{"id":35486,"date":"2019-10-31T22:04:36","date_gmt":"2019-10-31T19:04:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-http-tcp-balansirovshhika-haproxy-2-0\/"},"modified":"2019-10-31T22:04:36","modified_gmt":"2019-10-31T19:04:36","slug":"vypusk-http-tcp-balansirovshhika-haproxy-2-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-http-tcp-balansirovshhika-haproxy-2-0","title":{"rendered":"Megjelent a HAProxy 2.0 HTTP\/TCP terhel\u00e9smegoszt\u00f3.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.haproxy.com\/blog\/haproxy-2-0-and-beyond\/\">Megjelent<\/a><\/noindex> terhel\u00e9seloszt\u00f3 kiad\u00e1s <noindex><a rel=\"nofollow\" href=\"http:\/\/www.haproxy.org\">HAProxy 2.0<\/a><\/noindex>, amely lehet\u0151v\u00e9 teszi a HTTP-forgalom \u00e9s tetsz\u0151leges TCP-k\u00e9r\u00e9sek eloszt\u00e1s\u00e1t egy szervercsoport k\u00f6z\u00f6tt, figyelembe v\u00e9ve sz\u00e1mos t\u00e9nyez\u0151t (p\u00e9ld\u00e1ul ellen\u0151rzi a szerverek el\u00e9rhet\u0151s\u00e9g\u00e9t, \u00e9rt\u00e9keli a terhel\u00e9si szintet, rendelkezik DDoS elleni v\u00e9delmi eszk\u00f6z\u00f6kkel) \u00e9s v\u00e9gzi az adatok els\u0151dleges sz\u0171r\u00e9s\u00e9t (p\u00e9ld\u00e1ul k\u00e9pes elemezni a HTTP-fejl\u00e9ceket, sz\u0171rni a hib\u00e1s k\u00e9r\u00e9sparam\u00e9terek \u00e1tad\u00e1s\u00e1t, blokkolni az SQL-injekci\u00f3t \u00e9s XSS-t, csatlakoztatni a tartalomfeldolgoz\u00f3 \u00fcgyn\u00f6k\u00f6ket). Az HAProxy szint\u00e9n k\u00e9pes <noindex><a rel=\"nofollow\" href=\"https:\/\/www.haproxy.com\/solutions\/microservices\/\">MITM v\u00e9grehajt\u00e1s\u00e1ra, de blokkol\u00f3dnak a Firefox tan\u00fas\u00edtv\u00e1ny-t\u00e1rol\u00f3j\u00e1nak haszn\u00e1latakor);<\/a><\/noindex> a komponensek k\u00f6lcs\u00f6nhat\u00e1s\u00e1nak koordin\u00e1l\u00e1s\u00e1ra mikroszolg\u00e1ltat\u00e1sokra \u00e9p\u00fcl\u0151 rendszerekben. A projekt k\u00f3dja C nyelven \u00edr\u00f3dott \u00e9s <noindex><a rel=\"nofollow\" href=\"http:\/\/git.haproxy.org\/\">sz\u00e1ll\u00edtva van<\/a><\/noindex> GPLv2 licenc alatt \u00e1ll. A projektet sz\u00e1mos nagy weboldalon haszn\u00e1lj\u00e1k, bele\u00e9rtve az Airbnb, Alibaba, GitHub, Imgur, Instagram, Reddit, StackOverflow, Tumblr, Twitter \u00e9s Vimeo oldalakat.<\/p>\n<p>A kiad\u00e1s fontos jellemz\u0151i:<\/p>\n<ul>\n<li class=\"l\"> \u00daj API ker\u00fclt bemutat\u00e1sra <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/haproxytech\/dataplaneapi\">Data Plan<\/a><\/noindex>, amely lehet\u0151v\u00e9 teszi a HAProxy be\u00e1ll\u00edt\u00e1sainak \u00e9l\u0151 kezel\u00e9s\u00e9t REST Web API-n kereszt\u00fcl. Bele\u00e9rtve lehet\u0151s\u00e9g van backendek \u00e9s szerverek dinamikus hozz\u00e1ad\u00e1s\u00e1ra \u00e9s elt\u00e1vol\u00edt\u00e1s\u00e1ra, ACL-k l\u00e9trehoz\u00e1s\u00e1ra, k\u00e9r\u00e9sek ir\u00e1ny\u00edt\u00e1s\u00e1nak m\u00f3dos\u00edt\u00e1s\u00e1ra, a kezel\u0151k IP-hez val\u00f3 