[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

cassandra/Dockerfile

@@ -1,11 +1,11 @@
-FROM itzg/ubuntu-openjdk-7
+FROM java:openjdk-8u72-jdk
 
 MAINTAINER itzg
 
 ENV CASSANDRA_VERSION 2.2.5
 
 RUN wget -qO /tmp/apache-cassandra.tgz http://mirrors.ibiblio.org/apache/cassandra/$CASSANDRA_VERSION/apache-cassandra-$CASSANDRA_VERSION-bin.tar.gz
-RUN tar -C /opt -zxvf /tmp/apache-cassandra.tgz && \
+RUN tar -C /opt -zxf /tmp/apache-cassandra.tgz && \
   rm /tmp/apache-cassandra.tgz
 
 

cassandra/cassandra.in.sh

@@ -1,19 +1,17 @@
 #!/bin/bash
 
-sed -i -e 's/log4j.rootLogger=.*/log4j.rootLogger=INFO,stdout/' $CASSANDRA_HOME/conf/log4j-server.properties
-
 cassYml=$CASSANDRA_HOME/conf/cassandra.yaml
 
 privateAddr=$(hostname -i)
 
 seeds=${SEEDS:-${PUBLISH_AS:-$privateAddr}}
 
-sed -i -e "s/- seeds:.*/- seeds: \"$seeds\"/" $cassYml
-
-sed -i -e "s/listen_address:.*/listen_address: $privateAddr/" $cassYml
-sed -i -e "s/rpc_address:.*/rpc_address: $privateAddr/" $cassYml
-
-sed -i -e "s#- /var/lib/cassandra/data#- $CASSANDRA_DATA#" $cassYml
+sed -i -e "s/- seeds:.*/- seeds: \"$seeds\"/" \
+  -e "s/listen_address:.*/listen_address: $privateAddr/" \
+  -e "s/rpc_address:.*/rpc_address: $privateAddr/" \
+  -e "s/start_rpc:.*/start_rpc: true/" \
+  -e "s#- /var/lib/cassandra/data#- $CASSANDRA_DATA#" \
+  $cassYml
 
 if [ -n "$PUBLISH_AS" ]; then
   sed -i -e "s/\(\s*#\)\?\s*broadcast_address:.*/broadcast_address: $PUBLISH_AS/" $cassYml
@@ -24,4 +22,3 @@ cp -rn $CASSANDRA_HOME/conf/* $CASSANDRA_CONF
 
 # source the original
 . $CASSANDRA_HOME/bin/orig.cassandra.in.sh
-