{"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\/et\/blog\/administrirovanie\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com","title":{"rendered":"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Meie meeskond armastab eksperimente. Iga Sl\u00f5rm ei ole staatiline kordus eelnevatest, vaid kogemuste m\u00f5testamine ja liikumine heast paremaks. Kuid <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/sre\">Sl\u00f5rm SRE<\/a><\/noindex> otsustasime rakendada t\u00e4iesti uut formaati \u2014 anda osalejatele tingimused, mis on v\u00f5imalikult l\u00e4hedased \u00ablahingutingimustele\u00bb. <\/p>\n<p><\/p>\n<p>Kuid l\u00fchidalt kokku v\u00f5ttes, millega me intensiivkursusel tegelesime: \u00abEhitus, purustamine, parandamine,<br \/>\nuurimine\u00bb. SRE-l ei ole suurt v\u00e4\u00e4rtust puhtas teoorias \u2014 ainult praktika, reaalsed lahendused, reaalsed probleemid. <\/p>\n<p><\/p>\n<p>Osalejad jagati meeskondadesse, et elav konkurentsi vaim ei laseks kellelgi magama j\u00e4\u00e4da v\u00f5i k\u00e4ivitada iPhone'is \u00abAngry Birds\u00bb, nagu Dmitri Anatoljevit\u0161 tegi. <\/p>\n<p><\/p>\n<p>Probleeme, t\u00f5rkeid, vigu ja \u00fclesandeid tagasid osalejatele neli mentorit. Ivan Kruglov, peaarendaja Booking.com'is (Holland). Ben Tyler, peaarendaja Booking.com'is (USA). Eduard Medvedev, CTO Tungsten Labs'is (Saksamaa). Jevgeni Varavva, laia profiiliga arendaja Google'is (San Francisco).<\/p>\n<p><\/p>\n<p>Ja osalejad on kaotatud meeskondadesse \u2014 ja v\u00f5istlevad \u00fcksteisega. Huvitav? <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/ebfaccd92a805f1dff89a20938e5dece.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Ivan, Ben, Eduard ja Jevgeni vaatavad heatahtlikult vaeseid Sl\u00f5rm SRE osalejaid enne v\u00f5istluse algust.<\/em><\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex>Nii et \u00fclesanne: <\/p>\n<p><\/p>\n<p><strong>Meie oma, me ehitame uue maailma\u2026<\/strong><\/p>\n<p><\/p>\n<p>On olemas kinopiletite agregaatveebileht. Intsidendid leiavad mentoreid eelnevalt v\u00e4ljat\u00f6\u00f6tatud stsenaariumis (kuigi keegi ei v\u00e4lista \u00fclimalt rafineeritud ja kurja improviseerimist), veebilehe t\u00f6\u00f6kindlust kirjeldatakse erinevate m\u00f5\u00f5dikute abil. Probleemid v\u00f5ivad olla v\u00e4ga erinevad: \u00abMoolen Rouge'i\u00bb teatri piletid ei lae andmebaasi; filmide ja etenduste plakatid laaditakse andmebaasi enam kui 10 sekundiga; \u00fche filmi kirjeldus hangub; 0,1% tellimustest j\u00f5uab juba reserveeritud kohtadele; makses\u00fcsteem katkeb perioodiliselt minutiks-kaheks. Ja palju-palju-palju ebameeldivat, mis v\u00f5ib Sl\u00f5rm SRE osalejale t\u00f5eliselt t\u00f6\u00f6le sattuvalt juhtuda. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/65b1acafbfa8a39fec6dfc40c16d594e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Oleme valmis k\u00f5igega\u2026 ja k\u00f5igitega toime tulema.<\/em><\/p>\n<p><\/p>\n<p>Meie vaevarikas veebisait koosneb mitmest mikroteenusest. Selle eesm\u00e4rk on koguda andmeid seansside, hindade ja vabade kohtade kohta k\u00f5igist kinodest, n\u00e4idata filmide reklaame, v\u00f5imaldada valida kino, seansi, saali ja koha ning broneerida ja maksta piletite eest. \u00dches\u00f5naga, k\u00f5ik, millest vaataja vaid unistada oskab. Ainult et kasutaja ei aimagi, milline titaaniline v\u00f5itlus stabiilsuse ja veebisaidi k\u00e4ttesaadavuse nimel k\u00e4ib selle sees. <\/p>\n<p><\/p>\n<p>Intensiivkursuse veebilehe jaoks m\u00e4\u00e4rasime SLO, SLI, SLA n\u00e4itajad, t\u00f6\u00f6tasime v\u00e4lja arhitektuuri ja infrastruktuuri, juurutame veebilehe, seadistame j\u00e4lgimise ja h\u00e4irete korraldamise. Ja siis algas. <\/p>\n<p>\n<b class=\"spoiler_title\">SLO, SLI, SLA<\/b><\/p>\n<blockquote><p>SLI \u2014 teenuse taseme n\u00e4itajad. SLO \u2014 teenuse taseme eesm\u00e4rgid. SLA \u2014 teenuse taseme kokkulepped. <\/p>\n<p>SLA \u2014 ITILi metoodikaTermin, mis t\u00e4histab ametlikku lepingut teenuse tellija ja tarnija vahel, mis sisaldab teenuse kirjelduse, osaliste \u00f5igusi ja kohustusi ning, mis k\u00f5ige t\u00e4htsam, kokku lepitud kvaliteeditase antud teenuse osutamisel.<\/p>\n<p>SLO \u2014 teenuse taseme eesm\u00e4rk: sihtv\u00e4\u00e4rtus v\u00f5i v\u00e4\u00e4rtuste vahemik teenuse taseme jaoks, mida m\u00f5\u00f5detakse SLI abil. Tavaline SLO v\u00e4\u00e4rtus on \u201eSLI \u2264 sihtv\u00e4\u00e4rtus\u201d v\u00f5i \u201emadalam piir \u2264 SLI \u2264 \u00fclemine piir\u201d. <\/p>\n<p>SLI on teenuse taseme n\u00e4itaja \u2014 hoolikalt m\u00e4\u00e4ratletud kvantitatiivne m\u00f5\u00f5t \u00fcksikasjadest, mis on seotud antud teenuse tasemega. Enamik teenuseid peavad v\u00f5tme SLI-na p\u00e4ringu viivitust \u2014 kui kaua aega kulub vastuse saamiseks p\u00e4ringule. Teised levinud SLI-d h\u00f5lmavad veakordade sagedust, mida sageli v\u00e4ljendatakse kui k\u00f5igi saadud p\u00e4ringute osakaalu, ja s\u00fcsteemi l\u00e4bilaskev\u00f5imet, mida m\u00f5\u00f5detakse tavaliselt p\u00e4ringute arvuna sekundis.