{"id":8119,"date":"2016-04-28T12:15:11","date_gmt":"2016-04-28T10:15:11","guid":{"rendered":"https:\/\/www.websupport.sk\/blog\/?p=8119"},"modified":"2025-03-11T21:06:46","modified_gmt":"2025-03-11T20:06:46","slug":"5-noviniek-ktore-zlepsuju-dostupnost-sluzieb","status":"publish","type":"post","link":"https:\/\/www.websupport.sk\/blog\/2016\/04\/5-noviniek-ktore-zlepsuju-dostupnost-sluzieb\/","title":{"rendered":"5 noviniek, ktor\u00e9 zlep\u0161uj\u00fa dostupnos\u0165 slu\u017eieb"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\"><b>Doba \u010d\u00edtania:<\/b><\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span><p>S\u013e\u00fabili sme v\u00e1m, \u017ee v\u00e1s budeme pravidelne informova\u0165 o jednotliv\u00fdch krokoch, ktor\u00e9 ved\u00fa k zlep\u0161ovaniu kvality slu\u017eieb. Dnes v\u00e1m prin\u00e1\u0161ame \u010fal\u0161\u00ed blogpost o tom, ako pokra\u010duj\u00fa pr\u00e1ce na zlep\u0161ovan\u00ed dostupnosti hostingov\u00fdch slu\u017eieb.<\/p>\n<h2>1. Nov\u00fd dizajn siete<\/h2>\n<p>Prvou d\u00f4le\u017eitou zmenou bola zmena topol\u00f3gie internej siete. Do janu\u00e1ra fungovala na\u0161a sie\u0165 na dizajne, ktor\u00fd vznikol v \u010dase, ke\u010f mal WebSupport len nieko\u013eko desiatok serverov. Rozhodli sme sa s na\u0161\u00edm partnerom prerobi\u0165 sie\u0165 tak, aby bola prisp\u00f4soben\u00e1 na n\u00e1rast d\u00e1tov\u00fdch prenosov a bola v\u00fdrazne odolnej\u0161ia vo\u010di pr\u00edpadn\u00fdm probl\u00e9mom.<\/p>\n<p>P\u00f4vodn\u00fd stav spo\u010d\u00edval v tom, \u017ee na\u0161a sie\u0165 bola zapojen\u00e1 z jednotliv\u00fdch switchov, ktor\u00e9 medzi sebou boli prepojen\u00e9 iba d\u00e1tov\u00fdmi linkami a vytv\u00e1rali tak viacero kruhov. Pri zmene v sieti sa prer\u00e1taval pomocou mSTP, (multiple spanning tree protocol) \u010do pri takmer 400 fyzick\u00fdch zariadeniach v sieti u\u017e z\u010faleka nie je ide\u00e1lne.<\/p>\n<p>Po\u010das prer\u00e1bky siete sme v\u0161etky &#8222;toprack switche&#8220; zapojili do stacku a hlavn\u00e9 switche sme prepojili pomocou VSS. T\u00fdm sa odstr\u00e1nili kruhy zo siete, zv\u00fd\u0161ila sa odolnos\u0165 vo\u010di v\u00fdpadku jednotliv\u00fdch switchov a umo\u017enilo n\u00e1m to vyu\u017e\u00edva\u0165 active-active zapojenie serverov (LACP).<\/p>\n<p>Najv\u00e4\u010d\u0161ou novinkou bolo <strong>zak\u00fapenie \u0161tyroch switchov Dell S4840<\/strong>, \u010do s\u00fa 48x 10GE a 6x 40GE open networking switche. Tie n\u00e1m umo\u017enuj\u00fa v hlavnom d\u00e1tovom centre postupne rozdeli\u0165 funkciu core a agrega\u010dn\u00fdch switchov na 2 vrstvy a v\u00fdrazne zr\u00fdchli\u0165 d\u00e1tov\u00e9 prenosy v r\u00e1mci internej siete. V sekund\u00e1rnom d\u00e1tovom centre sl\u00fa\u017eia nov\u00e9 Dell switche ako hlavn\u00e9 switche pre prepojenie dvoch d\u00e1tov\u00fdch centier a rackov. Hlavn\u00fdm d\u00f4vodom pre v\u00fdber t\u00fdchto switchov bola mo\u017enost neskor\u0161ej v\u00fdmeny syst\u00e9mu za opensource &#8211; open networking syst\u00e9m, a t\u00fdm ich plne integrova\u0165 do OpenStacku.