[Bigdata-developers] Blazegraph Docker problem: "ERROR: Could not contact server"

[Mikel E. A. <mik...@gm...>]

Hi;

I'm preparing a Docker image that includes Blazegraph, but Blazegraph is
not working. It must be a problem with the Docker setting but perhaps
someone can give a pointer. (I have also submitted the question to stack
overflow [1])

The Dockerfile [2] isimply copies a working installation of blazegraph and
executes the nano sparql server:

COPY blazegraph /LinkedDataServer/blazegraph
CMD java -server -jar blazegraph/bigdata-bundled.jar

When I run the container (also including pubby and refine):

docker run -d -p 9999:9999 -p 3333:3333 -p 8080:8080
mikeleganaaranguren/linked-data-server:0.0.1

It runs fine, i.e. I can access Blazegraph at http://127.0.0.1:9999.
However, when I try to do a query or update data I get "ERROR: Could not
contact server". Also, I can't access the server programmatically
(Connection reset by peer):

wget
http://127.0.0.1:9999/bigdata/sparql?query=select%20*%20where%20{%20?s%20?p%20?o%20}%20limit%201

However when I enter the image and run blazegraph manually I can do the
wget above, both to localhost and the "internal" IP of the image. Obviously
there is something wrong with the Docker setting, but any clues will be
wellcome. Also, is there any blazegraph log I can access when runing
blazegraph like this?

Thanks


[1]
http://stackoverflow.com/questions/33368741/docker-container-with-blazegraph-triple-store-not-working-possibly-due-to-networ
[2]

FROM ubuntu:14.04
MAINTAINER Mikel Egaña Aranguren <my.email@x.com>

RUN apt-get update && apt-get install -y openjdk-7-jre wget curl

RUN mkdir /LinkedDataServer

COPY google-refine-2.5 /LinkedDataServer/google-refine-2.5
COPY blazegraph /LinkedDataServer/blazegraph
COPY jetty /LinkedDataServer/jetty

EXPOSE 9999
EXPOSE 3333
EXPOSE 8080

WORKDIR /LinkedDataServer
CMD java -server -jar blazegraph/bigdata-bundled.jar
CMD google-refine-2.5/refine -i 0.0.0.0

WORKDIR /LinkedDataServer/jetty
CMD java -jar start.jar jetty.port=8080


-- 
Mikel Egaña Aranguren, Ph.D.

http://mikeleganaaranguren.com