{"id":31817,"date":"2019-10-31T21:43:19","date_gmt":"2019-10-31T18:43:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vmware-nsx-dlya-samyh-malenkih-chast-5-nastrojka-balansirovshhika-nagruzki\/"},"modified":"2019-10-31T21:43:19","modified_gmt":"2019-10-31T18:43:19","slug":"vmware-nsx-dlya-samyh-malenkih-chast-5-nastrojka-balansirovshhika-nagruzki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/vmware-nsx-dlya-samyh-malenkih-chast-5-nastrojka-balansirovshhika-nagruzki","title":{"rendered":"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/d71067a47ba1093d9783832e76e8eafb.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/432980\/\">Pjesa e par\u00eb. Hyrja<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/441026\/\">Pjesa e dyt\u00eb. Konfigurimi i rregullave t\u00eb Firewall dhe NAT<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/441882\/\">Pjesa e tret\u00eb. Konfigurimi i DHCP<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/444644\/\">Pjesa e kat\u00ebrt. Konfigurimi i rrug\u00ebzimit<\/a><\/noindex><\/p>\n<p>Her\u00ebn e fundit fol\u00ebm p\u00ebr mund\u00ebsit\u00eb e NSX Edge n\u00eb kontekstin e ruter\u00ebve statik\u00eb dhe dinamik\u00eb, dhe sot do t\u00eb merremi me balancuesin.<br \/>\nPara se t\u00eb fillojm\u00eb konfigurimin, do t\u00eb doja t\u00eb kujtoja shum\u00eb shkurt p\u00ebr llojet kryesore t\u00eb balancimit. <noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Teoria<\/h3>\n<p>\nT\u00eb gjitha zgjidhjet e sotme p\u00ebr balancimin e ngarkes\u00ebs zakonisht ndahen n\u00eb dy kategori: balancimi n\u00eb nivelin e kat\u00ebrt (transportit) dhe n\u00eb nivelin e shtat\u00eb (aplikativ) t\u00eb modelit <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A1%D0%B5%D1%82%D0%B5%D0%B2%D0%B0%D1%8F_%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D1%8C_OSI\">OSI<\/a><\/noindex>. Modeli OSI nuk \u00ebsht\u00eb pik\u00eb referimi m\u00eb e mir\u00eb kur b\u00ebhet fjal\u00eb p\u00ebr p\u00ebrshkrimin e metodave t\u00eb balancimit. P\u00ebr shembull, n\u00ebse balancuesi L4 gjithashtu mb\u00ebshtet p\u00ebrfundimin e TLS, a b\u00ebhet ai k\u00ebshtu balancues L7? Por \u00e7far\u00eb t\u00eb b\u00ebjm\u00eb, \u00ebsht\u00eb k\u00ebshtu.<\/p>\n<ul>\n<li><b>Balancuesi L4 <\/b>zakonisht p\u00ebrfaq\u00ebson nj\u00eb proxy mes klientit dhe grupeve t\u00eb disponueshme t\u00eb back-end, i cili p\u00ebrfundon lidhjet TCP (dmth p\u00ebrgjigjet vet\u00eb ndaj SYN), zgjedh back-end dhe nisin nj\u00eb sesion t\u00eb ri TCP n\u00eb drejtim t\u00eb tij, duke d\u00ebrguar autonomisht SYN. Ky lloj \u00ebsht\u00eb nj\u00eb nga bazik\u00ebt, dhe jan\u00eb t\u00eb mundshme edhe variante t\u00eb tjera.<\/li>\n<li><b>Balancuesi L7<\/b> distribuon trafikun n\u00eb backendet e disponueshme m\u00eb \"t\u00eb sofistikuar\" se sa nj\u00eb balancues L4. Ai mund t\u00eb vendos\u00eb p\u00ebr zgjedhjen e backendit bazuar, p\u00ebr shembull, n\u00eb p\u00ebrmbajtjen e mesazhit HTTP (URL, cookie, etj.).<\/li>\n<\/ul>\n<p>\nPavar\u00ebsisht nga lloji, balancuesi mund t\u00eb mb\u00ebshtes\u00eb funksionet e m\u00ebposhtme:<\/p>\n<ul>\n<li> Zbulimi i sh\u00ebrbimeve \u2013 procesi i p\u00ebrcaktimit t\u00eb grupit t\u00eb backend-eve t\u00eb disponueshme (Static, DNS, Consul, Etcd, etj.).