{"id":95981,"date":"2020-10-06T01:43:06","date_gmt":"2020-10-05T23:43:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/opyt-smeny-sap-hostinga-kak-migrirovat-sistemy-chtoby-ne-bylo-muchitelno-bolno"},"modified":"2020-10-06T01:43:06","modified_gmt":"2020-10-05T23:43:06","slug":"opyt-smeny-sap-hostinga-kak-migrirovat-sistemy-chtoby-ne-bylo-muchitelno-bolno","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/opyt-smeny-sap-hostinga-kak-migrirovat-sistemy-chtoby-ne-bylo-muchitelno-bolno","title":{"rendered":"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/573a399cc8d2c0e30cd97478bfcfcbca.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAlebo je to mo\u017en\u00e9? Samozrejme, migr\u00e1cia SAP syst\u00e9mov je zlo\u017eit\u00fd a zd\u013ahav\u00fd proces, ktor\u00e9ho \u00faspech z\u00e1vis\u00ed od koordinovanej pr\u00e1ce v\u0161etk\u00fdch z\u00fa\u010dastnen\u00fdch. Ak je migr\u00e1cia vykonan\u00e1 v stiesnen\u00fdch term\u00ednoch, \u00faloha sa st\u00e1va mnohon\u00e1sobne zlo\u017eitej\u0161ou. Nie ka\u017ed\u00fd sa na to odv\u00e1\u017ei. D\u00f4vodov m\u00f4\u017ee by\u0165 nieko\u013eko. Napr\u00edklad, proces je s\u00e1m o sebe dlhodob\u00fd a organiza\u010dne n\u00e1ro\u010dn\u00fd. Plus existuje riziko nepl\u00e1novan\u00fdch v\u00fdpadkov syst\u00e9mov. Alebo klienti nie s\u00fa presved\u010den\u00ed, \u017ee po pre\u017eit\u00ed takej oper\u00e1cie z\u00edskaj\u00fa v\u00fdhody, ktor\u00e9 s\u00fa \u00famern\u00e9 vynalo\u017een\u00fdm \u00fasiliam. Av\u0161ak existuj\u00fa aj v\u00fdnimky. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nPodrobne sa pozrieme na \u0165a\u017ekosti, s ktor\u00fdmi sa z\u00e1kazn\u00edci stret\u00e1vaj\u00fa po\u010das migr\u00e1cie a podpory SAP syst\u00e9mov, prediskutujeme, pre\u010do stereotypy nie v\u017edy zodpovedaj\u00fa realite, a podel\u00edme sa o pr\u00edpad, ako sa n\u00e1m podarilo migrova\u0165 syst\u00e9my z\u00e1kazn\u00edka na nov\u00fa infra\u0161trukt\u00faru za nie\u010do viac ako tri mesiace. <\/p>\n<h3>Hosting SAP syst\u00e9mov<\/h3>\n<p>\nE\u0161te pred piatimi rokmi bolo \u0165a\u017ek\u00e9 si predstavi\u0165, \u017ee klienti za\u010dn\u00fa masovo vyu\u017e\u00edva\u0165 hostingov\u00e9 zdroje pre SAP aplik\u00e1cie. Vo v\u00e4\u010d\u0161ine pr\u00edpadov ich implementovali on-premise. Av\u0161ak s rozvojom modelov outsourcingu a trhu cloudov\u00fdch slu\u017eieb sa n\u00e1zor z\u00e1kazn\u00edkov za\u010dal meni\u0165. Ak\u00e9 s\u00fa argumenty, ktor\u00e9 ovplyv\u0148uj\u00fa v\u00fdber cloudov\u00e9ho rie\u0161enia pre SAP?<\/p>\n<ul>\n<li>Pre nov\u00e1\u010dikov, ktor\u00ed pr\u00e1ve pl\u00e1nuj\u00fa implement\u00e1ciu SAP, je cloudov\u00e1 infra\u0161trukt\u00fara prakticky \u0161tandardnou vo\u013ebou \u2013 \u0161k\u00e1lovate\u013enos\u0165 zdrojov pod\u013ea aktu\u00e1lnych potrieb syst\u00e9mu a nechcenie odkl\u00e1\u0148a\u0165 zdroje na rozvoj nepodporn\u00fdch kompetenci\u00ed.<\/li>\n<li>V spolo\u010dnostiach s rozsiahlym syst\u00e9mov\u00fdm prostred\u00edm dosahuj\u00fa CIO pomocou hostingu SAP syst\u00e9mov kvalitne nov\u00fd \u00farove\u0148 riadenia riz\u00edk, preto\u017ee za SLA zodpoved\u00e1 partner.<\/li>\n<li>Tret\u00edm z naj\u010dastej\u0161ie uv\u00e1dzan\u00fdch argumentov je vysok\u00e1 cena vybudovania infra\u0161trukt\u00fary na realiz\u00e1ciu scen\u00e1rov vysok\u00e9ho dostupnosti a DR.<\/li>\n<li>Faktor 2027 \u2013 ozn\u00e1men\u00e9 dod\u00e1vate\u013eom ukon\u010denie podpory zastaran\u00fdch syst\u00e9mov v roku 2027. To znamen\u00e1 prevod datab\u00e1zy na HANA, \u010do so sebou prin\u00e1\u0161a n\u00e1klady na moderniz\u00e1ciu a n\u00e1kup nov\u00fdch v\u00fdpo\u010dtov\u00fdch kapac\u00edt.<\/li>\n<\/ul>\n<p>\nTrh SAP hos\u0165ovania na Slovensku mo\u017eno pova\u017eova\u0165 za dos\u0165 zrel\u00fd. To poskytuje \u0161irok\u00e9 mo\u017enosti pre klientov, ktor\u00ed chc\u00fa zmeni\u0165 svoje hostingov\u00e9 platformy. Tak\u00e9to projekty v\u0161ak opr\u00e1vnene m\u00f4\u017eu vyvol\u00e1va\u0165 obavy u podnikov kv\u00f4li zlo\u017eitosti migra\u010dn\u00e9ho procesu. To n\u00fati z\u00e1kazn\u00edkov kl\u00e1s\u0165 vy\u0161\u0161ie po\u017eiadavky na poskytovate\u013eov slu\u017eieb, ktor\u00ed by mali ma\u0165 nielen v\u00fdnimo\u010dn\u00e9 kompetencie v oblasti hostingu a spr\u00e1vy syst\u00e9mov SAP, ale aj \u00faspe\u0161n\u00e9 sk\u00fasenosti v oblasti migr\u00e1cie. <\/p>\n<h3>V \u010dom spo\u010d\u00edvaj\u00fa \u0165a\u017ekosti pri zmene SAP hos\u0165ovania? <\/h3>\n<p>\nExistuj\u00fa r\u00f4zne oblasti hostingu. Nes\u00falad s deklarovanou \u00farov\u0148ou slu\u017eieb, mno\u017estvo \u201eale\u201c a hviezdi\u010diek s drobn\u00fdm p\u00edsmom, obmedzen\u00e9 zdroje a mo\u017enosti <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/\"   title=\"hostingov\u00e9ho poskytovate\u013ea\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1214\">hostingov\u00e9ho poskytovate\u013ea<\/a>, nedostatok flexibility v ot\u00e1zkach komunik\u00e1cie so z\u00e1kazn\u00edkom, byrokracia, technick\u00e9 obmedzenia, n\u00edzka kvalifik\u00e1cia odborn\u00edkov technickej podpory, ako aj mnoh\u00e9 \u010fal\u0161ie nuansy \u2014 to je len mal\u00e1 \u010das\u0165 skryt\u00fdch n\u00e1strah, s ktor\u00fdmi sa m\u00f4\u017eu klienti stretn\u00fa\u0165 pri prev\u00e1dzkovan\u00ed svojich obchodn\u00fdch syst\u00e9mov v outsourcingov\u00fdch infra\u0161trukt\u00farach. \u010casto zost\u00e1va v\u0161etko toto v pozad\u00ed, v h\u013abkach obsiahlej zmluvy, a vypl\u00e1va na povrch a\u017e po\u010das vyu\u017e\u00edvania slu\u017eieb. <\/p>\n<p>V istom momente sa z\u00e1kazn\u00edkovi st\u00e1va jasn\u00fdm, \u017ee \u00farove\u0148 slu\u017eieb, ktor\u00fa dost\u00e1va, je vzdialen\u00e1 od jeho o\u010dak\u00e1van\u00ed. Toto je ak\u00fdmsi katalyz\u00e1torom k h\u013eadaniu rie\u0161en\u00ed na n\u00e1pravu situ\u00e1cie a v pr\u00edpade ne\u00faspechu, ke\u010f sa probl\u00e9my nahromadia do extr\u00e9mu a bol\u00ed to, prech\u00e1dzaj\u00fa k akt\u00edvnym krokom pri h\u013eadan\u00ed alternat\u00edvnych mo\u017enost\u00ed v smere zmeny poskytovate\u013ea slu\u017eby.