我正在尝试在 Redhat Enterprise 7.7 上设置 HAproxy 负载均衡器和粘性会话。在使用 Apache 的双节点 Web 服务器中安装 HAproxy 作为“Web-Load-balance”，并使用 java+jboss 的双节点应用服务器作为“App-Load-Balance”。
笔记：Web 服务器（双节点）已在同一台服务器上安装 Apache 和 HAProxy 笔记：应用服务器（双节点）在同一台服务器上安装 Java+Jboss 和 HAProxy
下面我将与大家分享供应商得到的 4 个测试用例，结果如下：
案例 1：- 测试状态 (OK) 没有问题
- Web1 = 开启
- Web2 = 开启
- App1 = 开启
- App2 = 关闭
案例 2：测试状态（OK）没有问题
- Web1 = 开启
- Web2 = 开启
- App1 = 关闭
- App2 = 开启
案例 3：- 测试状态“App-Load-Balance”服务器无法维护会话 ID（JBOSS）
- Web1 = 开启
- Web2 = 开启
- App1 = 开启
- App2 = 开启
案例 4：- 测试状态“App-Load-Balance”服务器无法维护会话 ID（JBOSS）
- Web1 = 开启
- Web2 = 关闭
- App1 = 开启
- App2 = 开启
我将分享两者的 HAproxy 配置器Web 负载均衡器和应用程序负载均衡器如果我将其编辑完整并从头开始重新输入代码配置，我不介意。
两个节点Web服务器的HAproxy代码如下：
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
defaults
mode http
log global
# option httplog
option dontlognull
#option http-server-close
#option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
#------------------- Haproxy LB -----------------------
frontend ft_http
bind *:880
mode http
default_backend bk_http
frontend ft_https
bind *:8443
mode tcp
default_backend bk_https
backend bk_http
mode http
balance roundrobin
server Web1_SRV 10.10.10.121:80 check
server Web2_SRV 10.10.10.122:80 check
backend bk_https
mode tcp
balance roundrobin
server Web1_SRV 10.10.10.121:443 check
server Web2_SRV 10.10.10.122:443 check
peers Mypeer
peer LB1 10.10.10.121:1024
peer LB2 10.10.10.122:1024
#------------------ Haproxy LB --------------------------
#------------------- HAproxy Status Page -----------------
listen stats
bind *:1978
stats enable
stats hide-version
stats realm Haproxy\ Statistics
stats uri /showus
stats auth admin:admin
Keepalived 作为 web1 的代码：
#---------------------------------------------------------
# Start Keepalived1 -
#----------------------------------------------------------
vrrp_script chk_haproxy {
script "pidof haproxy"
interval 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 40
priority 150
vrrp_unicast_bind 10.10.10.121 #Internal IP of this node
vrrp_unicast_peer 10.10.10.122 #Internal IP of Backup node
virtual_ipaddress {
10.10.10.120
}
track_script {
chk_haproxy
}
}
#----------------------------------------------------------
# End Keepalived1 - WEB1
#---------------------------------------------------------
Keepalived 作为 web2 的代码：
#----------------------------------------------------------
# Start Keepalived2
#----------------------------------------------------------
vrrp_script chk_haproxy {
script "pidof haproxy"
interval 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 40
priority 100
vrrp_unicast_bind 10.10.10.122 #Internal IP of this node
vrrp_unicast_peer 10.10.10.121 #Internal IP of Backup node
virtual_ipaddress {
10.10.10.120
}
track_script {
chk_haproxy
}
}
#----------------------------------------------------------
# End Keepalived2 -WEB2
#---------------------------------------------------------
双节点APP服务器的HAproxy代码如下：
#---------------------------------------------------------------------
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
#-------------------------------------------------------------
defaults
mode tcp
log global
option tcplog
option dontlognull
#option http-server-close
#option forwardfor except 127.0.0.0/8
option redispatch
retries 3
#timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
#timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
#-------------------- Start ----------------------------------
frontend haproxy_inbound
bind *:8888
unique-id-format %{+X}o\ %ci:%cp
unique-id-header X-Unique-ID
option tcp-smart-accept
option splice-request
option splice-response
default_backend LB
backend LB
option tcp-smart-connect
option splice-request
option splice-response
balance hdr(X-Unique-ID)
server APP1_SRV 10.10.24.111:8109 maxconn 10 weight 1 check
server APP2_SRV 10.10.24.112:8109 maxconn 10 weight 1 check
peers Mypeer
peer LB1 10.10.24.111:1024
peer LB2 10.10.24.112:1024
#----------- Start HAPRoxy Status page -----------------------
listen stats
bind *:1978
mode http
stats enable
stats hide-version
stats realm Haproxy\ Statistics
stats uri /showus
stats auth admin:admin
#---------- End HAPRoxy Status page ----------------
APP1 的 Keepalived 代码为：
#----------------------------------------------------------
# Start Keepalived1 -
#----------------------------------------------------------
vrrp_script chk_haproxy {
script "pidof haproxy"
interval 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 51
priority 150
vrrp_unicast_bind 10.10.24.111 #Internal IP of this node
vrrp_unicast_peer 10.10.24.112 #Internal IP of Backup node
virtual_ipaddress {
10.10.24.110
}
track_script {
chk_haproxy
}
}
#----------------------------------------------------------
# End Keepalived1 - APP1
#---------------------------------------------------------
APP2 的 Keepalived 代码为：
#----------------------------------------------------------
# Start Keepalived2 -
#----------------------------------------------------------
vrrp_script chk_haproxy {
script "pidof haproxy"
interval 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 51
priority 100
vrrp_unicast_bind 10.10.24.112 #Internal IP of this node
vrrp_unicast_peer 10.10.24.111 #Internal IP of Backup node
virtual_ipaddress {
10.10.24.110
}
track_script {
chk_haproxy
}
}
#----------------------------------------------------------
# End Keepalived2 - APP2
#----------------------------------------------------------
**
HAproxy 的目标是为我们提供负载平衡和粘性会话。
**
谢谢。