{"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\/ro\/blog\/administrirovanie\/slyorm-sre-sploshnoj-eksperiment-c-ekspertami-iz-booking-com-i-google-com","title":{"rendered":"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Echipa noastr\u0103 ador\u0103 experimentele. Fiecare Sloerm nu este o repetare static\u0103 a celor anterioare, ci o reflec\u021bie asupra experien\u021bei \u0219i o trecere de la bun la excelen\u021b\u0103. Dar cu <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/sre\">Sloerm SRE<\/a><\/noindex> am decis s\u0103 aplic\u0103m un format complet nou \u2014 s\u0103 oferim participan\u021bilor condi\u021bii c\u00e2t mai apropiate de cele \u201ede lupt\u0103\u201d. <\/p>\n<p><\/p>\n<p>Dac\u0103 trebuie s\u0103 rezum\u0103m ce am f\u0103cut \u00een timpul intensivelor: \u201eConstrui\u021bi, distruge\u021bi, repara\u021bi,<br \/>\n\u00eenv\u0103\u021ba\u021bi\u201d. SRE nu valoreaz\u0103 foarte mult \u00een teorie \u2014 doar practica, solu\u021biile reale, problemele reale. <\/p>\n<p><\/p>\n<p>Participan\u021bii au fost \u00eemp\u0103r\u021bi\u021bi \u00een echipe, astfel \u00eenc\u00e2t spiritul competi\u021bional energic s\u0103 nu permit\u0103 nim\u0103nui s\u0103 adorm\u0103 sau s\u0103 deschid\u0103 \u201eAngry Birds\u201d pe iPhone, asemenea lui Dmitri Anatolevici. <\/p>\n<p><\/p>\n<p>Problemele, bug-urile \u0219i sarcinile au fost asigurate participan\u021bilor de patru mentori. Ivan Kruglov, Principal Developer la Booking.com (Olanda). Ben Tyler, Principal Developer la Booking.com (SUA). Eduard Medvedev, CTO la Tungsten Labs (Germania). Evgheni Varavva, dezvoltator cu experien\u021b\u0103 divers\u0103 la Google (San Francisco).<\/p>\n<p><\/p>\n<p>\u0218i, pe deasupra, participan\u021bii au fost \u00eemp\u0103r\u021bi\u021bi \u00een echipe \u2014 \u0219i concureaz\u0103 \u00eentre ei. Interesant? <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/ebfaccd92a805f1dff89a20938e5dece.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Ivan, Ben, Eduard \u0219i Evgheni privesc cu un z\u00e2mbet prietenos asupra s\u0103racilor participan\u021bi la Sloerm SRE \u00eenainte de \u00eenceperea competi\u021biei.<\/em><\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex>A\u0219adar, sarcina este: <\/p>\n<p><\/p>\n<p><strong>Noi ne construim o lume nou\u0103&#8230;<\/strong><\/p>\n<p><\/p>\n<p>Exist\u0103 un site de agregare a biletelor la cinema. Incidentele sunt create de mentori \u00een conformitate cu un scenariu elaborat \u00een prealabil (de\u0219i nimeni nu exclude o improviza\u021bie sofisticat\u0103 \u0219i viclean\u0103), func\u021bionalitatea site-ului este descris\u0103 prin diverse metrice. Problemele pot varia: biletele teatrului \u201eMoulin Rouge\u201d nu se \u00eencarc\u0103 \u00een baza de date; afi\u0219ele filmelor \u0219i spectacolelor se \u00eencarc\u0103 \u00een baza de date \u00een mai mult de 10 secunde; descrierea unui film se blocheaz\u0103; 0,1% din comenzi ajung pe locurile deja rezervate; sistemul de procesare a pl\u0103\u021bilor se \u00eentrerupe periodic timp de un minut sau dou\u0103. \u0218i multe, multe, multe alte nepl\u0103ceri care pot c\u0103dea pe umerii participan\u021bilor la Sloerm SRE \u00een munca lor real\u0103. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/65b1acafbfa8a39fec6dfc40c16d594e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Suntem preg\u0103ti\u021bi s\u0103 facem fa\u021b\u0103 tuturor\u2026 \u0219i tuturor.