<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"cs\"><p>&#8222;Put your switch on st\u00f4l!&#8220; 4 kusy nov\u00fdch Dell S4840-ON (6x40gbit\/s a 48x10gbit\/s porty) s\u00fa nachystan\u00e9 \ud83d\ude42 <a href=\"https:\/\/twitter.com\/hashtag\/hwporn?src=hash\">#hwporn<\/a> <a href=\"https:\/\/t.co\/XzJEBkagAu\">pic.twitter.com\/XzJEBkagAu<\/a><\/p>\n<p>\u2014 WebSupport.sk (@websupport_sk) <a href=\"https:\/\/twitter.com\/websupport_sk\/status\/691902129116692487\">26. ledna 2016<\/a><\/p><\/blockquote>\n<p><script src=\"\/\/platform.twitter.com\/widgets.js\" async=\"\" charset=\"utf-8\"><\/script><br \/>\n Postupne e\u0161te nahr\u00e1dzame star\u0161ie Cisco switche za nov\u00e9 Dell top rack switche a prid\u00e1vame mana\u017ement switchov a to tak, aby v\u0161etky racky mali jednotn\u00fd dizajn &#8211; 2 top rack switche v stacku s 10GE uplinkom a jedn\u00fdm mana\u017ement switchom.<\/p>\n<h2>2. Nov\u00e1 intern\u00e1 infra\u0161trukt\u00fara<\/h2>\n<p>\u010eal\u0161ou novinkou bolo uvedenie na\u0161ej novej internej infra\u0161trukt\u00fary do prev\u00e1dzky. Cie\u013eom bolo vytvori\u0165 nez\u00e1visl\u00fa platformu pre prev\u00e1dzku intern\u00fdch n\u00e1strojov, datab\u00e1z a podporn\u00fdch slu\u017eieb. Dnes z nej napr\u00edklad u\u017e be\u017e\u00ed hlavn\u00e1 WebSupport datab\u00e1za, v\u010faka ktorej m\u00f4\u017eete jednoducho spravova\u0165 svoje slu\u017eby cez <a href=\"https:\/\/admin.websupport.sk\/sk\/site\/login\" target=\"_blank\">WebAdmin<\/a>.<\/p>\n<p>Platforma je hardv\u00e9rovo postaven\u00e1 na Dell FX2 FC630 serveroch, ka\u017ed\u00fd s 6x 400GB SSD, 256 GB RAM a 2x 10 jadrov\u00fdmi CPU. Servery s\u00fa medzi sebou prepojen\u00e9 internou 2x 10GE sie\u0165ou a rovnako s\u00fa tak pripojen\u00e9 aj do ostatnej infra\u0161tukt\u00fary. Na ukladanie d\u00e1t slu\u017e\u00ed distribuovan\u00fd s\u00faborov\u00fd syst\u00e9m GlusterFS, nad ktor\u00fdm be\u017eia virtu\u00e1lne servery spravovan\u00e9 OpenStackom.<\/p>\n<p>\u010ea\u013e\u0161\u00edm krokom s prechodom na nov\u00fd admin a nov\u00fa intern\u00fa infra\u0161trukt\u00faru bude pres\u0165ahovanie slu\u017eieb pod Docker a mana\u017ement kubernetis, \u010d\u00edm zabezpe\u010d\u00edme ich vysok\u00fa dostupnos\u0165 a jednoduch\u00e9 nasadzovanie nov\u00fdch verzi\u00ed od na\u0161ich v\u00fdvoj\u00e1rov.