<\/li>\n<li>Kontrolli i gatishm\u00ebris\u00eb s\u00eb backend-eve t\u00eb zbuluara (ping aktiv t\u00eb backend-it me k\u00ebrkes\u00eb HTTP, zbulimi pasiv i problemeve n\u00eb lidhjet TCP, p\u00ebrfshirja e disa 503 HTTP-code n\u00eb p\u00ebrgjigje, etj.).<\/li>\n<li>Balancimi vet\u00eb (round robin, seleksion random, hash ip i burimit, URI).<\/li>\n<li>Terminizimi TLS dhe verifikimi i certifikatave.<\/li>\n<li>Opsionet q\u00eb lidhen me sigurin\u00eb (autentifikimi, parandalimi i sulmeve DoS, kufizimi i shpejt\u00ebsis\u00eb) dhe shum\u00eb m\u00eb tep\u00ebr.<\/li>\n<\/ul>\n<p>\nNSX Edge ofron mb\u00ebshtetje p\u00ebr dy m\u00ebnyra implementimi t\u00eb balancuesit:<\/p>\n<p><b>M\u00ebnyra proxy, ose one-arm<\/b>. N\u00eb k\u00ebt\u00eb mod, NSX Edge p\u00ebrdor IP adres\u00ebn e tij si adres\u00eb burimi kur d\u00ebrgon nj\u00eb k\u00ebrkes\u00eb n\u00eb nj\u00ebr\u00ebn nga backend-et. K\u00ebshtu, balansuesi kryen nj\u00ebkoh\u00ebsisht funksionet e NAT-it t\u00eb Burimit dhe Destinacionit. Backend-i e sheh gjith\u00eb trafikun si t\u00eb d\u00ebrguar nga balansuesi dhe i p\u00ebrgjigjet direkt atij. N\u00eb nj\u00eb k\u00ebt\u00eb skem\u00eb, balansuesi duhet t\u00eb jet\u00eb n\u00eb t\u00eb nj\u00ebjtin segment rrjeti me server\u00ebt e brendsh\u00ebm.<\/p>\n<p>Ja si ndodh:<br \/>\n1. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0P\u00ebrdoruesi d\u00ebrgon nj\u00eb k\u00ebrkes\u00eb n\u00eb VIP adres\u00ebn (adresa e balansuesit), e cila \u00ebsht\u00eb konfiguruar n\u00eb Edge.<br \/>\n2. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Edge zgjedh nj\u00ebrin nga backend-et dhe kryen NAT-it t\u00eb destinacionit, duke e z\u00ebvend\u00ebsuar VIP adres\u00ebn me adres\u00ebn e backend-it t\u00eb zgjedhur.<br \/>\n3. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Edge kryen NAT-it t\u00eb burimit, duke e z\u00ebvend\u00ebsuar adres\u00ebn e p\u00ebrdoruesit q\u00eb d\u00ebrgoi k\u00ebrkes\u00ebn me adres\u00ebn e tij.<br \/>\n4. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Paketa d\u00ebrgohet te backend-i i zgjedhur.<br \/>\n5. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Backend-i nuk i p\u00ebrgjigjet direkt p\u00ebrdoruesit, por Edge-it, pasi adresa origjinale e p\u00ebrdoruesit ishte ndryshuar n\u00eb adres\u00ebn e balansuesit.<br \/>\n6. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Edge-i transmeton p\u00ebrgjigjen e serverit te p\u00ebrdoruesi.<br \/>\nSkema m\u00eb posht\u00eb.<br \/>\n <img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/a6073ec63f7aca05d61c5a40de2ba6be.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Rekesi transparente, ose n\u00eb linj\u00eb.<\/b> N\u00eb k\u00ebt\u00eb skenar, balancuesi ka nd\u00ebrfaqe n\u00eb rrjetet e brendshme dhe t\u00eb jashtme. Nuk ka akses t\u00eb drejtp\u00ebrdrejt n\u00eb rrjetin e brendsh\u00ebm nga ai i jashtmi. Balancuesi i ngarkes\u00ebs i integruar vepron si nj\u00eb der\u00eb NAT p\u00ebr makinat virtuale n\u00eb rrjetin e brendsh\u00ebm.<\/p>\n<p>Mekanizmi \u00ebsht\u00eb si m\u00eb posht\u00eb:<br \/>\n1. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0P\u00ebrdoruesi d\u00ebrgon nj\u00eb k\u00ebrkes\u00eb n\u00eb VIP adres\u00ebn (adresa e balansuesit), e cila \u00ebsht\u00eb konfiguruar n\u00eb Edge.<br \/>\n2. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Edge zgjedh nj\u00ebrin nga backend-et dhe kryen NAT-it t\u00eb destinacionit, duke e z\u00ebvend\u00ebsuar VIP adres\u00ebn me adres\u00ebn e backend-it t\u00eb zgjedhur.<br \/>\n3.        Paketa d\u00ebrgohet te backend-i i zgjedhur.<br \/>\n4.        Backend-i merr k\u00ebrkes\u00ebn me adres\u00ebn origjinale t\u00eb p\u00ebrdoruesit (nuk \u00ebsht\u00eb kryer source NAT) dhe i p\u00ebrgjigjet atij direkt.<br \/>\n5.        Trafiku pranohet p\u00ebrs\u00ebri nga balancuesi i ngarkes\u00ebs, pasi n\u00eb skem\u00ebn inline ai zakonisht vepron si dera e paracaktuar p\u00ebr ferm\u00ebn e server\u00ebve.<br \/>\n6.        Edge kryen source NAT p\u00ebr t\u00eb d\u00ebrguar trafikun te p\u00ebrdoruesi, duke p\u00ebrdorur VIP-in e tij si adres\u00eb IP origjinale.<br \/>\nSkema m\u00eb posht\u00eb.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/9ad9adcac02d40db1603aee84387264a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Praktika<\/h3>\n<p>\nN\u00eb platform\u00ebn time testuese, jan\u00eb konfiguruar 3 server\u00eb me Apache, i cili \u00ebsht\u00eb i vendosur p\u00ebr t\u00eb punuar p\u00ebrmes HTTPS. Edge do t\u00eb kryej\u00eb balancimin e k\u00ebrkesave HTTPS me metod\u00ebn round robin, duke p\u00ebr\u00e7uar \u00e7do k\u00ebrkes\u00eb t\u00eb re n\u00eb nj\u00eb server t\u00eb ri.<br \/>\nLe t\u00eb fillojm\u00eb.<\/p>\n<p><b>T\u00eb gjenerojm\u00eb nj\u00eb certifikat\u00eb SSL, e cila do t\u00eb p\u00ebrdoret nga NSX Edge.<\/b><br \/>\nMund t\u00eb importoni nj\u00eb certifikat\u00eb CA t\u00eb vlefshme ose t\u00eb p\u00ebrdorni nj\u00eb t\u00eb vet\u00eb-n\u00ebnshkruar. N\u00eb k\u00ebt\u00eb test do t\u00eb p\u00ebrdor nj\u00eb t\u00eb vet\u00eb-n\u00ebnshkruar.<\/p>\n<ol>\n<li>N\u00eb nd\u00ebrfaqen vCloud Director, kalojm\u00eb te cil\u00ebsimet e sh\u00ebrbimeve Edge.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/df9be9f6d5b92af1cbe19f40459c8d9f.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Shkojm\u00eb te skeda Certifikatat. Nga lista e veprimeve, zgjidhni shtimin e nj\u00eb CSR t\u00eb ri.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/72185bf69cb0c4d8dc0cbadc8fe4f376.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Plot\u00ebsojm\u00eb fushat e nevojshme dhe klikojm\u00eb Ruaj.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/196394d4633d76dfde6d89b8f7049e19.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Zgjidhni CSR-n\u00eb e sapo krijuar dhe zgjidhni opsionin CSR me vet\u00eb-n\u00ebnshkrim.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/262e7a1ede8bda39a9ee098f360a38e3.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Zgjidhni periudh\u00ebn e vlefshm\u00ebris\u00eb s\u00eb certifikat\u00ebs dhe klikoni Ruaj.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/6c880218fd7874652e6540a0bde18310.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Certifikata e vet\u00eb-n\u00ebnshkruar u shfaq n\u00eb list\u00ebn e atyre n\u00eb dispozicion.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/f065f461da8f96ca31c96d3c801350ec.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p><b>Konfiguroni Profilin e Aplikacionit.