{"id":56260,"date":"2020-02-08T00:00:00","date_gmt":"2020-02-07T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com"},"modified":"2020-02-18T14:04:30","modified_gmt":"2020-02-18T11:04:30","slug":"slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com","title":{"rendered":"SRE Slurm. Nep\u0159etr\u017eit\u00fd experiment s odborn\u00edky z Booking.com a Google.com","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00e1\u0161 t\u00fdm miluje experimenty. Ka\u017ed\u00fd Sl\u00f6rm nen\u00ed statick\u00e9 opakov\u00e1n\u00ed toho p\u0159edchoz\u00edho, ale uv\u011bdom\u011bn\u00ed si zku\u0161enost\u00ed a p\u0159echod od dobr\u00e9ho k lep\u0161\u00edmu. Ale s Sl\u00f6rmem SRE<\/a><\/noindex> jsme se rozhodli pou\u017e\u00edt zcela nov\u00fd form\u00e1t \u2014 poskytnout \u00fa\u010dastn\u00edk\u016fm podm\u00ednky, kter\u00e9 jsou co nejbl\u00ed\u017ee \"boji\u0161t\u011b\". <\/p>\n

<\/p>\n

Pokud bychom stru\u010dn\u011b popisovali, \u010demu jsme se v\u011bnovali na intenzivn\u00edm kurzu: \"Stav\u00edme, ni\u010d\u00edme, opravujeme,
\nstudujeme.\" SRE m\u00e1 malou hodnotu v hol\u00e9 teorii \u2014 jen praxe, skute\u010dn\u00e1 \u0159e\u0161en\u00ed, skute\u010dn\u00e9 probl\u00e9my. <\/p>\n

<\/p>\n

\u00da\u010dastn\u00edci byli rozd\u011bleni do t\u00fdm\u016f, aby \u017eiv\u00fd sout\u011b\u017en\u00ed duch nedovolil nikomu usnout nebo spustit \"Angry Birds\" na iPhonu podle p\u0159\u00edkladu Dmitrije Anatoljevi\u010de. <\/p>\n

<\/p>\n

Probl\u00e9my, chyby, bugy a \u00fakoly zaji\u0161\u0165ovali \u00fa\u010dastn\u00edk\u016fm \u010dty\u0159i mento\u0159i. Ivan Kruglov, hlavn\u00ed v\u00fdvoj\u00e1\u0159 v Booking.com (Nizozemsko). Ben Tyler, hlavn\u00ed v\u00fdvoj\u00e1\u0159 v Booking.com (USA). Eduard Medved\u011bv, CTO v Tungsten Labs (N\u011bmecko). Jevgenij Varavva, \u0161iroce zam\u011b\u0159en\u00fd v\u00fdvoj\u00e1\u0159 v Google (San Francisco).<\/p>\n

<\/p>\n

A nav\u00edc byli \u00fa\u010dastn\u00edci rozd\u011bleni do t\u00fdm\u016f \u2014 a vz\u00e1jemn\u011b soupe\u0159\u00ed. Zaj\u00edmav\u00e9? <\/p>\n

<\/p>\n

\"SRE
\nIvan, Ben, Eduard a Jevgenij se se v\u0159el\u00fdm pohledem d\u00edvaj\u00ed na chud\u00e1ky \u00fa\u010dastn\u00edky Sl\u00f6rmu SRE p\u0159ed za\u010d\u00e1tkem sout\u011b\u017ee.<\/em><\/p>\n

