{"id":54449,"date":"2019-12-26T00:00:00","date_gmt":"2019-12-25T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/kak-ya-nedelyu-byl-stazherom-sre-inzhenera-dezhurstvo-glazami-inzhenera-po"},"modified":"2020-02-18T14:02:27","modified_gmt":"2020-02-18T11:02:27","slug":"kak-ya-nedelyu-byl-stazherom-sre-inzhenera-dezhurstvo-glazami-inzhenera-po","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/kak-ya-nedelyu-byl-stazherom-sre-inzhenera-dezhurstvo-glazami-inzhenera-po","title":{"rendered":"Hogyan voltam SRE-m\u00e9rn\u00f6k gyakornok egy h\u00e9tig. Az \u00fcgyelet m\u00e9rn\u00f6ki szemmel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Hogyan voltam SRE-m\u00e9rn\u00f6k gyakornok egy h\u00e9tig. Az \u00fcgyelet m\u00e9rn\u00f6ki szemmel\" src=\"\/wp-content\/uploads\/2019\/12\/4ec4c4871f3d0d9a01b43035e6180d72.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h2 id=\"sre-inzhener---stazher\">SRE-m\u00e9rn\u00f6k \u2014 gyakornok<\/h2>\n<p><\/p>\n<p>El\u0151sz\u00f6r is, hadd mutatkozzak be. \u00c9n vagyok <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/tristan.read\">@tristan.read<\/a><\/noindex>, front-end m\u00e9rn\u00f6k a csoportban <noindex><a rel=\"nofollow\" href=\"https:\/\/about.gitlab.com\/handbook\/engineering\/development\/ops\/monitor\/health\/\">Monitor::Health<\/a><\/noindex> GitLab-r\u00f3l. A m\u00falt h\u00e9ten megtiszteltet\u00e9s volt, hogy gyakornok lehettem egyik \u00fcgyeletes SRE m\u00e9rn\u00f6k\u00fcnk mellett. A c\u00e9l az volt, hogy napi szinten figyeljem, hogyan reag\u00e1l az \u00fcgyeletes az esem\u00e9nyekre, \u00e9s val\u00f3s munkatapasztalatot szerezzek. Szeretn\u00e9nk, ha m\u00e9rn\u00f6keink jobban meg\u00e9rten\u00e9k a felhaszn\u00e1l\u00f3k sz\u00fcks\u00e9gleteit. <noindex><a rel=\"nofollow\" href=\"https:\/\/about.gitlab.com\/handbook\/product\/categories\/#health-group\">funkci\u00f3k<\/a><\/noindex> Monitor::Health.<\/p>\n<p><\/p>\n<p>Egy h\u00e9tig mindenhov\u00e1 k\u00f6vetnem kellett az SRE-m\u00e9rn\u00f6k\u00f6t. Teh\u00e1t jelen voltam az \u00fcgyelet \u00e1tad\u00e1s\u00e1n\u00e1l, figyeltem ugyanazokat a figyelmeztet\u00e9si csatorn\u00e1kat, \u00e9s reag\u00e1ltam az incidensekre, ha \u00e9s amikor azok t\u00f6rt\u00e9ntek.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2 id=\"incidenty\">Incidensek<\/h2>\n<p><\/p>\n<p>A h\u00e9t sor\u00e1n 2 incidens t\u00f6rt\u00e9nt.<\/p>\n<p><\/p>\n<h3 id=\"1-kriptomayner\">1. Kriptob\u00e1ny\u00e1sz<\/h3>\n<p><\/p>\n<p>Szerd\u00e1n a GitLab.com-on ugr\u00e1sszer\u0171 n\u00f6veked\u00e9st regisztr\u00e1ltak a GitLab Runner haszn\u00e1lat\u00e1ban, amelyet az ind\u00edtv\u00e1nyozott kriptovaluta-b\u00e1ny\u00e1szat k\u00eds\u00e9rletei okoztak. Az incidens megold\u00e1s\u00e1hoz saj\u00e1t megsz\u00fcntet\u0151 eszk\u00f6z\u00fcnket haszn\u00e1ltuk, amely