<\/p>\n<p>Pre\u010do sa \u010dak\u00e1 na posledn\u00fa chv\u00ed\u013eu? D\u00f4vod je prost\u00fd \u2014 proces presunu syst\u00e9mov nie je pre klientov v\u017edy priesvitn\u00fd a zrozumite\u013en\u00fd. Klientovi sa \u0165a\u017eko posudzuje skuto\u010dn\u00e9 riziko spojen\u00e9 s migra\u010dn\u00fdm procesom. Dalo by sa poveda\u0165, \u017ee migr\u00e1cia pre klientov je ak\u00fdmsi \u010diernym boxom: nie je jasn\u00e9, ak\u00e9 s\u00fa n\u00e1klady, doba v\u00fdpadku syst\u00e9mov, rizik\u00e1 a ako ich minimalizova\u0165, a vlastne je to cel\u00e9 temn\u00e9 a desiv\u00e9. Ve\u010f ak sa to nepodar\u00ed, hlavy padn\u00fa u top mana\u017e\u00e9rov aj vykon\u00e1vate\u013eov.<\/p>\n<p>SAP \u2014 to s\u00fa syst\u00e9my podnikovej \u00farovne, komplexn\u00e9 a, jemne povedan\u00e9, nie lacn\u00e9. Na ich nasadenie, \u00fapravy a \u00fadr\u017ebu s\u00fa vynakladan\u00e9 zna\u010dn\u00e9 rozpo\u010dty a od ich dostupnosti a spr\u00e1vneho fungovania z\u00e1vis\u00ed \u017eivotaschopnos\u0165 podniku. A teraz si predstavte d\u00f4sledky zastavenia niektorej ve\u013ekej v\u00fdroby. To s\u00fa finan\u010dn\u00e9 straty, ktor\u00e9 m\u00f4\u017eu by\u0165 vy\u010d\u00edslen\u00e9 na sumy s ve\u013ek\u00fdm po\u010dtom n\u00fal, ako aj reputa\u010dn\u00e9 a in\u00e9, rovnako d\u00f4le\u017eit\u00e9 rizik\u00e1. <\/p>\n<p>Rozoberieme komplik\u00e1cie, ktor\u00e9 m\u00f4\u017eu nastat' v ka\u017edej f\u00e1ze na pr\u00edpade migr\u00e1cie SAP syst\u00e9mov jedn\u00e9ho z na\u0161ich z\u00e1kazn\u00edkov. <\/p>\n<h3>Pr\u00edprava a projektovanie<\/h3>\n<p>\nMigr\u00e1cia je formulou s mnoh\u00fdmi r\u00f4znymi zlo\u017ekami. A jednou z najd\u00f4le\u017eitej\u0161\u00edch je f\u00e1za projektovania a pr\u00edpravy cie\u013eovej (novej) infra\u0161trukt\u00fary. <\/p>\n<p>Museli sme sa ponori\u0165 do existuj\u00facej realiz\u00e1cie syst\u00e9mov, ich architekt\u00fary. V cie\u013eovej infra\u0161trukt\u00fare sme niekde zopakovali existuj\u00face rie\u0161enia, v niektor\u00fdch aspektoch doplnili a vylep\u0161ili, niekde prerobili, premysleli a vybrali rie\u0161enia pre zabezpe\u010denie odolnosti a dostupnosti, a z\u00e1rove\u0148 maxim\u00e1lne skonsolidovali v\u0161etky zdroje.<\/p>\n<p>V priebehu projektovania bolo vykonan\u00fdch mnoho r\u00f4znych cvi\u010den\u00ed, ktor\u00e9 nakoniec umo\u017enili maxim\u00e1lne sa pripravi\u0165 na migr\u00e1ciu a zoh\u013eadni\u0165 v\u0161etky mo\u017en\u00e9 nuansy a n\u00e1strahy (o nich nesk\u00f4r).