<\/p>\n

<\/a><\/noindex>Tak\u017ee \u00fakol: <\/p>\n

<\/p>\n

My, my, we will build a new world\u2026<\/strong><\/p>\n

<\/p>\n

Existuje webov\u00fd agreg\u00e1tor vstupenek do kina. Incidency vym\u00fd\u0161lej\u00ed mento\u0159i v p\u0159edem propracovan\u00e9m sc\u00e9n\u00e1\u0159i (i kdy\u017e nikdo nevylu\u010duje obzvl\u00e1\u0161\u0165 rafinovanou a z\u00e1ludnou improvizaci), funk\u010dnost webu se popisuje r\u016fzn\u00fdmi metrikami. Probl\u00e9my mohou b\u00fdt r\u016fznorod\u00e9: vstupenky do divadla \"Moulin Rouge\" se nena\u010d\u00edtaj\u00ed do datab\u00e1ze; plak\u00e1ty film\u016f a p\u0159edstaven\u00ed se na\u010d\u00edtaj\u00ed do datab\u00e1ze d\u00e9le ne\u017e 10 sekund; popis jednotliv\u00e9ho filmu se zasek\u00e1v\u00e1; 0,1 % objedn\u00e1vek kon\u010d\u00ed na ji\u017e rezervovan\u00fdch m\u00edstech; ob\u010das na sladk\u00e9 vypadne na minutu-dv\u011b syst\u00e9m zpracov\u00e1n\u00ed plateb. A mnoho, mnoho, mnoho nep\u0159\u00edjemn\u00e9ho, co m\u016f\u017ee na \u00fa\u010dastn\u00edka Sl\u00f6rmu SRE spadnout v jeho skute\u010dn\u00e9 pr\u00e1ci. <\/p>\n

<\/p>\n

\"SRE
\nJsme p\u0159ipraveni se vypo\u0159\u00e1dat se v\u0161\u00edm\u2026 a se v\u0161emi.<\/em><\/p>\n

<\/p>\n

Na\u0161e oce\u0148ovan\u00e9 webov\u00e9 str\u00e1nky se skl\u00e1daj\u00ed z n\u011bkolika mikroslu\u017eeb. Jejich \u00fakolem je agregace dat o p\u0159edstaven\u00edch, cen\u00e1ch a voln\u00fdch m\u00edstech ze v\u0161ech kin, ukazuj\u00ed upout\u00e1vky film\u016f, umo\u017e\u0148uj\u00ed v\u00fdb\u011br kina, p\u0159edstaven\u00ed, s\u00e1lu a m\u00edsta, rezervaci a platbu vstupenek. Obecn\u011b \u0159e\u010deno, v\u0161e, o \u010dem si m\u016f\u017ee div\u00e1k jen p\u0159\u00e1t. Jen\u017ee u\u017eivatel ani netu\u0161\u00ed, jak tit\u00e1nsk\u00fd boj o stabilitu a dostupnost webu se odehr\u00e1v\u00e1 uvnit\u0159. <\/p>\n

<\/p>\n

Pro web na intenzivn\u00edm kurzu jsme vytvo\u0159ili ukazatele SLO, SLI, SLA, vyvinuli architekturu a infrastrukturu, nasadili web, nastavili monitoring a alerting. A pak to za\u010dalo. <\/p>\n

\nSLO, SLI, SLA<\/b><\/p>\n

SLI - ukazatele \u00farovn\u011b slu\u017eby. SLO - c\u00edle \u00farovn\u011b slu\u017eby. SLA - dohody o \u00farovni slu\u017eby. <\/p>\n

SLA - term\u00edn metodologie ITIL, ozna\u010duj\u00edc\u00ed form\u00e1ln\u00ed smlouvu mezi z\u00e1kazn\u00edkem slu\u017eby a jej\u00edm poskytovatelem, kter\u00e1 obsahuje popis slu\u017eby, pr\u00e1va a povinnosti stran a, co je nejd\u016fle\u017eit\u011bj\u0161\u00ed, dohodnutou \u00farove\u0148 kvality poskytov\u00e1n\u00ed t\u00e9to slu\u017eby.<\/p>\n

SLO je c\u00edl \u00farovn\u011b slu\u017eby: c\u00edlov\u00e1 hodnota nebo rozsah hodnot pro \u00farove\u0148 slu\u017eby, kter\u00e1 se m\u011b\u0159\u00ed pomoc\u00ed SLI. Norm\u00e1ln\u00ed hodnotou pro SLO je \u201eSLI \u2264 c\u00edlov\u00e1 hodnota\u201c nebo \u201edoln\u00ed mez \u2264 SLI \u2264 horn\u00ed mez\u201c. <\/p>\n

