Web Server 로드밸런싱 구현 (2)

ha-proxy

L4, L7 계층에서 Reverce Proxy를 이용한 로드밸런서

 

 Mode : http, tcp

 

log 127.0.0.1 lacal2

local2 : indice/shard

 

log level : debug(7) info(6) notice(5) warning(4) err(3) crit(2) alert(1) critical(0)

 

1. 설치

dnf install haproxy
apt install haproxy

 

2. haproxy 설정 삽입

vim /etc/haproxy/haproxy.cfg

frontend tired_fr
    bind *:80
    mode http
    default_backend tired_bac

backend tired_bac
    balance roundrobin
    mode http
    server s1 w1.tired.com check
    server s2 w2.tired.com check
    server s3 w3.tired.com check
    server s4 w4.tired.com check
    errorfile 503 /etc/haproxy/errors/503.http

 

3. haproxy 로깅

vim /etc/rsyslog.d/haproxy.conf

 

local2.* /var/log/haproxy_http.log
# 만약 local2 Index를 사용중일경우 /etc/haproxy/haproxy.cfg에서 수정

 

systemctl restart rsyslog haproxy

 

로그 정보 : 

Dec  3 12:19:29 localhost haproxy[886911]: 172.16.13.19:33708 [03/Dec/2024:12:19:29.697] tired_fr tired_bac/s1 0/0/0/1/1 404 363 - - ---- 2/2/0/0/0 0/0 "GET /CSS/index.css HTTP/1.1"
Dec  3 12:19:29 localhost haproxy[886911]: 172.16.13.19:33702 [03/Dec/2024:12:19:29.755] tired_fr tired_bac/s2 0/0/1/0/1 200 211 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Dec  3 12:19:29 localhost haproxy[886911]: 172.16.13.19:33702 [03/Dec/2024:12:19:29.896] tired_fr tired_bac/s3 0/0/0/1/1 200 1172 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Dec  3 12:19:29 localhost haproxy[886911]: 172.16.13.19:33702 [03/Dec/2024:12:19:29.931] tired_fr tired_bac/s4 0/0/0/1/1 404 361 - - ---- 2/2/1/0/0 0/0 "GET /font_fi.css HTTP/1.1"
Dec  3 12:19:29 localhost haproxy[886911]: 172.16.13.19:33708 [03/Dec/2024:12:19:29.931] tired_fr tired_bac/s1 0/0/1/0/1 404 363 - - ---- 2/2/0/0/0 0/0 "GET /CSS/index.css HTTP/1.1"

 

 

Docs: 

https://www.haproxy.com/documentation/haproxy-configuration-manual/latest/

HAProxy Enterprise Documentation version 3.0r1 (1.0.0-337.394) - Configuration Manual

 

 

 

4. Loadbalancing 트래픽 분석

listen status
    bind :9997
    stats enable
    stats uri /
    stats hide-version
    stats refresh 5s
    stats auth root:asd123!@