{"id":89805,"date":"2020-07-26T13:42:32","date_gmt":"2020-07-26T11:42:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/zakulise-kak-rozhdayutsya-kursy"},"modified":"2020-07-26T13:42:32","modified_gmt":"2020-07-26T11:42:32","slug":"zakulise-kak-rozhdayutsya-kursy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/zakulise-kak-rozhdayutsya-kursy","title":{"rendered":"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00da\u010dastn\u00edk p\u0159ich\u00e1z\u00ed na kurz nebo intenzivn\u00ed \u0161kolen\u00ed. Vid\u00ed uspo\u0159\u00e1dan\u00e9 \u0159ady technick\u00e9 podpory, pe\u010dliv\u011b veden\u00e9 nap\u00e1jec\u00ed kabely, \u0161achovnicov\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed p\u0159edn\u00e1\u0161kov\u00e9ho s\u00e1lu, jasn\u00e9 obr\u00e1zky a sch\u00e9mata slid\u016f. \u0158e\u010dn\u00edci s vtipem a \u00fasm\u011bvy pod\u00e1vaj\u00ed informace tak, \u017ee jen st\u00edh\u00e1te nas\u00e1vat v\u011bdomosti. St\u00e1nky jsou nastaven\u00e9, \u00fakoly z praxe se jednodu\u0161e zpravidla odr\u00e1\u017eej\u00ed od prst\u016f, ob\u010das je ale pot\u0159eba pomoc technick\u00e9 podpory.<\/p>\n<p><\/p>\n<p>A tak\u00e9 coffee breaky s podobn\u011b sm\u00fd\u0161lej\u00edc\u00edmi lidmi, \u017eiv\u00e1 a energick\u00e1 atmosf\u00e9ra, v\u00fdm\u011bna zku\u0161enost\u00ed, nejne\u010dekan\u011bj\u0161\u00ed ot\u00e1zky pro \u0159e\u010dn\u00edky. Odpov\u011bdi a informace, kter\u00e9 nenajdete v manu\u00e1lech, ale pouze v praxi. <\/p>\n<p><\/p>\n<p>Jak si mysl\u00edte, kolik \u010dasu, sil a nerv\u016f st\u00e1lo, aby to vypadalo p\u0159esn\u011b takto? <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/873baf9bfc365f21d5335cc21830bda6.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex> D\u011bkujeme Volodymyru Gurjanovovi, certifikovan\u00e9mu administr\u00e1torovi Kubernetes a in\u017een\u00fdrovi\/t\u00fdmov\u00e9mu vedouc\u00edmu ve Southbridge, kter\u00fd od sam\u00e9ho za\u010d\u00e1tku byl sv\u011bdkem a aktivn\u00edm \u00fa\u010dastn\u00edkem tvorby mnoha kurz\u016f Sl\u011brmu. <\/p>\n<p><\/p>\n<p>Vid\u011bl z\u00e1zem\u00ed tvorby kurz\u016f \u2014 obt\u00ed\u017ee a ostnat\u00e9 probl\u00e9my, post\u0159ehy a ne\u010dekan\u00e1 \u0159e\u0161en\u00ed. A ji\u017e obvykl\u00e9 intenzivy Kubernetes, jako jsou Sl\u011brmu Z\u00e1kladn\u00ed a Sl\u011brmu Mega. A nov\u00fd, do zna\u010dn\u00e9 m\u00edry p\u0159epracovan\u00fd kurz <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/81bKwg\">Sl\u011brmu DevOps:Tools&amp;Cheats<\/a><\/noindex>, kter\u00fd ne\u00faprosn\u011b p\u0159ich\u00e1z\u00ed a za\u010dne 19. srpna. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/87435233d00902beca0755291814a65a.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Ale asi u\u017e dost lyriky, p\u0159ejd\u011bme k p\u0159\u00edb\u011bhu. Jak se z p\u00e1r t\u00e9mat intenzivn\u00edho kurzu postupn\u011b vyvinul zcela sob\u011bsta\u010dn\u00fd a mnohostrann\u00fd <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/4hpuGw\">kurz Docker<\/a><\/noindex>. Tak\u017ee za\u010dnu vypr\u00e1v\u011bt, jak se vytv\u00e1\u0159ej\u00ed a rozv\u00edjej\u00ed kurzy \u2014 opravdov\u00fd \"A long time ago in a galaxy far, far away\u2026\"<\/p>\n<p><\/p>\n<h2 id=\"a-chto-zhe-tam-za-kulisami\">A co se d\u011bje za oponou?<\/h2>\n<p><\/p>\n<p>Pokud se pt\u00e1te, jak vytv\u00e1\u0159\u00edme kurzy a kde to v\u0161echno za\u010d\u00edn\u00e1, odpov\u00edm jednodu\u0161e: \"V\u0161echno za\u010d\u00edn\u00e1 s n\u00e1padem\".<\/p>\n<p><\/p>\n<p>Obvykle n\u00e1pad p\u0159ich\u00e1z\u00ed odkudsi \u2014 nesed\u00edme p\u0159ipout\u00e1ni ke stolu, dokud nevymysl\u00edme: \u201eNa jak\u00e9 t\u00e9ma ud\u011bl\u00e1me kurz?