Here's the app.config generated by the same run I used to create this: https://gist.github.com/joedevivo/7305410

generated.app.config

[{riak_sysmon,
     [{process_limit,30},
      {port_limit,2},
      {gc_ms_limit,0},
      {heap_word_limit,40111000},
      {busy_port,true},
      {busy_dist_port,true}]},
 {yokozuna,
     [{solr_port,8093},
      {solr_jmx_port,8985},
      {solr_jvm_args,
          "-Xms1g -Xmx1g -XX:+UseStringCache -XX:+UseCompressedOops"},
      {yz_dir,"./data/yz"},
      {enabled,false}]},
 {riak_repl,
     [{data_root,"./data/riak_repl/"},
      {max_fssource_cluster,5},
      {max_fssource_node,1},
      {max_fssink_node,1},
      {fullsync_on_connect,true},
      {rtq_max_bytes,104857600},
      {rt_heartbeat_interval,15},
      {rt_heartbeat_timeout,15},
      {proxy_get,disabled}]},
 {snmp,
     [{agent,
          [{net_if,[{options,[{bind_to,true}]}]},
           {config,[{dir,"./etc/snmp/agent/conf"},{force_load,true}]},
           {db_dir,"./data/snmp/agent/db"},
           {db_init_error,create_db_and_dir}]}]},
 {riak_snmp,
     [{polling_interval,60000},
      {nodeGetTimeMeanThreshold,0},
      {nodeGetTimeMedianThreshold,0},
      {nodeGetTime95Threshold,0},
      {nodeGetTime99Threshold,0},
      {nodeGetTime100Threshold,0},
      {nodePutTimeMeanThreshold,0},
      {nodePutTimeMedianThreshold,0},
      {nodePutTime95Threshold,0},
      {nodePutTime99Threshold,0},
      {nodePutTime100Threshold,0},
      {repl_traps_enabled,false}]},
 {riak_jmx,
     [{port,41110},
      {sleep_minutes,10},
      {jmx_refresh_seconds,30},
      {enabled,false}]},
 {eleveldb,
     [{data_root,"./data/leveldb"},
      {total_leveldb_mem_percent,90},
      {total_leveldb_mem,1073741824},
      {sync,false},
      {limited_developer_mem,false},
      {write_buffer_size_min,31457280},
      {write_buffer_size_max,62914560},
      {sst_block_size,4096},
      {block_restart_interval,16},
      {verify_checksums,true},
      {verify_compaction,true},
      {use_bloomfilter,true}]},
 {riak_control,[{enabled,false},{auth,userlist},{userlist,[{"user","pass"}]}]},
 {bitcask,
     [{data_root,"./data/bitcask"},
      {open_timeout,4},
      {max_file_size,2147483648},
      {frag_merge_trigger,60},
      {dead_bytes_merge_trigger,536870912},
      {frag_threshold,40},
      {dead_bytes_threshold,134217728},
      {small_file_threshold,10485760},
      {max_fold_age,-1},
      {max_fold_puts,0},
      {expiry_secs,-1},
      {require_hint_crc,true},
      {expiry_grace_time,0},
      {io_mode,erlang},
      {sync_strategy,none},
      {merge_window,always}]},
 {riak_kv,
     [{raw_name,"riak"},
      {anti_entropy_expire,604800000},
      {anti_entropy_concurrency,2},
      {anti_entropy_tick,15000},
      {anti_entropy_data_dir,"./data/anti_entropy"},
      {anti_entropy_leveldb_opts,
          [{write_buffer_size,4194304},{max_open_files,20}]},
      {mapred_name,"mapred"},
      {map_js_vm_count,8},
      {reduce_js_vm_count,6},
      {hook_js_vm_count,2},
      {js_max_vm_mem,8},
      {js_thread_stack,16},
      {http_url_encoding,on},
      {fsm_limit,50000},
      {retry_put_coordinator_failure,on},
      {object_format,v1},
      {warn_object_size,5242880},
      {max_object_size,52428800},
      {warn_siblings,25},
      {max_siblings,100},
      {multi_backend,[]},
      {anti_entropy,{on,[]}},
      {storage_backend,riak_kv_bitcask_backend},
      {anti_entropy_build_limit,{1,3600000}},
      {mapred_2i_pipe,true},
      {vnode_vclocks,true},
      {listkeys_backpressure,true},
      {memory_backend,[{max_memory,4096}]}]},
 {riak_api,[{http,[{"127.0.0.1",8098}]},{pb,[{"127.0.0.1",8087}]}]},
 {riak_core,
     [{cluster_mgr,{"127.0.0.1",9080}},
      {ring_creation_size,64},
      {ring_state_dir,"./data/ring"},
      {handoff_port,8099},
      {platform_bin_dir,"./bin"},
      {platform_data_dir,"./data"},
      {platform_etc_dir,"./etc"},
      {platform_lib_dir,"./lib"},
      {platform_log_dir,"./log"},
      {enable_consensus,false},
      {default_bucket_props,
          [{n_val,3},
           {last_write_wins,false},
           {pr,0},
           {r,quorum},
           {w,quorum},
           {pw,0},
           {dw,quorum},
           {rw,quorum},
           {allow_mult,true}]},
      {dtrace_support,false}]},
 {sasl,[{sasl_error_logger,false}]},
 {lager,
     [{crash_log,"./log/crash.log"},
      {crash_log_msg_size,65536},
      {crash_log_size,10485760},
      {crash_log_date,"$D0"},
      {crash_log_count,5},
      {error_logger_hwm,100},
      {handlers,
          [{lager_file_backend,
               [{file,"./log/console.log"},
                {level,info},
                {size,10485760},
                {date,"$D0"},
                {count,5}]},
           {lager_file_backend,
               [{file,"./log/error.log"},
                {level,error},
                {size,10485760},
                {date,"$D0"},
                {count,5}]}]},
      {error_logger_redirect,true}]}].