{"id":34430,"date":"2019-10-31T21:58:16","date_gmt":"2019-10-31T18:58:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/pochemu-inzhenery-ne-zabotyatsya-o-monitoringe-prilozhenij\/"},"modified":"2019-10-31T21:58:16","modified_gmt":"2019-10-31T18:58:16","slug":"pochemu-inzhenery-ne-zabotyatsya-o-monitoringe-prilozhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/pochemu-inzhenery-ne-zabotyatsya-o-monitoringe-prilozhenij","title":{"rendered":"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Headset k\u00f5igile! S\u00f5brad, t\u00e4na j\u00e4tkame koolituskursusele p\u00fchendatud postituste seeriat <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/UfUA\/\">\u00abDevOps praktikad ja t\u00f6\u00f6riistad\u00bb<\/a><\/noindex>, sest uue grupi tunnid algavad juba j\u00e4rgmise n\u00e4dala l\u00f5pus. Nii et alustame!<\/p>\n<p><img decoding=\"async\" alt=\"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?\" src=\"\/wp-content\/uploads\/2019\/05\/4c148e64f6080a2c89fa8075d1e133a5.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nJ\u00e4lgimine on <b>lihtsalt<\/b>. See on tuntud fakt. K\u00e4ivitage Nagios, seadistage NRPE kaugs\u00fcsteemis, seadistage Nagios NRPE TCP pordile 5666 ja te ei ole enam j\u00e4lgimata.<\/p>\n<p>See on nii lihtne, et pole isegi huvitav. N\u00fc\u00fcd on teil p\u00f5hilised m\u00f5\u00f5dikud protsessori ajast, kettaalaste, m\u00e4lust, mis tulevad vaikimisi Nagiosesse ja NRPEsse. Kuid tegelikult ei ole see \u201ej\u00e4lgimine\u201d sellisel kujul. See on vaid algus.<\/p>\n<p>(Tavaliselt installitakse PNP4Nagios, RRDtool ja Thruk, seadistatakse teavitused Slackis ja minnakse otse nagiosexchange'i, kuid j\u00e4tame selle praegu k\u00f5rvale).<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><b>Hea j\u00e4lgimine<\/b> on tegelikult \u00fcsna keeruline, peate t\u00f5esti teadma rakenduse sisemust, mille \u00fcle te j\u00e4lgite.<\/p>\n<h2>Kas j\u00e4lgimine on keeruline?<\/h2>\n<p>\nIga server, olgu see Linux v\u00f5i Windows, teenib definitsioonilt mingit eesm\u00e4rki. Apache, Samba, Tomcat, failiserver, LDAP \u2014 k\u00f5ik need teenused on millegip\u00e4rast ainulaadsed \u00fches v\u00f5i mitmes aspektis. Igal teenusel on oma funktsioon ja omadused. On erinevaid viise m\u00f5\u00f5dikute, KPI-de (v\u00f5tme efektiivsuse n\u00e4itajate) hankimiseks, mis teile huvi pakuvad, kui server on koormuse all.<\/p>\n<p><img decoding=\"async\" alt=\"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?\" src=\"\/wp-content\/uploads\/2019\/05\/020d7043393b3f200316ad35fe8a8801.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Pilt autor <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/JKUTrJ4vK00?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Luke Chesser<\/a><\/noindex> . Tundub, et <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/search\/photos\/monitoring?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<br \/>\n<\/a><\/noindex><\/i><\/p>\n<p>(soovin, et mu armatuurlaud oleks maalitud neoonsiniste v\u00e4rvidega \u2014 unistavalt hingates \u2014\u2026 hmm\u2026)<\/p>\n<p>Igal teenusepakkujal, mis teenuseid pakub, peab olema mehanism m\u00f5\u00f5dikute kogumiseks. Apache'il on moodul <code>mod-status<\/code>, mis n\u00e4itab serveri oleku lehte. Nginx'il on <code>stub_status<\/code>. Tomcat'il on JMX v\u00f5i spetsiaalsed veebirakendused, mis n\u00e4itavad v\u00f5tme m\u00f5\u00f5dikuid. MySQL'is on k\u00e4sk \u201eshow global status\u201c jne.<br \/>\nAga miks arendajad ei integreeri selliseid mehhanisme rakendustesse, mida nad loovad?