\u201c. N\u00e1pady p\u0159ich\u00e1zej\u00ed z extern\u00edch zdroj\u016f. N\u011bkdy se lid\u00e9 aktivn\u011b ptaj\u00ed: \u201eCo v\u00edte o konkr\u00e9tn\u00ed technologii?\u201c. Nebo jako s Dockerem, co\u017e se nedalo vm\u011bstnat do \u010dasov\u00e9ho harmonogramu intenzivn\u00edho kurzu \u2014 bylo jasn\u00e9, \u017ee to je t\u0159eba prezentovat zvl\u00e1\u0161\u0165, abychom v r\u00e1mci intenzivn\u00edho \u0161kolen\u00ed stihli n\u011bco pov\u011bd\u011bt. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/980209cd81459fd64ab90b86b3749774.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Pr\u00e1v\u011b tak se rod\u00ed n\u00e1pad. <\/p>\n<p><\/p>\n<p>Jakmile se objev\u00ed, za\u010d\u00edn\u00e1, podle m\u00e9ho n\u00e1zoru, ten nejt\u011b\u017e\u0161\u00ed moment \u2014 v\u016fbec pochopit, co v\u0161echno do tohoto kurzu zahrnout \u2014 je to velmi srovnateln\u00e9 s t\u00edm, jak se p\u0159ipravuj\u00ed \u0159e\u010dn\u00edci na r\u016fzn\u00e9 konference. <\/p>\n<p><\/p>\n<p>Existuje jedna hlavn\u00ed bolest, kdy\u017e si vybere\u0161 t\u00e9ma a p\u0159em\u00fd\u0161l\u00ed\u0161: \u201eA co o n\u011bm \u0159\u00edct? To je p\u0159\u00edli\u0161 jednoduch\u00e9, to je jasn\u00e9, to v\u0161ichni v\u011bd\u00ed.\u201c <\/p>\n<p><\/p>\n<p>Ale ve skute\u010dnosti to tak v\u016fbec nen\u00ed. A j\u00e1 osobn\u011b o tom mluv\u00edm na mnoha m\u00edstech, \u017ee to, co se ti zd\u00e1 b\u00fdt jasn\u00e9, pro ty, kdo k tob\u011b p\u0159ijdou poslouchat nebo absolvovat kurz, to v\u016fbec jasn\u00e9 nen\u00ed. A zde vznik\u00e1 velk\u00e9 mno\u017estv\u00ed pr\u00e1ce a vnit\u0159n\u00ed konflikt, co vlastn\u011b do kurzu zahrnout. Na v\u00fdsledku se pak vytvo\u0159\u00ed takov\u00fd seznam kapitol s velk\u00fdmi tahy, o \u010dem bude kurz. <\/p>\n<p><\/p>\n<p>A pak za\u010dne jednoduch\u00e1 rutinn\u00ed pr\u00e1ce:<\/p>\n<p><\/p>\n<ul>\n<li>V\u00fdb\u011br materi\u00e1lu <\/li>\n<li>Pe\u010dliv\u00e9 \u010dten\u00ed dokumentace k aktu\u00e1ln\u00ed verzi, proto\u017ee sv\u011bt IT se nyn\u00ed vyv\u00edj\u00ed neskute\u010dn\u00fdmi rychlostmi. I kdy\u017e na n\u011b\u010dem pracuje\u0161 a d\u011bl\u00e1\u0161 o tom kurz, mus\u00ed\u0161 j\u00edt do dokumentace a pod\u00edvat se, co nov\u00e9ho se objevilo, o \u010dem je zaj\u00edmav\u00e9 mluvit, co je mo\u017en\u00e9 zm\u00ednit jako obzvl\u00e1\u0161\u0165 u\u017eite\u010dn\u00e9. <\/li>\n<li>A vznik\u00e1 ur\u010dit\u00fd r\u00e1mec kurzu, kde u\u017e je v\u011bt\u0161ina t\u00e9mat pom\u011brn\u011b dob\u0159e pops\u00e1na a zd\u00e1 se, \u017ee te\u010f sta\u010d\u00ed nahr\u00e1vat videa a uv\u00e9st je do praxe. <\/li>\n<li>Ale ve skute\u010dnosti ne, pak za\u010d\u00edn\u00e1 t\u011b\u017ek\u00e1 pr\u00e1ce, ale u\u017e ne pro autory kurzu, ale pro ty, kdo testuj\u00ed. Obvykle m\u00e1me jako alfa-testery technickou podporu, kter\u00e1 za prv\u00e9 proch\u00e1z\u00ed kurzy kv\u016fli r\u016fzn\u00fdm syntaktick\u00fdm a gramatick\u00fdm chyb\u00e1m. Za druh\u00e9, kritizuj\u00ed n\u00e1s, kdy\u017e se objev\u00ed n\u011bjak\u00e9 \u00fapln\u011b nejasn\u00e9, matouc\u00ed pas\u00e1\u017ee. Kdy\u017e v textech vzniknou n\u011bjak\u00e9 slo\u017eit\u00e9 souv\u011bt\u00ed na n\u011bkolik stran nebo z\u0159ejm\u011b absurdn\u00ed v\u011bci. To v\u0161echno pe\u010dliv\u011b proch\u00e1zej\u00ed a vyhled\u00e1vaj\u00ed.<\/li>\n<li>Pak za\u010d\u00edn\u00e1 f\u00e1ze testov\u00e1n\u00ed praxe, kde se tak\u00e9 odhaluj\u00ed n\u011bjak\u00e9 o\u010dividn\u00e9 nefunk\u010dn\u00ed v\u011bci a ukazuj\u00ed se momenty, kter\u00e9 je mo\u017en\u00e9 naopak zkomplikovat, proto\u017ee jen sed\u011bt a kop\u00edrovat se st\u00e1v\u00e1 nezaj\u00edmav\u00fdm \u2014 a odhaluj\u00ed se m\u00edsta, kde po lidech, kte\u0159\u00ed budou t\u00edmto kurzem proch\u00e1zet, chceme opravdu hodn\u011b. A pak p\u0159ich\u00e1zej\u00ed doporu\u010den\u00ed: \u201eUd\u011blejte to, chlapi, tady jednodu\u0161eji, bude se to l\u00e9pe ch\u00e1pat a bude z toho v\u011bt\u0161\u00ed u\u017eitek.