More updates to docker, including more env overrides. For example you can now set cluster name.

someone tell me if this is wrong, but I do not think "examples/cassandra/image/run.sh:    cluster_name \" should have been found

cassandra/README.md

@@ -80,7 +80,14 @@ computer.
 The pods use the [```gcr.io/google-samples/cassandra:v9```](image/Dockerfile)
 image from Google's [container registry](https://cloud.google.com/container-registry/docs/).
 The docker is based on `debian:jessie` and includes OpenJDK 8. This image
-includes a standard Cassandra installation from the Apache Debian repo.
+includes a standard Cassandra installation from the Apache Debian repo.  Through the use
+of environment variables you are able to change values that are inserted into the `cassandra.yaml`.
+
+| ENV VAR       | DEFAULT VALUE  |
+| ------------- |:-------------: |
+| CASSANDRA_CLUSTER_NAME | 'Test Cluster'  |
+| CASSANDRA_NUM_TOKENS  | 32               |
+| CASSANDRA_RPC_ADDRESS | 0.0.0.0          |
 
 ### Custom Seed Provider
 
@@ -229,7 +236,7 @@ spec:
             - /run.sh
           resources:
             limits:
-              cpu: .5
+              cpu: 0.5
           env:
             - name: MAX_HEAP_SIZE
               value: 512M
@@ -239,13 +246,24 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.namespace
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
           image: gcr.io/google-samples/cassandra:v9
           name: cassandra
           ports:
+            - containerPort: 7000
+              name: intra-node
+            - containerPort: 7001
+              name: tls-intra-node
+            - containerPort: 7199
+              name: jmx
             - containerPort: 9042
               name: cql
-            - containerPort: 9160
+            # If you need it it is going away in C* 4.0
-              name: thrift
+            #- containerPort: 9160
+            #  name: thrift
           volumeMounts:
             - mountPath: /cassandra_data
               name: data
@@ -457,16 +475,27 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.namespace
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
           image: gcr.io/google-samples/cassandra:v9
           name: cassandra
           ports:
+            - containerPort: 7000
+              name: intra-node
+            - containerPort: 7001
+              name: tls-intra-node
+            - containerPort: 7199
+              name: jmx
             - containerPort: 9042
               name: cql
-            - containerPort: 9160
+              # If you need it it is going away in C* 4.0
-              name: thrift
+              #- containerPort: 9160
+              #  name: thrift
           resources:
             request:
-              cpu: .5
+              cpu: 0.5
           volumeMounts:
             - mountPath: /cassandra_data
               name: data

cassandra/cassandra-controller.yaml

@@ -22,7 +22,7 @@ spec:
             - /run.sh
           resources:
             limits:
-              cpu: .5
+              cpu: 0.5
           env:
             - name: MAX_HEAP_SIZE
               value: 512M
@@ -32,13 +32,24 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.namespace
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
           image: gcr.io/google-samples/cassandra:v9
           name: cassandra
           ports:
+            - containerPort: 7000
+              name: intra-node
+            - containerPort: 7001
+              name: tls-intra-node
+            - containerPort: 7199
+              name: jmx
             - containerPort: 9042
               name: cql
-            - containerPort: 9160
+            # If you need it it is going away in C* 4.0
-              name: thrift
+            #- containerPort: 9160
+            #  name: thrift
           volumeMounts:
             - mountPath: /cassandra_data
               name: data

cassandra/cassandra-daemonset.yaml

@@ -25,16 +25,27 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.namespace
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
           image: gcr.io/google-samples/cassandra:v9
           name: cassandra
           ports:
+            - containerPort: 7000
+              name: intra-node
+            - containerPort: 7001
+              name: tls-intra-node
+            - containerPort: 7199
+              name: jmx
             - containerPort: 9042
               name: cql
-            - containerPort: 9160
+              # If you need it it is going away in C* 4.0
-              name: thrift
+              #- containerPort: 9160
+              #  name: thrift
           resources:
             request:
-              cpu: .5
+              cpu: 0.5
           volumeMounts:
             - mountPath: /cassandra_data
               name: data

cassandra/image/Dockerfile

@@ -41,6 +41,13 @@ COPY kubernetes-cassandra.jar /kubernetes-cassandra.jar
 
 VOLUME ["/cassandra_data/data"]
 
+# 7000: intra-node communication
+# 7001: TLS intra-node communication
+# 7199: JMX
+# 9042: CQL
+# 9160: thrift service not included cause it is going away
+EXPOSE 7000 7001 7199 9042
+
 USER cassandra
 
