BlazeGraph

Install BlazeGraph into a second instance of Tomcat7

# wget http://it.apache.contactlab.it/tomcat/tomcat-7/v7.0.75/bin/apache-tomcat-7.0.75.tar.gz
# tar xf apache-tomcat-7.0.75.tar.gz
# mv apache-tomcat-7.0.75 /usr/share/tomcat-blzg

# useradd -m -d /var/bigdata -s /bin/false blazegraph
# nano -w /var/bigdata/.bash_profile

export BLZG_CONF=/etc/bigdata
export CATALINA_HOME=/usr/share/tomcat-blzg
export CATALINA_PID="/usr/share/tomcat-blzg/catalina.pid"
export JAVA_HOME=/usr/lib/jvm/java-8-oracle/jre
export BLZG_USER=blazegraph
export PATH=/usr/lib/jvm/java-8-oracle/jre/bin:/usr/share/tomcat-blzg/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
export JAVA_OPTS="-server -Djava.awt.headless=true -Xmx8g -Xms8g -Dcom.bigdata.rdf.sail.webapp.ConfigParams.propertyFile=/etc/bigdata/RWStore.properties -Dlog4j.configuration=/etc/bigdata/log4j.properties -Dfile.encoding=UTF-8 -Dsun.jnu.encoding=UTF-8 -XX:+UseG1GC -XX:+DisableExplicitGC"

NOTE: instead of “-XX:+UseParallelOldGC” may be better “-XX:+UseG1GC -XX:+DisableExplicitGC” [thanks Diego!] NOTE: add initial mem size to min and max, so “-Xmx8g” change into “-Xms8g -Xmx8g” [thanks Diego!]

# nano -w /usr/share/tomcat-blzg/conf/server.xml

-    <Server port="8005" shutdown="SHUTDOWN">
+    <Server port="8006" shutdown="SHUTDOWN">

-    <Connector port="8080" protocol="HTTP/1.1"
+    <Connector port="8081" protocol="HTTP/1.1"
               connectionTimeout="20000"
-               redirectPort="8443" />
+               redirectPort="8444" />

-    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
+    <Connector port="8010" protocol="AJP/1.3" redirectPort="8444" />

# mkdir -p /var/bigdata/logs
# mkdir -p /etc/bigdata/

# git clone https://github.com/discoverygarden/blazegraph_conf
# cp blazegraph_conf/RWStore.properties /etc/bigdata
# cp blazegraph_conf/log4j.properties /etc/bigdata
# cp blazegraph_conf/blazegraph_init /etc/init.d/blazegraph


# cd /usr/share/tomcat-blzg/webapps
# wget https://sourceforge.net/projects/bigdata/files/bigdata/2.1.4/blazegraph.war/download -O blazegraph.war


# chowner -R blazegraph:blazegraph /usr/share/tomcat-blzg
# chowner -R blazegraph:blazegraph /var/bigdata
# chowner -R blazegraph:blazegraph /etc/bigdata
# chmoder +x /etc/init.d/blazegraph

# update-rc.d blazegraph start 64 2 3 4 5 . stop 36 0 1 6 .
# service blazegraph start

Check BlazeGraph at port 8081.

# service blazegraph stop