\u201c <\/li>\n<li>Jakmile je tato pr\u00e1ce hotova, je napsan\u00e1 \u010d\u00e1st t\u00fdkaj\u00edc\u00ed se videa, zd\u00e1 se, \u017ee v\u0161e je v po\u0159\u00e1dku. A u\u017e ji m\u016f\u017eeme vydat, na reklamu tohoto kurzu. Ale op\u011bt je to brzy \u2014 proto\u017ee jsme v posledn\u00ed dob\u011b p\u0159estali trochu v\u011b\u0159it sami sob\u011b a za\u010dali jsme v\u00edce pracovat s zp\u011btnou vazbou. Objevila se takov\u00e1 v\u011bc, jako je beta-testov\u00e1n\u00ed \u2013 to je, kdy\u017e jsou pozv\u00e1ni lid\u00e9, kte\u0159\u00ed jsou \u00fapln\u011b extern\u00ed, nijak nesouvis\u00ed s na\u0161\u00ed spole\u010dnost\u00ed a za n\u011bjak\u00e9 v\u00fdhody jim ukazujeme v\u0161echny \u010d\u00e1sti kurzu, videa, texty, praktick\u00e9 \u00fakoly, aby hodnotili kvalitu materi\u00e1lu, dostupnost materi\u00e1lu a pomohli n\u00e1m ud\u011blat kurz co nejl\u00e9pe. <\/li>\n<li>A kdy\u017e prob\u011bhne n\u011bkolik takov\u00fdch iterac\u00ed, mluv\u010d\u00edmi, alfa-testov\u00e1n\u00edm v podob\u011b technick\u00e9 podpory, beta-testov\u00e1n\u00edm, \u00fapravami. A pak za\u010d\u00edn\u00e1 v\u0161e znovu \u2014 technick\u00e1 podpora, beta-testov\u00e1n\u00ed, \u00fapravy. <\/li>\n<li>A v ur\u010dit\u00e9m okam\u017eiku p\u0159ich\u00e1z\u00ed pochopen\u00ed, \u017ee bu\u010f u\u017e p\u0159estaneme s \u00fapravami, proto\u017ee ud\u011blat to, aby se to l\u00edbilo v\u0161em \u2013 je zcela irr\u00e9\u00e1ln\u00e9, nebo budou p\u0159ijata n\u011bjak\u00e1 radik\u00e1ln\u00ed rozhodnut\u00ed. Kdy\u017e je mnoho pozn\u00e1mek k ur\u010dit\u00fdm m\u00edst\u016fm kritick\u00fdch \u2014 upravit je glob\u00e1ln\u011b, proto\u017ee n\u011bco se nepovedlo. <\/li>\n<li>Pak p\u0159ich\u00e1z\u00ed \u010das drobn\u00fdch \u00faprav \u2014 n\u011bkde je v\u011bta formulov\u00e1na ne moc hezky, n\u011bkdo preferuje jin\u00fd font, 14,5, ale rad\u011bji by 15,7. <\/li>\n<li>Kdy\u017e zb\u00fdvaj\u00ed takov\u00e1to typu pozn\u00e1mky, tak v\u0161e, kurz se v\u00edce-m\u00e9n\u011b otev\u00edr\u00e1, za\u010d\u00ednaj\u00ed ofici\u00e1ln\u00ed prodeje.<\/li>\n<\/ul>\n<p><\/p>\n<p>A na prvn\u00ed pohled je kr\u00e1tk\u00fd a jednoduch\u00fd \u00fakol vytvo\u0159it kurz, ale ukazuje se, \u017ee v\u016fbec nen\u00ed jednoduch\u00fd a zab\u00edr\u00e1 neuv\u011b\u0159iteln\u011b mnoho \u010dasu. <\/p>\n<p><\/p>\n<p>A je tu je\u0161t\u011b jeden d\u016fle\u017eit\u00fd bod, \u017ee pr\u00e1ce s kurzem nekon\u010d\u00ed, kdy\u017e je kurz vyd\u00e1n. Za prv\u00e9, pe\u010dliv\u011b \u010dteme koment\u00e1\u0159e, kter\u00e9 zanech\u00e1vaj\u00ed k t\u011bm \u010di on\u011bm \u010d\u00e1stem. A i p\u0159es v\u0161echny ty snahy, kter\u00e9 jsme vynalo\u017eili, se st\u00e1le objevuj\u00ed n\u011bjak\u00e9 nedostatky, kter\u00e9 se b\u011bhem \u010dasu, v re\u00e1ln\u00e9m \u010dase opravuj\u00ed, upravuj\u00ed, aby ka\u017ed\u00fd dal\u0161\u00ed u\u017eivatel dostal kvalitn\u011bj\u0161\u00ed slu\u017ebu. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/fedbce98b9e5ea950832e7d015f67ba1.