le\u00e1ll\u00edtja a runner feladatokat \u00e9s elt\u00e1vol\u00edtja a kapcsol\u00f3d\u00f3 projektet \u00e9s fi\u00f3kot. <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.gitlab.com\/runner\/\">GitLab Runner<\/a><\/noindex>a, amelyet az futtat\u00f3 perceinek kriptovaluta b\u00e1ny\u00e1sz\u00e1s\u00e1ra tett k\u00eds\u00e9rletek okoztak. Az esetet saj\u00e1t zavar\u00f3eszk\u00f6z\u00fcnkkel kezelt\u00fck, amely le\u00e1ll\u00edtja a futtat\u00e1si feladatokat, \u00e9s t\u00f6rli a hozz\u00e1juk kapcsol\u00f3d\u00f3 projekteket \u00e9s fi\u00f3kokat. <\/p>\n<p><\/p>\n<p>2. Canary \u00e9s Main alkalmaz\u00e1sok teljes\u00edtm\u00e9nycs\u00f6kken\u00e9se<\/p>\n<p><\/p>\n<h3 id=\"2-degradaciya-proizvoditelnosti-prilozheniy-canary-i-main\">Az incidens \u00e1ltal\u00e1ban lassul\u00e1sokkal \u00e9s a hib\u00e1k fokozott gyakoris\u00e1g\u00e1val volt jellemz\u0151 a GitLab.com canary \u00e9s main webalkalmaz\u00e1sain\u00e1l. T\u00f6bb Apdex \u00e9rt\u00e9k is megs\u00e9rt\u0151d\u00f6tt.<\/h3>\n<p><\/p>\n<p>Nyitott incidens feladat:<\/p>\n<p><\/p>\n<p>Kulcsfontoss\u00e1g\u00fa meg\u00e1llap\u00edt\u00e1sok <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/gitlab-com\/gl-infra\/production\/issues\/1442\">https:\/\/gitlab.com\/gitlab-com\/gl-infra\/production\/issues\/1442<\/a><\/noindex><\/p>\n<p><\/p>\n<h2 id=\"klyuchevye-vyvody\">\u00cdme n\u00e9h\u00e1ny l\u00e9nyeges pont, amit megtanultam az \u00fcgyelet egy hete alatt.<\/h2>\n<p><\/p>\n<p>1. A figyelmeztet\u00e9sek a leg\u00e9rt\u00e9kesebbek, amikor elt\u00e9r\u00e9seket r\u00f6gz\u00edtenek.<\/p>\n<p><\/p>\n<h3 id=\"1-opovescheniya-naibolee-polezny-kogda-zasekayut-otkloneniya-ot-normy\">A figyelmeztet\u00e9seket t\u00f6bb t\u00edpusra lehet osztani:<\/h3>\n<p><\/p>\n<p>Azokon a figyelmeztet\u00e9seken, amelyek egy adott k\u00fcsz\u00f6b\u00e9rt\u00e9kre \u00e9p\u00edtenek, mint p\u00e9ld\u00e1ul \u201et\u00f6rt\u00e9nt 10 5xx hiba m\u00e1sodpercenk\u00e9nt\u201d.<\/p>\n<p><\/p>\n<ul>\n<li>Riaszt\u00e1sok, amelyek egy adott k\u00fcsz\u00f6b\u00e9rt\u00e9ken alapulnak, mint p\u00e9ld\u00e1ul \u201e10 5xx hiba t\u00f6rt\u00e9nt m\u00e1sodpercenk\u00e9nt\u201d.<\/li>\n<li>Riaszt\u00e1sok, ahol a k\u00fcsz\u00f6b egy sz\u00e1zal\u00e9kos \u00e9rt\u00e9k, mint p\u00e9ld\u00e1ul \u201e5xx hib\u00e1k gyakoris\u00e1ga 10% az \u00f6sszes k\u00e9relemhez k\u00e9pest egy adott id\u0151szakban\u201d.<\/li>\n<li>Riaszt\u00e1sok, amelyek a t\u00f6rt\u00e9neti \u00e1tlag\u00e9rt\u00e9ken alapulnak, mint p\u00e9ld\u00e1ul \u201e5xx hib\u00e1k a 90. percentilisben\u201d.<\/li>\n<\/ul>\n<p><\/p>\n<p>2. Sz\u00e1mos figyelmeztet\u00e9st nem escal\u00e1lnak incidensekk\u00e9<\/p>\n<p><\/p>\n<h3 id=\"2-mnogie-opovescheniya-tak-i-ne-eskaliruyutsya-do-incidentov\">2. Sok \u00e9rtes\u00edt\u00e9s sosem ker\u00fcl eszkal\u00e1l\u00e1sra esem\u00e9nyekk\u00e9<\/h3>\n<p><\/p>\n<p>Az SRE m\u00e9rn\u00f6k\u00f6k folyamatos figyelmeztet\u00e9sekkel foglalkoznak, amelyek k\u00f6z\u00fcl sok val\u00f3j\u00e1ban nem kritikus.