<\/p>\n<p>\u010co sa n\u00e1m nakoniec podarilo \u2014 individu\u00e1lne navrhnut\u00e1 infra\u0161trukt\u00fara s\u00fakromn\u00e9ho cloudu na b\u00e1ze n\u00e1\u0161ho d\u00e1tov\u00e9ho centra:<\/p>\n<ul>\n<li>vyhraden\u00e9 fyzick\u00e9 servery pre SAP HANA; <\/li>\n<li>platforma virtualiz\u00e1cie VMware pre aplika\u010dn\u00e9 servery a infra\u0161trukt\u00farne slu\u017eby;<\/li>\n<li>duplicovan\u00e9 komunika\u010dn\u00e9 kan\u00e1ly medzi d\u00e1tov\u00fdmi centrami pre L2 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"135\">VPN<\/a>;<\/li>\n<li>dve hlavn\u00e9 \u00falo\u017eisk\u00e1 pre oddelenie produktivity a \"v\u0161etk\u00e9ho ostatn\u00e9ho\";<\/li>\n<li>Z\u00e1lohovac\u00ed syst\u00e9m na b\u00e1ze Veritas Netbackup s oddelen\u00fdm serverom, diskov\u00fdm boxom a p\u00e1skovou kni\u017enicou.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/737d05a99e17a99fe67b8fc196f40c1e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA tu je, ako sme to v\u0161etko realizovali z technick\u00e9ho h\u013eadiska. <\/p>\n<h3>SAP<\/h3>\n<p><\/p>\n<ul>\n<li>Pre efekt\u00edvne vyu\u017eitie \u00falo\u017e\u00edsk pre produkt\u00edvne HANA sme pou\u017eili zdie\u013ean\u00e9 disky bez syst\u00e9movej replik\u00e1cie DB prostriedkami SAP. Toto v\u0161etko sme zabalili do klastra Active-Standby SUSE HAE na b\u00e1ze Pacemaker. \u00c1no, \u010das obnovy je trochu dlh\u0161\u00ed ako s replik\u00e1ciou, ale z\u00edskavame \u00fasporu miesta \u00falo\u017eiska dvakr\u00e1t a t\u00fdm p\u00e1dom \u00fasporu rozpo\u010dtu z\u00e1kazn\u00edka. <\/li>\n<li>V prepodra\u017eovac\u00edch prostrediach sa od klastrov HANA upustilo, ale technicky bola zopakovan\u00e1 konfigur\u00e1cia produkcie. <\/li>\n<li>Testovacie prostredia a prostredia pre v\u00fdvoj boli rozdelen\u00e9 na nieko\u013eko serverov bez klastrov v konfigur\u00e1cii MCOS.<\/li>\n<li>V\u0161etky aplika\u010dn\u00e9 servery boli virtualizovan\u00e9 a umiestnen\u00e9 do VMware.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Siete<\/h3>\n<p><\/p>\n<ul>\n<li>Fyzicky sme oddelili obvody spr\u00e1vy siet\u00ed a produkt\u00edvnych siet\u00ed pomocou prep\u00edna\u010dov, pri\u010dom produkt\u00edvne sme nasmerovali smerom k datov\u00e9mu centru z\u00e1kazn\u00edka.<\/li>\n<li>Zabezpe\u010dili sme dostato\u010dn\u00fd po\u010det sie\u0165ov\u00fdch rozhran\u00ed, aby sme nemie\u0161ali ve\u013ek\u00e9 objemy prev\u00e1dzky.<\/li>\n<li>Na prenos d\u00e1t z \u00falo\u017eiska sme urobili klasick\u00e9 FC SAN fabriky.<\/li>\n<\/ul>\n<p><\/p>\n<h3>S\u00daS<\/h3>\n<p><\/p>\n<ul>\n<li>Produkt\u00edvne a prepodru\u017en\u00e9 za\u0165a\u017eenie SAP zostalo na all-flash poli.<\/li>\n<li>Testovacie prostredia v\u00fdvoj\u00e1rov a infra\u0161trukt\u00farne slu\u017eby boli umiestnen\u00e9 na samostatnom hybridnom poli.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Z\u00e1lohovan\u00e1 slu\u017eba<\/h3>\n<p><\/p>\n<ul>\n<li>Vybudovali sme ju na b\u00e1ze Veritas Netbackup.<\/li>\n<li>Trochu sme doplnili vstavan\u00e9 skripty, aby sme z\u00e1lohovali konfigur\u00e1cie MCOS.