{"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\/cs\/blog\/administrirovanie\/opyt-smeny-sap-hostinga-kak-migrirovat-sistemy-chtoby-ne-bylo-muchitelno-bolno","title":{"rendered":"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/573a399cc8d2c0e30cd97478bfcfcbca.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNebo m\u016f\u017eeme? Samoz\u0159ejm\u011b, migrace syst\u00e9m\u016f SAP je slo\u017eit\u00fd a n\u00e1ro\u010dn\u00fd proces, jeho\u017e \u00fasp\u011bch z\u00e1vis\u00ed na koordinovan\u00e9 pr\u00e1ci v\u0161ech \u00fa\u010dastn\u00edk\u016f. A pokud je migrace prov\u00e1d\u011bna ve zkr\u00e1cen\u00fdch lh\u016ft\u00e1ch, \u00fakol se n\u011bkolikr\u00e1t komplikuje. Ne ka\u017ed\u00fd se na to odv\u00e1\u017e\u00ed. D\u016fvod\u016f m\u016f\u017ee b\u00fdt n\u011bkolik. Nap\u0159\u00edklad, proces je s\u00e1m o sob\u011b dlouh\u00fd a organiza\u010dn\u011b slo\u017eit\u00fd. K tomu existuje riziko nepl\u00e1novan\u00fdch prostoje syst\u00e9m\u016f. Nebo z\u00e1kazn\u00edci nejsou jisti, \u017ee po takov\u00e9 operaci z\u00edskaj\u00ed benefity \u00fam\u011brn\u00e9 vynalo\u017een\u00fdm \u00fasil\u00edm. Nicm\u00e9n\u011b, v\u00fdjimky se tak\u00e9 vyskytuj\u00ed. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nPodrobn\u011bji se zam\u011b\u0159\u00edme na obt\u00ed\u017ee, s nimi\u017e se objednatel\u00e9 setk\u00e1vaj\u00ed b\u011bhem migrace a podpory syst\u00e9m\u016f SAP, probereme, pro\u010d stereotypey ne v\u017edy odpov\u00eddaj\u00ed realit\u011b, a pod\u011bl\u00edme se o p\u0159\u00edpad, jak se n\u00e1m poda\u0159ilo migrovat syst\u00e9my z\u00e1kazn\u00edka na novou infrastrukturu za pouh\u00e9 t\u0159i a kousek m\u011bs\u00edce. <\/p>\n<h3>Hosting syst\u00e9m\u016f SAP<\/h3>\n<p>\nJe\u0161t\u011b p\u0159ed p\u011bti lety bylo t\u011b\u017ek\u00e9 si p\u0159edstavit, \u017ee klienti za\u010dnou masov\u011b vyu\u017e\u00edvat hostingov\u00e9 zdroje pro aplikace SAP. V drtiv\u00e9 v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f byly zav\u00e1d\u011bny on-premise. Nicm\u00e9n\u011b s v\u00fdvojem model\u016f outsourcingu a trhu cloudov\u00fdch slu\u017eeb se pohled z\u00e1kazn\u00edk\u016f za\u010dal m\u011bnit. Jak\u00e9 jsou argumenty, kter\u00e9 ovliv\u0148uj\u00ed v\u00fdb\u011br v prosp\u011bch cloudu pro SAP?<\/p>\n<ul>\n<li>Pro nov\u00e1\u010dky, kte\u0159\u00ed teprve pl\u00e1nuj\u00ed zaveden\u00ed SAP, je cloudov\u00e1 infrastruktura t\u00e9m\u011b\u0159 standardn\u00ed volbou \u2013 \u0161k\u00e1lovatelnost zdroj\u016f podle aktu\u00e1ln\u00ed pot\u0159eby syst\u00e9mu a neochota odv\u00e1d\u011bt zdroje na rozvoj nepodstatn\u00fdch kompetenc\u00ed.