编译安装
yum install gcc pcre-static pcre-devel -y
wget http://www.haproxy.org/download/1.9/src/haproxy-1.9.4.tar.gz -O ~/haproxy.tar.gz
tar xzvf ~/haproxy.tar.gz -C ~/
cd ~/haproxy-1.9.4
make TARGET=linux2628
make install
mkdir -p /etc/haproxy
mkdir -p /var/lib/haproxy
touch /var/lib/haproxy/stats
ln -s /usr/local/sbin/haproxy /usr/sbin/haproxy
cp ~/haproxy-1.9.4/examples/haproxy.init /etc/init.d/haproxy
chmod 755 /etc/init.d/haproxy
systemctl daemon-reload
useradd -r haproxy
haproxy -v
chkconfig haproxy on
防火墙
sudo firewall-cmd --permanent --zone=public --add-service=http
sudo firewall-cmd --permanent --zone=public --add-port=8181/tcp
sudo firewall-cmd --reload
4层配置 haproxy.cfg
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats timeout 30s
user haproxy
group haproxy
daemon
# turn on stats unix socket
#stats socket /var/lib/haproxy/stats mode 600 level admin
defaults
log global
mode http
option httplog
option dontlognull
maxconn 256000
timeout connect 5000
timeout client 50000
timeout server 50000
listen admin_stat
#haproxy的web管理端口 8888，自行设置
bind 0.0.0.0:8888
mode http
stats refresh 30s
#haproxy web管理url，自行设置
stats uri /haproxy_stats
stats realm Haproxy\\ Statistics
#haproxy web管理用户名密码，自行设置
stats auth admin:admin
stats hide-version
frontend http_front
bind *:8098
# stats uri /haproxy?stats
default_backend http_back
backend http_back
balance roundrobin
option httpchk GET /ping
server riakkv1 10.200.124.111:8098 check
server riakkv2 10.200.124.112:8098 check
server riakkv3 10.200.124.113:8098 check
server riakkv4 10.200.124.114:8098 check
server riakkv5 10.200.124.115:8098 check
server riakkv6 10.200.124.116:8098 check
server riakkv7 10.200.124.117:8098 check
server riakkv8 10.200.124.118:8098 check
server riakkv9 10.200.124.119:8098 check
server riakkv10 10.200.124.120:8098 check
frontend tcp_front
bind *:8087
mode tcp
option tcplog
option contstats
option tcpka
default_backend tcp_back
backend tcp_back
balance leastconn
mode tcp
option tcpka
option srvtcpka
server riakkv1 10.200.124.111:8087 check
server riakkv2 10.200.124.112:8087 check
server riakkv3 10.200.124.113:8087 check
server riakkv4 10.200.124.114:8087 check
server riakkv5 10.200.124.115:8087 check
server riakkv6 10.200.124.116:8087 check
server riakkv7 10.200.124.117:8087 check
server riakkv8 10.200.124.118:8087 check
server riakkv9 10.200.124.119:8087 check
server riakkv10 10.200.124.120:8087 check
web管理
http://<load balancer public IP>:<http_front port>/haproxy?stats
web管理加密（http://:8181）
listen stats
bind *:8181
stats enable
stats uri /
stats realm Haproxy\\ Statistics
stats auth username:password
7成配置例子
frontend http_front
bind *:80
stats uri /haproxy?stats
acl url_blog path_beg /blog
use_backend blog_back if url_blog
default_backend http_back
backend http_back
balance roundrobin
server <server name> <private IP>:80 check
server <server name> <private IP>:80 check
backend blog_back
server <server name> <private IP>:80 check
生产环境事例
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
maxconn 600000
user haproxy
group haproxy
daemon
# turn on stats unix socket
#stats socket /var/lib/haproxy/stats mode 600 level admin
defaults
log global
mode http
option httplog
option dontlognull
maxconn 500000
timeout connect 5000
# timeout client 50000
# timeout server 50000
listen WEB-STATUS
bind 0.0.0.0:18080
mode http
# stats refresh 30s
stats uri /haproxy?stats
frontend rabbitmq5672-192.168.200.28:15672
bind *:5672
mode tcp
option tcplog
option contstats
option tcpka
default_backend rabbitmq-nodes
backend rabbitmq-nodes
balance leastconn
mode tcp
option tcpka
option srvtcpka
server mq1 192.168.200.29:5672 check
server mq2 192.168.200.36:5672 check
server mq3 192.168.200.43:5672 check
frontend riak-kv-http8098
bind *:8098
default_backend riak-kv-http-nodes
backend riak-kv-http-nodes
balance static-rr
option httpchk GET /ping
server riakkvh1 192.168.200.18:8098 check
server riakkvh2 192.168.200.19:8098 check
server riakkvh3 192.168.200.16:8098 check
server riakkvh4 192.168.200.12:8098 check
server riakkvh5 192.168.200.21:8098 check
frontend riak-kv-tcp8087
bind *:8087
mode tcp
option tcplog
option contstats
option tcpka
default_backend riak-kv-tcp-nodes
backend riak-kv-tcp-nodes
balance leastconn
mode tcp
option tcpka
option srvtcpka
server riakkvt1 192.168.200.18:8087 check
server riakkvt2 192.168.200.19:8087 check
server riakkvt3 192.168.200.16:8087 check
server riakkvt4 192.168.200.12:8087 check
server riakkvt5 192.168.200.21:8087 check
#TCP 192.168.200.200:8080 wrr
# -> 192.168.200.25:8080 Route 1 0 0
# -> 192.168.200.30:8080 Route 1 0 0
# -> 192.168.200.33:8080 Route 1 0 0
# -> 192.168.200.37:8080 Route 1 0 0
# -> 192.168.200.39:8080 Route 1 0 0
200.245 sit
vi /etc/haproxy/haproxy.cfg
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
maxconn 600000
user haproxy
group haproxy
daemon
defaults
log global
mode http
option httplog
option dontlognull
maxconn 500000
timeout connect 5000
listen WEB-STATUS
bind 0.0.0.0:18080
mode http
stats uri /haproxy?stats
frontend riak-kv-http8098
bind *:8098
default_backend riak-kv-http-nodes
backend riak-kv-http-nodes
balance static-rr
option httpchk GET /ping
server riakkvh1 192.168.200.18:8098 check
server riakkvh2 192.168.200.19:8098 check
frontend riak-kv-tcp8087
bind *:8087
mode tcp
option tcplog
option contstats
option tcpka
default_backend riak-kv-tcp-nodes
backend riak-kv-tcp-nodes
balance leastconn
mode tcp
option tcpka
option srvtcpka
server riakkvt1 192.168.200.18:8087 check
server riakkvt2 192.168.200.19:8087 check
外网配置实例
global
log 127.0.0.1 local0
chroot /var/lib/haproxy
user nobody
group nobody
daemon
defaults
mode http
log global
option httplog
option http-server-close
option dontlognull
option redispatch
option contstats
retries 3
backlog 10000
timeout client 25s
timeout connect 5s
timeout server 60s
timeout tunnel 3600s
timeout http-keep-alive 1s
timeout http-request 15s
timeout queue 30s
timeout tarpit 60s
default-server inter 3s rise 2 fall 3
listen bk_1883
bind *:1883
mode tcp
balance roundrobin
option tcplog
server server1 10.200.77.41:1883 maxconn 10000 check inter 10s weight 1