<\/li>\n<li>Aktu\u00e1lne k\u00f3pie sme ulo\u017eili na diskov\u00fd reg\u00e1l, aby sme sa r\u00fdchlo mohli obnovi\u0165, a na dlhodob\u00e9 uchov\u00e1vanie pou\u017e\u00edvame p\u00e1sky. <\/li>\n<\/ul>\n<p><\/p>\n<h3>Monitorovanie<\/h3>\n<p><\/p>\n<ul>\n<li>V\u0161etok hardv\u00e9r, OS a SAP sme zaznamenali do Zabbix. <\/li>\n<li>Zostavili sme mno\u017estvo u\u017eito\u010dn\u00fdch dashboardov v Grafana. <\/li>\n<li>Pri v\u00fdskyte alertu Zabbix vie otvori\u0165 po\u017eiadavku v syst\u00e9me spr\u00e1vy incidentov, ktor\u00fd m\u00e1me realizovan\u00fd na Jira. Inform\u00e1cie s\u00fa tie\u017e duplikovan\u00e9 do kan\u00e1la Telegram.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Telegram<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/1dd829950ceadcb2541dc96912850e67.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Celkov\u00fd stav HANA <\/h3>\n<p>\n<img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/754b658441da1903a179f4b62041af45.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Stav aplika\u010dn\u00e9ho servera SAP:<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/bc9ff5a68fd285e477a1c3978275c086.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Infra\u0161t\u00farne slu\u017eby<\/h3>\n<p><\/p>\n<ul>\n<li>Na obsluhu intern\u00fdch priestorov n\u00e1zvov sme postavili cluster DNS serverov, ktor\u00fd sa synchronizuje so servermi z\u00e1kazn\u00edka. <\/li>\n<li>Vytvorili sme samostatn\u00fd s\u00faborov\u00fd server na v\u00fdmenu \u00fadajov. <\/li>\n<li>Aby sme mohli uchov\u00e1va\u0165 r\u00f4zne konfigur\u00e1cie, pridali sme Gitlab. <\/li>\n<li>Na r\u00f4znu citliv\u00fa inform\u00e1ciu sme pou\u017eili HashiCorp Vault.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Proces migr\u00e1cie<\/h3>\n<p>\nV\u0161eobecne sa proces migr\u00e1cie sklad\u00e1 z nasleduj\u00facich f\u00e1z:<\/p>\n<ul>\n<li>pr\u00edprava v\u0161etkej potrebnej projektovej dokument\u00e1cie;<\/li>\n<li>rokovania s aktu\u00e1lnym poskytovate\u013eom \u2013 rie\u0161enie organiza\u010dn\u00fdch ot\u00e1zok;<\/li>\n<li>n\u00e1kup, dod\u00e1vka a in\u0161tal\u00e1cia nov\u00e9ho hardv\u00e9ru pod\u013ea projektu;<\/li>\n<li>testovacia migr\u00e1cia a ladenie procesu;<\/li>\n<li>presun syst\u00e9mov, bojov\u00e1 migr\u00e1cia.<\/li>\n<\/ul>\n<p>\nNa konci okt\u00f3bra 2019 sme podp\u00edsali zmluvu, n\u00e1sledne navrhli architekt\u00faru a po jej schv\u00e1len\u00ed so z\u00e1kazn\u00edkom objednali potrebn\u00fd hardv\u00e9r. <\/p>\n<p>Na \u010do je potrebn\u00e9 sa zamera\u0165 najprv, s\u00fa dodacie lehoty zariadenia. Priemerne dodanie certifikovan\u00e9ho hardv\u00e9ru pod SAP NAHA, ktor\u00fd sp\u013a\u0148a po\u017eiadavky v\u00fdrobcu softv\u00e9ru na hardv\u00e9rov\u00e9 platformy, trv\u00e1 10-12 t\u00fd\u017ed\u0148ov. A vzh\u013eadom na sez\u00f3nnos\u0165 (realiz\u00e1cia projektu sa kryla pr\u00e1ve s nov\u00fdm rokom) sa tento term\u00edn mohol pred\u013a\u017ei\u0165 e\u0161te o mesiac. Preto bolo potrebn\u00e9 maxim\u00e1lne ur\u00fdchli\u0165 proces: pracovali sme s distrib\u00fatorom-dod\u00e1vate\u013eom, dohadovali sme sa na ur\u00fdchlenom dodan\u00ed letadlom (namiesto pozemnej a n\u00e1mornej dopravy).