<\/li>\n<li>V spole\u010dnostech s rozs\u00e1hlou syst\u00e9movou krajinou zaji\u0161\u0165uje hosting syst\u00e9m\u016f SAP CIO kvalitativn\u011b jinou \u00farove\u0148 \u0159\u00edzen\u00ed rizik, proto\u017ee za SLA odpov\u00edd\u00e1 partner.<\/li>\n<li>T\u0159et\u00ed z nej\u010dast\u011bji uv\u00e1d\u011bn\u00fdch argument\u016f je vysok\u00e1 cena v\u00fdstavby infrastruktury pro realizaci sc\u00e9n\u00e1\u0159\u016f vysok\u00e9 dostupnosti a DR.<\/li>\n<li>Faktor 2027 \u2013 ozn\u00e1men\u00e9 dodavatelem ukon\u010den\u00ed podpory zastaral\u00fdch syst\u00e9m\u016f v roce 2027. To znamen\u00e1 p\u0159evod DB na HANA, co\u017e s sebou nese n\u00e1klady na modernizaci a n\u00e1kup nov\u00fdch v\u00fdpo\u010detn\u00edch v\u00fdkon\u016f.<\/li>\n<\/ul>\n<p>\nTrh SAP hostingu v \u010cesku lze nyn\u00ed pova\u017eovat za dostate\u010dn\u011b zral\u00fd. To poskytuje \u0161irok\u00e9 mo\u017enosti pro klienty, kte\u0159\u00ed cht\u011bj\u00ed zm\u011bnit sv\u00e9 hostingov\u00e9 platformy. Takov\u00e9 projekty v\u0161ak mohou spravedliv\u011b vzbuzovat obavy u firem kv\u016fli slo\u017eitosti migra\u010dn\u00edho procesu. To nut\u00ed z\u00e1kazn\u00edky kl\u00e1st vy\u0161\u0161\u00ed n\u00e1roky na poskytovatele slu\u017eeb, kte\u0159\u00ed mus\u00ed m\u00edt nejen v\u00fdjime\u010dn\u00e9 kompetence v oblasti hostingu a podpory SAP syst\u00e9m\u016f, ale tak\u00e9 \u00fasp\u011b\u0161n\u00e9 zku\u0161enosti v oblasti migrace. <\/p>\n<h3>Jak\u00e9 jsou obt\u00ed\u017ee p\u0159i zm\u011bn\u011b SAP hostingu? <\/h3>\n<p>\nHostov\u00e1n\u00ed m\u016f\u017ee m\u00edt r\u016fzn\u00e9 formy. Nesoulad se sl\u00edbenou \u00farovn\u00ed slu\u017eeb, \u0159ada \"ale\" a hv\u011bzdi\u010dek s drobn\u00fdm p\u00edsmem, omezen\u00e9 zdroje a mo\u017enosti <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/\"   title=\"hostingov\u00e9ho poskytovatele\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1214\">hostingov\u00e9ho poskytovatele<\/a>, nedostatek flexibility v komunikaci se z\u00e1kazn\u00edkem, byrokracie, technick\u00e1 omezen\u00ed, n\u00edzk\u00e1 odbornost specialist\u016f technick\u00e9 podpory a tak\u00e9 mnoh\u00e9 dal\u0161\u00ed nuance \u2013 to je jen mal\u00e1 \u010d\u00e1st skryt\u00fdch n\u00e1strah, se kter\u00fdmi se mohou z\u00e1kazn\u00edci setkat p\u0159i provozov\u00e1n\u00ed sv\u00fdch podnikov\u00fdch syst\u00e9m\u016f v outsourcingov\u00fdch infrastruktur\u00e1ch. \u010casto z\u016fst\u00e1vaj\u00ed tyto probl\u00e9my pro klienta skryt\u00e9, zakopan\u00e9 v mnohastr\u00e1nkov\u00fdch kontraktech, a objevuj\u00ed se a\u017e b\u011bhem vyu\u017e\u00edv\u00e1n\u00ed slu\u017eeb. <\/p>\n<p>V ur\u010dit\u00e9m okam\u017eiku se z\u00e1kazn\u00edkovi stane z\u0159ejm\u00fdm, \u017ee \u00farove\u0148 slu\u017eeb, kter\u00e9 dost\u00e1v\u00e1, je daleko od jeho o\u010dek\u00e1v\u00e1n\u00ed. To se st\u00e1v\u00e1 jak\u00fdmsi katalyz\u00e1torem pro hled\u00e1n\u00ed \u0159e\u0161en\u00ed na zlep\u0161en\u00ed situace a v p\u0159\u00edpad\u011b ne\u00fasp\u011bchu, kdy se probl\u00e9my nahromad\u00ed na maximum a bolesti se stanou nesnesiteln\u00fdmi, p\u0159ech\u00e1zej\u00ed k aktivn\u00edm akc\u00edm v hled\u00e1n\u00ed alternativn\u00edch mo\u017enost\u00ed pro zm\u011bnu poskytovatele slu\u017eeb.<\/p>\n<p>Pro\u010d se \u010dek\u00e1 na posledn\u00ed chv\u00edli? D\u016fvod je prost\u00fd \u2013 proces p\u0159enosu syst\u00e9m\u016f pro klienty nen\u00ed v\u017edy pr\u016fhledn\u00fd a srozumiteln\u00fd. Klientovi se obt\u00ed\u017en\u011b posuzuj\u00ed skute\u010dn\u00e9 rizika spojen\u00e1 s migra\u010dn\u00edm procesem. Lze \u0159\u00edci, \u017ee migrace pro klienty je jak\u00fdmsi \u010dern\u00fdm boxem: nejsou jasn\u00e9 n\u00e1klady, doba v\u00fdpadku syst\u00e9m\u016f, rizika a jak je minimalizovat, a v\u016fbec je to temn\u00e9 a d\u011bsiv\u00e9. Tady plat\u00ed, \u017ee pokud se to nepoda\u0159\u00ed, hlavy l\u00e9taj\u00ed jak u vrcholov\u00fdch mana\u017eer\u016f, tak u realiz\u00e1tor\u016f.<\/p>\n<p>SAP \u2014 to jsou podnikov\u00e9 syst\u00e9my, kter\u00e9 jsou slo\u017eit\u00e9 a ne zrovna levn\u00e9. Na jejich implementaci, \u00fapravy a podporu se vynakl\u00e1daj\u00ed zna\u010dn\u00e9 rozpo\u010dty a jejich dostupnost a spr\u00e1vn\u00fd chod z\u00e1vis\u00ed na \u017eivotaschopnosti podniku. A nyn\u00ed si p\u0159edstavte d\u016fsledky zastaven\u00ed n\u011bjak\u00e9 velk\u00e9 v\u00fdroby. To jsou finan\u010dn\u00ed ztr\u00e1ty, kter\u00e9 mohou b\u00fdt vyj\u00e1d\u0159eny \u010d\u00edsly s velk\u00fdm po\u010dtem nul, a tak\u00e9 reputa\u010dn\u00ed a dal\u0161\u00ed, nem\u00e9n\u011b v\u00fdznamn\u00e9 rizika. <\/p>\n<p>Pod\u00edv\u00e1me se na probl\u00e9my, kter\u00e9 mohou nastat na ka\u017ed\u00e9 f\u00e1zi v p\u0159\u00edpad\u011b migrace SAP syst\u00e9m\u016f jednoho z na\u0161ich z\u00e1kazn\u00edk\u016f. <\/p>\n<h3>P\u0159\u00edprava a projektov\u00e1n\u00ed<\/h3>\n<p>\nMigrace je formula s mnoha r\u016fzn\u00fdmi slo\u017ekami. A jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch je f\u00e1ze projektov\u00e1n\u00ed a p\u0159\u00edpravy c\u00edlov\u00e9 (nov\u00e9) infrastruktury. <\/p>\n<p>Bylo t\u0159eba se pono\u0159it do sou\u010dasn\u00e9 realizace syst\u00e9m\u016f, jejich architektury. V c\u00edlov\u00e9 infrastruktu\u0159e jsme n\u011bkde zopakovali existuj\u00edc\u00ed \u0159e\u0161en\u00ed, v n\u011bkter\u00fdch okam\u017eic\u00edch doplnili a zlep\u0161ili, n\u011bkde p\u0159ed\u011blali, promysleli a vybrali \u0159e\u0161en\u00ed zaji\u0161\u0165uj\u00edc\u00ed odolnost v\u016f\u010di poruch\u00e1m a dostupnost, a tak\u00e9 maxim\u00e1ln\u011b konsolidovali v\u0161echny zdroje.<\/p>\n<p>V pr\u016fb\u011bhu projektov\u00e1n\u00ed bylo provedeno mnoho r\u016fzn\u00fdch cvi\u010den\u00ed, kter\u00e9 nakonec umo\u017enily co nejl\u00e9pe se p\u0159ipravit na migraci a zohlednit v\u0161echny mo\u017en\u00e9 drobnosti a n\u00e1strahy (o nich pozd\u011bji).<\/p>\n<p>Co se n\u00e1m nakonec poda\u0159ilo \u2014 individu\u00e1ln\u011b navr\u017een\u00e1 infrastruktura soukrom\u00e9ho cloudu na z\u00e1klad\u011b na\u0161eho datacentra:<\/p>\n<ul>\n<li>vyhrazen\u00e9 fyzick\u00e9 servery pro SAP HANA; <\/li>\n<li>virtualiza\u010dn\u00ed platforma VMware pro aplika\u010dn\u00ed servery a infrastrukturn\u00ed slu\u017eby;<\/li>\n<li>duplikovan\u00e9 komunika\u010dn\u00ed kan\u00e1ly mezi datacentry pro L2; <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"135\">VPN<\/a>;<\/li>\n<li>dva hlavn\u00ed \u00falo\u017en\u00e9 syst\u00e9my pro odd\u011blen\u00ed produkce a \"v\u0161ech ostatn\u00edch\";<\/li>\n<li>Z\u00e1lohovac\u00ed syst\u00e9m na b\u00e1zi Veritas Netbackup s odd\u011blen\u00fdm serverem, diskovou polic\u00ed a p\u00e1sem knihovny.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/737d05a99e17a99fe67b8fc196f40c1e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA te\u010f, jak jsme to v\u0161echno realizovali z technick\u00e9ho hlediska. <\/p>\n<h3>SAP<\/h3>\n<p><\/p>\n<ul>\n<li>Pro efektivn\u00ed vyu\u017eit\u00ed \u00falo\u017ei\u0161\u0165 pro produktivn\u00ed HANA jsme pou\u017eili sd\u00edlen\u00e9 disky bez syst\u00e9mov\u00e9 replikace DB prost\u0159edky SAP. V\u0161e bylo zabaleno do Active-Standby clusteru SUSE HAE na b\u00e1zi Pacemaker. Ano, doba obnovy je o n\u011bco del\u0161\u00ed ne\u017e s replikac\u00ed, ale u\u0161et\u0159\u00edme prostor v \u00falo\u017ei\u0161ti STH v hodnot\u011b dvoukr\u00e1t a t\u00edm p\u00e1dem i rozpo\u010det z\u00e1kazn\u00edka. <\/li>\n<li>V p\u0159\u00edpravn\u00fdch prost\u0159ed\u00edch byly klastry HANA opu\u0161t\u011bny, ale technicky byla zopakov\u00e1na konfigurace produkce. <\/li>\n<li>Testovac\u00ed prost\u0159ed\u00ed a prost\u0159ed\u00ed pro v\u00fdvoj byly rozlo\u017eeny na n\u011bkolik server\u016f bez klastr\u016f v konfiguraci MCOS.<\/li>\n<li>V\u0161echny servery aplikac\u00ed byly virtualizov\u00e1ny a um\u00edst\u011bny do VMware.<\/li>\n<\/ul>\n<p><\/p>\n<h3>S\u00edt\u011b<\/h3>\n<p><\/p>\n<ul>\n<li>Fyzicky byly odd\u011bleny okruhy \u0159\u00eddic\u00edch s\u00edt\u00ed a produk\u010dn\u00edch s\u00edt\u00ed pomoc\u00ed switchov\u00fdch stoh\u016f, p\u0159i\u010dem\u017e produk\u010dn\u00ed s\u00edt\u011b byly sm\u011brov\u00e1ny k datov\u00e9mu centru klienta.