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Ka\u017ed\u00fd kurz m\u00e1 sv\u00e9ho product ownera, kter\u00fd nejen ur\u010duje celkovou koncepci a kontroluje term\u00edny, ale tak\u00e9 si d\u011bl\u00e1 pozn\u00e1mky na okraj. A\u017e nastane \u010das na kompletn\u00ed p\u0159eps\u00e1n\u00ed kurzu, co\u017e se ur\u010dit\u011b stane, proto\u017ee za dva roky, nebo mo\u017en\u00e1 za rok, \u010d\u00e1st toho, co vyu\u010dujeme, se stane zastaral\u00fdm pouze t\u00edm, \u017ee mor\u00e1ln\u011b zest\u00e1rne. Product owner si d\u011bl\u00e1 pozn\u00e1mky o tom, co lid\u00e9 \u010dasto ot\u00e1zky, jak\u00e9 momenty byly nejasn\u00e9, kter\u00e9 \u00fakoly se zd\u00e1ly velmi slo\u017eit\u00e9 a kter\u00e9 byly naopak p\u0159\u00edli\u0161 jednoduch\u00e9. A to v\u0161e se bere v \u00favahu p\u0159i op\u011btovn\u00e9m nahr\u00e1v\u00e1n\u00ed kurzu, p\u0159i jak\u00e9mkoliv refaktoringu, aby ka\u017ed\u00e1 glob\u00e1ln\u00ed iterace kurzu byla lep\u0161\u00ed, pohodln\u011bj\u0161\u00ed a komfortn\u011bj\u0161\u00ed.<\/p>\n<p><\/p>\n<p>Tak vznikaj\u00ed kurzy. <\/p>\n<p><\/p>\n<h2 id=\"kak-rodilsya-kurs-po-docker\">Jak vznikl kurz o Dockeru<\/h2>\n<p><\/p>\n<p>To je samostatn\u00e9, a dokonce i neobvykl\u00e9 t\u00e9ma pro n\u00e1s. Proto\u017ee na jedn\u00e9 stran\u011b jsme ho nepl\u00e1novali ud\u011blat, proto\u017ee ho nab\u00edz\u00ed mnoho online \u0161kol. Na druh\u00e9 stran\u011b si v\u0161ak s\u00e1m \u0159ekl o svobodu a na\u0161el logick\u00e9 m\u00edsto v na\u0161\u00ed koncepci p\u0159\u00edpravy IT specialisty na Kubernetes. <\/p>\n<p><\/p>\n<p>Pokud mluv\u00edme velmi obecn\u011b, v\u0161echno to za\u010dalo s kurzem o Kubernetes, kdy\u017e byl teprve zah\u00e1jen, mysl\u00edm, po prvn\u00edm Slyrm. Shrom\u00e1\u017edili jsme zp\u011btnou vazbu a vid\u011bli jsme, \u017ee mnoho lid\u00ed chce o Dockeru n\u011bco nav\u00edc \u010d\u00edst, a v\u016fbec mnoz\u00ed p\u0159ich\u00e1zej\u00ed na z\u00e1kladn\u00ed kurz o Kubernetes, ani\u017e by v\u011bd\u011bli, co to je. <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/4hpuGw\">Docker<\/a><\/noindex>.<\/p>\n<p><\/p>\n<p>Proto jsme k druh\u00e9mu Slyrm vytvo\u0159ili kurz \u2014 vlastn\u011b ne kurz, ale p\u0159ipravili jsme p\u00e1r kapitol o dockerech. Kde jsme vysv\u011btlovali n\u011bkter\u00e9 z \u00fapln\u011b z\u00e1kladn\u00edch v\u011bc\u00ed, aby lid\u00e9, kte\u0159\u00ed p\u0159ich\u00e1zej\u00ed na intenzivn\u00ed kurz, se nec\u00edtili ochuzeni a ch\u00e1pali, co se d\u011bje. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/cf17f2908e3473da9ae20bebeff9cbad.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>A pak ud\u00e1losti pokra\u010dovaly zhruba takto. Mno\u017estv\u00ed materi\u00e1lu rostlo a p\u0159estalo se vej\u00edt do 3 dn\u016f. A vznikl logick\u00fd a z\u0159ejm\u00fd n\u00e1pad: pro\u010d z toho, co vyu\u010dujeme na Slyrm Basic, neud\u011blat takov\u00fd mal\u00fd kurz, na kter\u00fd bychom mohli pos\u00edlat lidi, kte\u0159\u00ed cht\u011bj\u00ed p\u0159ed intenzivn\u00edm kurzem o Kubernetes prozkoumat n\u011bco o Dockeru. <\/p>\n<p><\/p>\n<p>Slyrm Junior \u2014 to je v podstat\u011b spojen\u00ed n\u011bkolika z\u00e1kladn\u00edch kurz\u016f. Tak\u017ee kurz o Dockeru se stal sou\u010d\u00e1st\u00ed Slyrm Junior. To znamen\u00e1, \u017ee je to takov\u00e1 nulov\u00e1 \u00farove\u0148 p\u0159ed <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/emCKKQ\">Z\u00e1kladn\u00edm<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/nsuw3Q\">Megou<\/a><\/noindex>. A pak tam byly opravdu \u00fapln\u011b z\u00e1kladn\u00ed abstrakce. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/4693497bf9cb406c88d9230316477176.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>V ur\u010dit\u00e9m okam\u017eiku za\u010dali lid\u00e9 \u0159\u00edkat: \u201eChlapi, to je v\u0161echno skv\u011bl\u00e9, to sta\u010d\u00ed k tomu, abyste rozum\u011bli tomu, co \u0159\u00edk\u00e1te na intenzivn\u00edch kurzech. Ale kde se d\u00e1 podrobn\u011bji p\u0159e\u010d\u00edst o tom, co Docker m\u016f\u017ee, jak s n\u00edm pracovat a co vlastn\u011b je?