k\u00f6t\u00e9s\u00e9nek megv\u00e1ltoztat\u00e1s\u00e1ra;\n<li class=\"l\"> Hozz\u00e1adva a nbthread direkt\u00edva, amely lehet\u0151v\u00e9 teszi a HAProxy \u00e1ltal haszn\u00e1lt sz\u00e1lak sz\u00e1m\u00e1nak be\u00e1ll\u00edt\u00e1s\u00e1t a t\u00f6bbmagos CPU-k optimaliz\u00e1l\u00e1sa \u00e9rdek\u00e9ben. Alap\u00e9rtelmez\u00e9s szerint a munkasz\u00e1lak sz\u00e1ma a jelenlegi k\u00f6rnyezet CPU-magjainak sz\u00e1m\u00e1t\u00f3l f\u00fcgg\u0151en ker\u00fcl meghat\u00e1roz\u00e1sra, m\u00edg felh\u0151alap\u00fa k\u00f6rnyezetek eset\u00e9ben alap\u00e9rtelmez\u00e9s szerint egy sz\u00e1l van be\u00e1ll\u00edtva. Szoros hat\u00e1rok megad\u00e1s\u00e1hoz MAX_THREADS \u00e9s MAX_PROCS \u00f6sszerendel\u00e9si lehet\u0151s\u00e9gek lettek hozz\u00e1adva, amelyek korl\u00e1tozz\u00e1k a sz\u00e1lak \u00e9s folyamatok sz\u00e1m\u00e1nak fels\u0151 hat\u00e1r\u00e1t;\n<li class=\"l\"> Az bind direkt\u00edva haszn\u00e1lata egyszer\u0171s\u00f6d\u00f6tt a h\u00e1l\u00f3zati c\u00edmekhez t\u00f6rt\u00e9n\u0151 manipul\u00e1torok csatol\u00e1sakor. Az \u00faj be\u00e1ll\u00edt\u00e1sok sor\u00e1n nem sz\u00fcks\u00e9ges a folyamat param\u00e9tereinek meghat\u00e1roz\u00e1sa \u2014 alap\u00e9rtelmez\u00e9s szerint a kapcsolatokat a sz\u00e1lak k\u00f6z\u00f6tt osztj\u00e1k el az akt\u00edv kapcsolatok sz\u00e1ma alapj\u00e1n.\n<li class=\"l\"> Egyszer\u0171s\u00f6d\u00f6tt a napl\u00f3z\u00e1s be\u00e1ll\u00edt\u00e1sa izol\u00e1lt kont\u00e9nerek ind\u00edt\u00e1sakor \u2014 a napl\u00f3 most m\u00e1r ir\u00e1ny\u00edthat\u00f3 stdout-ba \u00e9s stderr-be, valamint b\u00e1rmely megl\u00e9v\u0151 f\u00e1jlelvon\u00f3hoz (p\u00e9ld\u00e1ul \u201elog fd@1 local0\u201d);\n<li class=\"l\"> Alap\u00e9rtelmezetten enged\u00e9lyezve van az HTX (Native HTTP Representation) t\u00e1mogat\u00e1s, amely lehet\u0151v\u00e9 teszi a terhel\u00e9seloszt\u00e1st kiterjesztett funkcionalit\u00e1sok, p\u00e9ld\u00e1ul end-to-end HTTP\/2, Layer 7 Retry \u00e9s gRPC alkalmaz\u00e1s\u00e1val. Az HTX nem helyettes\u00edti a fejl\u00e9cet a hely\u00e9n, hanem az adattitkos\u00edt\u00e1st \u00faj fejl\u00e9c hozz\u00e1ad\u00e1s\u00e1val \u00e9s a r\u00e9gi elt\u00e1vol\u00edt\u00e1s\u00e1val v\u00e9gzi a lista v\u00e9g\u00e9n, lehet\u0151v\u00e9 t\u00e9ve b\u00e1rmilyen kiterjesztett HTTP protokollvari\u00e1ns manipul\u00e1l\u00e1s\u00e1t, meg\u0151rzi a fejl\u00e9c eredeti szemantik\u00e1j\u00e1t, \u00e9s jobb teljes\u00edtm\u00e9ny el\u00e9r\u00e9s\u00e9t teszi lehet\u0151v\u00e9 az HTTP\/2 HTTP\/1.1-re \u00e9s viszont t\u00f6rt\u00e9n\u0151 k\u00f6zvet\u00edt\u00e9sekor.