 CMD /run.sh

cassandra/image/cassandra.yaml

@@ -22,7 +22,7 @@ cluster_name: 'Test Cluster'
 #
 # If you already have a cluster with 1 token per node, and wish to migrate to
 # multiple tokens per node, see http://wiki.apache.org/cassandra/Operations
-num_tokens: 256
+num_tokens: 32
 
 # initial_token allows you to specify tokens manually.  While you can use # it with
 # vnodes (num_tokens > 1, above) -- in which case you should provide a
@@ -258,7 +258,7 @@ seed_provider:
       parameters:
           # seeds is actually a comma-delimited list of addresses.
           # Ex: "<ip1>,<ip2>,<ip3>"
-          - seeds: "%%ip%%"
+          - seeds: 127.0.0.1
 
 # For workloads with more data than can fit in memory, Cassandra's
 # bottleneck will be reads that need to fetch data from
@@ -364,7 +364,7 @@ ssl_storage_port: 7001
 # address associated with the hostname (it might not be).
 #
 # Setting listen_address to 0.0.0.0 is always wrong.
-listen_address: %%ip%%
+listen_address: 127.0.0.1
 # listen_interface: eth0
 
 # Address to broadcast to other Cassandra nodes
@@ -405,7 +405,7 @@ start_rpc: true
 #
 # Note that unlike listen_address, you can specify 0.0.0.0, but you must also
 # set broadcast_rpc_address to a value other than 0.0.0.0.
-rpc_address: %%ip%%
+rpc_address: 127.0.0.1
 # rpc_interface: eth1
 
 # port for Thrift to listen for clients on

cassandra/image/run.sh

@@ -14,6 +14,54 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-perl -pi -e "s/%%ip%%/$(hostname -I)/g" /etc/cassandra/cassandra.yaml
+set -e
+CFG=/etc/cassandra/cassandra.yaml
+CASSANDRA_RPC_ADDRESS="${CASSANDRA_RPC_ADDRESS:-0.0.0.0}"
+CASSANDRA_NUM_TOKENS="${CASSANDRA_NUM_TOKENS:-32}"
+CASSANDRA_CLUSTER_NAME="${CASSANDRA_CLUSTER_NAME:=Test Cluster}"
+CASSANDRA_LISTEN_ADDRESS=${POD_IP}
+CASSANDRA_BROADCAST_ADDRESS=${POD_IP}
+CASSANDRA_BROADCAST_RPC_ADDRESS=${POD_IP}
+
+# TODO what else needs to be modified
+
+for yaml in \
+  broadcast_address \
+	broadcast_rpc_address \
+	cluster_name \
+	listen_address \
+	num_tokens \
+	rpc_address \
+; do
+  var="CASSANDRA_${yaml^^}"
+	val="${!var}"
+	if [ "$val" ]; then
+		sed -ri 's/^(# )?('"$yaml"':).*/\2 '"$val"'/' "$CFG"
+	fi
+done
+
+# Eventual do snitch $DC && $RACK?
+#if [[ $SNITCH ]]; then
+#  sed -i -e "s/endpoint_snitch: SimpleSnitch/endpoint_snitch: $SNITCH/" $CONFIG/cassandra.yaml
+#fi
+#if [[ $DC && $RACK ]]; then
+#  echo "dc=$DC" > $CONFIG/cassandra-rackdc.properties
+#  echo "rack=$RACK" >> $CONFIG/cassandra-rackdc.properties
+#fi
+
+#
+# see if this is needed
+#echo "JVM_OPTS=\"\$JVM_OPTS -Djava.rmi.server.hostname=$IP\"" >> $CASSANDRA_CONFIG/cassandra-env.sh
+#
+
+# FIXME create README for these args
+echo "Starting Cassandra on $POD_IP"
+echo CASSANDRA_RPC_ADDRESS ${CASSANDRA_RPC_ADDRESS}
+echo CASSANDRA_NUM_TOKENS ${CASSANDRA_NUM_TOKENS}
+echo CASSANDRA_CLUSTER_NAME ${CASSANDRA_CLUSTER_NAME}
+echo CASSANDRA_LISTEN_ADDRESS ${POD_IP}
+echo CASSANDRA_BROADCAST_ADDRESS ${POD_IP}
+echo CASSANDRA_BROADCAST_RPC_ADDRESS ${POD_IP}
+
 export CLASSPATH=/kubernetes-cassandra.jar
 cassandra -f