<\/b><br \/>\nProfili i aplikacioneve ofron nj\u00eb kontroll m\u00eb t\u00eb plot\u00eb mbi trafikun rrjet dhe e b\u00ebn menaxhimin e tij t\u00eb thjesht\u00eb dhe efektiv. Me ndihm\u00ebn e tyre, mund t\u00eb p\u00ebrcaktoni sjelljen p\u00ebr lloje t\u00eb caktuara trafiku. <\/p>\n<ol>\n<li>Shkojm\u00eb te skeda Balancuesi i Ngarkes\u00ebs dhe aktivizojm\u00eb balancuesin. Opsioni Aktivizimi i Shpejt\u00ebsis\u00eb k\u00ebtu e lejon balancuesin t\u00eb p\u00ebrdor\u00eb balancimin m\u00eb t\u00eb shpejt\u00eb L4 n\u00eb vend t\u00eb L7.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/1ee064e2fe234fb1d96ec327f3f92f05.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Shkojm\u00eb te skeda Profil i Aplikacionit p\u00ebr t\u00eb caktuar profilin e aplikacionit. Klikoni +.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/5686a86bdff4d973f33f1a9d362ad273.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Caktoni emrin e profilit dhe zgjidhni llojin e trafikut p\u00ebr t\u00eb cilin do t\u00eb aplikohet profili. Do t\u00eb shpjegoj disa parametra.<br \/>\n<b>Ruajtje<\/b> \u2013 ruan dhe ndjek t\u00eb dh\u00ebnat e sesionit, si p\u00ebr shembull: cila server specifik nga pool-i sh\u00ebrben k\u00ebrkes\u00ebn e p\u00ebrdoruesit. Kjo siguron q\u00eb k\u00ebrkesat e p\u00ebrdoruesit d\u00ebrgohen te i nj\u00ebjti an\u00ebtar i pool-it gjat\u00eb gjith\u00eb jet\u00ebs s\u00eb sesionit ose seancave t\u00eb m\u00ebvonshme.<br \/>\n<b>Aktivizo SSL p\u00ebrmes<\/b> \u2013 kur zgjidhet kjo opsion, NSX Edge ndalon p\u00ebrfundimin e SSL. N\u00eb vend t\u00eb k\u00ebsaj, p\u00ebrfundimi ndodh direkt n\u00eb serverat p\u00ebr t\u00eb cil\u00ebt b\u00ebhet balancimi.<br \/>\n<b>Vendosni headerin HTTP X-Forwarded-For<\/b> \u2013 lejon p\u00ebrcaktimin e adres\u00ebs IP origjinale t\u00eb klientit q\u00eb lidhet me serverin web n\u00ebp\u00ebrmjet balancuesit.<br \/>\n<b>Aktivizo SSL n\u00eb an\u00ebn e Pool-it<\/b> \u2013 lejon t\u00eb specifikoni se pool-i i zgjedhur p\u00ebrb\u00ebhet nga servera HTTPS.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/81fa688f063f5cf1719461884bbb8dc2.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Duke qen\u00eb se do t\u00eb balancoj trafik HTTPS, duhet t\u00eb aktivizoj Pool Side SSL dhe t\u00eb zgjedh certifikat\u00ebn e generuar m\u00eb par\u00eb n\u00eb sked\u00ebn Virtual Server Certificates \u2014&gt; Certifikata e Sh\u00ebrbimit.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/d2585bcc33e57adc561bc5d956057479.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Po ashtu p\u00ebr Certifikatat e Pool-it \u2014&gt; Certifikata e Sh\u00ebrbimit.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/b565acf03e4eba313b4624a912310663.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p><b>Krijojm\u00eb nj\u00eb pool serverash, trafik i cil\u00ebve do t\u00eb balancohet Pools<\/b><\/p>\n<ol>\n<li>Kalojm\u00eb n\u00eb sked\u00ebn Pools. Klikoni +.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/e3fd9f747f3cbc43f3d348c05ece07fd.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Vendosni emrin e grupit, zgjidhni algoritmin (un\u00eb do t\u00eb p\u00ebrdor round robin) dhe llojin e monitorimit p\u00ebr kontrollin e sh\u00ebndetit t\u00eb backend-it. Opsioni Transparent tregon n\u00ebse IP-t\u00eb burim origjinal\u00eb t\u00eb klient\u00ebve jan\u00eb t\u00eb dukshme p\u00ebr server\u00ebt e brendsh\u00ebm.\n<ul>\n<li>N\u00ebse opsioni \u00ebsht\u00eb i \u00e7aktivizuar, trafiku p\u00ebr server\u00ebt e brendsh\u00ebm vjen me IP-n\u00eb burim t\u00eb balancuesit.\n<\/li>\n<li> N\u00ebse opsioni \u00ebsht\u00eb aktivizuar, server\u00ebt e brendsh\u00ebm shohin IP-t\u00eb burim t\u00eb klient\u00ebve. N\u00eb k\u00ebt\u00eb konfiguracion, NSX Edge duhet t\u00eb veproj\u00eb si porta e paracaktuar p\u00ebr t\u00eb garantuar q\u00eb paketat e kthyera kalojn\u00eb p\u00ebrmes NSX Edge.<\/li>\n<\/ul>\n<p>NSX mb\u00ebshtet algoritet e m\u00ebposhtme t\u00eb balancimit:<\/p>\n<ul>\n<li><b>IP_HASH<\/b> \u2013 zgjedhja e serverit bazuar n\u00eb rezultatet e funksionit hash p\u00ebr IP-n\u00eb burim dhe destinacion t\u00eb \u00e7do pakete.<\/li>\n<li> <b>LEASTCONN <\/b>\u2013 balancimi i lidhjeve t\u00eb hyra, n\u00eb var\u00ebsi t\u00eb numrit t\u00eb lidhjeve q\u00eb tashm\u00eb ekzistojn\u00eb n\u00eb serverin p\u00ebrkat\u00ebs. Lidhjet e reja do t\u00eb drejtohen n\u00eb serverin me numrin m\u00eb t\u00eb vog\u00ebl t\u00eb lidhjeve.<\/li>\n<li> <b>ROUND_ROBIN <\/b>\u2013 lidhjet e reja d\u00ebrgohen n\u00eb \u00e7do server rend pas rendi, n\u00eb p\u00ebrputhje me pesh\u00ebn e caktuar atij.<\/li>\n<li><b>URI<\/b> \u2013 pjesa e majt\u00eb e URI-s\u00eb (para pik\u00ebs s\u00eb pyetjes) \u00ebsht\u00eb hash-uara dhe e ndan\u00eb pesh\u00ebn e p\u00ebrgjithshme t\u00eb server\u00ebve n\u00eb grup. Rezultati tregon se cili server merr k\u00ebrkes\u00ebn, duke garantuar se k\u00ebrkesa gjithmon\u00eb d\u00ebrgohet n\u00eb t\u00eb nj\u00ebjtin server, derisa t\u00eb gjith\u00eb server\u00ebt t\u00eb mbeten t\u00eb disponuesh\u00ebm.<\/li>\n<li><b>HTTPHEADER <\/b>\u2013 balancimi bazohet n\u00eb nj\u00eb titull t\u00eb caktuar HTTP, i cili mund t\u00eb jepet si paramet\u00ebr. N\u00ebse titulli nuk \u00ebsht\u00eb prezent ose nuk ka ndonj\u00eb vler\u00eb, aplikohet algoritmi ROUND_ROBIN.<\/li>\n<li><b>URL <\/b>\u2013 n\u00eb \u00e7do k\u00ebrkes\u00eb HTTP GET, b\u00ebhet nj\u00eb k\u00ebrkim sipas parametrin URL q\u00eb \u00ebsht\u00eb specifikuar si argument. N\u00ebse pas parametrin ndodhet nj\u00eb barazim dhe nj\u00eb vler\u00eb, at\u00ebher\u00eb vlera \u00ebsht\u00eb hash-uar dhe ndar\u00eb n\u00eb pesh\u00ebn e p\u00ebrgjithshme t\u00eb server\u00ebve t\u00eb aktivizuar. Rezultati tregon se cili server merr k\u00ebrkes\u00ebn. Ky proces p\u00ebrdoret p\u00ebr t\u00eb ndjekur identifikuesit e p\u00ebrdoruesve n\u00eb k\u00ebrkesa dhe p\u00ebr t\u00eb siguruar q\u00eb i nj\u00ebjti user id gjithmon\u00eb d\u00ebrgohet n\u00eb t\u00eb nj\u00ebjtin server, derisa t\u00eb gjith\u00eb server\u00ebt t\u00eb mbeten t\u00eb disponuesh\u00ebm.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/ab98325a49a63d1d005839a47af39544.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>N\u00eb bllokun Members, klikoni + p\u00ebr t\u00eb shtuar server\u00ebt n\u00eb grup.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/f67e7567c48a6403bb5dcd165d150052.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nK\u00ebtu duhet t\u00eb shkruani:<\/p>\n<ul>\n<li>emrin e serverit;<\/li>\n<li>IP adres\u00ebn e serverit;<\/li>\n<li>porta p\u00ebr t\u00eb cil\u00ebn serveri do t\u00eb pranoj\u00eb trafik;<\/li>\n<li>porta p\u00ebr kontrollin e sh\u00ebndetit (Monitor healthcheck); <\/li>\n<li>pesh\u00eb (Weight) \u2013 me k\u00ebt\u00eb parametrin mund t\u00eb rregulloni sasin\u00eb proporcionale t\u00eb trafik t\u00eb pranuar p\u00ebr nj\u00eb an\u00ebtar t\u00eb caktuar t\u00eb grupit;<\/li>\n<li>Max Connections \u2013 numri maksimal i lidhjeve me serverin;<\/li>\n<li>Min Connections \u2013 numri minimal i lidhjeve q\u00eb serveri duhet t\u00eb p\u00ebrpunoj\u00eb p\u00ebrpara se trafiku t\u00eb redirektohet te an\u00ebtari tjet\u00ebr i grupit.<\/li>\n<\/ul>\n<p><img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/4bfd6de65e50cb417845d358b11b91b5.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nK\u00ebshtu duket grupi p\u00ebrfundimtar i tre server\u00ebve.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/42ebe47da99599628d9e6e75289a9f25.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p><b>Shtojm\u00eb Serverin Virtual<\/b><\/p>\n<ol>\n<li>Kalim te tabi Virtual Servers. Shtypni +.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/4d95be098f50055d81f538ebe565cfbb.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Aktivizoni serverin virtual me Enable Virtual Server.<br \/>\nI caktojm\u00eb emrin, zgjedhim Application Profile dhe Pool t\u00eb krijuar m\u00eb par\u00eb dhe tregojm\u00eb adres\u00ebn IP, n\u00eb t\u00eb cil\u00ebn Serveri Virtual do t\u00eb pranoj\u00eb k\u00ebrkesat nga jasht\u00eb. Caktojm\u00eb protokollin HTTPS dhe portin 443.<br \/>\nParametrat opcionale k\u00ebtu:<br \/>\n<b>Connection Limit <\/b>\u2013 numri maksimal i lidhjeve t\u00eb p\u00ebrkohshme q\u00eb mund t\u00eb p\u00ebrpunoj\u00eb serveri virtual;<br \/>\n<b>Connection Rate Limit (CPS)<\/b> \u2013 numri maksimal i k\u00ebrkesave t\u00eb reja q\u00eb hyjn\u00eb p\u00ebr sekond\u00eb.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/fae8dff378af917a96b9a7d887bb2bd8.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p>N\u00eb k\u00ebt\u00eb konfigurim, balancuesi p\u00ebrfundon, dhe mund t\u00eb kontrolloni funksionalitetin e tij. Serverat kan\u00eb nj\u00eb konfigurim t\u00eb thjesht\u00eb q\u00eb lejon t\u00eb kuptoni se cilit server nga grupi i p\u00ebrgjigjet k\u00ebrkesa. Gjat\u00eb konfigurimit, zgjodh\u00ebm algoritmin e balansimit Round Robin, dhe parametri Pesha p\u00ebr secilin server \u00ebsht\u00eb nj\u00eb, prandaj \u00e7do k\u00ebrkes\u00eb e ardhshme do t\u00eb trajtohet nga serveri tjet\u00ebr n\u00eb grup.<br \/>\nShkruajm\u00eb n\u00eb shfletues adres\u00ebn e jashtme t\u00eb balancuesit dhe shohim:<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/e10d1c9eb14b42f4f6fc03a0d6f03013.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPas p\u00ebrdit\u00ebsimit t\u00eb faqes, k\u00ebrkesa do t\u00eb trajtohet nga serveri tjet\u00ebr:<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/09a67549ca2f05f835a2d4645779bfa1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDhe p\u00ebrs\u00ebri - p\u00ebr t\u00eb kontrolluar serverin e tret\u00eb n\u00eb grup:<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/e0452323822ff0a3e02ff5bcee53bcdc.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nGjat\u00eb kontrollit, mund t\u00eb shihni se certifikata q\u00eb na d\u00ebrgon Edge \u00ebsht\u00eb ajo q\u00eb ne e gjeneruam n\u00eb fillim. <\/p>\n<p>Kontrolli i statusit t\u00eb balancuesit nga konsola e Edge gateway. P\u00ebr k\u00ebt\u00eb, shkruani <b>show service loadbalancer pool<\/b>. <br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/10a7421dc6278ba2c721187bfeb076a9.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Konfigurojm\u00eb Monitorin e Sh\u00ebrbimit p\u00ebr t\u00eb kontrolluar gjendjen e server\u00ebve n\u00eb grup <\/b><br \/>\nMe ndihm\u00ebn e Monitorit t\u00eb Sh\u00ebrbimit, mund t\u00eb ndjekim gjendjen e server\u00ebve n\u00eb grupin e pas\u00ebm. N\u00ebse p\u00ebrgjigja p\u00ebr k\u00ebrkes\u00ebn nuk p\u00ebrputhet me at\u00eb q\u00eb pritet, mund t\u00eb nxjerrim serverin nga grupi q\u00eb t\u00eb mos marr\u00eb k\u00ebrkesa t\u00eb reja.<br \/>\nP\u00ebr default jan\u00eb konfiguruar tre metoda verifikimi:<\/p>\n<ul>\n<li> TCP-monitor,<\/li>\n<li> Monitorimi HTTP,<\/li>\n<li> Monitorimi HTTPS.<\/li>\n<\/ul>\n<p>\nT\u00eb krijojm\u00eb nj\u00eb t\u00eb ri. <\/p>\n<ol>\n<li>Shkoni te skeda Monitorimi i Sh\u00ebrbimeve, klikoni +.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/ceac4fac8197b395d7531391534ad4ff.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Zgjidhni:\n<ul>\n<li>emrin p\u00ebr metod\u00ebn e re;<\/li>\n<li>intervali me t\u00eb cilin do t\u00eb d\u00ebrgohen k\u00ebrkesat, <\/li>\n<li>koha e pritjes p\u00ebr p\u00ebrgjigje, <\/li>\n<li>tipi i monitorimit \u2013 k\u00ebrkes\u00eb HTTPS me metod\u00ebn GET, kodi i statusit i pritur \u2013 200(OK) dhe URL e k\u00ebrkes\u00ebs.<\/li>\n<\/ul>\n<\/li>\n<li>K\u00ebtu p\u00ebrfundojm\u00eb konfigurimin e monitorit t\u00eb ri t\u00eb sh\u00ebrbimeve, tani mund ta p\u00ebrdorim at\u00eb kur krijojm\u00eb nj\u00eb grup. <br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/9db2263d6e5c90e1a5aba6cee865fd50.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p><b>Konfiguroni Rregullat e Aplikacionit<\/b><\/p>\n<p>Rregullat e Aplikacionit \u2013 nj\u00eb m\u00ebnyr\u00eb p\u00ebr t\u00eb manipuluar trafik, t\u00eb bazuar n\u00eb triger t\u00eb caktuar. Me k\u00ebt\u00eb mjet ne mund t\u00eb krijojm\u00eb rregulla t\u00eb avancuara t\u00eb balancimit t\u00eb ngarkes\u00ebs, konfigurimi i t\u00eb cilave mund t\u00eb jet\u00eb i pamundur p\u00ebrmes profileve t\u00eb aplikacionit ose me sh\u00ebrbime t\u00eb tjera t\u00eb disponueshme n\u00eb Edge Gateway.<\/p>\n<ol>\n<li>P\u00ebr t\u00eb krijuar nj\u00eb rregull kaloni te skeda Rregullat e Aplikacionit t\u00eb balancuesit.<br \/>\n <img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/b370858e444c144c95fe0d89d3ea42da.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Zgjidhni emrin, skenarin q\u00eb do t\u00eb p\u00ebrdor\u00eb rregulli, dhe klikoni Ruaj.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/e0af1a95fb5b5bba46a52e582eba62bb.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Pas krijimit t\u00eb rregullit, na nevojitet t\u00eb redaktojm\u00eb serverin virtual tashm\u00eb t\u00eb konfiguruar.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/c4617150f17e8e16cde94a9c3fb8e713.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>N\u00eb sked\u00ebn Avancuar shtojm\u00eb rregullin q\u00eb krijuam.