<\/p>\n<h2>Kas ainult arendajad teevad seda?<\/h2>\n<p>\nTeatud m\u00e4\u00e4ral \u00fcksk\u00f5iksus m\u00f5\u00f5dikute integreerimise osas ei piirdu ainult arendajatega. Olen t\u00f6\u00f6tanud ettev\u00f5tetes, kus arendati rakendusi Tomcat'i kasutades ja ei antud v\u00e4lja mingeid m\u00f5\u00f5dikuid, mingit teenuse tegevuse logi, v\u00e4lja arvatud Tomcat'i \u00fcldised t\u00f5rke logid. Teatud arendajad genereerivad k\u00fclluslikult logisid, mis ei t\u00e4henda s\u00fcsteemi administreerijale, kes peab neid kell 3:15 hommikul lugema, midagi.<\/p>\n<p><img decoding=\"async\" alt=\"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?\" src=\"\/wp-content\/uploads\/2019\/05\/35a97d70424bbc652f85a4b88a1392fe.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Pilt autor <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/1K9T5YiZ2WU?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Tim Gouw<\/a><\/noindex> . Tundub, et <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/search\/photos\/developers?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><\/noindex><\/i><\/p>\n<p>S\u00fcsteemi insenerid, kes v\u00f5imaldavad sellistel toodetel turule tulla, peavad samuti kandma teatud vastutust olukorra eest. V\u00e4hemalt m\u00f5ned s\u00fcsteemi insenerid ei leia aega ega tunne huvi t\u00e4henduslike m\u00f5\u00f5dikute saamiseks logidest, ilma konteksti ja v\u00f5imaluseta neid t\u00f5lgendada rakenduse aktiivsuse valguses. M\u00f5ned ei saa aru, millist kasu nad sellest saavad, v\u00e4lja arvatud n\u00e4itajad, mis n\u00e4itavad, et \"midagi on praegu (v\u00f5i peagi) valesti\".<\/p>\n<p>M\u00f5tlemise muutmine m\u00f5\u00f5dikute vajalikkuse osas peaks toimuma mitte ainult arendajate, vaid ka s\u00fcsteemi inseneride seas.<\/p>\n<p>Iga s\u00fcsteemi inseneri jaoks, kellele on vajalik mitte ainult reageerida kriitilistele s\u00fcndmustele, vaid ka tagada nende puudumine, on m\u00f5\u00f5dikute puudumine tavaliselt t\u00f5kkeks.<\/p>\n<p>Kuid s\u00fcsteemi insenerid ei kaeva tavaliselt koodi, teenides oma ettev\u00f5ttele raha. Neil on vaja juhtivaid arendajaid, kes m\u00f5istavad s\u00fcsteemi inseneride vastutuse t\u00e4htsust probleemide avastamisel, probleemide teadlikkuse t\u00f5stmisel ja sarnastel teemadel.<\/p>\n<h2>See devops asi<\/h2>\n<p>\nDevops mentaliteet kirjeldab arendajate (dev) ja opereerimise (ops) m\u00f5tlemise s\u00fcnergiat. Iga ettev\u00f5te, kes v\u00e4idab, et nad \"teevad devopsi\", peaks:<\/p>\n<ol>\n<li>\u00fctlema seda, mida nad t\u00f5en\u00e4oliselt ei tee (viide filmi \"Printsess-pruut\" meemile - \"Ma ei arva, et see t\u00e4hendab seda, mida sa arvad, et see t\u00e4hendab!\")<\/li>\n<li>soodustama pideva t\u00e4iustamise positsiooni.<\/li>\n<\/ol>\n<p>\nTe ei saa toodet t\u00e4iustada ja teada, et see on paranenud, kui te ei tea, kuidas see praegu t\u00f6\u00f6tab. Te ei saa teada, kuidas toode t\u00f6\u00f6tab, kui te ei m\u00f5ista, kuidas toimivad tema komponendid, teenused, millest ta s\u00f5ltub, tema peamised probleemid ja kitsaskohad.<br \/>\nKui te ei j\u00e4lgi potentsiaalselt kitsaskohti, ei saa te j\u00e4rgida \"Viie miks\" tehnikat postmortemi kirjutamisel. Te ei saa koguda k\u00f5ike \u00fchele ekraanile, et n\u00e4ha, kuidas toode t\u00f6\u00f6tab v\u00f5i teada, kuidas see n\u00e4eb v\u00e4lja \"normaalselt ja \u00f5nnelikult\".