\u201c. Tak vznikl n\u00e1pad vytvo\u0159it z n\u011bj p\u0159\u00edmo <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/4hpuGw\">komplexn\u00ed kurz o Dockeru<\/a><\/noindex>, abychom na n\u011bj mohli pos\u00edlat v\u0161echny lidi, kte\u0159\u00ed p\u0159ich\u00e1zej\u00ed na Sl\u00ebrm o Kubernetes, a na druh\u00e9 stran\u011b pro ty, kter\u00e9 Kubernetes v t\u00e9to f\u00e1zi v\u00fdvoje ani nezaj\u00edm\u00e1. Aby IT specialist\u00e9 mohli p\u0159ij\u00edt a prohl\u00e9dnout si n\u00e1\u0161 kurz o Dockeru a za\u010d\u00edt svou evolu\u010dn\u00ed cestu rovnou s \u010dist\u00fdm Dockerem. Abychom m\u011bli takov\u00fd komplexn\u00ed skon\u010den\u00fd kurz \u2014 a mnoz\u00ed, kdy\u017e se pod\u00edvaj\u00ed na tento kurz, pracuj\u00ed n\u011bjak\u00fd \u010das s \u010dist\u00fdm Dockerem, vyrostou do t\u00e9 \u00farovn\u011b, kdy u\u017e pot\u0159ebuj\u00ed Kubernetes nebo n\u011bjak\u00fd jin\u00fd orchestra\u010dn\u00ed syst\u00e9m. A p\u0159i\u0161li konkr\u00e9tn\u011b k n\u00e1m.<\/p>\n<p><\/p>\n<p>N\u011bkdy se objevuje ot\u00e1zka: \"Kte\u0159\u00ed lid\u00e9 nyn\u00ed nepot\u0159ebuj\u00ed Kubernetes?\" Ale tato ot\u00e1zka se net\u00fdk\u00e1 lid\u00ed, sp\u00ed\u0161e firem. Je t\u0159eba pochopit, \u017ee Kubernetes m\u00e1 ur\u010dit\u00e9 p\u0159\u00edpady, kde se hod\u00ed a \u00fakoly, kter\u00e9 dob\u0159e \u0159e\u0161\u00ed, zat\u00edmco jsou tak\u00e9 sc\u00e9n\u00e1\u0159e pou\u017eit\u00ed Kubernetes, kdy p\u0159in\u00e1\u0161\u00ed dodate\u010dnou bolest a str\u00e1d\u00e1n\u00ed. Tak\u017ee to z\u00e1le\u017e\u00ed nejen na lidech, ale na tom, co a jak firmy ji\u017e dlouho vyv\u00edjej\u00ed. <\/p>\n<p><\/p>\n<p>Nap\u0159\u00edklad n\u011bjak\u00fd hrozn\u00fd monolit Legacy \u2014 asi nem\u00e1 smysl ho strkat do Kubernetes, proto\u017ee to p\u0159inese v\u00edce probl\u00e9m\u016f ne\u017e v\u00fdhod. Nebo pokud jde o n\u011bjak\u00fd mal\u00fd projekt \u2014 m\u00e1 mal\u00e9 zat\u00ed\u017een\u00ed nebo obecn\u011b nen\u00ed mnoho pen\u011bz a zdroj\u016f. Tak\u017ee ho nem\u00e1 smysl p\u0159etahovat do Kubernetes. <\/p>\n<p><\/p>\n<p>A v\u016fbec, asi se d\u00e1 \u0159\u00edct, jak u\u017e mnoz\u00ed \u0159\u00edkali, \u017ee pokud si kladete ot\u00e1zku: \u201ePot\u0159ebuji Kubernetes?\u201c, tak pravd\u011bpodobn\u011b ho nepot\u0159ebujete. Nepamatuji si, kdo to poprv\u00e9 vymyslel, mysl\u00edm, \u017ee to byl Pa\u0161a Selivanov. S t\u00edm souhlas\u00edm na 100 %. A k a\u017e Kubernetes je t\u0159eba dosp\u011bt \u2014 a teprve kdy\u017e u\u017e se objevuje pochopen\u00ed, \u017ee ho opravdu pot\u0159ebujete a va\u0161\u00ed firm\u011b pom\u016f\u017ee \u0159e\u0161it ur\u010dit\u00e9 ot\u00e1zky, m\u00e1 smysl j\u00edt se u\u010dit a zjistit, jak ho konkr\u00e9tn\u011b dob\u0159e nastavit, aby proces p\u0159echodu na Kubernetes nebyl p\u0159\u00edli\u0161 bolestiv\u00fd. <\/p>\n<p><\/p>\n<p>N\u011bkter\u00e9 d\u011btsk\u00e9 nemoci a tak\u00e9 n\u011bjak\u00e9 jednoduch\u00e9 v\u011bci, a dokonce i ty slo\u017eit\u011bj\u0161\u00ed, se daj\u00ed zjistit p\u0159edev\u0161\u00edm u n\u00e1s, a vyhnout se tak vlastn\u00edm p\u0159ek\u00e1\u017ek\u00e1m a bolesti. <\/p>\n<p><\/p>\n<p>Mnoho spole\u010dnost\u00ed pro\u0161lo cestou, kdy nejprve m\u011bla n\u011bjakou jednoduchou infrastrukturu bez kontejnerizace. Pot\u00e9 p\u0159e\u0161ly na to, \u017ee u\u017e bylo obt\u00ed\u017en\u00e9 s t\u00edm v\u0161\u00edm spravovat, p\u0159e\u0161ly na dockery a v ur\u010dit\u00e9m okam\u017eiku dosp\u011bly do stavu, kdy v r\u00e1mci dockeru a toho, co nab\u00edz\u00ed, se stalo t\u011bsno. A za\u010daly se d\u00edvat, co je kolem, jak\u00e9 syst\u00e9my \u0159e\u0161\u00ed tyto probl\u00e9my, a konkr\u00e9tn\u011b Kubernetes \u2013 to je jeden z t\u011bch syst\u00e9m\u016f, kter\u00e9 umo\u017e\u0148uj\u00ed \u0159e\u0161it probl\u00e9my, kdy\u017e ve \u010dist\u00e9m dockeru je t\u011bsno a chyb\u00ed funk\u010dnost. To je dobr\u00fd p\u0159\u00edpad, kdy lid\u00e9 postupuj\u00ed shora dol\u016f, ch\u00e1pou, \u017ee t\u00e9to technologii u\u017e je m\u00e1lo a p\u0159ech\u00e1zej\u00ed na dal\u0161\u00ed \u00farove\u0148. Pou\u017eili n\u011bco, znovu je toho m\u00e1lo \u2014 a jdou d\u00e1l. <\/p>\n<p><\/p>\n<p>To je v\u011bdom\u00e1 volba \u2014 a to je skv\u011bl\u00e9.