\n<li class=\"l\"> Hivatalosan hozz\u00e1adva a v\u00e9gpontok k\u00f6z\u00f6tti HTTP\/2 \u00fczemm\u00f3d t\u00e1mogat\u00e1sa (minden szakasz kezel\u00e9se HTTP\/2-ben, bele\u00e9rtve a h\u00e1tt\u00e9rszolg\u00e1ltat\u00e1sokkal val\u00f3 kapcsol\u00f3d\u00e1st is, nem csak a proxy \u00e9s az \u00fcgyf\u00e9l k\u00f6z\u00f6tti interakci\u00f3t);\n<li class=\"l\"> Teljes gRPC protokoll k\u00e9tir\u00e1ny\u00fa proxyz\u00e1si t\u00e1mogat\u00e1s bevezetve gRPC folyamok elemz\u00e9s\u00e9vel, egyedi \u00fczenetek kiemel\u00e9s\u00e9vel, a gRPC forgalom napl\u00f3z\u00e1s\u00e1val \u00e9s \u00fczenetek sz\u0171r\u00e9s\u00e9vel ACL seg\u00edts\u00e9g\u00e9vel. A gRPC lehet\u0151v\u00e9 teszi a k\u00fcl\u00f6nb\u00f6z\u0151 programoz\u00e1si nyelveken \u00edrt mikroszolg\u00e1ltat\u00e1sok m\u0171k\u00f6d\u00e9s\u00e9t, amelyek egy univerz\u00e1lis API-n kereszt\u00fcl kommunik\u00e1lnak egym\u00e1ssal. A gRPC h\u00e1l\u00f3zati interakci\u00f3ja a HTTP\/2 protokoll f\u00f6l\u00f6tt val\u00f3sul meg, \u00e9s a Protocol Buffers adatsoroz\u00e1s\u00e1hoz \u00e9p\u00fcl.\n<li class=\"l\"> Hozz\u00e1adva a \u201eLayer 7 Retries\u201d m\u00f3d t\u00e1mogat\u00e1sa, amely lehet\u0151v\u00e9 teszi HTTP-k\u00e9relmek ism\u00e9telt k\u00fcld\u00e9s\u00e9t programhib\u00e1k eset\u00e9n, amelyek nem kapcsol\u00f3dnak h\u00e1l\u00f3zati kapcsolati probl\u00e9m\u00e1khoz (p\u00e9ld\u00e1ul v\u00e1lasz hi\u00e1ny\u00e1ban vagy \u00fcres v\u00e1lasz eset\u00e9n POST-k\u00e9relemn\u00e9l). A m\u00f3d letilt\u00e1s\u00e1hoz a \u201ehttp-request\u201d opci\u00f3hoz hozz\u00e1adva van a \u201edisable-l7-retry\u201d jelz\u0151, finomhangol\u00e1shoz pedig a defaults, listen \u00e9s backend szekci\u00f3kban el\u00e9rhet\u0151 a \u201eretry-on\u201d opci\u00f3. Az ism\u00e9telt k\u00fcld\u00e9shez el\u00e9rhet\u0151k a k\u00f6vetkez\u0151 jelz\u00e9scsoportok: all-retryable-errors, none, conn-failure, empty-response, junk-response, response-timeout, 0rtt-rejected, valamint a visszaadott \u00e1llapotk\u00f3dok (404 stb.) szerinti kapcsol\u00f3d\u00e1s;\n<li class=\"l\"> \u00daj folyamatkezel\u0151t (Process Manager) val\u00f3s\u00edtottunk meg, amely lehet\u0151v\u00e9 teszi k\u00fcls\u0151 v\u00e9grehajthat\u00f3 f\u00e1jlok megh\u00edv\u00e1s\u00e1nak kezel\u00e9s\u00e9t az HAProxy sz\u00e1m\u00e1ra.<br \/>\nP\u00e9ld\u00e1ul k\u00fcls\u0151 feldolgoz\u00f3k\u00e9nt val\u00f3sult meg az API Data Plan (\/usr\/sbin\/dataplaneapi), valamint k\u00fcl\u00f6nf\u00e9le Offload-folyamatkezel\u0151 motorok;<\/p>\n<li class=\"l\"> .NET Core, Go, Lua \u00e9s Python sz\u00e1m\u00e1ra hozz\u00e1adva az SPOE (Stream Processing Offload Engine) \u00e9s SPOP (Stream Processing Offload Protocol) kiterjeszt\u00e9sek fejleszt\u00e9s\u00e9hez sz\u00fcks\u00e9ges k\u00f6t\u00f6d\u00e9sek. Kor\u00e1bban a kiterjeszt\u00e9s fejleszt\u00e9se csak C nyelven volt t\u00e1mogatott;\n<li class=\"l\"> Hozz\u00e1adtunk egy k\u00fcls\u0151 feldolgoz\u00f3t spoa-mirror (\\\/usr\\\/sbin\\\/spoa-mirror) a k\u00e9r\u00e9sek egy k\u00fcl\u00f6n szerverre val\u00f3 t\u00fck\u00f6rre \u00e1ll\u00edt\u00e1s\u00e1hoz (p\u00e9ld\u00e1ul a munkafolyamat egy r\u00e9sz\u00e9nek m\u00e1sol\u00e1s\u00e1hoz az k\u00eds\u00e9rleti k\u00f6rnyezet val\u00f3s terhel\u00e9s