SLI je ukazatel \u00farovn\u011b slu\u017eby - pe\u010dliv\u011b definovan\u00e9 kvantitativn\u00ed m\u011b\u0159en\u00ed jednoho z aspekt\u016f poskytovan\u00e9 \u00farovn\u011b slu\u017eby. Pro v\u011bt\u0161inu slu\u017eeb se jako kl\u00ed\u010dov\u00fd SLI pova\u017euje latence po\u017eadavku - kolik \u010dasu je pot\u0159eba k vr\u00e1cen\u00ed odpov\u011bdi na po\u017eadavek. Dal\u0161\u00ed b\u011b\u017en\u00e9 SLI zahrnuj\u00ed frekvenci chyb, \u010dasto vyj\u00e1d\u0159enou jako pod\u00edl v\u0161ech p\u0159ijat\u00fdch po\u017eadavk\u016f, a propustnost syst\u00e9mu, obvykle m\u011b\u0159enou v po\u017eadavc\u00edch za sekundu.<\/p><\/blockquote>\n

<\/p>\n

First of all, we will break the planes, and the girls, well, the girls later\u2026<\/strong><\/p>\n

<\/p>\n

Vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed faktory ji\u017e od prvn\u00edch minut za\u010daly \u201ekazit\u201c SLO. Na hlavu administr\u00e1tor\u016f se sesypalo v\u0161echno - jak chyby v\u00fdvoj\u00e1\u0159\u016f, tak selh\u00e1n\u00ed infrastruktury, n\u00e1val n\u00e1v\u0161t\u011bvn\u00edk\u016f a DDoS \u00fatoky. V\u0161e, co zhor\u0161uje SLO. <\/p>\n

<\/p>\n

\"SRE
\n\u201e- Draz\u00ed \u00fa\u010dastn\u00edci, sp\u011bch\u00e1m v\u00e1s pot\u011b\u0161it, nejprve se v\u00e1m zhrout\u00ed\u2026 v\u0161echno!\u201c<\/em><\/p>\n

<\/p>\n

B\u011bhem akce lekto\u0159i diskutovali o odolnosti, budgetu na chyby, praxi testov\u00e1n\u00ed, \u0159\u00edzen\u00ed p\u0159eru\u0161en\u00ed a prevenci provozn\u00ed z\u00e1t\u011b\u017ee.<\/p>\n

<\/p>\n

We are not engine drivers, we are not carpenters\u2026<\/strong><\/p>\n

<\/p>\n

\u00da\u010dastn\u00edci za\u010dali opravovat \u2013 nejd\u016fle\u017eit\u011bj\u0161\u00ed je pochopit, za co se chytit jako prvn\u00ed. <\/p>\n

<\/p>\n

\"SRE
\n\u201e- Pane Bo\u017ee, nikdy jsem nevid\u011bl, aby se to rozbilo takto, v takov\u00e9m stavu a v t\u00e9to pozici!\u201c<\/em><\/p>\n

<\/p>\n

Tak\u017ee do\u0161lo k hav\u00e1rii. Slu\u017eba zpracov\u00e1n\u00ed plateb selhala. Jak jednat, aby se co nejrychleji obnovila funk\u010dnost?<\/p>\n

<\/p>\n

\"SRE
\nOdborn\u00edci se s \u00fasm\u011bvem d\u00edvaj\u00ed na \u00fa\u010dastn\u00edky a p\u0159ipravuj\u00ed dal\u0161\u00ed z\u00e1ludnost.<\/em><\/p>\n

<\/p>\n

Ka\u017ed\u00fd t\u00fdm organizuje pr\u00e1ci skupiny na odstran\u011bn\u00ed hav\u00e1rie \u2013 zapojuj\u00ed kolegy, informuj\u00ed z\u00e1jmov\u00e9 strany. Z\u00e1rove\u0148 se stanovuj\u00ed priority. Tak se \u00fa\u010dastn\u00edci tr\u00e9novali pracovat pod tlakem v podm\u00ednk\u00e1ch extr\u00e9mn\u011b omezen\u00e9ho \u010dasu.<\/p>\n

