Paran Lee
HA Proxy sticky session

HA Proxy sticky session

HA Proxy?

L4 의 TCP (UDP λŠ” μ§€μ›μ•ˆν•¨), L7의 HTTP λΌμš°νŒ… κΈ°λŠ₯을 ν•˜λŠ” μ˜€ν”ˆμ†ŒμŠ€ HA(High Availability) Proxy μ„œλ²„μž„

ν”„λ‘μ‹œν•˜λŠ” λ…Έλ“œλ“€μ„ Heartbeat 둜 Health 체크함

μž₯μ• κ°€ μžˆλŠ” μ„œλΉ„μŠ€λŠ” μ œμ™Έν•˜κ³ , λŒ€μ‘ν•˜λŠ” μ—¬λΆ„μ˜ Stanby μ„œλΉ„μŠ€κ°€ 있으면 이μͺ½μœΌλ‘œ λΌμš°νŒ…ν•΄μ€Œ

L4 λ ˆμ΄μ–΄ λ‹¨κ³„μ˜ Log κΈ°λŠ₯이 있음

Shared frontend 둜 HA Proxy λ…Έλ“œλ„ κ³ κ°€μš©μ„±μ„ κ°€μ§€λ©΄μ„œ ν™•μž₯ κ°€λŠ₯함

IP둜 μ„Έμ…˜ μœ μ§€ν•˜κΈ°

Client IP에 λŒ€ν•œ 해쉬 ν…Œμ΄λΈ”μ„ λ§Œλ“€μ–΄μ„œ μ°°μ‹Ή λΆ™μž„

/etc/haproxy/haproxy.cfg

# ...

# round robin balancing between the various backeands
backend app
    balance roundrobin
    
    # ν΄λΌμ΄μ–ΈνŠΈ 별 IP κ°’μœΌλ‘œ sticky session
    hash-type consistent
    
    server tcpserver01 192.168.10.1:30001 S01 check
    server tcpserver01 192.168.10.2:30002 S02 check
    # server app1 192.168.10.1:30001 check
    # server app2 192.168.10.2:30002 check

# ...
λͺ©μ°¨