Haproxy - zastosowania

HAProxy – zastosowania Łukasz Jagiełło l.jagiello@gratka-technologie.pl

Agenda● Wstęp● Co to HAProxy ?● Zastosowania● Co nowego w wersji 1.5● Podsumowanie

Load Balancing:● Sprzętowe rozwiązania: F5, jetNEXUS, Cisco LD, Loadbalancer.org itd.● Sieciowe rozwiązania (switch, router itd.)● Software

Co mamy na rynku:● HAProxy● Pound● Pure Load Balancer● Pen● Perlbal● Coś jeszcze pewnie się znajdzie...

Co się liczy ?● HAProxy● Pound

Co się naprawdę liczy ?● HAProxy

Co to HAProxy● Darmowy (GPL v2)● Szybki● HA● Load Balancing● Proxy● TCP / HTTP● Multisystemowy

Możliwości● 1U Dual Xeon ~ 15k-30k hit/sec● Splice() syscall – 10Gbit/s● 16kb per session – 60k sesji na GB ramu● 108k HTTP req per second (record !)

Budowa:global log 127.0.0.1 local1 notice user nobody [...]default log global mode http [...]backend apache server www.gr 10.0.0.1:80 check inter 3000 fall 2 rise 2frontend web.example.pl 1.1.1.1:80 default_backend apachelisten web.example.pl 1.1.1.1:80 server www.gr 10.0.0.1:80 check inter 3000 fall 2 rise 2

Zastosowania - HTTPlisten webfarm 192.168.1.1:80 mode http balance roundrobin option httpchk HEAD /index.html HTTP/1.0 server webA 192.168.1.11:80 cookie A check server webB 192.168.1.12:80 cookie B check port 81 inter 2000 server webC 192.168.1.13:80 cookie C check server webD 192.168.1.14:80 cookie D check server bkpA 192.168.1.15:80 cookie A check backup server bkpB 192.168.1.16:80 cookie B check backup

Zastosowania - ACL● frontend frontend 0.0.0.0:80 [...] acl blokada url_reg .*.aspx$ block if blokada [...] acl static_graph url_reg .*.(jpg|gif|png|js|css|ico|swf|htc|pdf|flv)$ use_backend varnish if static_graph● frontend frontend-static 0.0.0.0:801 reqirep ^Host: (.*) Host: static.example.pl default_backend nginx

Zastosowanie – ACL (2)● frontend wiadomosci24.pl 195.8.99.8:80 [...] errorloc 500 http://blad.wiadomosci24.pl/500.html errorloc 502 http://blad.wiadomosci24.pl/502.html errorloc 503 http://blad.wiadomosci24.pl/503.html acl static hdr_reg(host) -i ^(s|d|m|img|www1).(.*.)?wiadomosci24.pl acl blad hdr(host) -i blad.wiadomosci24.pl use_backend cache if static use_backend blad if blad default_backend wiadomosci24

Zastosowania – ACL (3)● acl baltycki.tv hdr_reg(host) ^(www.)?baltycki.tv redirect location http://dziennikbaltycki.pl if baltycki.tv● backend robots_denied option httpchk HEAD /check.txt HTTP/1.0 server robots_denied 127.0.0.1:8000 check inter 3000 fall 2 rise 2 frontend devel 192.168.0.1:80 acl robots url_reg /robots.txt$ use_backend robots_denied if robots default_backend www_devel

Zastosowania – hit ratio● backend cache stick store-request src stick-table type ip size 200k expire 30m server cache01 10.5.0.11:80 check inter 3000 fall 2 rise 2 server cache02 10.5.0.12:80 check inter 3000 fall 2 rise 2 server cache03 10.5.0.13:80 check inter 3000 fall 2 rise 2

Zastosowania – World IPv6 Daydefaults log global mode tcp option dontlognull [...]frontend www.gratka.pl 195.8.99.42:80,2a02:1320:ffff:0:195:8:99:42:80 [...] default_backend wwwlisten ipv6proxy443 2A02:1320:FFFF:FFFF::1:443 mode tcp server ipv4server443 10.0.0.1:443

Zastosowania - HTTPS● Stunnel: [https] accept = 443 connect = 127.0.0.1:4443 TIMEOUTclose = 0● HAProxy: frontend ssl-frontend 0.0.0.0:4443 reqadd SSL: on default_backend www-backend * Pound ma wbudowaną obsługę SSL

Zastosowania - SMTP● listen smtp :25 mode tcp maxconn 500 option tcplog balance roundrobin server smtp1 xx.xx.xx.xx:25 check inter 10000 server smtp2 xx.xx.xx.xx:25 check inter 10000

Zastosowania - MySQL# DB write cluster# Failure scenarios:# - replication up on db01 & db02 = writes to db01# - replication down on db02 = writes to db01# - replication down on db01 = writes to db02# - replication down on db01 & db02 = go nowhere, split-brain, cluster FAIL!# - mysql down on db02 = writes to db01_backup# - mysql down on db01 = writes to db02_backup# - mysql down on db01 & db02 = go nowhere, cluster FAIL!

Zastosowanie – MySQL (2)backend cluster_db_write# - max 1 db server available at all times# - db01 is preferred (top of list)# - db_backups set their up or down based on results from monitor_dbsmode tcpoption tcpkabalance roundrobinoption httpchk GET /dbsserver db01 172.16.0.60:3306 weight 1 check port 9201 inter 1s rise 2 fall 1server db02 172.16.0.61:3306 weight 1 check port 9201 inter 1s rise 2 fall 1 backupserver db01_backup 172.16.0.60:3306 weight 1 check port 9301 inter 1s rise 2 fall 2 addr127.0.0.1 backupserver db02_backup 172.16.0.61:3306 weight 1 check port 9302 inter 1s rise 2 fall 2 addr127.0.0.1 backup

Zastosowanie – SSH/SSL● listen ssl :443 tcp-request inspect-delay 2s acl is_ssl req_ssl_ver 2:3.1 tcp-request content accept if is_ssl use_backend ssh if !is_ssl server www-ssl :444 timeout client 2h backend ssh mode tcp server ssh :22 timeout server 2h

Co nowego w 1.5● frontend a bind ... stick-table type ip size 200k expire 2m store conn_cur acl source_is_abuser sc1_conn_cur gt 2 tcp-request connection track-sc1 src if ! source_is_abuser use_backend slow if source_is_abuser default_backend fast backend slow server a ... maxconn 1 check server b ... maxconn 1 check backend fast server a ... maxconn 10 check server b ... maxconn 10 check

Co nowego w 1.5 (2)● listen ssh bind :22 mode tcp maxconn 100 stick-table type ip size 20 expire 10s store conn_cnt tcp-request content reject if { src_update_count gt 3 } server local 127.0.0.1:22● 3 połączenia SSH na 10sec

Co nowego w 1.5 (3)● peers mypeers peer haproxy1 192.168.0.1:1024 peer haproxy2 192.168.0.2:1024 peer haproxy3 10.2.0.1:1024 backend mybackend mode tcp balance roundrobin stick-table type ip size 20k peers mypeers stick on src server srv1 192.168.0.30:80 server srv2 192.168.0.31:80

Podsumowanie● Wydajna● Konfigurowalna● Dobra dokumentacja● Easy -> Hard● Wieloplatformowa aplikacja● Doskonałe porfolio użytkowników

Gdzie szukać pomocy ?● Dokumentacja: http://haproxy.1wt.eu/download/1.4/doc/● Lista Dyskusyjna: http://www.formilux.org/archives/haproxy/

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Haproxy - zastosowania

by Łukasz Jagiełło on Jun 24, 2011

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