<\/p>\n<p><\/p>\n<p>Vid\u00edm, \u017ee m\u00e1me velmi kr\u00e1sn\u011b vybudovan\u00fd syst\u00e9m, nap\u0159\u00edklad, <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/4hpuGw\">kurz o dockeru<\/a><\/noindex>, dokonce i na videokurzy. Pot\u00e9 po dockeru n\u00e1sleduje <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/emCKKQ\">z\u00e1kladn\u00ed Kubernetes<\/a><\/noindex>, pak <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/nsuw3Q\">Mega Kubernetes<\/a><\/noindex>, pak <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/XTIr2w\">Ceph<\/a><\/noindex>. V\u0161echno se logicky skl\u00e1d\u00e1 \u2014 \u010dlov\u011bk proch\u00e1z\u00ed a dost\u00e1v\u00e1 kompletn\u00ed profesi.<\/p>\n<p><\/p>\n<p>V z\u00e1sad\u011b sada kurz\u016f pokr\u00fdv\u00e1 opravdu hodn\u011b sou\u010dasn\u00fdch p\u0159\u00edpad\u016f. Existuj\u00ed tak\u00e9 oblasti, kter\u00e9 z\u016fst\u00e1vaj\u00ed \u0161edou z\u00f3nou, douf\u00e1m, \u017ee brzy vytvo\u0159\u00edme n\u011bjak\u00e9 kurzy, kter\u00e9 tyto \u0161ed\u00e9 oblasti pokryj\u00ed, konkr\u00e9tn\u011b v oblasti bezpe\u010dnosti n\u011bco vymysl\u00edme. Proto\u017ee to se st\u00e1v\u00e1 velmi aktu\u00e1ln\u00ed.<\/p>\n<p><\/p>\n<p>Stru\u010dn\u011b \u0159e\u010deno, m\u00e1me n\u011bjak\u00e9 \u0161ed\u00e9 oblasti, kter\u00e9 by bylo velmi dobr\u00e9 pokr\u00fdt, aby to byla opravdu \u00fapln\u00e1 p\u0159ehledn\u00e1 obraz \u2014 a lid\u00e9 mohli p\u0159ij\u00edt, a jak s\u00e1m Kubernetes p\u0159edstavuje stavebnici lega, z n\u00ed\u017e lze skl\u00e1dat r\u016fzn\u00e9 v\u011bci, pokud je\u0161t\u011b n\u011bco chyb\u00ed \u2014 doplnit, takto i s na\u0161imi kurzy, aby lid\u00e9 ch\u00e1pali, co pot\u0159ebuj\u00ed z toho sestavit, skl\u00e1dat jak\u00fdsi puzzle, jak\u00fdsi konstruktor z na\u0161ich kurz\u016f.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1kulis\u00ed. Jak vznikaj\u00ed kurzy?\" src=\"\/wp-content\/uploads\/2020\/07\/35b4d9f5e90d14df2799d73de65c9791.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Pokud si polo\u017e\u00edte spr\u00e1vnou a up\u0159\u00edmnou ot\u00e1zku: \"Komu by nyn\u00ed mohl b\u00fdt prosp\u011b\u0161n\u00fd aktivn\u00ed kurz Docker?\", pak: <\/p>\n<p><\/p>\n<ul>\n<li>Student\u016fm, kte\u0159\u00ed pr\u00e1v\u011b za\u010d\u00ednaj\u00ed pronikat do problematiky.<\/li>\n<li>Zam\u011bstnanc\u016fm testovac\u00edho odd\u011blen\u00ed.<\/li>\n<li>Ve skute\u010dnosti existuje mnoho spole\u010dnost\u00ed, kde se st\u00e1le nedostalo na to, aby n\u011bkdo sly\u0161el o technologi\u00edch typu Docker, a v podstat\u011b nev\u00ed, jak je pou\u017e\u00edvat. A j\u00e1 v\u00edm o n\u011bkolika velk\u00fdch firm\u00e1ch v Petrohrad\u011b, kter\u00e9 se ji\u017e mnoho let zab\u00fdvaj\u00ed v\u00fdvojem, a st\u00e1le pou\u017e\u00edvaj\u00ed n\u011bjak\u00e9 star\u00e9 technologie, pokra\u010duj\u00ed t\u00edmto sm\u011brem. Pro takov\u00e9 spole\u010dnosti, pro in\u017een\u00fdry v t\u011bchto firm\u00e1ch, m\u016f\u017ee b\u00fdt tento kurz velmi zaj\u00edmav\u00fd, proto\u017ee jednak umo\u017e\u0148uje rychle se pono\u0159it do t\u00e9to technologie, a jednak jakmile se objev\u00ed n\u011bkolik in\u017een\u00fdr\u016f, kte\u0159\u00ed ch\u00e1pou, jak to funguje, mohou to p\u0159in\u00e9st do spole\u010dnosti a uvnit\u0159 spole\u010dnosti ji\u017e rozv\u00edjet tuto kulturu a sm\u011br.