<\/p>\n<p>November a december sme venovali pr\u00edprave na migr\u00e1ciu a z\u00edskaniu \u010dasti zariadenia. Pr\u00edpravu sme vykonali na testovacom st\u00e1nku v na\u0161ej verejnej cloude, kde sme pre\u0161li v\u0161etk\u00fdmi hlavn\u00fdmi krokmi a odhalili mo\u017en\u00e9 komplik\u00e1cie a probl\u00e9my:<\/p>\n<ul>\n<li>pripravili sme podrobn\u00fd pl\u00e1n spolupr\u00e1ce \u00fa\u010dastn\u00edkov projektov\u00fdch t\u00edmov s \u010dasov\u00fdmi harmonogramami;<\/li>\n<li>postavili sme testovac\u00ed st\u00e1nok pre datab\u00e1zy a servery aplik\u00e1ci\u00ed pribli\u017ene tak, ako je to v cie\u013eovej infra\u0161trukt\u00fare;<\/li>\n<li>nastavili sme potrebn\u00e9 komunika\u010dn\u00e9 kan\u00e1ly a infra\u0161trukt\u00farne slu\u017eby, aby sme overili funkciu integr\u00e1ci\u00ed;<\/li>\n<li>prepracovali sme cutover scen\u00e1re;<\/li>\n<li>cloud n\u00e1m tie\u017e pomohol vytvori\u0165 prednastaven\u00e9 \u0161abl\u00f3ny virtu\u00e1lnych strojov, ktor\u00e9 sme n\u00e1sledne jednoducho importovali a nasadili v cie\u013eovej infra\u0161trukt\u00fare. <\/li>\n<\/ul>\n<p>\nTesne pred novoro\u010dn\u00fdmi sviatkami k n\u00e1m pri\u0161la prv\u00e1 d\u00e1vka zariadenia. To umo\u017enilo nasadi\u0165 \u010das\u0165 syst\u00e9mov na skuto\u010dnom hardv\u00e9ri. Preto\u017ee dorazilo \u010faleko nie v\u0161etko, pripojili sme n\u00e1hradn\u00e9 zariadenie, o dodan\u00ed ktor\u00e9ho sme sa dohodli s dod\u00e1vate\u013eom a distrib\u00fatormi. Zvy\u0161ky cie\u013eovej infra\u0161trukt\u00fary sme z\u00edskali u\u017e v z\u00e1vere\u010dnej f\u00e1ze.<br \/>\nAby sme stihli term\u00edn, na\u0161i in\u017einieri museli obetova\u0165 novoro\u010dn\u00e9 pr\u00e1zdniny a za\u010da\u0165 pr\u00e1cu na pr\u00edprave cie\u013eovej infra\u0161trukt\u00fary 2. janu\u00e1ra, v najv\u00e4\u010d\u0161om rozkvete sviatkov. \u00c1no, tak\u00e9 sa niekedy st\u00e1va, ke\u010f s\u00fa naliehav\u00e9 situ\u00e1cie a in\u00e9 mo\u017enosti nie s\u00fa. Na hre bola funk\u010dnos\u0165 syst\u00e9mov, od ktor\u00fdch z\u00e1vis\u00ed \u017eivotaschopnos\u0165 podniku.<\/p>\n<p>Celkov\u00fd priebeh migr\u00e1cie vyzeral takto: najprv najmenej kritick\u00e9 syst\u00e9my (v\u00fdvojov\u00e9 prostredie, testovacie prostredie), potom produkt\u00edvne syst\u00e9my. Fin\u00e1lna f\u00e1za migr\u00e1cie prebiehala koncom janu\u00e1ra a za\u010diatkom febru\u00e1ra.<\/p>\n<p><img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/154fa75c3b3083f05305c9a6b05e9c75.