Added a few command-lines for node administration.
diff --git a/cli/src/main/java/org/onlab/onos/cli/NodeAddCommand.java b/cli/src/main/java/org/onlab/onos/cli/NodeAddCommand.java
new file mode 100644
index 0000000..7c9a163
--- /dev/null
+++ b/cli/src/main/java/org/onlab/onos/cli/NodeAddCommand.java
@@ -0,0 +1,34 @@
+package org.onlab.onos.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onlab.onos.cluster.ClusterAdminService;
+import org.onlab.onos.cluster.NodeId;
+import org.onlab.packet.IpPrefix;
+
+/**
+ * Adds a new controller cluster node.
+ */
+@Command(scope = "onos", name = "add-node",
+         description = "Adds a new controller cluster node")
+public class NodeAddCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "nodeId", description = "Node ID",
+              required = true, multiValued = false)
+    String nodeId = null;
+
+    @Argument(index = 1, name = "ip", description = "Node IP address",
+              required = true, multiValued = false)
+    String ip = null;
+
+    @Argument(index = 2, name = "tcpPort", description = "Node TCP listen port",
+              required = false, multiValued = false)
+    int tcpPort = 9876;
+
+    @Override
+    protected void execute() {
+        ClusterAdminService service = get(ClusterAdminService.class);
+        service.addNode(new NodeId(nodeId), IpPrefix.valueOf(ip), tcpPort);
+    }
+
+}