<\/li>\n<li>Podle m\u00e9ho n\u00e1zoru by tento kurz mohl b\u00fdt u\u017eite\u010dn\u00fd t\u011bm, kte\u0159\u00ed ji\u017e s Docketem pracovali, ale velmi m\u00e1lo a sp\u00ed\u0161e stylem \"ud\u011blej to jednou, ud\u011blej to dvakr\u00e1t\" \u2014 a nyn\u00ed se chystaj\u00ed n\u011bjak\u00fdm zp\u016fsobem interagovat se stejn\u00fdm Kubernetes, co\u017e na n\u011b klade ur\u010dit\u00e9 z\u00e1vazky. Pokud maj\u00ed jen velmi povrchn\u00ed znalosti o tom, co Docker je, jak ho spustit, ale nev\u00ed, jak to funguje uvnit\u0159, neznaj\u00ed nejlep\u0161\u00ed praxi, co s n\u00edm d\u011blat, a \u010deho se vyvarovat, pak je tento kurz skv\u011bl\u00fd pro systematizaci a prohlouben\u00ed znalost\u00ed. <\/li>\n<\/ul>\n<p><\/p>\n<p>Ale pokud va\u0161e znalosti jsou na \u00farovni: 'Nev\u00edm, jak spr\u00e1vn\u011b ps\u00e1t Docker soubory, p\u0159edstavuji si, co jsou namespaces, jak funguj\u00ed kontejnery, jak jsou skute\u010dn\u011b realizov\u00e1ny na \u00farovni opera\u010dn\u00edho syst\u00e9mu' \u2014 pak ur\u010dit\u011b nem\u00e1 smysl chodit k n\u00e1m, nov\u00e9ho se nic nenau\u010d\u00edte a bude to trochu smutn\u00e9 za vynalo\u017een\u00e9 pen\u00edze a \u010das.<\/p>\n<p><\/p>\n<p>Pokud bychom m\u011bli shrnout, jak\u00e9 v\u00fdhody m\u00e1 n\u00e1\u0161 kurz, tak: <\/p>\n<p><\/p>\n<ul>\n<li>sna\u017eili jsme se tento kurz vytvo\u0159it s dostate\u010dn\u00fdm mno\u017estv\u00edm praktick\u00fdch p\u0159\u00edpad\u016f, kter\u00e9 v\u00e1m umo\u017en\u00ed nejen pochopit teoretickou \u010d\u00e1st, kter\u00e1 existuje, ale tak\u00e9 zjistit, pro\u010d je to pro v\u00e1s d\u016fle\u017eit\u00e9 a jak to budete pou\u017e\u00edvat v budoucnu;<\/li>\n<li>Existuje n\u011bkolik sekc\u00ed, kter\u00e9 se jen z\u0159\u00eddka objevuj\u00ed \u2014 a obecn\u011b o nich nen\u00ed tolik materi\u00e1l\u016f. T\u00fdkaj\u00ed se interakce Dockeru s opera\u010dn\u00edm syst\u00e9mem, i kdy\u017e ne \u00fapln\u011b tak. Jak\u00e9 mechanismy si Docker vzal z opera\u010dn\u00edho syst\u00e9mu, aby realizoval syst\u00e9m kontejnerizace \u2014 a to d\u00e1v\u00e1 hlub\u0161\u00ed porozum\u011bn\u00ed cel\u00e9mu probl\u00e9mu spou\u0161t\u011bn\u00ed kontejner\u016f v r\u00e1mci opera\u010dn\u00edho syst\u00e9mu Linux. Jak to funguje, jak to spolu interaguje uvnit\u0159 opera\u010dn\u00edho syst\u00e9mu, venku a tak d\u00e1le. <\/li>\n<\/ul>\n<p><\/p>\n<p>To je takov\u00fd opravdu hlubok\u00fd pohled, kter\u00fd se objevuje jen z\u0159\u00eddka, a p\u0159itom, podle m\u00e9ho n\u00e1zoru, je to velmi d\u016fle\u017eit\u00e9. Pokud chcete skute\u010dn\u011b dob\u0159e porozum\u011bt jak\u00e9koliv technologii a m\u00edt p\u0159edstavu, co od n\u00ed o\u010dek\u00e1vat, mus\u00edte m\u00edt alespo\u0148 obecnou p\u0159edstavu o tom, jak funguje na n\u00edzk\u00e9 \u00farovni.<\/p>\n<p><\/p>\n<p>n\u00e1\u0161 kurz ukazuje a vysv\u011btluje, jak to funguje z pohledu opera\u010dn\u00edho syst\u00e9mu. Na jedn\u00e9 stran\u011b v\u0161echny syst\u00e9my kontejnerizace pou\u017e\u00edvaj\u00ed stejn\u00e9 mechanismy opera\u010dn\u00edho syst\u00e9mu. Na stran\u011b druh\u00e9 berou to, co ji\u017e v opera\u010dn\u00edm syst\u00e9mu Linux existuje, jako Docker. Jin\u00e9 syst\u00e9my kontejnerizace nevymyslely nic nov\u00e9ho \u2014 vzaly to, co ji\u017e existuje v Linuxu, a napsaly prost\u011b pohodln\u00fd obal, kter\u00fd umo\u017e\u0148uje to rychle vyvol\u00e1vat, spou\u0161t\u011bt nebo s t\u00edm jinak interagovat. Ten stejn\u00fd Docker \u2013 to nen\u00ed moc velk\u00e1 mezivrstva mezi opera\u010dn\u00edm syst\u00e9mem a p\u0159\u00edkazov\u00fdm \u0159\u00e1dkem, je to n\u011bjak\u00fd n\u00e1stroj, kter\u00fd umo\u017e\u0148uje nep\u0159episovat kilotuny