<\/p>\n<h2>Kallutamine vasakule, VASAKULE, MA K\u00c4SIN, VAALEEEEEE\u2014 <\/h2>\n<p>\nMinu jaoks on \u00fcks Devopsi v\u00f5tmeprintsiipidest \"Kallutamine vasakule\" (shift left). Kallutamine vasakule selles kontekstis t\u00e4hendab v\u00f5imaluse nihkumist (<b>mitte vastutust<\/b>, vaid mitte ainult v\u00f5imaluste) teha seda, millest tavaliselt hoolivad s\u00fcsteemiinsenerid, n\u00e4iteks luua j\u00f5udluse m\u00f5\u00f5dikuid, kasutada logisid t\u00f5husamalt jms, tarkvaraprogrammide kohaletoimetamise eluts\u00fckli (Software Delivery Life Cycle) alguses.<\/p>\n<p><img decoding=\"async\" alt=\"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?\" src=\"\/wp-content\/uploads\/2019\/05\/11d59b1a5dc14b88b7376accb5f7d686.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Pilt autor <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/tWjzmNXKup4?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">NESA by Makers<\/a><\/noindex> . Tundub, et <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/search\/photos\/software?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><\/noindex><\/i><\/p>\n<p>Tarkvaraarendajad peavad saama kasutada ja tundma ettev\u00f5tte j\u00e4lgimise t\u00f6\u00f6riistu, et realiseerida j\u00e4lgimist k\u00f5ikides selle vormides, m\u00f5\u00f5dikutena, logimisena, j\u00e4lgimisliidestena ja, mis k\u00f5ige t\u00e4htsam, <i>vaatama, kuidas nende toode tootmises t\u00f6\u00f6tab<\/i>. Te ei saa sundida arendajaid panustama aega ja energiat j\u00e4lgimisse, kui nad ei n\u00e4e m\u00f5\u00f5dikuid ja ei saa m\u00f5jutada, kuidas need v\u00e4lja n\u00e4evad, kuidas toote omanik tutvustab neid j\u00e4rgmises infokogumisel CTO-le jms.<\/p>\n<h2>L\u00fchidalt \u00f6eldes<\/h2>\n<p><\/p>\n<ol>\n<li>Tooge hobune vette. N\u00e4idake arendajatele, kui palju probleeme nad saavad enda jaoks v\u00e4ltida, aidake neil tuvastada \u00f5iged KPI-d ja m\u00f5\u00f5dikud oma rakenduste jaoks, et v\u00e4hendada toote omanikult tulevat karjumist, millele reageerib tehniline direktor (CTO). Tooge need valgusesse, \u00f5rnalt ja rahulikult. Kui see ei \u00f5nnestu, siis korruptseerige, \u00e4hvardage ja veenke kas neid v\u00f5i toote omaniku, et v\u00f5imalikult kiiresti rakendada nende m\u00f5\u00f5dikute hankimist rakendustest, ja siis joonistage diagrammid. See on keeruline, kuna seda ei peeta prioriteetseks ning toote arengukaardil on palju ootel projekte, mis toovad tulu. Seet\u00f5ttu vajate majandusuuringut, et \u00f5igustada aega ja vahendeid, mis kulutatakse j\u00e4lgimise rakendamiseks tootes.<\/li>\n<li>Ait\u00e4h s\u00fcsteemiinseneritele korraliku une nimel. N\u00e4idake neile, et \"v\u00e4ljalaskmis-checklisti\" rakendamine igasuguste v\u00e4ljaantavate toodete puhul on hea. Ja see, et k\u00f5ik tootmises olevad rakendused on m\u00f5\u00f5dikute kattega, aitab saavutada \u00f5iget und \u00f6\u00f6sel, v\u00f5imaldades arendajatel n\u00e4ha, mis ja kus ei t\u00f6\u00f6ta. Siiski on \u00f5ige viis \u00e4rritada ja h\u00e4irida iga arendajat, tooteomanikku ja tehnilist direktorit see, et takistada ja vastu seista. Selline k\u00e4itumine m\u00f5jutab iga toote v\u00e4ljalaskekuup\u00e4eva, kui oodata j\u00e4lle viimase minutini, seega viige j\u00e4lle vasakule ja kaasake need k\u00fcsimused projekti plaani niipea kui v\u00f5imalik. Kui vaja, siseneda toote\u00fcritustele. Kandke vale vuntse ja fetr v\u00f5i midagi sarnast, see ei petta kunagi. Teatage oma probleemidest, n\u00e4idake ilmseid eeliseid ja propageerige.<\/li>\n<li>Veenduge, et nii arendajad (dev) kui ka operatsioon (ops) m\u00f5istavad toote m\u00f5\u00f5dikute \u00fclemineku \"punasesse tsooni\" t\u00e4hendust ja tagaj\u00e4rgi. \u00c4rge j\u00e4tke operatsiooni ainukeseks toote t\u00f6\u00f6v\u00f5imekuse valvseks, veenduge, et arendajad osaleksid ka selles (#productsquads).