在win Server 2008 R2下突破Rabbitmq的socket限制數
日期：2017/1/20 17:28:56 編輯：Windows Server常見問題解答
利用Rabbitmq進行各類業務系統（如SAP、OA、EHR、KMS、訪客系統、AD等）的集成和接口，已有很長一段時間了，初步建立了企業服務總線（ESB）。隨著新業務系統的不斷接入到ESB中，在實踐中也發現了一些問題並總結了一些經驗，下文主要介紹如何在windows下突破Rabbitmq的socket限制數，以便為需要使用的同學分享一些實際經驗，後續將陸續分享一些技術經驗。
1、 RabbitMQ_Limits文檔說明
Status of node rabbit@MYSERVER ...
[{pid,6604},
{running_applications,
[{rabbitmq_management,"RabbitMQ Management Console","2.8.2"},
{xmerl,"XML parser","1.3"},
{rabbitmq_management_agent,"RabbitMQ Management Agent","2.8.2"},
{amqp_client,"RabbitMQ AMQP Client","2.8.2"},
{rabbit,"RabbitMQ","2.8.2"},
{os_mon,"CPO CXC 138 46","2.2.8"},
{sasl,"SASL CXC 138 11","2.2"},
{rabbitmq_mochiweb,"RabbitMQ Mochiweb Embedding","2.8.2"},
{webmachine,"webmachine","1.7.0-rmq2.8.2-hg"},
{mochiweb,"MochiMedia Web Server","1.3-rmq2.8.2-git"},
{inets,"INETS CXC 138 49","5.8"},
{mnesia,"MNESIA CXC 138 12","4.6"},
{stdlib,"ERTS CXC 138 10","1.18"},
{kernel,"ERTS CXC 138 10","2.15"}]},
{os,{win32,nt}},
{erlang_version,"Erlang R15B (erts-5.9) [smp:4:4] [async-threads:30]\n"},
{memory,
[{total,22807872},
{processes,8644230},
{processes_used,8644210},
{system,14163642},
{atom,495069},
{atom_used,485263},
{binary,665136},
{code,9611946},
{ets,877468}]},
{vm_memory_high_watermark,0.20002174609205853},
{vm_memory_limit,858993459},
{disk_free_limit,4294500352},
{disk_free,26035458048},
{file_descriptors,
[{total_limit,924},
{total_used,24},
{sockets_limit,829}, 默認的限制sockets數為829
{sockets_used,22}]},
{processes,[{limit,1048576},{used,388}]},
{run_queue,0},
{uptime,72329}]
1、 如何在windows下擴展sockets數量，提高吞吐量？
（1）、需要在windows系統環境變量中設置erlang的ERL_MAX_PORTS
（2）重啟RabbitMQ服務才能正式生效
（3）擴展後的最終效果如下：