<\/li>\n<li>Bylo zaji\u0161t\u011bno dostate\u010dn\u00e9 mno\u017estv\u00ed s\u00ed\u0165ov\u00fdch rozhran\u00ed, aby nedoch\u00e1zelo ke m\u00edch\u00e1n\u00ed velk\u00fdch tok\u016f dat.<\/li>\n<li>Pro p\u0159enos dat ze \u00falo\u017ei\u0161\u0165 bylo vytvo\u0159eno klasick\u00e9 FC SAN uspo\u0159\u00e1d\u00e1n\u00ed.<\/li>\n<\/ul>\n<p><\/p>\n<h3>\u00dalo\u017ei\u0161t\u011b dat<\/h3>\n<p><\/p>\n<ul>\n<li>Produk\u010dn\u00ed a p\u0159\u00edpravn\u00e9 z\u00e1t\u011b\u017ee SAP byly ponech\u00e1ny na all-flash poli.<\/li>\n<li>Testovac\u00ed prost\u0159ed\u00ed v\u00fdvoj\u00e1\u0159\u016f a infrastrukturn\u00ed slu\u017eby byly um\u00edst\u011bny na samostatn\u00e9m hybridn\u00edm poli.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Z\u00e1loha<\/h3>\n<p><\/p>\n<ul>\n<li>Byla vytvo\u0159ena na z\u00e1klad\u011b Veritas Netbackup.<\/li>\n<li>Trochu jsme doplnili integrovan\u00e9 skripty pro z\u00e1lohov\u00e1n\u00ed konfigurac\u00ed MCOS.<\/li>\n<li>Pohotovostn\u00ed kopie byly ulo\u017eeny na diskovou sk\u0159\u00ed\u0148, aby bylo mo\u017en\u00e9 rychle obnovit, a pro dlouhodob\u00e9 uchov\u00e1n\u00ed pou\u017e\u00edv\u00e1me p\u00e1sky. <\/li>\n<\/ul>\n<p><\/p>\n<h3>Monitoring<\/h3>\n<p><\/p>\n<ul>\n<li>V\u0161echny hardware, OS a SAP byly zavedeny do Zabbixu. <\/li>\n<li>Sestavili jsme mnoho u\u017eite\u010dn\u00fdch dashboard\u016f v Grafana. <\/li>\n<li>P\u0159i vzniku alertu Zabbix um\u00ed zalo\u017eit tiket v syst\u00e9mu spr\u00e1vy incident\u016f, kter\u00fd m\u00e1me implementovan\u00fd na Jira. Tak\u00e9 se informace duplikuj\u00ed do Telegram kan\u00e1lu.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Telegram<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, 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=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/754b658441da1903a179f4b62041af45.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Stav serveru aplikac\u00ed SAP:<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/bc9ff5a68fd285e477a1c3978275c086.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Infrastrukturn\u00ed slu\u017eby<\/h3>\n<p><\/p>\n<ul>\n<li>Pro obsluhu intern\u00edch prostor n\u00e1zv\u016f byl spu\u0161t\u011bn cluster DNS server\u016f, kter\u00fd se synchronizuje se servery klienta. <\/li>\n<li>Byl vytvo\u0159en samostatn\u00fd souborov\u00fd server pro v\u00fdm\u011bnu dat. <\/li>\n<li>Aby bylo mo\u017en\u00e9 uchov\u00e1vat r\u016fzn\u00e9 konfigurace, p\u0159idali jsme Gitlab. <\/li>\n<li>Pro r\u016fzn\u00e9 Sensitive informace jsme zvolili HashiCorp Vault.