<\/p><\/blockquote>\n<p><\/p>\n<p><strong>Esiteks l\u00f5hkume lennukid, aga t\u00fcdrukud, t\u00fcdrukud hiljem\u2026<\/strong><\/p>\n<p><\/p>\n<p>Sisemised ja v\u00e4lised tegurid hakkasid SLO-d \"rikkuva\" juba esimestest minutist. Administraatoreid tabas k\u00f5ik \u2014 nii arendajate vead kui infrastruktuuri t\u00f5rked, k\u00fclastajate vool ja DDoS-r\u00fcnded. K\u00f5ik, mis halvendab SLO-d. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/b40305470369f0a40692214fa9f68f2c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\"Kallid osalejad, olen r\u00f5\u00f5mus teid teavitada, et k\u00f5igepealt kukub teil \u2026 k\u00f5ik!\"<\/em><\/p>\n<p><\/p>\n<p>R\u00e4\u00e4giti nagu ikka resistentsusest, veabud\u017eetist, testimise praktikast, katkestuste ja operatiivkoormuse haldamisest.<\/p>\n<p><\/p>\n<p><strong>Me ei ole k\u00fctjad, ei ole puusepad\u2026<\/strong><\/p>\n<p><\/p>\n<p>Siin osalejad hakkasid remontima \u2014 peamine on m\u00f5ista, millega esimesena tegelema hakata. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/c55d8d81dd6c945e399c82e23708fc62.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Jumal, ma pole kunagi n\u00e4inud, et see nii katki l\u00e4heks, sellises seisus ja sellises asendis!\u00bb<\/em><\/p>\n<p><\/p>\n<p>Nii, \u00f5nnetus on juhtunud. Maksete t\u00f6\u00f6tlemise teenus on maas. Kuidas tegutseda, et taastada t\u00f6\u00f6v\u00f5ime v\u00f5imalikult kiiresti?<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/821795a5de152b7500c1b8a7bf08321d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Ekspertide s\u00f5bralik pilk osalejate poole valmistab uusi komplitseerivaid olukordi.<\/em><\/p>\n<p><\/p>\n<p>Iga meeskond korraldab rikke k\u00f5rvaldamise t\u00f6\u00f6d \u2014 kaasatakse kolleege, teavitatakse sidusr\u00fchmi. Samal ajal seatakse prioriteedid. Nii harjutasid osalejad t\u00f6\u00f6tama surve all \u00e4\u00e4rmiselt piiratud aja tingimustes.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/db5502dcf79f693895027d7185f37e79.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Mis see \u00f5udus n\u00fc\u00fcd on?!\u00bb<\/em><\/p>\n<p><\/p>\n<p><strong>Hingati s\u00fcgavalt v\u00e4lja\u2026 ja l\u00f5petati harjutus<\/strong><\/p>\n<p><\/p>\n<p>Koos esinejatega, p\u00e4rast iga lahendatud probleemi ja ajutiselt stabiliseeritud veebilehte, uurisid meeskonnad s\u00fcndmusi SRE vaatepunktist. Probleeme anal\u00fc\u00fcsiti detailideni \u2013 tekkep\u00f5hjused ja k\u00f5rvaldamise k\u00e4ik. P\u00e4rast seda langetati koos meeskondade kaupa ja kollektiivselt otsus nende edasise ennetamise kohta: kuidas parandada monitooringut, kuidas muudatusi arhitektuuris \u00f5igesti teha, kuidas kohandada l\u00e4henemist arendamisele ja k\u00e4itamisele, kuidas reguleerida protseduure. Esinejad demonstreerisid post-mortem l\u00e4biviimise praktikat. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/0574ff085c8d9c73c6ea84b52735cac1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Kes veel tahab piinlemist! \u2014 Mina!\u00bb<\/em><\/p>\n<p><\/p>\n<p>Elektroonilisel tablool fikseeriti meeskondade edusammud rangelt ja selgelt. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/033f5c167a26252b223d9ce172ced901.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Esimeste kohtade eest on auhind sidusr\u00fchmadelt.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sl\u00f6rm SRE. Puhas katsetamine ekspertide k\u00e4est Booking.com ja Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/9f0e0272bcbfc4f93ea4d83a520eed37.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/487110\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/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<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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.\" \/>\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\/et\/blog\/administrirovanie\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"et_EE\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0421\u043b\u0451\u0440\u043c SRE. \u0421\u043f\u043b\u043e\u0448\u043d\u043e\u0439 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442 c \u044d\u043a\u0441\u043f\u0435\u0440\u0442\u0430\u043c\u0438 \u0438\u0437 Booking.com \u0438 Google.com | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\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.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-02-07T21:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-02-18T11:04:30+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Sliurm SRE. 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