1.基础安装
2.本机IP：192.168.56.15
[root@bogon examples]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /usr/local/haproxy uid 99 gid 99 daemon nbproc 1 pidfile /usr/local/haproxy/logs/haproxy.pid log 127.0.0.1 local0 info defaults option http-keep-alive maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen stats mode http bind 0.0.0.0:9999 stats enable log global stats uri /haproxy-status stats auth haadmin:123456 listen web_port bind 0.0.0.0:80 mode tcp log global [root@bogon examples]# [root@bogon examples]# /etc/init.d/haproxy restart Restarting haproxy (via systemctl): [ OK ] [root@bogon examples]#http://192.168.56.15:9999/haproxy-status
3.对后端代理
查看负载状况
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haproxy调度算法
HAProxy的算法有如下8种： roundrobin，表示简单的轮询， static-rr，表示根据权重，建议关注； leastconn，表示最少连接者先处理，建议关注； source，表示根据请求源IP，建议关注； uri，表示根据请求的URI； url_param，表示根据请求的URl参数'balanceurl_param' requires an URL parameter name hdr(name)，表示根据HTTP请求头来锁定每一次HTTP请求； rdp-cookie(name)，表示根据据cookie(name)来锁定并哈希每一次TCP请求。haproxy的摘除节点的 yum安装的
global maxconn 100000 chroot /var/lib/haproxy user haproxy group haproxy daemon nbproc 1 pidfile /usr/local/haproxy/logs/haproxy.pid stats socket /var/lib/haproxy.sock mode 600 level admin log 127.0.0.1 local10 info defaults option http-keep-alive maxconn 100000 mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms listen stats mode http bind 0.0.0.0:8888 stats enable stats uri /haproxy-status stats auth haproxy:saltstack frontend frontend_www_example_com bind 192.168.56.21:80 mode http option httplog log global default_backend backend_www_example_com backend backend_www_example_com option forwardfor header X-REAL-IP option httpchk HEAD / HTTP/1.0 balance roundrobin server web-node1 192.168.56.11:8080 check inter 2000 rise 30 fall 15 server web-node2 192.168.56.12:8080 check inter 2000 rise 30 fall 15 [root@web-node1 ~]#
这样就能吧haproxy的节点删除或者增加
echo "disable server backend_www_example_com/web-node1" | socat /var/lib/haproxy.sock stdio echo "enable server backend_www_example_com/web-node1" | socat /var/lib/haproxy.sock stdio
haproxy增加日志的功能
mkdir /var/log/haproxy chmod a+w /var/log/haproxy /etc/rsyslog.conf 打开选项： $ModLoad imudp $UDPServerRun 514 # Save haproxy log local0.* /var/log/haproxy/haproxy.log vim /etc/sysconfig/rsyslog [root@web-node1 nginx]# cat /etc/sysconfig/rsyslog # Options for rsyslogd # Syslogd options are deprecated since rsyslog v3. # If you want to use them, switch to compatibility mode 2 by "-c 2" See rsyslogd(8) for more details SYSLOGD_OPTIONS="-r -m 0 -c 2" #修改此处 [root@web-node1 nginx]#
haproxy日志里面的localhost 和配置文件有关 这个IP可以修改
log 127.0.0.1 local10 info3.集群配置
192.168.56.11 nginx 反向代理 keepalived haproxy
192.168.56.12 nginx 反向代理 keepalived haproxy
192.168.56.13 nginx 模拟tomcat
192.168.56.14 nginx 模拟tomcat
keepalived的VIP为192.168.56.21
问题：haproxy 不会绑定不存在的VIP 所以启动不起来 so,这样可以绑定不存在的VIP
echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind
vi /etc/sysctl.conf sysctl -p
net.ipv4.ip_nonlocal_bind = 1
开启允许绑定非本机的IP
查看keepalived的配置文件192.168.56.11（主）
[root@web-node1 nginx]# cat /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { notification_email { saltstack@example.com } notification_email_from keepalived@example.com smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id haproxy_ha } vrrp_instance haproxy_ha { state MASTER interface eth0 virtual_router_id 36 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.21 } } [root@web-node1 nginx]#查看keepalived的配置文件192.168.56.12（备）
[root@web-node2 ~]# cat /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { notification_email { saltstack@example.com } notification_email_from keepalived@example.com smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id haproxy_ha } vrrp_instance haproxy_ha { state BACKUP interface eth0 virtual_router_id 36 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.21 } } [root@web-node2 ~]#查看192.168.56.11 haproxy的配置文件