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nProces migr\u00e1cie bol napl\u00e1novan\u00fd na min\u00fatu presne. Ide o cutover pl\u00e1n so zoznamom v\u0161etk\u00fdch \u00faloh, \u010dasom vyhotovenia a zodpovedn\u00fdmi osobami. V\u0161etky kroky u\u017e boli odsk\u00fa\u0161an\u00e9 na testovacej migr\u00e1cii, tak\u017ee v re\u00e1lnej migr\u00e1cii bolo potrebn\u00e9 len nasledova\u0165 pl\u00e1n a koordinova\u0165 proces. <\/p>\n<p><img decoding=\"async\" alt=\"Sk\u00fasenosti so zmenou SAP hostingu: ako migrova\u0165 syst\u00e9my tak, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/022611d5583bff79ad69d785f7099cef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMigr\u00e1cia sa realizovala syst\u00e9movo v nieko\u013ek\u00fdch etap\u00e1ch. V ka\u017edej f\u00e1ze s\u00fa dve syst\u00e9my. <\/p>\n<p>V\u00fdsledkom trojmesa\u010dn\u00e9ho sprintu bol syst\u00e9m, ktor\u00fd plne fungoval v d\u00e1tovom centre KROK. Celkovo bol pozit\u00edvny v\u00fdsledok dosiahnut\u00fd v\u010faka spolo\u010dnej pr\u00e1ci, pr\u00edspevok a nasadenie v\u0161etk\u00fdch \u00fa\u010dastn\u00edkov procesu bolo maxim\u00e1lne.<\/p>\n<h3>\u00daloha objedn\u00e1vate\u013ea v projekte<\/h3>\n<p>\nKomunik\u00e1cia s poskytovate\u013eom, od ktor\u00e9ho n\u00e1\u0161 klient odch\u00e1dzal, nebola jednoduch\u00e1. Je to pochopite\u013en\u00e9, boli posledn\u00ed na zozname os\u00f4b zainteresovan\u00fdch na \u00faspe\u0161nom dokon\u010den\u00ed projektu. Objedn\u00e1vate\u013e prevzal \u00falohy t\u00fdkaj\u00face sa eskal\u00e1cie a rie\u0161enia v\u0161etk\u00fdch komunika\u010dn\u00fdch probl\u00e9mov a zvl\u00e1dol to na 100500%. Za to mu patr\u00ed osobitn\u00e9 po\u010fakovanie. Bez tak\u00e9hoto akt\u00edvneho zapojenia do procesu by mohol by\u0165 v\u00fdsledok projektu \u00faplne in\u00fd. <\/p>\n<p>V d\u00f4sledku form\u00e1lnosti procesov na strane \u201eb\u00fdval\u00e9ho\u201c poskytovate\u013ea sa o spr\u00e1vu infra\u0161trukt\u00fary starali odborn\u00edci, ktor\u00ed boli v priamom zmysle slova vzdialen\u00ed od probl\u00e9mov, v tom \u010dase e\u0161te ich z\u00e1kazn\u00edka. Napr\u00edklad proces exportu jednej a tej istej datab\u00e1zy mohol trva\u0165 od hodiny do piatich. Vtedy sa zdalo, \u017ee je to ak\u00e1ko\u013evek m\u00e1gia, tajomstvo, ktor\u00e9 sa n\u00e1m nikdy neodhalilo. Asi in\u017einieri technickej podpory medzi\u010dasom prepadli medit\u00e1cii, zab\u00fadaj\u00fac na to, \u017ee niekde tam v \u010falekom Rusku s\u00fa term\u00edny, in\u017einieri bez novoro\u010dn\u00fdch \u0161al\u00e1tov, pla\u010de a trp\u00ed z\u00e1kazn\u00edk\u2026<\/p>\n<h3>Z\u00e1ver projektu<\/h3>\n<p>\nFin\u00e1lnym akordom migr\u00e1cie bolo odovzdanie syst\u00e9mov do spr\u00e1vy. <\/p>\n<p>Teraz poskytujeme slu\u017ebu jedn\u00e9ho okna pre po\u017eiadavky z\u00e1kazn\u00edka a pokr\u00fdvame cel\u00fd objem \u00faloh t\u00fdkaj\u00facich sa spr\u00e1vy komponentov infra\u0161trukt\u00fary a SAP basis spolu s partnerom \u2014 itelligence. Klient \u017eije v s\u00fakromnej cloudovej