HAProxy后端limit session的sum错误

Question

我的配置和下面一样。

frontend stats
    bind *:8181
    maxconn 10
    mode http
    stats enable
    stats refresh 10s
    stats auth admin:password
    stats uri  /haproxy?stats

frontend rserve_frontend
    bind *:8400
    mode tcp
    maxconn 3000
    option tcplog
    timeout client  1m
    default_backend rserve_backend

backend rserve_backend
    mode tcp
    option tcplog
    option log-health-checks
    option redispatch
    log global
    balance roundrobin
    timeout connect 10s
    timeout server 1m
    server server01 192.168.201.19:8400 check maxconn 1500
    server server02v 192.168.200.17:8400 check maxconn 1500

但是不知道为什么后端的maxconnection显示是300

这是一种错误吗？还是我的错误配置？

Answer 1

fullconn 设置的文档稍微介绍了这一点。

Since it's hard to get this value right, haproxy automatically sets it to 10% of the sum of the maxconns of all frontends that may branch to this backend (based on "use_backend" and "default_backend" rules). That way it's safe to leave it unset. However, "use_backend" involving dynamic names are not counted since there is no way to know if they could match or not.

https://www.haproxy.com/documentation/hapee/latest/onepage/#4.2-fullconn

HAProxy后端limit session的sum错误

HAProxy backend limit session's sum is wrong

haproxy