<\/p>\n<p><\/p>\n<p>Mi\u00e9rt ne korl\u00e1tozn\u00e1nk a figyelmeztet\u00e9seket csak az igaz\u00e1n fontosakra? Ezzel a megk\u00f6zel\u00edt\u00e9ssel azonban lehet, hogy nem ismerj\u00fck fel a korai t\u00fcneteket, amelyek h\u00f3k\u00e1sak\u00e9nt n\u0151hetnek egy val\u00f3di probl\u00e9m\u00e1v\u00e1, amely jelent\u0151s k\u00e1rt okozhat.<\/p>\n<p><\/p>\n<p>Az \u00fcgyeletes SRE feladata, hogy meghat\u00e1rozza, mely riaszt\u00e1sok jelentenek t\u00e9nyleg komoly probl\u00e9m\u00e1t, \u00e9s sz\u00fcks\u00e9ges-e azokat eszkal\u00e1lni, illetve foglalkozni vel\u00fck. Gyan\u00edtom, hogy ez a riaszt\u00e1sok rugalmass\u00e1g\u00e1nak hi\u00e1ny\u00e1b\u00f3l is ad\u00f3dik: jobb lenne, ha bevezetn\u00e9nek n\u00e9h\u00e1ny szintet vagy \u201eintelligens\u201d m\u00f3dszereket a riaszt\u00e1sok testreszab\u00e1s\u00e1ra a fent eml\u00edtett helyzetnek megfelel\u0151en.<\/p>\n<p><\/p>\n<p>Funkci\u00f3s aj\u00e1nl\u00e1s: <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/gitlab-org\/gitlab\/issues\/42633\">https:\/\/gitlab.com\/gitlab-org\/gitlab\/issues\/42633<\/a><\/noindex><\/p>\n<p><\/p>\n<h3 id=\"3-nashi-dezhurnye-sre-ispolzuyut-mnogo-instrumentov\">3. \u00dcgyeletes SRE m\u00e9rn\u00f6keink sok eszk\u00f6zt haszn\u00e1lnak<\/h3>\n<p><\/p>\n<p><strong>Bels\u0151:<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>GitLab infra projekt: itt tal\u00e1lhat\u00f3k a Runbookok, az \u00fcgyelet \u00e1tad\u00e1sa a m\u0171szakra\/hetente, \u00e9s az esem\u00e9nyek kezel\u00e9s\u00e9vel kapcsolatos feladatok.<\/li>\n<li>GitLab probl\u00e9m\u00e1k: a vizsg\u00e1latok, elemz\u00e9sek \u00e9s karbantart\u00e1sok szint\u00e9n nyomon k\u00f6vethet\u0151k a feladatokban.<\/li>\n<li>GitLab c\u00edmk\u00e9k: az automatiz\u00e1l\u00e1si feladatok bizonyos c\u00edmk\u00e9k alapj\u00e1n indulnak, amelyeket a botok k\u00f6vetnek nyomon a feladatok aktivit\u00e1s\u00e1val kapcsolatban.<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>K\u00fcls\u0151:<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>PagerDuty: figyelmeztet\u00e9sek<\/li>\n<li>Slack: itt \u00e9rkezik a PagerDuty\/AlertManager \u00fczenetek \u00e1raml\u00e1sa. Integr\u00e1ci\u00f3 a \/slack parancsokkal k\u00fcl\u00f6nb\u00f6z\u0151 feladatok v\u00e9grehajt\u00e1s\u00e1ra, p\u00e9ld\u00e1ul: figyelmeztet\u00e9s lez\u00e1r\u00e1sa vagy eszkal\u00e1l\u00e1s incidens\u00e9.<\/li>\n<li>Grafana: metrik\u00e1k vizualiz\u00e1l\u00e1sa a hossz\u00fa t\u00e1v\u00fa trendekre \u00f6sszpontos\u00edtva.<\/li>\n<li>Kibana: lehet\u0151s\u00e9get ad a napl\u00f3z\u00e1si vizualiz\u00e1ci\u00f3ra\/kutat\u00e1sra, lehet\u0151v\u00e9 t\u00e9ve a r\u00e9szletesebb vizsg\u00e1l\u00f3d\u00e1st bizonyos esem\u00e9nyekben.