HAProxy Layer 4 Proxy

1. Installation

1. #wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.22.tar.gz
2. #tar zxvf haproxy-1.4.22.tar.gz
3. #cd haproxy-1.4.22
4. #uname -r
5. #make TARGET=linux26 PREFIX=/usr/local/haproxy
6. #make install PREFIX=/usr/local/haproxy
7. #mkdir conf
8. #/usr/local/haproxy/sbin/haproxy -f haproxy.cfg

HAProxy Configuration File (haproxy.cfg)

1. ########### Global Configuration #########
2. global
3. chroot /usr/local/haproxy
4. daemon
5. nbproc 1
6. group nobody
7. user nobody
8. pidfile /usr/local/haproxy/logs/haproxy.pid
9. ulimit–n 65536
10. #spread-checks 5m
11. #stats timeout 5m
12. #stats maxconn 100
14. ######## Default Configuration ############
15. defaults
16. mode tcp #Default mode: { tcp|http|health }. TCP is Layer 4, HTTP is Layer 7, health only returns OK.
17. retries 3 #If connection fails twice, the server is considered unavailable. This can also be configured later.
18. option redispatch #When the server corresponding to serverId goes down, force redirection to another healthy server.
19. option abortonclose #When server load is high, automatically terminate connections that have been in the queue for a long time.
20. maxconn 32000 #Default maximum number of connections.
21. timeout connect 5000ms #Connection timeout.
22. timeout client 30000ms #Client timeout.
23. timeout server 30000ms #Server timeout.
24. #timeout check 2000 #Health check timeout
25. log 127.0.0.1 local0 err #[err warning info debug]
27. ######## SMTP Configuration #################
28. listen smtp 192.168.1.68:25
29. # bind 0.0.0.0:25
30. mode tcp
31. balance roundrobin
32. server s1 192.168.1.118:25 weight 1 maxconn 10000 check inter 10s
33. server s2 192.168.1.240:25 weight 1 maxconn 10000 check inter 10s
35. ######## POP3 Configuration #################
36. listen pop3 192.168.1.68:110
37. # bind 0.0.0.0:25
38. mode tcp
39. balance roundrobin
40. server s1 192.168.1.118:110 weight 1 maxconn 10000 check inter 10s
41. server s2 192.168.1.240:110 weight 1 maxconn 10000 check inter 10s
43. ######## IMAP Configuration #################
44. listen imap 192.168.1.68:143
45. # bind 0.0.0.0:25
46. mode tcp
47. balance roundrobin
48. server s1 192.168.1.118:143 weight 1 maxconn 10000 check inter 10s
49. server s2 192.168.1.240:143 weight 1 maxconn 10000 check inter 10s
51. ######## Statistics Page Configuration ########
52. listen admin_stats 192.168.1.68:8099
53. # bind 0.0.0.0:8099 #Listening port
54. mode http #HTTP Layer 7 mode
55. option httplog #Use HTTP log format
56. #log 127.0.0.1 local0 err
57. maxconn 5
58. stats refresh 30s #Auto-refresh interval for statistics page
59. stats uri /stats #Statistics page URL
60. stats realm XingCloud Haproxy #Prompt text on the statistics page password box
61. stats auth admin:admin #Username and password settings for the statistics page
62. stats hide–version #Hide HAProxy version information on the statistics page

Monitoring Diagram: