{"id":55399,"date":"2020-01-19T00:00:00","date_gmt":"2020-01-18T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/slyorm-devops-luchshe-rabotayushhaya-sinitsa-za-3-dnya-chem-prekrasnyj-zhuravl-v-dalekom-budushhem"},"modified":"2020-02-18T14:03:30","modified_gmt":"2020-02-18T11:03:30","slug":"slyorm-devops-luchshe-rabotayushhaya-sinitsa-za-3-dnya-chem-prekrasnyj-zhuravl-v-dalekom-budushhem","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/slyorm-devops-luchshe-rabotayushhaya-sinitsa-za-3-dnya-chem-prekrasnyj-zhuravl-v-dalekom-budushhem","title":{"rendered":"Slurm DevOps - lep\u0161ie vrabec na 3 dni, ako kr\u00e1sny \u010dajka v \u010falekej bud\u00facnosti","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>M\u00e1m r\u00e1d projekty, kter\u00e9 trvaj\u00ed t\u00fdden, a projekty trvaj\u00edc\u00ed rok m\u011b d\u011bs\u00ed. V Agile se mi velmi l\u00edbila koncepce MVP a inkrementace, to je p\u0159esn\u011b to, co mi vyhovuje: vytvo\u0159it funk\u010dn\u00ed kus, implementovat ho a posunout se d\u00e1l.<\/p>\n<p><\/p>\n<p>Transformace DevOps, jak je diskutov\u00e1na v knih\u00e1ch a na konferenc\u00edch, je toti\u017e projekt trvaj\u00edc\u00ed rok. Nebo roky.<\/p>\n<p><\/p>\n<p>Sestavili jsme n\u00e1\u0161 kurz o DevOps v paradigmatismu \u201eMVP DevOps za jeden sprint\u201c a \u201ep\u0159ipravenost na inkrementy\u201c. A pokud bych to m\u011bl \u0159\u00edct lidmi, tak \u201eaby se \u00fa\u010dastn\u00edk po n\u00e1vratu mohl okam\u017eit\u011b n\u011bco implementovat a z\u00edskat prosp\u011bch\u201c.<\/p>\n<p><\/p>\n<p>MVP DevOps: v kurzu jsou n\u00e1stroje pro z\u00e1kladn\u00ed DevOps procesy. Nesna\u017eili jsme se zkoumat a porovnat v\u0161echny syst\u00e9my CI\/CD, ani hloub\u011bji odhalit p\u0159\u00edstup Infrastructure as Code. D\u00e1v\u00e1me jeden srozumiteln\u00fd stack: Gitlab CI\/CD, Ansible, Terraform a Packer, Molecule, Prometheus, EFK. Je mo\u017en\u00e9 p\u0159ij\u00edt z kurz\u016f, sestavit z u\u010debn\u00edch materi\u00e1l\u016f infrastrukturu pro pilotn\u00ed projekt a pracovat v n\u00ed.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm DevOps - lep\u0161ie vrabec na 3 dni, ako kr\u00e1sny \u010dajka v \u010falekej bud\u00facnosti\" src=\"\/wp-content\/uploads\/2020\/01\/a421d5a38fda6be2cbb2efcebf1aa7ef.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>P\u0159ipravenost na inkrementy: ka\u017ed\u00fd prvek poskytujeme s velk\u00fdm mno\u017estv\u00edm praxe a p\u0159\u00edklad\u016f. M\u016f\u017eete vz\u00edt jeden n\u00e1stroj a podle u\u010debn\u00edch pl\u00e1n\u016f se v\u011bnovat jeho implementaci. Nap\u0159\u00edklad napsat Ansible playbook pro rozd\u011blen\u00ed dev prost\u0159en\u00ed nebo p\u0159ipojit bota a spravovat <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> p\u0159es telefon. To znamen\u00e1, \u017ee za t\u00fdden z\u00edsk\u00e1te konkr\u00e9tn\u00ed praktick\u00fd v\u00fdsledek. A\u010dkoliv je tento v\u00fdsledek nekone\u010dn\u011b vzd\u00e1len od kompletn\u00ed transformace DevOps cel\u00e9 firmy, p\u0159esto existuje, je tady, funguje a p\u0159in\u00e1\u0161\u00ed prosp\u011bch.<\/p>\n<p><\/p>\n<h2 id=\"temy-slyorma-devops\">T\u00e9mata Sl\u00f6rma DevOps<\/h2>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 1: Nejlep\u0161\u00ed praktiky Git<\/strong> \u2014 hovo\u0159\u00ed sama za sebe.<br \/>\n<strong>T\u00e9ma \u010d. 2: Pr\u00e1ce s aplikac\u00ed z pohledu v\u00fdvoje<\/strong> \u2014 in\u017een\u00fdrovi pot\u0159ebn\u00e9 kompetence administr\u00e1tora a v\u00fdvoj\u00e1\u0159e, proto vysv\u011btlujeme administr\u00e1tor\u016fm v\u00fdvoj.<\/p>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 3: Z\u00e1klady CI\/CD<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>\u00davod do automatizace CI\/CD<\/li>\n<li>Z\u00e1klady pr\u00e1ce s Gitlab CI<\/li>\n<li>Nejlep\u0161\u00ed praktiky s gitlab-runner<\/li>\n<li>N\u00e1stroje bash, make, gradle jako sou\u010d\u00e1st CI\/CD a nejen to<\/li>\n<li>Docker jako zp\u016fsob, jak \u0159e\u0161it probl\u00e9my CI<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 4: Gitlab CI\/CD v produkci<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>Konkurence p\u0159i spou\u0161t\u011bn\u00ed job\u016f<\/li>\n<li>Kontrola a omezen\u00ed prov\u00e1d\u011bn\u00ed: only, when<\/li>\n<li>Pr\u00e1ce s artefakty<\/li>\n<li>\u0160ablony, includy a mikroservisy: zjednodu\u0161ujeme nasazen\u00ed<\/li>\n<\/ul>\n<p><\/p>\n<p>Seznamujeme studenty se z\u00e1kladn\u00edmi pojmy a koncepcemi CI\/CD a s n\u00e1stroji pro implementaci CI\/CD. V\u00fdsledkem je, \u017ee se student bude schopen samostatn\u011b rozhodnout pro spr\u00e1vn\u00fd designov\u00fd vzor CI\/CD a vhodn\u00fd implementa\u010dn\u00ed n\u00e1stroj.<\/p>\n<p><\/p>\n<p>Potom uk\u00e1\u017eeme implement\u00e1ciu CI\/CD v Gitlabe a preberieme nastavenie, pri\u010dom sa zameriame na pokro\u010dil\u00e9 pou\u017e\u00edvanie Gitlab CI. V\u00fdsledkom bude, \u017ee \u0161tudent si bude schopn\u00fd samostatne nastavi\u0165 Gitlab CI pre vlastn\u00e9 projekty.<\/p>\n<p><\/p>\n<p>V porovnan\u00ed s prv\u00fdm Sl\u00f6rmom DevOps sme te\u00f3riu skr\u00e1tili na polovicu (po hodine na t\u00e9mu), vzdali sme sa preh\u013eadu v\u0161etk\u00fdch syst\u00e9mov a zostali sme len pri Gitlab CI. Zamerali sme sa na prax a pridali mno\u017estvo najlep\u0161\u00edch prakt\u00edk.<\/p>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 5: Infrastrukt\u00fara ako k\u00f3d<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>IaC: pr\u00edstup k infra\u0161trukt\u00fare ako k\u00f3du<\/li>\n<li>Cloudov\u00ed poskytovatelia ako dod\u00e1vatelia infra\u0161trukt\u00fary <\/li>\n<li>N\u00e1stroje na inicializ\u00e1ciu syst\u00e9mov, zostavenie obrazov (packer) <\/li>\n<li>IaC na pr\u00edklade Terraform<\/li>\n<li>Ukladanie konfigur\u00e1ci\u00ed, spolupr\u00e1ca, automatiz\u00e1cia aplik\u00e1ci\u00ed <\/li>\n<li>Praxa vytv\u00e1rania Ansible playbookov <\/li>\n<li>Idempotentnos\u0165, deklarat\u00edvnos\u0165 <\/li>\n<li>IaC na pr\u00edklade Ansible<\/li>\n<\/ul>\n<p><\/p>\n<p>Skr\u00e1tili sme teoretick\u00fa \u010das\u0165 o UI a openstack cli a s\u00fastredili sme sa na prax.<br \/>\nPreberieme dva pr\u00edstupy IaC, pou\u017e\u00edvaj\u00fac t\u00fa ist\u00fa aplik\u00e1ciu, a uk\u00e1\u017eeme v\u00fdhody a nev\u00fdhody ka\u017ed\u00e9ho pr\u00edstupu. V\u00fdsledkom bude, \u017ee \u0161tudent pochop\u00ed, ktor\u00fd pr\u00edstup kde aplikova\u0165, a bude vedie\u0165 pracova\u0165 ako s Terraformom, tak s Ansible.<\/p>\n<p><\/p>\n<p>V t\u00e9me o Teraforme na praktick\u00fdch pr\u00edkladoch preberieme t\u00edmov\u00fa pr\u00e1cu a ukladanie stavu do datab\u00e1zy. Pri pr\u00e1ci s modulmi si \u0161tudent s\u00e1m nap\u00ed\u0161e a nastav\u00ed modul, nau\u010d\u00ed sa s n\u00edm pracova\u0165: op\u00e4tovne pou\u017e\u00edva\u0165, verzionova\u0165. Prid\u00e1me pr\u00e1cu s Consulom, uk\u00e1\u017eeme, v ktor\u00fdch pr\u00edpadoch je potrebn\u00fd a ako ho spr\u00e1vne pou\u017e\u00edva\u0165. <\/p>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 6: Testovanie infra\u0161trukt\u00fary<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>Zis\u0165ujeme, pre\u010do sa nep\u00ed\u0161u testy?<\/li>\n<li>Ak\u00e9 typy testov existuj\u00fa v IaC?<\/li>\n<li>Statick\u00e9 analyz\u00e1tory, s\u00fa skuto\u010dne tak\u00e9 zbyto\u010dn\u00e9?<\/li>\n<li>Jednotkov\u00e9 testovanie IaC na pr\u00edklade ansible + molecule<\/li>\n<li>Testovanie ako s\u00fa\u010das\u0165 ci<\/li>\n<li>Testy na steroidoch alebo ako ne\u010daka\u0165 5 hod\u00edn na skon\u010denie testov pre IaC<\/li>\n<\/ul>\n<p><\/p>\n<p>Skr\u00e1tili sme teoretick\u00fa \u010das\u0165, menej rozpr\u00e1vania o Vagrant\/Molecule, viac praxe a priamo testovania, s d\u00f4razom na lintery a pr\u00e1cu s nimi. Pozrieme sa z h\u013eadiska CI<br \/>\nako ur\u00fdchli\u0165 testovanie. V praxi uvid\u00edme:<\/p>\n<p><\/p>\n<ul>\n<li>vlastn\u00fd linter, ktor\u00fd kontroluje pr\u00edtomnos\u0165 povinn\u00fdch premenn\u00fdch pre hostite\u013ea v z\u00e1vislosti od role;<\/li>\n<li>prid\u00e1vame do CI testovanie len t\u00fdch rol\u00ed, ktor\u00e9 sa zmenili, \u010do umo\u017e\u0148uje podstatne skr\u00e1ti\u0165 \u010das vykon\u00e1vania testov;<\/li>\n<li>prid\u00e1vame testovanie scen\u00e1rov. Nasadzujeme aplik\u00e1ciu cel\u00fa, ako integra\u010dn\u00fd test.<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 7: Monitoring infra\u0161trukt\u00fary s Prometheusom<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>Ako vybudova\u0165 zdrav\u00fd monitorovac\u00ed syst\u00e9m<\/li>\n<li>Monitoring ako n\u00e1stroj na anal\u00fdzu, efekt\u00edvnos\u0165 v\u00fdvoja a stabilitu k\u00f3du e\u0161te pred uveden\u00edm do produkcie<\/li>\n<li>Nastavenie prometheus + alertmanager + grafana<\/li>\n<li>Prech\u00e1dzame od monitorovania zdrojov k monitorovaniu aplik\u00e1ci\u00ed<\/li>\n<\/ul>\n<p><\/p>\n<p>Budeme sa ve\u013ea rozpr\u00e1va\u0165 o monitorovan\u00ed mikroservisov: ID po\u017eiadaviek, n\u00e1stroj na monitorovanie API. Bude ve\u013ea osved\u010den\u00fdch postupov a ve\u013ea samostatnej pr\u00e1ce.<\/p>\n<p><\/p>\n<p>Nap\u00ed\u0161eme svoj vlastn\u00fd exporter. Nastav\u00edme monitoring nielen produk\u010dnej infra\u0161trukt\u00fary a aplik\u00e1cie, ale aj buildov v Gitlabe. Pozrieme sa na \u0161tatistiky o ne\u00faspe\u0161n\u00fdch testoch. Uk\u00e1\u017eeme si v praxi, ako bude vyzera\u0165 monitoring bez healthchecku a s n\u00edm.<\/p>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 8. Logovanie aplik\u00e1cie pomocou ELK<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>Preh\u013ead Elastic a jeho n\u00e1strojov<\/li>\n<li>ELK\/Elastic Stack\/x-pack \u2014 \u010do je \u010do a ak\u00fd je rozdiel?<\/li>\n<li>Ak\u00e9 \u00falohy je mo\u017en\u00e9 rie\u0161i\u0165 pomocou ElasticSearch (vyh\u013ead\u00e1vanie, \u00falo\u017eisko, \u0161pecifik\u00e1 \u0161k\u00e1lovania, flexibilita nastavenia)<\/li>\n<li>Monitoring infra\u0161trukt\u00fary (x-pack)<\/li>\n<li>Logy kontajnerov a aplik\u00e1ci\u00ed (x-pack)<\/li>\n<li>Logovanie na pr\u00edklade na\u0161ej aplik\u00e1cie<\/li>\n<li>Osved\u010den\u00e9 postupy pr\u00e1ce s Kibana<\/li>\n<li>Open Distro for Elasticsearch od Amazonu<\/li>\n<\/ul>\n<p><\/p>\n<p>T\u00e9ma bola \u00faplne prepracovan\u00e1, vedie ju Eduard Medvedev, mnoh\u00ed ho videli na webin\u00e1ri o DevOps a SRE. Povie a uk\u00e1\u017ee osved\u010den\u00e9 postupy pr\u00e1ce s EFK na pr\u00edklade v\u00fdu\u010dbovej aplik\u00e1cie. Bude praktick\u00e1 pr\u00e1ca s Kibana.<\/p>\n<p><\/p>\n<p><strong>T\u00e9ma \u010d. 9: Automatiz\u00e1cia infra\u0161trukt\u00fary s ChatOps<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>DevOps a ChatOps<\/li>\n<li>ChatOps: siln\u00e9 str\u00e1nky<\/li>\n<li>Slack a alternat\u00edvy<\/li>\n<li>Boti pre ChatOps<\/li>\n<li>Hubot a alternat\u00edvy<\/li>\n<li>Bezpe\u010dnos\u0165<\/li>\n<li>Testovanie<\/li>\n<li>Najlep\u0161ie a najhor\u0161ie praktiky<\/li>\n<\/ul>\n<p><\/p>\n<p>V ChatOps sme pridali prax autentifik\u00e1cie s delite\u013en\u00fdmi pr\u00e1vami, potvrdenie akci\u00ed in\u00fdm pou\u017e\u00edvate\u013eom, te\u00f3riu a prax alternat\u00edvy Slack v podobe Mattermost, te\u00f3riu jednotkov\u00fdch a integra\u010dn\u00fdch testov pre bota.<\/p>\n<p><\/p>\n<p>Sl\u01ffrm DevOps za\u010d\u00edna 30. janu\u00e1ra. Cena \u2014 30 000.<br \/>\nPre t\u00fdch, ktor\u00ed do\u010d\u00edtali, z\u013eava 15% na kurz o DevOps s promo k\u00f3dom habrapost.<\/p>\n<p><\/p>\n<p>Registr\u00e1cia <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/devops\/?utm_source=habr%5E_%5Eamp%5E_%5Eutm_medium=post%5E_%5Eamp%5E_%5Eutm_campaign=devops%5E_%5Eamp%5E_%5Eutm_content=post_16-01-2020%5E_%5Eamp%5E_%5Eutm_term=skobin\">tu<\/a><\/noindex><\/p>\n<p><\/p>\n<p>Budem r\u00e1d, ak v\u00e1s uvid\u00edm na Sl\u01ffrmach!<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/484302\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u042f \u043b\u044e\u0431\u043b\u044e \u043f\u0440\u043e\u0435\u043a\u0442 \u0434\u043b\u0438\u043d\u043e\u0439 \u0432 \u043d\u0435\u0434\u0435\u043b\u044e, \u0438 \u043c\u0435\u043d\u044f \u043f\u0443\u0433\u0430\u044e\u0442 \u043f\u0440\u043e\u0435\u043a\u0442\u044b \u0434\u043b\u0438\u043d\u043e\u0439 \u0432 \u0433\u043e\u0434. \u0412 \u0430\u0434\u0436\u0430\u0439\u043b\u0435 \u043c\u043d\u0435 \u043e\u0447\u0435\u043d\u044c \u043f\u043e\u043d\u0440\u0430\u0432\u0438\u043b\u0430\u0441\u044c \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u044f MVP \u0438 \u0438\u043d\u043a\u0440\u0435\u043c\u0435\u043d\u0442\u0430, \u044d\u0442\u043e \u043f\u0440\u044f\u043c \u043c\u043e\u0435: \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u043e\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b\u0439 \u043a\u0443\u0441\u043e\u043a, \u0432\u043d\u0435\u0434\u0440\u0438\u0442\u044c \u0435\u0433\u043e \u0438 \u0434\u0432\u0438\u043d\u0443\u0442\u044c\u0441\u044f \u0434\u0430\u043b\u044c\u0448\u0435. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c DevOps-\u0442\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u0432 \u0442\u043e\u043c \u0432\u0438\u0434\u0435, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0435\u0435 \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u044e\u0442 \u0432 \u043a\u043d\u0438\u0433\u0430\u0445 \u0438 \u043d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u044f\u0445, \u044d\u0442\u043e \u043a\u0430\u043a \u0440\u0430\u0437 \u043f\u0440\u043e\u0435\u043a\u0442 \u0434\u043b\u0438\u043d\u043e\u0439 \u0432 \u0433\u043e\u0434. 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