<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"cs\">\n<p lang=\"und\" dir=\"ltr\">\u010eakujeme, \u017ee sledujete n\u00e1\u0161 nov\u00fd technologick\u00fd kan\u00e1l <a href=\"https:\/\/twitter.com\/websupport_tech\">@websupport_tech<\/a><\/p>\n<p>&mdash; WebSupport Tech (@websupport_tech) <a href=\"https:\/\/twitter.com\/websupport_tech\/status\/727059318235914240\">2. kv\u011btna 2016<\/a><\/p><\/blockquote>\n<p><script async src=\"\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2>3. Viac miesta pre z\u00e1lohy<\/h2>\n<p>Ke\u010f\u017ee miesta pre z\u00e1lohy nie je nikdy dos\u0165, v posledn\u00fdch mesiacoch sa na\u0161e miesto rozr\u00e1stlo o dva servery <strong>so sum\u00e1rnou pou\u017eite\u013enou kapacitou 195 TB<\/strong>. Servery s\u00fa na platforme Supermicro X10 s 36x 3TB, s diskami zapojen\u00fdmi po 6-ticiach v RAIDz2 (obdoba RAID6). T\u00fdm je vytvoren\u00e9 dostato\u010dne redundatn\u00e9, ale aj r\u00fdchle \u00falo\u017eisko pre z\u00e1lohy. Ako s\u00faborov\u00fd syst\u00e9m pou\u017e\u00edvame overen\u00fd ZFS, ktor\u00fd n\u00e1m umo\u017enuje jednoducho pren\u00e1\u0161a\u0165 snapshoty medzi produk\u010dn\u00fdmi servermi a backupmi a zv\u00e4\u010d\u0161ova\u0165 \u00falo\u017en\u00fd priestor pomocou vstavanej kompresie.<\/p>\n<p>Okrem nov\u00fdch backup serverov sme prerobili pripojenie v\u0161etk\u00fdch, u\u017e existuj\u00facich backup serverov na spom\u00ednan\u00e9 active-active 2x10GE pripojenie. V\u010faka tomu vieme d\u00e1ta nielen r\u00fdchlo z\u00e1lohova\u0165, ale aj r\u00fdchlo obnovi\u0165 v pr\u00edpade potreby.<\/p>\n<h2>4. Nov\u00e9 rie\u0161enie mailov\u00fdch serverov<\/h2>\n<p>Na\u0161e star\u00e9 diskov\u00e9 pole NetApp dlhodobo nie je schopn\u00e9 poskytova\u0165 potrebn\u00fd v\u00fdkon na r\u00fdchle na\u010d\u00edtanie e-mailov. Rozhodli sme sa e-maily pres\u00fava\u0165 na nov\u00e9 rie\u0161enie. Nov\u00e9 rie\u0161enie je postaven\u00e9 na samostatn\u00fdch serveroch, ktor\u00e9 s\u00fa postaven\u00e9 na mixe HDD a SSD, kde SSD sl\u00fa\u017eia ako cache. Rozhodli sme sa pre konfigur\u00e1ciu, ktor\u00e1 obsahuje 256 GB RAM, 2x200GB SSD a 8x1TB HDD v RAIDz2 (obdoba RAID6) v podobe 1U serverov. Ako u\u017e n\u00e1zov pou\u017eit\u00e9ho raidu vypoved\u00e1, znova sme nasadali s\u00faborov\u00fd syst\u00e9m ZFS. T\u00fdm je zabezpe\u010den\u00e1 bezpe\u010dnos\u0165 d\u00e1t, ale hlavne ve\u013emi r\u00fdchle odozvy, nako\u013eko iba minimum dotazov ide z rota\u010dn\u00fdch diskov a viac ako 98% po\u017eiadaviek ide z RAM.<\/p>\n<p>Servery s\u00fa pripojen\u00e9 2&#215;10 GE v active-active m\u00f3de, \u010do n\u00e1m umo\u017enuje ich pravideln\u00e9 z\u00e1lohovanie vo ve\u013emi kr\u00e1tkych intervaloch pre pr\u00edpad fat\u00e1lnej poruchy servera.<\/p>\n<p><strong>Postupne na tak\u00e9to e-mail servery migrujeme v\u0161etky e-mailov\u00e9 kont\u00e1.<\/strong><\/p>\n<h2>5. Nov\u00e9 verzie MySQL a MariaDB<\/h2>\n<p>Ku koncu roka sme premigrovali v\u0161etky datab\u00e1zy na samostatn\u00e9 SSD servery do kontajnerov, spravovan\u00e9 OpenStackom. V\u010faka tomu sa v\u00fdrazne zlep\u0161ila odozva datab\u00e1zov\u00fdch serverov a n\u00e1m umo\u017enila ich jednoduch\u00fd mana\u017ement.