<\/p>\n

\"SRE
\n\u201e- Co to za hr\u016fzu vylezlo?!\u201c<\/em><\/p>\n

<\/p>\n

Vyd\u00fdchli se\u2026 a dokon\u010dili cvi\u010den\u00ed.<\/strong><\/p>\n

<\/p>\n

Spolu se speakery po ka\u017ed\u00e9m vy\u0159e\u0161en\u00e9m probl\u00e9mu a do\u010dasn\u011b stabilizovan\u00e9 str\u00e1nce t\u00fdmy zkoumaly incidenty z pohledu SRE. Podrobn\u011b analyzovaly probl\u00e9my \u2013 p\u0159\u00ed\u010diny vzniku, pr\u016fb\u011bh odstran\u011bn\u00ed. Pot\u00e9 rozhodovaly jak t\u00fdmov\u011b, tak kolektivn\u011b o jejich dal\u0161\u00edm zamezen\u00ed: jak zlep\u0161it monitorov\u00e1n\u00ed, jak spr\u00e1vn\u011b zm\u011bnit architekturu, jak upravit p\u0159\u00edstup k v\u00fdvoji a provozu, jak korigovat sm\u011brnice. Speak\u0159i demonstrovali praxi prov\u00e1d\u011bn\u00ed post-mortem. <\/p>\n

<\/p>\n

\"SRE
\n\u201e- Kdo dal\u0161\u00ed chce utrpen\u00ed! \u2013 J\u00e1!\u201c<\/em><\/p>\n

<\/p>\n

Na elektronick\u00e9 tabuli byly p\u0159ehledn\u011b a jasn\u011b zaznamen\u00e1v\u00e1ny \u00fasp\u011bchy t\u00fdm\u016f. <\/p>\n

<\/p>\n

\"SRE<\/p>\n

<\/p>\n

Za prvn\u00ed m\u00edsta \u2013 odm\u011bna od zainteresovan\u00fdch stran.<\/p>\n

<\/p>\n

\"SRE<\/p>\n

Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041d\u0430\u0448\u0430 \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u043b\u044e\u0431\u0438\u0442 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u044b. \u041a\u0430\u0436\u0434\u044b\u0439 \u0421\u043b\u0451\u0440\u043c \u2014 \u044d\u0442\u043e \u043d\u0435 \u0441\u0442\u0430\u0442\u0438\u0447\u043d\u043e\u0435 \u043f\u043e\u0432\u0442\u043e\u0440\u0435\u043d\u0438\u0435 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0445, \u0430 \u043e\u0441\u043c\u044b\u0441\u043b\u0435\u043d\u0438\u0435 \u043e\u043f\u044b\u0442\u0430 \u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434 \u043e\u0442 \u0445\u043e\u0440\u043e\u0448\u0435\u0433\u043e \u043a \u043b\u0443\u0447\u0448\u0435\u043c\u0443. \u041d\u043e \u0441\u043e \u0421\u043b\u0451\u0440\u043c\u043e\u043c SRE \u043c\u044b \u0440\u0435\u0448\u0438\u043b\u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u0442\u044c \u0430\u0431\u0441\u043e\u043b\u044e\u0442\u043d\u043e \u043d\u043e\u0432\u044b\u0439 \u0444\u043e\u0440\u043c\u0430\u0442 \u2014 \u0434\u0430\u0442\u044c \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u044f, \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0451\u043d\u043d\u044b\u0435 \u043a \u00ab\u0431\u043e\u0435\u0432\u044b\u043c\u00bb. \u0415\u0441\u043b\u0438 \u043a\u0440\u0430\u0442\u043a\u043e \u043e\u0431\u0440\u0438\u0441\u043e\u0432\u0430\u0442\u044c, \u0447\u0435\u043c \u043c\u044b \u0437\u0430\u043d\u0438\u043c\u0430\u043b\u0438\u0441\u044c \u043d\u0430 \u0438\u043d\u0442\u0435\u043d\u0441\u0438\u0432\u0435: \u00ab\u0421\u0442\u0440\u043e\u0438\u043c, \u043b\u043e\u043c\u0430\u0435\u043c, \u0447\u0438\u043d\u0438\u043c, \u0438\u0437\u0443\u0447\u0430\u0435\u043c\u00bb. SRE \u043c\u0430\u043b\u043e \u0447\u0435\u0433\u043e \u0441\u0442\u043e\u0438\u0442 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-56260","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Sl\u00f6rm SRE. Nep\u0159etr\u017eit\u00fd experiment s odborn\u00edky z Booking.com a Google.com | ProHoster","description":"N\u00e1\u0161 t\u00fdm m\u00e1 r\u00e1d experimenty. 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