HAproxy 설치 - 고가용성

환경

• Ubuntu 22.04
• HAProxy version 2.8.7

---

구성

• VIP 10.10.x.181
• haproxy1 10.10.x.183
• haproxy2 10.10.x.182

구성도

---

HAproxy 설치

# 호스트네임 설정
sudo hostnamectl set-hostname haproxy1
sudo hostnamectl set-hostname haproxy2

# apt 최신화
sudo apt update && sudo apt upgrade -y

# haproxy 설치 및 확인
sudo apt-get install --no-install-recommends software-properties-common
sudo add-apt-repository ppa:vbernat/haproxy-2.8
sudo apt-get install -y haproxy=2.8.\*
haproxy -v
HAProxy version 2.8.7-1ppa1~jammy 2024/03/02 - https://haproxy.org/
Status: long-term supported branch - will stop receiving fixes around Q2 2028.
Known bugs: http://www.haproxy.org/bugs/bugs-2.8.7.html
Running on: Linux 6.5.0-17-generic #17~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Jan 16 14:32:32 UTC 2 x86_64

# 실행
sudo systemctl enable haproxy.service && sudo systemctl start haproxy.service
sudo systemctl status haproxy.service

# 설정 추가(web)
sudo vi /etc/haproxy/haproxy.cfg
listen stats
    bind :9000
    stats enable
    stats uri /
    stats auth Admin:xgtest!@

# 재기동 후 확인
sudo systemctl reload haproxy && sudo systemctl status haproxy.service

# 브라우저 확인(Admin:xgtest!@)
10.10.x.182:9000
10.10.x.183:9000

---

HAproxy HA 설정 - keepalived

# 환경설정
sudo vi /etc/sysctl.conf
net.ipv4.ip_nonlocal_bind=1
sudo sysctl -p

# 설치
sudo apt update && sudo apt install -y keepalived

# 설정파일 생성
sudo vi /etc/keepalived/keepalived.conf
global_defs {
   router_id haproxy1
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 50
    priority 200
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass xgtest
    }
    virtual_ipaddress {
       10.10.x.181
    }
}
---------------------------------------------------
global_defs {
   router_id haproxy2
}

vrrp_instance VI_2 {
    state BACKUP
    interface eth0
    virtual_router_id 50
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass xgtest
    }
    virtual_ipaddress {
       10.10.x.181
    }
}

# 실행 후 확인
sudo systemctl enable keepalived.service && sudo systemctl start keepalived.service
sudo systemctl status keepalived.service

# ip 확인
ip a
....
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
....
    inet 10.10.x.182/24 brd 10.10.x.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet 10.10.x.181/32 scope global eth0
       valid_lft forever preferred_lft forever
....

....
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
...
    inet 10.10.x.183/24 brd 10.10.x.255 scope global eth0
       valid_lft forever preferred_lft forever
....

• 사이트 확인 : VIP:9000