<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"cs\"><p>\nJuch. Toto s\u00fa 4 nov\u00e9 servery a ich miery s\u00fa: 10x200gb SSD + 2&#215;6 jadro CPU a 128gb RAM <a href=\"https:\/\/twitter.com\/hashtag\/hwporn?src=hash\">#hwporn<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/websupport?src=hash\">#websupport<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/hw?src=hash\">#hw<\/a> <a href=\"https:\/\/t.co\/ztfsOTKrKr\">pic.twitter.com\/ztfsOTKrKr<\/a><\/p>\n<p>\u2014 WebSupport Tech (@websupport_tech) <a href=\"https:\/\/twitter.com\/websupport_tech\/status\/700331134706716672\">18. \u00fanora 2016<\/a>\n<\/p><\/blockquote>\n<p><script src=\"\/\/platform.twitter.com\/widgets.js\" async=\"\" charset=\"utf-8\"><\/script><\/p>\n<p>Vo febru\u00e1ri sme pridali u\u017e dlho o\u010dak\u00e1van\u00e9 <strong>nov\u00e9 verzie a to MySQL 5.7 a MariaDB 10.1<\/strong>, dostupn\u00e9 na klik cez <a href=\"https:\/\/admin.websupport.sk\/sk\/site\/login\" target=\"_blank\">WebAdmin<\/a>. V kombin\u00e1ci\u00ed s najnov\u0161\u00edm PHP 7 umo\u017enuj\u00fa <strong>ve\u013emi r\u00fdchlu prev\u00e1dzku webov\u00fdch aplik\u00e1ci\u00ed.<\/strong> Treba ma\u0165 v\u0161ak na pam\u00e4ti, \u017ee nov\u00e9 verzie so sebou prin\u00e1\u0161aj\u00fa aj zmeny, preto si treba overi\u0165 funk\u010dnos\u0165 konkr\u00e9tneho CMS pred nasaden\u00edm do ostrej prev\u00e1dzky.<\/p>\n<p class=\"p1\"><span class=\"s1\">[mc4wp_form]<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u013e\u00fabili sme v\u00e1m, \u017ee v\u00e1s budeme pravidelne informova\u0165 o jednotliv\u00fdch krokoch, ktor\u00e9 ved\u00fa k zlep\u0161ovaniu kvality slu\u017eieb. Dnes v\u00e1m prin\u00e1\u0161ame \u010fal\u0161\u00ed blogpost o tom, ako pokra\u010duj\u00fa pr\u00e1ce na zlep\u0161ovan\u00ed dostupnosti hostingov\u00fdch slu\u017eieb. 1. Nov\u00fd dizajn siete Prvou d\u00f4le\u017eitou zmenou bola zmena topol\u00f3gie internej siete. Do janu\u00e1ra fungovala na\u0161a sie\u0165 na dizajne, ktor\u00fd vznikol v \u010dase, [&hellip;]<\/p>\n","protected":false},"author":119,"featured_media":8120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,11],"tags":[581,860,889,890,956],"class_list":["post-8119","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologie","category-zakulisie","tag-novinky-2","tag-tomas-srnka","tag-update","tag-upgrade","tag-websupport"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>5 noviniek, ktor\u00e9 zlep\u0161uj\u00fa dostupnos\u0165 slu\u017eieb - Websupport blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.websupport.sk\/blog\/2016\/04\/5-noviniek-ktore-zlepsuju-dostupnost-sluzieb\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5 noviniek, ktor\u00e9 zlep\u0161uj\u00fa dostupnos\u0165 slu\u017eieb - Websupport blog\" \/>\n<meta property=\"og:description\" content=\"S\u013e\u00fabili sme v\u00e1m, \u017ee v\u00e1s budeme pravidelne informova\u0165 o jednotliv\u00fdch krokoch, ktor\u00e9 ved\u00fa k zlep\u0161ovaniu kvality slu\u017eieb. 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