p\u0159\u00edkaz\u016f nebo n\u011bjak\u00e9ho C-k\u00f3du, abyste vytvo\u0159ili kontejner, ale ud\u011blat to prost\u0159ednictv\u00edm zad\u00e1n\u00ed n\u011bkolika \u0159\u00e1dk\u016f v termin\u00e1lu. <\/p>\n<p><\/p>\n<p>A k tomu nav\u00edc, pokud mluv\u00edme pr\u00e1v\u011b o Dockeru, co skute\u010dn\u011b p\u0159inesl do sv\u011bta IT \u2014 to jsou standardy. Jak by m\u011blo b\u00fdt spu\u0161t\u011bno aplikace, jak by m\u011blo fungovat, jak\u00e9 jsou po\u017eadavky na logy, jak\u00e9 jsou po\u017eadavky na \u0161k\u00e1lov\u00e1n\u00ed, konfiguraci samotn\u00e9 aplikace. <\/p>\n<p><\/p>\n<p>V mnoha ohledech je Docker o standardech. <\/p>\n<p><\/p>\n<p>Standardy se tak\u00e9 p\u0159esouvaj\u00ed do Kubernetes \u2014 a tam jsou p\u0159esn\u011b ty sam\u00e9 standardy, pokud um\u00edte dob\u0159e spou\u0161t\u011bt svou aplikaci v Dockeru, tak na 99 % bude tak\u00e9 dob\u0159e fungovat v r\u00e1mci Kubernetes.<\/p>\n<p><\/p>\n<p>Pokud v\u00e1s zaj\u00edmalo nejen to, jak byl kurz Docker vytvo\u0159en, ale i dal\u0161\u00ed kurzy, a tak\u00e9 v\u00e1s zaujal samotn\u00fd kurz z praktick\u00e9ho hlediska, pak <noindex><a rel=\"nofollow\" href=\"http:\/\/to.slurm.io\/4hpuGw\">Je\u0161t\u011b m\u00e1te \u010das po\u0159\u00eddit si ho se slevou p\u0159edobjedn\u00e1vky 5000 korun do 30. \u010dervence.<\/a><\/noindex><\/p>\n<p><\/p>\n<p>Budeme r\u00e1di, kdy\u017e v\u00e1s uvid\u00edme!<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/512268\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0423\u0447\u0430\u0441\u0442\u043d\u0438\u043a \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442 \u043d\u0430 \u043a\u0443\u0440\u0441 \u0438\u043b\u0438 \u0438\u043d\u0442\u0435\u043d\u0441\u0438\u0432. \u0412\u0438\u0434\u0438\u0442 \u0441\u0442\u0440\u043e\u0439\u043d\u044b\u0435 \u0440\u044f\u0434\u044b \u0442\u0435\u0445\u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u0430\u043a\u043a\u0443\u0440\u0430\u0442\u043d\u043e \u043f\u0440\u043e\u0432\u0435\u0434\u0451\u043d\u043d\u044b\u0435 \u0441\u0438\u043b\u043e\u0432\u044b\u0435 \u043a\u0430\u0431\u0435\u043b\u0438, \u0448\u0430\u0445\u043c\u0430\u0442\u043d\u044b\u0439 \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u043b\u0435\u043a\u0446\u0438\u043e\u043d\u043d\u043e\u0433\u043e \u0437\u0430\u043b\u0430, \u044f\u0440\u043a\u0438\u0435 \u043a\u0430\u0440\u0442\u0438\u043d\u043a\u0438 \u0438 \u0441\u0445\u0435\u043c\u044b \u0441\u043b\u0430\u0439\u0434\u043e\u0432. \u0421\u043f\u0438\u043a\u0435\u0440\u044b \u0441 \u0448\u0443\u0442\u043a\u0430\u043c\u0438 \u0438 \u0443\u043b\u044b\u0431\u043a\u0430\u043c\u0438 \u0432\u044b\u0434\u0430\u044e\u0442\u0441\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0442\u0430\u043a, \u0447\u0442\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0443\u0441\u043f\u0435\u0432\u0430\u0439 \u0432\u043d\u0438\u043a\u0430\u0442\u044c. \u0421\u0442\u0435\u043d\u0434\u044b \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u044b, \u0437\u0430\u0434\u0430\u0447\u0438 \u043f\u043e \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u043e\u0442\u043b\u0435\u0442\u0430\u044e\u0442 \u043e\u0442 \u043f\u0430\u043b\u044c\u0446\u0435\u0432, \u0440\u0430\u0437\u0432\u0435 \u0447\u0442\u043e \u043f\u043e\u0440\u043e\u0439 \u043d\u0443\u0436\u043d\u0430 \u043f\u043e\u043c\u043e\u0449\u044c \u0442\u0435\u0445. \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438. \u0410 \u0435\u0449\u0451 \u043a\u043e\u0444\u0435\u0431\u0440\u0435\u0439\u043a\u0438 \u0441 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":89806,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-89805","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 - 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