Updating to 3.0.6 and switch to prometheus for monitoring:

Dockerfile

@@ -1,15 +1,10 @@
-FROM cassandra:3.0.5
+FROM cassandra:3.0.6
 
-RUN apt-get update \
-	&& apt-get -y install curl sysstat netcat rsync
+RUN mkdir /prometheus
+ADD "https://bitbucket.org/sagent/downloads/downloads/jmx_prometheus_javaagent-0.6.jar" /prometheus
+RUN chmod 644 /prometheus/jmx_prometheus_javaagent-0.6.jar
+ADD cassandra.yml /prometheus/cassandra.yml
 
-RUN curl -L http://downloads.datastax.com/community/datastax-agent-5.2.4.tar.gz | tar xz
-RUN ln -s /datastax-agent-5.2.4 /datastax-agent
+ENV JVM_OPTS "$JVM_OPTS -javaagent:/prometheus/jmx_prometheus_javaagent-0.6.jar=61621:/prometheus/cassandra.yml "
 
-RUN mv /docker-entrypoint.sh /cassandra-entrypoint.sh
-
-ADD docker-entrypoint.sh /docker-entrypoint.sh
-ADD agent-entrypoint.sh /agent-entrypoint.sh
-ADD log4j.opscenter.properties /datastax-agent/conf/log4j.properties
-
-EXPOSE 61621
+EXPOSE 61621

cassandra.yml

@@ -0,0 +1,14 @@
+---
+lowercaseOutputLabelNames: true
+lowercaseOutputName: true
+rules:
+- pattern: org.apache.cassandra.metrics<type=(Connection|Streaming), scope=(\S*), name=(\S*)><>(Count|Value)
+  name: cassandra_$1_$3
+  labels:
+    address: "$2"
+- pattern: org.apache.cassandra.metrics<type=(\S*)(?:, ((?!scope)\S*)=(\S*))?(?:, scope=(\S*))?,
+    name=(\S*)><>(Count|Value)
+  name: cassandra_$1_$5
+  labels:
+    "$1": "$4"
+    "$2": "$3"