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Proces migrace<\/h3>\n<p>\nV obecn\u00e9m p\u0159\u00edpad\u011b se proces migrace skl\u00e1d\u00e1 z n\u00e1sleduj\u00edc\u00edch f\u00e1z\u00ed:<\/p>\n<ul>\n<li>p\u0159\u00edprava ve\u0161ker\u00e9 pot\u0159ebn\u00e9 projektov\u00e9 dokumentace;<\/li>\n<li>jedn\u00e1n\u00ed s aktu\u00e1ln\u00edm poskytovatelem \u2014 \u0159e\u0161en\u00ed organiza\u010dn\u00edch z\u00e1le\u017eitost\u00ed;<\/li>\n<li>n\u00e1kup, doprava a instalace nov\u00e9ho za\u0159\u00edzen\u00ed pro projekt;<\/li>\n<li>testovac\u00ed migrace a lad\u011bn\u00ed procesu;<\/li>\n<li>p\u0159enos syst\u00e9m\u016f, ostr\u00e1 migrace.<\/li>\n<\/ul>\n<p>\nNa konci \u0159\u00edjna 2019 jsme podepsali smlouvu, pot\u00e9 jsme navrhli architekturu, a po jej\u00edm schv\u00e1len\u00ed klientem objednali pot\u0159ebn\u00e9 vybaven\u00ed. <\/p>\n<p>Na co se zam\u011b\u0159it jako na prvn\u00ed \u2014 dodac\u00ed lh\u016fty vybaven\u00ed. Dod\u00e1vka certifikovan\u00e9ho hardwaru pro SAP NAHA, kter\u00fd odpov\u00edd\u00e1 po\u017eadavk\u016fm v\u00fdrobce softwaru na hardware, pr\u016fm\u011brn\u011b trv\u00e1 10-12 t\u00fddn\u016f. A s ohledem na sez\u00f3nnost (realizace projektu spadla p\u0159esn\u011b na nov\u00e9 v\u00e1noce) se tento \u010das mohl prodlou\u017eit je\u0161t\u011b o m\u011bs\u00edc. Je tedy nutn\u00e9 maxim\u00e1ln\u011b urychlit proces: spolupracovali jsme s dodavatelem-distributorem a vyjedn\u00e1vali o urychlen\u00e9 dod\u00e1vce letadly (m\u00edsto pozemn\u00edch a n\u00e1mo\u0159n\u00edch cest).<\/p>\n<p>Listopad a prosinec byly v\u011bnov\u00e1ny p\u0159\u00edprav\u011b na migraci a z\u00edsk\u00e1n\u00ed \u010d\u00e1sti vybaven\u00ed. P\u0159\u00edpravy jsme provedli na testovac\u00edm stanovi\u0161ti v na\u0161em ve\u0159ejn\u00e9m cloudu, kde jsme si vyzkou\u0161eli v\u0161echny hlavn\u00ed kroky a zachytili mo\u017en\u00e9 slo\u017eitosti a probl\u00e9my:<\/p>\n<ul>\n<li>p\u0159ipravili jsme podrobn\u00fd pl\u00e1n spolupr\u00e1ce \u00fa\u010dastn\u00edk\u016f projektov\u00fdch t\u00fdm\u016f s minutov\u00fdmi \u010dasov\u00fdmi harmonogramy;<\/li>\n<li>vytvo\u0159ili jsme testovac\u00ed stanovi\u0161t\u011b pro datab\u00e1ze a aplika\u010dn\u00ed servery zhruba tak, jak v c\u00edlov\u00e9 infrastruktu\u0159e;<\/li>\n<li>nastavili jsme pot\u0159ebn\u00e9 komunika\u010dn\u00ed kan\u00e1ly a infrastrukturn\u00ed slu\u017eby k ov\u011b\u0159en\u00ed funk\u010dnosti integrac\u00ed;<\/li>\n<li>propracovali jsme sc\u00e9n\u00e1\u0159e cutover;<\/li>\n<li>cloud n\u00e1m tak\u00e9 pomohl vytvo\u0159it p\u0159ednastaven\u00e9 \u0161ablony virtu\u00e1ln\u00edch stroj\u016f, kter\u00e9 jsme n\u00e1sledn\u011b jednodu\u0161e importovali a nasadili v c\u00edlov\u00e9 infrastruktu\u0159e. <\/li>\n<\/ul>\n<p>\nNedlouho p\u0159ed v\u00e1no\u010dn\u00edmi sv\u00e1tky k n\u00e1m dorazila prvn\u00ed d\u00e1vka vybaven\u00ed. To umo\u017enilo nasadit \u010d\u00e1st syst\u00e9m\u016f na skute\u010dn\u00e9m hardwaru. Jeliko\u017e nep\u0159i\u0161lo v\u0161e, p\u0159ipojili jsme n\u00e1hradn\u00ed vybaven\u00ed, jeho\u017e dod\u00e1vku se n\u00e1m poda\u0159ilo domluvit s dodavatelem a distributory. Zbyl\u00e9 \u010d\u00e1sti c\u00edlov\u00e9 infrastruktury jsme obdr\u017eeli a\u017e v z\u00e1v\u011bre\u010dn\u00e9 f\u00e1zi.<br \/>\nAbychom stihli term\u00edn, museli na\u0161i technici ob\u011btovat v\u00e1no\u010dn\u00ed pr\u00e1zdniny a za\u010d\u00edt pracovat na p\u0159\u00edprav\u011b c\u00edlov\u00e9 infrastruktury 2. ledna, v nejv\u011bt\u0161\u00edm rozmachu sv\u00e1tk\u016f. Ano, takov\u00e9 v\u011bci se ob\u010das st\u00e1vaj\u00ed, kdy\u017e ho\u0159\u00ed a nen\u00ed jin\u00e1 mo\u017enost. \u0160lo o funk\u010dnost syst\u00e9m\u016f, od kter\u00fdch z\u00e1vis\u00ed \u010dinnost firmy.<\/p>\n<p>Celkov\u00fd pl\u00e1n migrace vypadal takto: nejprve \u2014 nejm\u00e9n\u011b kritick\u00e9 syst\u00e9my (v\u00fdvojov\u00e9 prost\u0159ed\u00ed, testovac\u00ed prost\u0159ed\u00ed), pot\u00e9 \u2014 produk\u010dn\u00ed syst\u00e9my. Kone\u010dn\u00e1 f\u00e1ze migrace prob\u00edhala na konci ledna a za\u010d\u00e1tkem \u00fanora.<\/p>\n<p><img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/154fa75c3b3083f05305c9a6b05e9c75.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPl\u00e1n migrace byl naps\u00e1n s p\u0159esnost\u00ed na minuty. Je to cutover pl\u00e1n se seznamem v\u0161ech \u00fakol\u016f, \u010dasem proveden\u00ed a odpov\u011bdn\u00fdmi osobami. V\u0161echny kroky byly testov\u00e1ny na zku\u0161ebn\u00ed migraci, tak\u017ee p\u0159i fin\u00e1ln\u00ed migraci sta\u010dilo pouze dodr\u017eovat pl\u00e1n a koordinovat proces. <\/p>\n<p><img decoding=\"async\" alt=\"Zku\u0161enost s p\u0159echodem na SAP hosting: jak migrovat syst\u00e9my, aby to nebolelo\" src=\"\/wp-content\/uploads\/2020\/10\/022611d5583bff79ad69d785f7099cef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMigrace prob\u00edhala syst\u00e9mov\u011b v n\u011bkolika f\u00e1z\u00edch. V ka\u017ed\u00e9 f\u00e1zi byly dv\u011b syst\u00e9my. <\/p>\n<p>V\u00fdsledkem t\u0159\u00edm\u011bs\u00ed\u010dn\u00edho sprintu byl syst\u00e9m pln\u011b funk\u010dn\u00ed v datov\u00e9m centru KROK. V z\u00e1sad\u011b bylo dosa\u017eeno pozitivn\u00edho v\u00fdsledku d\u00edky spolupr\u00e1ci, p\u0159i\u010dem\u017e p\u0159\u00edsp\u011bvek a oddanost v\u0161ech \u00fa\u010dastn\u00edk\u016f procesu byly maxim\u00e1ln\u00ed.