VirtuosoDocker How to Deploy Virtuoso in a Docker Container How to Deploy Virtuoso in a Docker Container To simplify deployment, Virtuoso Open Source Edition can be run in a Docker container. Building a VOS Base Image The Dockerfiles below provide two VOS images: A base image which provides a compiled, installed VOS binary. A deployment image, built from the base image, which starts a VOS instance on the specified ports using the given VOS virtuoso.ini configuration file and, optionally, an existing Virtuoso database. To build the base image: docker build -f Dockerfile.vos_base -t openlink/vos_base:v0 . Dockerfile.vos_base builds VOS from the VOS GitHub sources, as described in the VOS Wiki, and installs VOS in /opt/virtuoso-opensource. Dockerfile.vos_base FROM ubuntu:trusty ENV VIRT_HOME /opt/virtuoso-opensource ENV VIRT_BUILD_OPTS --with-readline ENV VIRT_DB /var/lib/virtuoso/db RUN apt-get -y update && \ apt-get -y clean && \ apt-get -y install dpkg-dev build-essential && \ apt-get -y install autoconf automake libtool flex bison git gperf gawk m4 make libxml2-dev libssl-dev libreadline-dev wget && \ rm -rf /var/lib/apt/lists/* && \ rm -rf /tmp/* WORKDIR /opt RUN git clone git://github.com/openlink/virtuoso-opensource.git virtuoso-opensource.src WORKDIR /opt/virtuoso-opensource.src RUN git checkout develop/7 RUN ./autogen.sh && ./configure --prefix=$VIRT_HOME $VIRT_BUILD_OPTS && make && make install WORKDIR /opt/virtuoso-opensource/share/virtuoso/vad RUN wget http://download3.openlinksw.com/uda/vad-packages/7.2/cartridges_dav.vad Building a VOS Deployment Image To build the deployment image: docker build -f Dockerfile.vos -t openlink/vos:v0 . The image created by Dockerfile.vos runs Virtuoso in the foreground and assumes Virtuoso listens for HTTP connections on port 8890 and SQL connections on port 1111. Dockerfile.vos FROM openlink/vos_base:v0 ENV VIRT_HOME /opt/virtuoso-opensource ENV VIRT_DB /opt/virtuoso-opensource/var/lib/virtuoso/db RUN export PATH=$PATH:/opt/virtuoso-opensource/bin EXPOSE 1111 EXPOSE 8890 WORKDIR $VIRT_DB CMD /opt/virtuoso-opensource/bin/virtuoso-t -f Running VOS within Docker Initializing a new database In order to retain changes to the Virtuoso database, the database should be held in the host file system. The database location on the host should reflect the installation directory used by the base image. Create directory /opt/virtuoso-opensource/var/lib/virtuoso/db in the host file system and provide a virtuoso.ini configuration file. sudo mkdir -p /opt/virtuoso-opensource/var/lib/virtuoso/db sudo cp ./virtuoso.ini.template /opt/virtuoso-opensource/var/lib/virtuoso/db/virtuoso.ini The virtuoso.ini.template assumes the installation directory is /opt/virtuoso-opensource, with the Virtuoso HTTP server listening on port 8890 and SQL client connections made through port 1111. Starting the VOS Container Start a VOS container by running: sudo docker run -v /opt/virtuoso-opensource/var/lib/virtuoso/db:/opt/virtuoso-opensource/var/lib/virtuoso/db -t -p 1111:1111 -p 8890:8890 -i openlink/vos:v0 If the db directory contains only a virtuoso.ini file, a new database will be created when the container is started for the first time. All subsequent changes to the database will be persisted to the host file system. Using an existing database If the db directory in the host file system contains an existing Virtuoso database, that database will be used by the container. Again, all subsequent changes to the database will be persisted to the host file system. Installing the Cartridges VAD The Virtuoso Sponger and its associated transformers are distributed as a VAD (Virtuoso Application Distribution). When a new database instance is created, VOS will automatically install the Virtuoso Conductor UI. However it will not automatically install the Cartridges nor any other VAD. The latest Cartridges VAD is available for download from the Virtuoso download page, via the "Linked Open Data Transformation Middleware ("Sponger") link. This VAD is automatically downloaded as part of the VOS base image build and included in the image at /opt/virtuoso-opensource/share/virtuoso/vad. Once a VOS instance has been initialized and the Cartridges or other VAD downloaded, the desired VAD can be installed by logging into the Virtuoso Conductor (http://{container_host}:8890/conductor), navigating to the System Admin --> Packages tab, and clicking on the Install link. Alternatively, iSQL may be used, with a command of this form: DB.DBA.VAD_INSTALL('{vad-name}.vad',0); Once installed, enable the desired cartridges through the Linked Data --> Sponger panel.