mellett t\u00f6rt\u00e9n\u0151 tesztel\u00e9s\u00e9re);\n<li class=\"l\"> Bemutatva  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/haproxytech\/kubernetes-ingress\/\">HAProxy Kubernetes Ingress Controller<\/a><\/noindex> a Kubernetes platform integr\u00e1ci\u00f3j\u00e1nak biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben;\n<li class=\"l\"> Be\u00e9p\u00edtett t\u00e1mogat\u00e1st kapott a statisztik\u00e1k export\u00e1l\u00e1s\u00e1hoz a monitoring rendszerbe <noindex><a rel=\"nofollow\" href=\"https:\/\/prometheus.io\/\">Prometheus<\/a><\/noindex>;\n<li class=\"l\"> Kiterjesztett\u00fck a Peers Protocol protokollt, amelyet m\u00e1s csom\u00f3pontokkal val\u00f3 inform\u00e1ci\u00f3cser\u00e9re haszn\u00e1lnak az HAProxy-val. Bele\u00e9rtve a Heartbeat \u00e9s a titkos\u00edtott adat\u00e1tvitel t\u00e1mogat\u00e1s\u00e1t;\n<li class=\"l\"> A \u201elog\u201d direkt\u00edv\u00e1hoz hozz\u00e1adva a \u201esample\u201d param\u00e9ter, amely lehet\u0151v\u00e9 teszi, hogy csak a k\u00e9relmek egy r\u00e9sz\u00e9t, p\u00e9ld\u00e1ul 10-b\u0151l 1-et napl\u00f3zzunk, elemz\u0151 minta l\u00e9trehoz\u00e1s\u00e1hoz;\n<li class=\"l\"> Hozz\u00e1adva az automatikus profiloz\u00e1s m\u00f3d (profiling.tasks direkt\u00edva, amely az auto, on \u00e9s off \u00e9rt\u00e9keket fogadhatja el). Az automatikus profiloz\u00e1s akkor kapcsol be, ha az \u00e1tlagos k\u00e9sleltet\u00e9s meghaladja az 1000 ms-t. A profiloz\u00e1si adatok megtekint\u00e9s\u00e9hez a Runtime API-ban hozz\u00e1adva a \u201eshow profiling\u201d parancs, vagy lehet\u0151s\u00e9g van a statisztik\u00e1k napl\u00f3ba t\u00f6rt\u00e9n\u0151 vissza\u00e1ll\u00edt\u00e1s\u00e1ra;\n<li class=\"l\"> Hozz\u00e1adtuk a b_backend szerverek el\u00e9r\u00e9s\u00e9nek t\u00e1mogat\u00e1s\u00e1t SOCKS4 protokollal;\n<li class=\"l\"> Hozz\u00e1adott v\u00e9gpont (end-to-end, a k\u00e9relmek feldolgoz\u00e1si folyamat\u00e1nak \u00fatvonal\u00e1n, bele\u00e9rtve a backend-et) t\u00e1mogat\u00e1sa a TCP-kapcsolatok gyors megnyit\u00e1si mechanizmus\u00e1nak (TFO \u2014 TCP Fast Open, RFC 7413) haszn\u00e1lat\u00e1val, amely lehet\u0151v\u00e9 teszi a kapcsolatok l\u00e9trehoz\u00e1s\u00e1hoz sz\u00fcks\u00e9ges l\u00e9p\u00e9sek sz\u00e1m\u00e1nak cs\u00f6kkent\u00e9s\u00e9t az els\u0151 \u00e9s m\u00e1sodik l\u00e9p\u00e9s egyetlen k\u00e9rd\u00e9ss\u00e9 val\u00f3 kombin\u00e1l\u00e1s\u00e1val a klasszikus 3 l\u00e9pcs\u0151s kapcsolatmeghat\u00e1roz\u00e1si folyamatban, \u00e9s lehet\u0151v\u00e9 teszi adatok k\u00fcld\u00e9s\u00e9t a kapcsolat l\u00e9trehoz\u00e1s\u00e1nak korai szakasz\u00e1ban;\n<li class=\"l\"> \u00daj m\u0171veletek ker\u00fcltek hozz\u00e1ad\u00e1sra:\n<ul>\n<li class=\"l\"> \u201ehttp-request replace-uri\u201d az URL-ek cser\u00e9j\u00e9hez regul\u00e1ris kifejez\u00e9ssel;\n<li class=\"l\"> \u201etcp-request content do-resolve\u201d \u00e9s \u201ehttp-request do-resolve\u201d a gazdag\u00e9pn\u00e9v felold\u00e1s\u00e1hoz;\n<li class=\"l\">  \u201etcp-request content set-dst\u201d \u00e9s \u201etcp-request content set-dst-port\u201d a c\u00e9l IP-c\u00edm \u00e9s port behelyettes\u00edt\u00e9s\u00e9hez.