<br \/>\n<img decoding=\"async\" alt=\"VMware NSX p\u00ebr t\u00eb vegjlit. Pjesa 5. Konfigurimi i balancuesit t\u00eb ngarkes\u00ebs\" src=\"\/wp-content\/uploads\/2019\/04\/23f4ed5bb90bf178fec825e552fba8a6.png\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p>N\u00eb shembullin e m\u00ebsip\u00ebrm kemi aktivizuar mb\u00ebshtetje p\u00ebr tlsv1.<\/p>\n<p>Disa shembuj t\u00eb tjer\u00eb:<\/p>\n<p>Rredirectimi i trafikut n\u00eb nj\u00eb grup tjet\u00ebr.<br \/>\nMe k\u00ebt\u00eb skript ne mund t\u00eb ridrejtoshim trafik n\u00eb nj\u00eb grup tjet\u00ebr balancimi n\u00ebse grupi kryesor nuk funksionon. P\u00ebr t\u00eb funksionuar rregulla, n\u00eb balancuesin duhet t\u00eb jen\u00eb konfiguruar disa grupe dhe t\u00eb gjith\u00eb an\u00ebtar\u00ebt e grupit kryesor duhet t\u00eb jen\u00eb n\u00eb gjendje down. Duhet t\u00eb tregoni sakt\u00ebsisht emrin e grupit, jo ID-n\u00eb e tij.<\/p>\n<p><code>acl pool_down nbsrv(PRIMARY_POOL_NAME) eq 0<br \/>\nuse_backend SECONDARY_POOL_NAME if PRIMARY_POOL_NAME<br \/>\n<\/code><\/p>\n<p>Ridrejtimi i trafikut n\u00eb nj\u00eb burim t\u00eb jasht\u00ebm.<br \/>\nK\u00ebtu ne ridrejtoshim trafik n\u00eb nj\u00eb sit t\u00eb jasht\u00ebm, n\u00ebse t\u00eb gjith\u00eb pjes\u00ebtar\u00ebt e grupit kryesor jan\u00eb n\u00eb gjendje down.<\/p>\n<p><code>acl pool_down nbsrv(NUMRI_I_PULLES) eq 0<br \/>\nredirigj vendndodhjen http:\/\/www.example.com nese pool_down<\/code><\/p>\n<p>M\u00eb shum\u00eb shembuj <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.vmware.com\/en\/VMware-NSX-Data-Center-for-vSphere\/6.3\/com.vmware.nsx.admin.doc\/GUID-A5779D43-AC0F-4407-AF4A-0C1622394452.html\">k\u00ebtu<\/a><\/noindex>.<\/p>\n<p>Kjo \u00ebsht\u00eb p\u00ebr balancuesin nga ana ime. N\u00ebse keni pyetje, mos hezitoni t\u00eb pyesni, un\u00eb jam n\u00eb dispozicion p\u00ebr t'u p\u00ebrgjigjur.<br \/>\n<br \/>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/448540\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0427\u0430\u0441\u0442\u044c \u043f\u0435\u0440\u0432\u0430\u044f. \u0412\u0432\u043e\u0434\u043d\u0430\u044f \u0427\u0430\u0441\u0442\u044c \u0432\u0442\u043e\u0440\u0430\u044f. \u041d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u043f\u0440\u0430\u0432\u0438\u043b Firewall \u0438 NAT \u0427\u0430\u0441\u0442\u044c \u0442\u0440\u0435\u0442\u044c\u044f. \u041d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 DHCP \u0427\u0430\u0441\u0442\u044c \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u0430\u044f. \u041d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0446\u0438\u0438 \u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0439 \u0440\u0430\u0437 \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u0438 \u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044f\u0445 NSX Edge \u0432 \u0440\u0430\u0437\u0440\u0435\u0437\u0435 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0438 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0446\u0438\u0438, \u0430 \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u0431\u0443\u0434\u0435\u043c \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u044c\u0441\u044f \u0441 \u0431\u0430\u043b\u0430\u043d\u0441\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u043e\u043c. \u041f\u0440\u0435\u0436\u0434\u0435 \u0447\u0435\u043c \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u0442\u044c \u043a 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