(HAProxy)高性能Linux服务器构建实战：系统安全、故障排查、自动化运维、集群架构

40000-50000个并发 处理能力10GB LVS HAproxy四层负载 NGINX HAProxy 七层负载 1、安装 2、配置 global defaults frontend backend listen -- global: maxconn 10000 daemon nbproc 进程数 defaults: mode tcp/httpd retries 3 timeout connect 10s timeout client 20s timeout server 30s timeout check 5s frontend www: bind *.80 mode http option httplog #记录http日志 option forwardfor #记录访问IP option httpclose #关闭TCP连接 log global default_backend htmpool backend htmpool: mode http option redispatch #是否设置cookie option abortonclose #如果服务器负载很高，自动结束处理时间长的连接 balance roundrobin/static-rr/source/leastconn/uri/uri_param/hdr #轮询算法 option httpchk GET /index.php #健康状态检查 server web1 ip:8080 cookie server1 weight 6 check inter 2000 rise 2 fall 3 //定义监控页面 listen admin_stats bind *:9188 mode http log 127.0.0.1 local0 err stats refresh 30s stats uri /status stats realm welcome login\ Haproxy stats auth admin:admin stats hide-version stats admin if TRUE

frontend基于ACL做负载均衡 acl www hdr_beg(host) -i ^(www.z.cn|z.cn) acl bbs hdr_dom(host) -i bbs.z.cn acl url url_sub -i buy_sid= use_backend server_www if www use_backend server_app if url use_backend server_bbs if bbs default_backend server_cache

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实例

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启动

haproxy -f xx.cfg haproxy -c #语法检查

平滑重启

haproxy -f xx.cfg -st cat haproxy.pid

HAProxy+keepalived 高可用