python，rabbitmq，pika
正常情况下不许要修改任何配置
三种方式可以修改rabbitmq配置
以下两个配置文件需要自己创建
1环境变量的配置文件 rabbitmq-env.conf 可以配置ports, file locations and names 位置固定不可修改
创建路径/etc/rabbitmq
RABBITMQ_NODE_IP_ADDRESS：网络接口，空代表任何接口
RABBITMQ_NODE_PORT：5672（缺省）
RABBITMQ_NODENAME：rabbit@$HOSTNAME（缺省）
RABBITMQ_CONSOLE_LOG：将控制台输出输出到%RABBITMQ_SERVICENAME%.debug ，位置在RABBITMQ_BASE，可以设置参数为new每次新建一个输出文件，reuse输出置同一个文件
RABBITMQ_CTL_ERL_ARGS：只有在debug模式下有意义
RABBITMQ_SERVER_START_ARGS：
2配置信息的配置文件 rabbitmq.config
创建路径存储在rabbitmq-env.conf的RABBITMQ_CONFIG_FILE= 条目下
可以配置访问权限 , 限制 and clusters, and also plugin settings.
可以设置RabbitMQ core application, Erlang services and RabbitMQ plugins
配置模式参见：
http://www.erlang.org/doc/man/config.html
形如：
[ {mnesia, [{dump_log_write_threshold, 1000}]}, {rabbit, [{tcp_listeners, [5673]}]} ].
主要参数：
| tcp_listeners | {"127.0.0.1", 5672} Default: [5672] |
| ssl_listeners | SSL connections. Default: [] |
| ssl_options | SSL配置 Default: [] |
| vm_memory_high_watermark | See the memory-based flow control documentation. Default: 0.4 |
| vm_memory_high_watermark_paging_ratio | 设置当超过一定系数后将内存写入到文件中 See the memory-based flow control documentation. Default: 0.5 |
| disk_free_limit | memory-based flow control |
| log_levels | 设置log等级，不同等级会选择保存warn，error，info等信息 |
| frame_max | 设置帧的最大容量，大的值会提升性能，小的值会导致延时 Default: 131072 |
| heartbeat | 测试客户端是否还在链接，不设置会提升性能 Default: 580 |
| default_vhost | Virtual host Default: <<"/">> |
| default_user | 缺省用户 Default: <<"guest">> |
| default_pass | 密码 Default: <<"guest">> |
| default_user_tags | 用户标签 Default: [administrator] |
| default_permissions | Permissions to assign to the default user when creating it. Default: [<<".*">>, <<".*">>, <<".*">>] |
| cluster_nodes | Set this to cause clustering to happen automatically when a node starts for the very first time. The first element of the tuple is the nodes that the node will try to cluster to. The second element is either disc or ram and determines the node type. Default: {[], disc} |
| server_properties | 发布给客户端的key-value对 Default: [] |
| collect_statistics | 设置信息收集等级用于rmqadmin插件 You probably don't want to change this yourself. Default: none |
| collect_statistics_interval | 信息收集时间间隔ms Default: 5000 |
| auth_mechanisms | SASL authentication mechanisms to offer to clients. Default: ['PLAIN', 'AMQPLAIN'] |
| auth_backends | List of authentication databases to use. Other databases than rabbit_auth_backend_internal are available through plugins. Default: [rabbit_auth_backend_internal] |
| reverse_dns_lookups | true 是rmq进行DNS反向查找 Default: false |
| delegate_count | 集群内部交换信息进程数 part of a cluster, you may wish to increase this value. Default: 16 |
| trace_vhosts | 不要改变 Default: [] |
| tcp_listen_options | Default socket options. You probably don't want to change this. Default: [binary, {packet, raw},
{reuseaddr, true},
{backlog, 128},
{nodelay, true},
{exit_on_close, false}] |
| hipe_compile | 设置为true可以提高性能20%～50% Ubuntu users will need to install the erlang-base-hipe package. Default: false |
| cluster_partition_handling | How to handle network partitions. One of ignore, pause_minority or autoheal. See the documentation on partitions for more information. Default: ignore |
| msg_store_index_module | Implementation module for queue indexing. You probably don't want to change this. Default: rabbit_msg_store_ets_index |
| backing_queue_module | Implementation module for queue contents. You probably don't want to change this. Default: rabbit_variable_queue |
| msg_store_file_size_limit | Tunable value for the persister. You almost certainly should not change this. Default: 16777216 |
| queue_index_max_journal_entries | Tunable value for the persister. You almost certainly should not change this. Default: 65536 |
3控制台参数配置
http://www.rabbitmq.com/configure.html#configuration-file