<\/p>\n<h3>Role z\u00e1kazn\u00edka v projektu<\/h3>\n<p>\nKomunikace s poskytovatelem, kter\u00e9ho n\u00e1\u0161 klient opou\u0161t\u011bl, byla slo\u017eit\u00e1. Je to pochopiteln\u00e9, byli posledn\u00ed na seznamu osob zainteresovan\u00fdch na \u00fasp\u011b\u0161n\u00e9m dokon\u010den\u00ed projektu. Z\u00e1kazn\u00edk se chopil \u00fakol\u016f spojen\u00fdch s eskalac\u00ed a veden\u00edm v\u0161ech komunika\u010dn\u00edch ot\u00e1zek a zvl\u00e1dl to na 100500%. Za to mu pat\u0159\u00ed zvl\u00e1\u0161tn\u00ed d\u00edky. Bez takov\u00e9ho aktivn\u00edho zapojen\u00ed do procesu by mohl b\u00fdt v\u00fdsledek projektu zcela odli\u0161n\u00fd. <\/p>\n<p>Vzhledem k formalizovanosti proces\u016f u 'b\u00fdval\u00e9ho' poskytovatele se o infrastrukturu starali specialist\u00e9, kte\u0159\u00ed byli doslova vzd\u00e1len\u00ed probl\u00e9m\u016fm, kter\u00e9 je\u0161t\u011b v t\u00e9 dob\u011b m\u011bli. Nap\u0159\u00edklad proces exportu jedn\u00e9 a t\u00e9 sam\u00e9 datab\u00e1ze mohl trvat od jedn\u00e9 hodiny do p\u011bti. Tenkr\u00e1t se zd\u00e1lo, \u017ee to je n\u011bjak\u00e1 magie, jej\u00ed\u017e tajemstv\u00ed n\u00e1m nebylo odhaleno. Asi se technici podpory ve voln\u00fdch chv\u00edl\u00edch v\u011bnovali meditaci, zapom\u00ednaje, \u017ee n\u011bkde daleko v Rusku jsou term\u00edny, in\u017een\u00fd\u0159i bez novoro\u010dn\u00edch sal\u00e1t\u016f, pl\u00e1\u010d a utrpen\u00ed z\u00e1kazn\u00edka...<\/p>\n<h3>Z\u00e1v\u011bry projektu<\/h3>\n<p>\nFin\u00e1ln\u00edm akordem migrace byla p\u0159evod syst\u00e9m\u016f do \u00fadr\u017eby. <\/p>\n<p>Nyn\u00ed poskytujeme slu\u017ebu jednoho okna pro \u017e\u00e1dosti z\u00e1kazn\u00edka a pokr\u00fdv\u00e1me cel\u00fd objem \u00fakol\u016f spojen\u00fdch s \u00fadr\u017ebou komponent infrastruktury a SAP basis spole\u010dn\u011b s partnerem \u2014 itelligence. Klient \u017eije v priv\u00e1tn\u00edm cloudu ji\u017e p\u016fl roku. Zde jsou statistiky ohledn\u011b servisn\u00edch p\u0159\u00edpad\u016f za tuto dobu:<\/p>\n<ul>\n<li>90 incident\u016f (20% vy\u0159e\u0161eno bez zapojen\u00ed z\u00e1kazn\u00edka)<\/li>\n<li>Vy\u0159e\u0161eno v r\u00e1mci SLA \u2013 100%<\/li>\n<li>N\u00e1hodn\u00fdch v\u00fdpadk\u016f syst\u00e9m\u016f \u2013 0<\/li>\n<\/ul>\n<p>\nPokud m\u00e1te \u00fakoly podobn\u00e9 t\u011bm, kter\u00e9 m\u011bl n\u00e1\u0161 klient, a chcete se dozv\u011bd\u011bt v\u00edce o tom, jak je vy\u0159e\u0161it, napi\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 5.0.3 - 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\/cs\/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) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" 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