console from the Titan Graph Database's "all" distribution.
# Basic Usage
To start the Gremlin console with the default configuration files available:
docker run -it itzg/titan-gremlin
In order to adjust or further define property files to use within Gremlin,
attach a host directory to the container's `/conf` such as
docker run -it -v $(pwd)/conf:/conf itzg/titan-gremlin
After running once your host directory will be populated with the distribution-default
configuration files. Modify those or add to them and they will be available during
the next time you (re)start your container.
# Connecting to Cassandra and Elasticsearch Containers
First start containers for Cassandra and Elasticsearch (pre-2.x),
where the `--name` you choose can be arbitrary or left off to use a generated name.
docker run -d --name gremlin-cass itzg/cassandra
docker run -d --name gremlin-es itzg/elasticsearch:1.x
Now start Gremlin with networking links to those containers with the aliases
* `--link <container>:cass`
* `--link <container>:es`
such as
docker run -it --rm --link gremlin-cass:cass --link gremlin-es:es itzg/titan-gremlin
and with that you can follow the
[Graph of the Gods example](http://s3.thinkaurelius.com/docs/titan/current/getting-started.html), such as
gremlin> GraphOfTheGodsFactory.load(g)
gremlin> saturn = g.V.has('name','saturn').next()
==>v[256]
gremlin> saturn.map()
==>name=saturn
==>age=10000
gremlin> saturn.in('father').in('father').name
==>hercules
# Running and Connecting with Docker Compose
Create the following Compose content as the file `docker-compose.yml` and in
that directory invoke `docker-compose run titan` to run the Gremlin shell
with the supporting Elasticsearch and Cassandra containers.
```
titan:
image: itzg/titan-gremlin
links:
- cass
- es
cass:
image: itzg/cassandra
es:
image: itzg/elasticsearch:1.x
```