[root@web-node2 ~]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /var/lib/haproxy user haproxy group haproxy daemon nbproc 1 pidfile /usr/local/haproxy/logs/haproxy.pid stats socket /var/lib/haproxy.sock mode 600 level admin log 127.0.0.1 local3 info defaults option http-keep-alive maxconn 100000 mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms listen stats mode http bind 0.0.0.0:8888 stats enable stats uri /haproxy-status stats auth haproxy:saltstack frontend frontend_www_example_com bind 192.168.56.21:80 mode tcp option httplog log global default_backend backend_www_example_com backend backend_www_example_com option forwardfor header X-REAL-IP option httpchk HEAD / HTTP/1.0 balance roundrobin server web-node1 192.168.56.11:8080 check inter 2000 rise 30 fall 15 server web-node2 192.168.56.12:8080 check inter 2000 rise 30 fall 15 [root@web-node2 ~]#查看192.168.56.12 haproxy的配置文件
[root@web-node1 nginx]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /var/lib/haproxy user haproxy group haproxy daemon nbproc 1 pidfile /usr/local/haproxy/logs/haproxy.pid stats socket /var/lib/haproxy.sock mode 600 level admin #log 127.0.0.1 local3 info log 192.168.56.21 local0 debug defaults option http-keep-alive maxconn 100000 mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms listen stats mode http bind 0.0.0.0:8888 stats enable stats uri /haproxy-status stats auth haproxy:saltstack frontend frontend_www_example_com bind 192.168.56.21:80 mode http option httplog log global default_backend backend_www_example_com backend backend_www_example_com option forwardfor header X-REAL-IP option httpchk HEAD / HTTP/1.0 balance roundrobin server web-node1 192.168.56.11:8080 check inter 2000 rise 30 fall 15 server web-node2 192.168.56.12:8080 check inter 2000 rise 30 fall 15 [root@web-node1 nginx]#查看192.168.56.11的nginx反向代理的配置文件(最简单的配置 demo)
[root@web-node1 nginx]# cat /etc/nginx/nginx.conf worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream server_pools { server 192.168.56.13:8080 weight=1; server 192.168.56.14:8080 weight=1; } server { listen 192.168.56.11:8080; server_name blog.liuhaixiao.com; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } } [root@web-node1 nginx]#查看192.168.56.12的nginx反向代理的配置文件(最简单的配置 demo)
[root@web-node2 ~]# cat /etc/nginx/nginx.conf worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream server_pools { server 192.168.56.13:8080 weight=1; server 192.168.56.14:8080 weight=1; } server { listen 192.168.56.12:8080; server_name blog.liuhaixiao.com; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } } [root@web-node2 ~]#查看192.168.56.13的nginx web容器 [root@web-node3 html]# cat /usr/share/nginx/html/index.html node-2 查看192.168.56.14的nginx web容器 [root@web-node4 html]# cat /usr/share/nginx/html/index.html node-1检查VIP zai 192.168.56.11上面
[root@web-node1 nginx]# ip addr 1: lo:现在把本地的电脑blog.liuhaixiao.com 解析到192.168.56.21上面去
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新添加：192.168.56.15 增加一个nginx 域名
haproxy 监听80端口 nginx 监听的端口千万不能和后端tomcat一样 否则回包回不来
[root@web-node1 ~]# cat /etc/nginx/nginx.conf worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream server_pools { server 192.168.56.13:8080 weight=1; server 192.168.56.14:8080 weight=1; } upstream server_tt { server 192.168.56.15:8080 weight=1; } server { listen 81; server_name blog.liuhaixiao.com; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } server { listen 81; server_name blog.sanlang.com; location / { proxy_pass http://server_tt; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } } [root@web-node1 ~]#
3是 另外一台服务器的192.168.56.15 tomcat/nginx 的页面
haproxy具体参数请参考：
http://www.cnblogs.com/zhang789/p/6057402.html
haproxy:多域名参考
基于域名负载均衡的Haproxy配置
http://blog.csdn.net/youyudehexie/article/details/7606504
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