Taisomas HAProxy

'''HAProxy''' yra nemokamas, labai greitas ir patogus sprendimas siūlantis aukšto pasiekiamumo ir resursų balancavimo bei [[proxy]] sprendimus [[TCP]] ir [[HTTP]]-paremtoms aplikacijoms. Sukurtas aptarnauti labai apkrautas internetines svetaines, aptarnauja pasaulyje labiausiai lankomas. Per metų metus tapo de-facto standartiniu [[Atviras kodas|atviro kodo]] resursų balanceriu, leidžiamu su populiariausiomis [[Linux]] distribucijomis ir naudojamas populiarausiose debesų platformose. Nesireklamuojantis įrankis, kurį žino tiktai administratoriai :-)

* https://www.digitalocean.com/community/tutorials/how-to-use-haproxy-to-set-up-http-load-balancing-on-an-ubuntu-vps
* https://lesterchan.net/blog/2015/05/18/getting-real-ip-for-nginx-blocking-ip-on-haproxy/

== WebSocket ==
 frontend websocket
 bind *:8890 ssl crt /etc/ssl/org/fullchain.pem
    tcp-request inspect-delay 500ms
    tcp-request content accept if HTTP
    default_backend nodes_websocket
 frontend mysql
 backend nodes_websocket
 mode http
 option forwardfor
    option http-server-close
    option forceclose
    no option httpclose
    cookie SRVNAME insert
    server app2 10.36.36.9:8890 cookie S2 check
    server app3 10.36.36.10:8890 cookie S3 check

== Nginx ==

 frontend nginx
    bind *:80
    bind *:443 ssl crt /etc/ssl/org/fullchain.pem
    redirect scheme https if !{ ssl_fc } # jeigu ne https force redirectas
    mode http
    maxconn 10000
    stats enable # statistikos
    stats uri /haproxy?stats
    # stats realm Strictly\ Private
    # stats auth A_Username:YourPassword
    # stats auth Another_User:passwd
    default_backend nodes_nginx
 backend nodes_nginx
    mode http
    balance roundrobin
    option forwardfor
    cookie SRVNAME insert
    server app2 10.36.36.9:80 cookie S2 check
    server app3 10.36.36.10:80 cookie S3 check
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request add-header X-Forwarded-Proto https if { ssl_fc }

== MySQL ==
MySQL serveriuose sukuriam haproxy_check vartotoja:
 uninstall plugin validate_password;
 create user 'haproxy_check'@'10.36.36.8';

 frontend mysql
   bind 10.36.36.8:3307
   mode tcp
   default_backend nodes_mysql
 backend nodes_mysql
 mode tcp
 option tcpka
        option mysql-check user haproxy_check
 balance roundrobin
 server app2 10.36.36.9:3306 check
 server app3 10.36.36.10:3306 check

[[Category:Tinklas]]
[[Category:HA]]
[[Category:Linux]]
[[Category:Duomenų bazės]]