infra\u0161trukt\u00fare u\u017e pol roka. Tu s\u00fa \u0161tatistiky o servisn\u00fdch pr\u00edpadoch za toto obdobie:<\/p>\n<ul>\n<li>90 incidentov (20% bolo vyrie\u0161en\u00fdch bez zapojenia z\u00e1kazn\u00edka)<\/li>\n<li>Rie\u0161en\u00e9 v r\u00e1mci SLA \u2013 100%<\/li>\n<li>Nepl\u00e1novan\u00fdch zastaven\u00ed syst\u00e9mov \u2013 0<\/li>\n<\/ul>\n<p>\nAk m\u00e1te \u00falohy podobn\u00e9 t\u00fdm, ktor\u00e9 mal n\u00e1\u0161 klient, a chcete sa dozvedie\u0165 viac o tom, ako ich vyrie\u0161i\u0165, nap\u00ed\u0161te: ahaidukov@croc.ru<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/croccloudteam\/blog\/521006\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u043b\u0438 \u043c\u043e\u0436\u043d\u043e? \u041a\u043e\u043d\u0435\u0447\u043d\u043e, \u043c\u0438\u0433\u0440\u0430\u0446\u0438\u044f SAP-\u0441\u0438\u0441\u0442\u0435\u043c \u2014 \u044d\u0442\u043e \u0441\u043b\u043e\u0436\u043d\u044b\u0439 \u0438 \u043a\u0440\u043e\u043f\u043e\u0442\u043b\u0438\u0432\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441, \u0434\u043b\u044f \u0443\u0441\u043f\u0435\u0445\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0432\u0430\u0436\u043d\u0430 \u0441\u043b\u0430\u0436\u0435\u043d\u043d\u0430\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u0432\u0441\u0435\u0445 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u043e\u0432. \u0410 \u0435\u0441\u043b\u0438 \u043c\u0438\u0433\u0440\u0430\u0446\u0438\u044f \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u0441\u0436\u0430\u0442\u044b\u0435 \u0441\u0440\u043e\u043a\u0438 \u2014 \u0437\u0430\u0434\u0430\u0447\u0430 \u043c\u043d\u043e\u0433\u043e\u043a\u0440\u0430\u0442\u043d\u043e \u0443\u0441\u043b\u043e\u0436\u043d\u044f\u0435\u0442\u0441\u044f. \u041d\u0435 \u0432\u0441\u0435 \u0440\u0435\u0448\u0430\u044e\u0442\u0441\u044f \u043d\u0430 \u044d\u0442\u043e. \u041f\u0440\u0438\u0447\u0438\u043d \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u043e\u0446\u0435\u0441\u0441 \u0441\u0430\u043c \u043f\u043e \u0441\u0435\u0431\u0435 \u0434\u043b\u0438\u0442\u0435\u043b\u0435\u043d \u0438 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u043e\u043d\u043d\u043e \u0441\u043b\u043e\u0436\u0435\u043d. \u041f\u043b\u044e\u0441 \u0435\u0441\u0442\u044c \u0440\u0438\u0441\u043a \u043d\u0435\u0437\u0430\u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0441\u0442\u043e\u0435\u0432 \u0441\u0438\u0441\u0442\u0435\u043c. \u0418\u043b\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":95982,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-95981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418\u043b\u0438 \u043c\u043e\u0436\u043d\u043e?\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/opyt-smeny-sap-hostinga-kak-migrirovat-sistemy-chtoby-ne-bylo-muchitelno-bolno\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" 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