<\/em><\/p>\n<p><\/p>\n<p>Sit-ul nostru, mult \u00eencercat, este format din mai multe microservicii. Sarcina sa este agregarea datelor despre sesiuni, pre\u021buri \u0219i locuri disponibile din toate cinematografiile, afi\u0219eaz\u0103 anun\u021buri despre filme, permite alegerea cinematografului, a sesiunii, a s\u0103lii \u0219i a locului, rezervarea \u0219i plata biletelor. \u00cen general, tot ce poate visa un spectator. Totu\u0219i, utilizatorul nici m\u0103car nu b\u0103nuie\u0219te ce lupt\u0103 titanic\u0103 se desf\u0103\u0219oar\u0103 pentru stabilitatea \u0219i disponibilitatea site-ului. <\/p>\n<p><\/p>\n<p>Pentru site-ul \u00een intensificare, am formulat parametrii SLO, SLI, SLA, am dezvoltat arhitectura \u0219i infrastructura, am desf\u0103\u0219urat site-ul, am configurat monitorizarea \u0219i alertarea. \u0218i a \u00eenceput. <\/p>\n<p>\n<b class=\"spoiler_title\">SLO, SLI, SLA<\/b><\/p>\n<blockquote><p>SLI - indicatori de nivel de serviciu. SLO - obiective de nivel de serviciu. SLA - acorduri de nivel de serviciu. <\/p>\n<p>SLA este un termen din metodologia ITIL, care desemneaz\u0103 un contract formal \u00eentre clientul serviciului \u0219i furnizorul s\u0103u, con\u021bin\u00e2nd descrierea serviciului, drepturile \u0219i obliga\u021biile p\u0103r\u021bilor \u0219i, cel mai important, nivelul de calitate convenit pentru furnizarea acestui serviciu.<\/p>\n<p>SLO este obiectivul de nivel de serviciu: o valoare \u021bint\u0103 sau un interval de valori pentru nivelul de serviciu, care este m\u0103surat de SLI. Valoarea normal\u0103 pentru SLO este \u201eSLI \u2264 valoare \u021bint\u0103\u201d sau \u201elimita inferioar\u0103 \u2264 SLI \u2264 limita superioar\u0103\u201d. <\/p>\n<p>SLI este un indicator de nivel de serviciu - o m\u0103sur\u0103 cantitativ\u0103 bine definit\u0103 a unui aspect al nivelului de serviciu furnizat. Pentru cele mai multe servicii, SLI-ul cheie este timpul de r\u0103spuns \u2013 c\u00e2t timp este necesar pentru a returna un r\u0103spuns la o cerere. Alte SLI-uri comune includ rata de erori, adesea exprimat\u0103 ca propor\u021bie din toate cererile primite, \u0219i capacitatea sistemului, de obicei m\u0103surat\u0103 \u00een cereri pe secund\u0103.<\/p><\/blockquote>\n<p><\/p>\n<p><strong>Mai \u00eent\u00e2i vom distruge avioanele, iar fetele, fetele le vom lua mai t\u00e2rziu&#8230;<\/strong><\/p>\n<p><\/p>\n<p>Factorii interni \u0219i externi, \u00eenc\u0103 din primele minute, au \u00eenceput s\u0103 \u201estrice\u201d SLO. Administratorii au fost confrunta\u021bi cu tot - erori ale dezvoltatorilor, defec\u021biuni ale infrastructurii, un aflux de vizitatori \u0219i atacuri DDoS. Tot ceea ce \u00eembun\u0103t\u0103\u021be\u0219te SLO-ul. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/b40305470369f0a40692214fa9f68f2c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u201e- Dragi participan\u021bi, m\u0103 gr\u0103besc s\u0103 v\u0103 bucur, \u00een primul r\u00e2nd, va c\u0103dea\u2026 totul!\u201d<\/em><\/p>\n<p><\/p>\n<p>Pe parcurs, speakerii au discutat despre rezilien\u021b\u0103, bugetul de erori, practicile de testare, gestionarea \u00eentreruperilor \u0219i a sarcinii opera\u021bionale.<\/p>\n<p><\/p>\n<p><strong>Nu suntem c\u0103rbunari, nu suntem t\u00e2mplari&#8230;<\/strong><\/p>\n<p><\/p>\n<p>Aici participan\u021bii au \u00eenceput s\u0103 repare - este esen\u021bial s\u0103 \u00een\u021belegem cu ce s\u0103 \u00eencepem. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/c55d8d81dd6c945e399c82e23708fc62.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Dumnezeule, niciodat\u0103 nu am v\u0103zut ceva s\u0103 se strice a\u0219a, \u00een aceast\u0103 form\u0103 \u0219i \u00een aceast\u0103 pozi\u021bie!\u00bb<\/em><\/p>\n<p><\/p>\n<p>Deci, a avut loc un incident. Serviciul de procesare a pl\u0103\u021bilor a c\u0103zut. Cum s\u0103 ac\u021bionezi pentru a restabili func\u021bionalitatea \u00een cel mai scurt timp?<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/821795a5de152b7500c1b8a7bf08321d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Exper\u021bii, privindu-i bl\u00e2nd pe participan\u021bi, preg\u0103tesc urm\u0103toarea capcan\u0103.<\/em><\/p>\n<p><\/p>\n<p>Fiecare echip\u0103 \u00ee\u0219i organizeaz\u0103 munca grupului pentru eliminarea incidentului - implic\u0103 colegi, informeaz\u0103 p\u0103r\u021bile interesate. De asemenea, se stabilesc priorit\u0103\u021bi. Astfel, participan\u021bii s-au antrenat s\u0103 lucreze sub presiune \u00een condi\u021bii de timp extrem de limitat.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/db5502dcf79f693895027d7185f37e79.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Ce groz\u0103vie a ie\u0219it?!\u00bb<\/em><\/p>\n<p><\/p>\n<p><strong>Au respirat ad\u00e2nc... \u0219i au terminat exerci\u021biul.<\/strong><\/p>\n<p><\/p>\n<p>\u00cempreun\u0103 cu speakerii, dup\u0103 fiecare problem\u0103 rezolvat\u0103 \u0219i stabilizat temporar site-ul, echipele au analizat incidentele din perspectiva SRE. Au analizat \u00een detaliu problemele - cauzele apari\u021biei, desf\u0103\u0219urarea elimin\u0103rii. Dup\u0103 aceasta, at\u00e2t pe echipe, c\u00e2t \u0219i colectiv, au luat decizii \u00een privin\u021ba prevenirii lor ulterioare: cum s\u0103 \u00eembun\u0103t\u0103\u021beasc\u0103 monitorizarea, cum s\u0103 schimbe corect arhitectura, cum s\u0103 corecteze abord\u0103rile de dezvoltare \u0219i operare, cum s\u0103 ajusteze reglement\u0103rile. Speakerii au demonstrat practica desf\u0103\u0219ur\u0103rii post-mortem. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/0574ff085c8d9c73c6ea84b52735cac1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>\u00ab- Cine mai vrea suferin\u021b\u0103! \u2014 Eu!\u00bb<\/em><\/p>\n<p><\/p>\n<p>Pe tabela electronic\u0103, succesele echipelor erau fixate clar \u0219i riguros. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/033f5c167a26252b223d9ce172ced901.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Pentru primele locuri - un premiu din partea p\u0103r\u021bilor interesate.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"SLOERM SRE. Un experiment continu cu exper\u021bii de la Booking.com \u0219i Google.com\" src=\"\/wp-content\/uploads\/2020\/02\/9f0e0272bcbfc4f93ea4d83a520eed37.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Sursa: <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 5.0.2.1 - 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\/ro\/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) 5.0.2.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"ro_RO\" \/>\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\/ro\/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\udd47Slurm SRE. 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