<\/li>\n<li>Zoom: folyamatosan m\u0171k\u00f6d\u0151 \u201emegbesz\u00e9l\u0151 szoba\u201d tal\u00e1lhat\u00f3 a Zoomon. Ez lehet\u0151v\u00e9 teszi az SRE m\u00e9rn\u00f6k\u00f6k sz\u00e1m\u00e1ra, hogy gyorsan megbesz\u00e9lj\u00e9k az esem\u00e9nyeket, an\u00e9lk\u00fcl, hogy \u00e9rt\u00e9kes id\u0151t vesztegetn\u00e9nek a szoba l\u00e9trehoz\u00e1s\u00e1ra \u00e9s a r\u00e9sztvev\u0151knek sz\u00f3l\u00f3 linkek elk\u00fcld\u00e9s\u00e9re.<\/li>\n<\/ul>\n<p><\/p>\n<p>\u00c9s m\u00e9g sok, sok m\u00e1s.<\/p>\n<p><\/p>\n<h3 id=\"4-monitoring-gitlabcom-pri-pomoschi-gitlab---eto-edinaya-tochka-otkaza\">4. GitLab.com fel\u00fcgyelete GitLab seg\u00edts\u00e9g\u00e9vel \u2014 ez az egypontos hibalehet\u0151s\u00e9g<\/h3>\n<p><\/p>\n<p>Ha a GitLab.com-on s\u00falyos szolg\u00e1ltat\u00e1smegszak\u00edt\u00e1s t\u00f6rt\u00e9nik, nem szeretn\u00e9nk, ha ez befoly\u00e1soln\u00e1 a probl\u00e9ma megold\u00e1s\u00e1ra val\u00f3 k\u00e9pess\u00e9g\u00fcnket. Ezt lehet kontroll\u00e1lni, ha elind\u00edtunk egy m\u00e1sodik GitLab p\u00e9ld\u00e1nyt a GitLab.com kezel\u00e9s\u00e9re. Val\u00f3j\u00e1ban ez m\u00e1r n\u00e1lunk m\u0171k\u00f6dik: <noindex><a rel=\"nofollow\" href=\"https:\/\/ops.gitlab.net\/\">https:\/\/ops.gitlab.net\/<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h3 id=\"5-neskolko-funkciy-kotorye-sleduet-rassmotret-k-dobavleniyu-v-gitlab\">5. N\u00e9h\u00e1ny funkci\u00f3, amelyet \u00e9rdemes megfontolni a GitLabhoz val\u00f3 hozz\u00e1ad\u00e1sra<\/h3>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/gitlab-org\/gitlab\/issues\/103531\">T\u00f6bbfelhaszn\u00e1l\u00f3s feladatok szerkeszt\u00e9se<\/a><\/noindex>, hasonl\u00f3an a Google Docs-hoz. Ez seg\u00edthetne az esem\u00e9nyekkel kapcsolatos incidensek kezel\u00e9s\u00e9ben, valamint a vizsg\u00e1lati feladatokban. Mindk\u00e9t esetben t\u00f6bb r\u00e9sztvev\u0151nek lehet sz\u00fcks\u00e9ge arra, hogy valamit val\u00f3s id\u0151ben hozz\u00e1adjon.<\/li>\n<li>T\u00f6bb webhook a feladatokhoz. Az a lehet\u0151s\u00e9g, hogy k\u00fcl\u00f6nf\u00e9le GitLab munkafolyamat l\u00e9p\u00e9seket ind\u00edtsunk bel\u00fclr\u0151l, seg\u00edthet cs\u00f6kkenteni a Slack integr\u00e1ci\u00f3kt\u00f3l val\u00f3 f\u00fcgg\u0151s\u00e9get. P\u00e9ld\u00e1ul a PagerDuty \u00e9rtes\u00edt\u00e9s\u00e9nek enged\u00e9lyez\u00e9se egy slash-parancs seg\u00edts\u00e9g\u00e9vel a GitLab feladatban.<br \/>\nZ\u00e1r\u00e1s<\/li>\n<\/ul>\n<p><\/p>\n<p>Az SRE m\u00e9rn\u00f6k\u00f6k sz\u00e1m\u00e1ra sok bonyodalommal kell megk\u00fczdeni\u00fck. J\u00f3 lenne l\u00e1tni t\u00f6bb GitLab term\u00e9ket ezeknek a probl\u00e9m\u00e1knak a megold\u00e1s\u00e1ban. M\u00e1r dolgozunk n\u00e9h\u00e1ny funkci\u00f3 hozz\u00e1ad\u00e1s\u00e1n, amely megk\u00f6nny\u00edti a fent eml\u00edtett munkafolyamatokat. A r\u00e9szletek el\u00e9rhet\u0151ek a <noindex><a rel=\"nofollow\" href=\"https:\/\/about.gitlab.com\/direction\/ops\/\">Ops Term\u00e9kv\u00edzi\u00f3 szakaszban<\/a><\/noindex>.