<\/li>\n<li>Logid on suurep\u00e4rane asi, kuid m\u00f5\u00f5dikud ka. Koondage need ja \u00e4rge laske oma logidel muutuda pr\u00fcgi tohutuks, leegitsevaks kasutu palliks. Selgitage ja n\u00e4idake arendajatele, miks keegi peale nende ei saa aru nende logidest, n\u00e4idake neile, kuidas on n\u00e4ha kasutu logisid kella 3:15 hommikul.<\/li>\n<\/ol>\n<p>\n<img decoding=\"async\" alt=\"Miks insenerid ei hooli rakenduste j\u00e4lgimisest?\" src=\"\/wp-content\/uploads\/2019\/05\/e4c9a0523d1e85158174c2e0e2608efa.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nPilt autor <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/uulf3173LPU?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Marko Horvat<\/a><\/noindex> . Tundub, et <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/search\/photos\/logs?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><\/noindex><\/p>\n<p>Selleks on k\u00f5ik. Uus materjal ilmub j\u00e4rgmisel n\u00e4dalal. Kui soovite kursuse kohta rohkem teada, ootame teid <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/Ux8s\/\">avatud uste p\u00e4ev<\/a><\/noindex>, mis toimub juba esmasp\u00e4eval. Ja praegu ootame traditsiooniliselt teie kommentaare.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/otus\/blog\/453278\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u0441\u0435\u0445 \u0441 \u043f\u044f\u0442\u043d\u0438\u0446\u0435\u0439! \u0414\u0440\u0443\u0437\u044c\u044f, \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u043c\u044b \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u043c \u0441\u0435\u0440\u0438\u044e \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0439 \u043f\u043e\u0441\u0432\u044f\u0449\u0435\u043d\u043d\u044b\u0445 \u043a\u0443\u0440\u0441\u0443 \u00abDevOps \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0438 \u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b\u00bb, \u043f\u043e\u0442\u043e\u043c\u0443 \u043a\u0430\u043a \u0437\u0430\u043d\u044f\u0442\u0438\u044f \u0432 \u043d\u043e\u0432\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u0435 \u043f\u043e \u043a\u0443\u0440\u0441\u0443 \u0441\u0442\u0430\u0440\u0442\u0443\u044e\u0442 \u0443\u0436\u0435 \u0432 \u043a\u043e\u043d\u0446\u0435 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u043d\u0435\u0434\u0435\u043b\u0438. \u0418\u0442\u0430\u043a, \u043d\u0430\u0447\u043d\u0451\u043c! \u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u2014 \u044d\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e. \u042d\u0442\u043e \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u0444\u0430\u043a\u0442. \u041f\u043e\u0434\u043d\u0438\u043c\u0438\u0442\u0435 Nagios, \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u0435 NRPE \u043d\u0430 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u0442\u0435 Nagios \u043d\u0430 \u043f\u043e\u0440\u0442 NRPE TCP 5666 \u0438 \u0443 \u0432\u0430\u0441 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-34430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u0441\u0435\u0445 \u0441 \u043f\u044f\u0442\u043d\u0438\u0446\u0435\u0439!\" \/>\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\/pochemu-inzhenery-ne-zabotyatsya-o-monitoringe-prilozhenij\" \/>\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\u041f\u043e\u0447\u0435\u043c\u0443 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u044b \u043d\u0435 \u0437\u0430\u0431\u043e\u0442\u044f\u0442\u0441\u044f \u043e \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439? 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