\n<\/ul>\n<li class=\"l\"> \u00daj konvert\u00e1l\u00f3 modulok ker\u00fcltek hozz\u00e1ad\u00e1sra:\n<ul>\n<li class=\"l\"> aes_gcm_dev mint\u00e1k AES128-GCM, AES192-GCM \u00e9s AES256-GCM algoritmusokkal t\u00f6rt\u00e9n\u0151 dek\u00f3dol\u00e1sra;\n<li class=\"l\"> protobuf a Protocol Buffers \u00fczenetek mez\u0151inek kiemel\u00e9s\u00e9re;\n<li class=\"l\"> ungrpc a gRPC \u00fczenetek mez\u0151inek kiemel\u00e9s\u00e9re.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50904\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0431\u0430\u043b\u0430\u043d\u0441\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 HAProxy 2.0, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0442\u044c HTTP-\u0442\u0440\u0430\u0444\u0438\u043a \u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 TCP-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u043c\u0435\u0436\u0434\u0443 \u0433\u0440\u0443\u043f\u043f\u043e\u0439 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u0443\u0447\u0438\u0442\u044b\u0432\u0430\u044f \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u0444\u0430\u043a\u0442\u043e\u0440\u043e\u0432 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u043e\u0446\u0435\u043d\u0438\u0432\u0430\u0435\u0442 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438, \u0438\u043c\u0435\u0435\u0442 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f DDoS) \u0438 \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442 \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u0443\u044e \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u044e \u0434\u0430\u043d\u043d\u044b\u0445 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u043e\u0436\u043d\u043e \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u044c HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0438, \u043e\u0442\u0444\u0438\u043b\u044c\u0442\u0440\u043e\u0432\u044b\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0443 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u044b\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u0437\u0430\u043f\u0440\u043e\u0441\u0430, \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 SQL \u0438 XSS, \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0430\u0433\u0435\u043d\u0442\u044b \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430). HAProxy \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u0435\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35486","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0431\u0430\u043b\u0430\u043d\u0441\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 HAProxy.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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