<\/p>\n<p><\/p>\n<p>2020-ban b\u0151v\u00edtj\u00fck a csapatot, hogy \u00f6sszegy\u0171jts\u00fck ezeket a nagyszer\u0171 funkci\u00f3kat. Ha \u00e9rdekel, k\u00e9rlek, n\u00e9zd meg a <noindex><a rel=\"nofollow\" href=\"https:\/\/about.gitlab.com\/jobs\/apply\/\">\u00e1ll\u00e1saj\u00e1nlatokat<\/a><\/noindex>, \u00e9s ne habozz kapcsolatba l\u00e9pni a csapatunk b\u00e1rmely tagj\u00e1val b\u00e1rmilyen k\u00e9rd\u00e9ssel.<\/p>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/481912\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>SRE-\u0438\u043d\u0436\u0435\u043d\u0435\u0440 \u2014 \u0441\u0442\u0430\u0436\u0435\u0440 \u0414\u043b\u044f \u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044c\u0442\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u0442\u044c\u0441\u044f. \u042f \u2014 @tristan.read, \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434-\u0438\u043d\u0436\u0435\u043d\u0435\u0440 \u0432 \u0433\u0440\u0443\u043f\u043f\u0435 Monitor::Health GitLab&#8217;\u0430. \u041d\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u043d\u0435\u0434\u0435\u043b\u0435 \u043c\u043d\u0435 \u0432\u044b\u043f\u0430\u043b\u0430 \u0447\u0435\u0441\u0442\u044c \u043f\u043e\u0431\u044b\u0442\u044c \u0441\u0442\u0430\u0436\u0435\u0440\u043e\u043c \u0443 \u043e\u0434\u043d\u043e\u0433\u043e \u0438\u0437 \u043d\u0430\u0448\u0438\u0445 \u0434\u0435\u0436\u0443\u0440\u043d\u044b\u0445 SRE-\u0438\u043d\u0436\u0435\u043d\u0435\u0440\u043e\u0432. \u0426\u0435\u043b\u044c\u044e \u0431\u044b\u043b\u043e \u0435\u0436\u0435\u0434\u043d\u0435\u0432\u043d\u043e\u0435 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u0435 \u0437\u0430 \u0442\u0435\u043c, \u043a\u0430\u043a \u0434\u0435\u0436\u0443\u0440\u043d\u044b\u0439 \u0440\u0435\u0430\u0433\u0438\u0440\u0443\u0435\u0442 \u043d\u0430 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u044b, \u0438 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043e\u043f\u044b\u0442\u0430 \u0440\u0430\u0431\u043e\u0442\u044b. \u041d\u0430\u043c \u0431\u044b \u0445\u043e\u0442\u0435\u043b\u043e\u0441\u044c, \u0447\u0442\u043e\u0431\u044b \u043d\u0430\u0448\u0438 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u044b \u043b\u0443\u0447\u0448\u0435 \u043f\u043e\u043d\u0438\u043c\u0430\u043b\u0438 \u043f\u043e\u0442\u0440\u0435\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":54450,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-54449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- 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