Nginx Upstream Module

Reference documents

Nginx Upstream Module

Http://www.nginx.cn/doc/standard/httpupstream.html

2. #upstream模块: For load Balancing, reverse proxy (proxy fastcgi uwsgi scgi memcached)
   

4. 
   

6. #语法: Upstream name {...}
   

8. Upstream Static_server {
   

10. Server a*:80 max_fails=2 fail_timeout=5s;
    

12. Serve b*:80 max_fails=2 fail_timeout=5s;
    

14. Server c*:80 max_fails=2 fail_timeout=5s backup;
    

16. KeepAlive 4;
    

18. }
    

20. Groups of #定义了一个名为static_server
    

22. The ip+ of the #server + back-end server corresponds to the port number that provides the service
    

24. #max_fails: The number of failed requests defaults to 2, which returns the error defined by the Proxy_next_upstream module when the maximum number of times is exceeded
    

26. #fail_timeout: It is associated with max_fails, if the request fails within 5s 2 times, then Nginx thinks this server has been hung, so that no longer query it within 5s
    

28. #backup: Indicates that Nginx will distribute the request only when the backend server is unavailable
    

30. 
    

32. # KeepAlive 4: Activate a long connection to the backend machine, support HTTP fastcgi memcache, this number should be set to a small point so that the backend server can accept the new connection at the same time, if the number is exceeded, the least recently used connection will be closed.
    

34. #srun_id =pnet1: Indicates that a label is set on this server, primarily to differentiate back-end servers
    

36. 
    

38. #jvm_route: Based on Jsessionid in a cookie, determine which server the request is sent to the backend
    

40. #通过jvm_route解决session不一致的问题
    

42. Upstream Puic-net {
    

44. Server e*:39921 srun_id=pnet1 max_fails=2 fail_timeout=5s;
    

46. Server f*:10021 Srun_id=pnet2 max_fails=2 fail_timeout=5s;
    

48. Server g*:11021 srun_id=pnet3 max_fails=2 fail_timeout=5s;
    

50. Server h*:39922 srun_id=pnet4 max_fails=2 fail_timeout=5s;
    

52. Jvm_route $cookie _jsessionid|sessionid Reverse;
    

54. KeepAlive 4;
    

56. }

This article is from the It Dick thread blog, so be sure to keep this source http://68686789.blog.51cto.com/10438688/1750596

Nginx Upstream Module