{"id":35323,"date":"2019-10-31T22:03:38","date_gmt":"2019-10-31T19:03:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/slyorm-gusenitsa-prevratilas-v-babochku\/"},"modified":"2019-10-31T22:03:38","modified_gmt":"2019-10-31T19:03:38","slug":"slyorm-gusenitsa-prevratilas-v-babochku","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/slyorm-gusenitsa-prevratilas-v-babochku","title":{"rendered":"Slurm: omida s-a transformat \u00een fluture","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Slurm: omida s-a transformat \u00een fluture\" src=\"\/wp-content\/uploads\/2019\/06\/9067ea4d43f2c4f7fd0b472df28f59c8.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h2 id=\"tldr\">&lt;TL;DR&gt;<\/h2>\n<p><\/p>\n<ol>\n<li>Slurm permite cu adev\u0103rat s\u0103 intri \u00een tematica Kubernetes sau s\u0103-\u021bi \u00eembun\u0103t\u0103\u021be\u0219ti cuno\u0219tin\u021bele.<\/li>\n<li>Participan\u021bii sunt mul\u021bumi\u021bi. Cei care nu au \u00eenv\u0103\u021bat nimic nou sau nu \u0219i-au rezolvat problemele sunt doar c\u00e2\u021biva. Garantiile de returnare a banilor din prima zi (\u201eDac\u0103 sim\u021bi c\u0103 Slurm nu \u021bi se potrive\u0219te, \u00ee\u021bi vom returna \u00eentreaga valoare a biletului\u201d) au fost folosite doar de o persoan\u0103, care a spus c\u0103 \u0219i-a supraestimat abilit\u0103\u021bile.<\/li>\n<li>Urm\u0103torul Slurm va avea loc la \u00eenceputul lunii septembrie \u00een Sankt Petersburg. Selectel, sponsorul nostru permanent, ofer\u0103 nu doar cloud pentru standuri, ci \u0219i sala sa de conferin\u021be.<\/li>\n<li>Repet\u0103m Slurm de baz\u0103 (9-11 septembrie) \u0219i prezent\u0103m un nou program: Slurm DevOps (4-6 septembrie).<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2 id=\"chto-takoe-slyorm-i-kak-on-izmenilsya\">Ce este Slurm \u0219i cum s-a schimbat<\/h2>\n<p><\/p>\n<p>\u00cen urm\u0103 cu un an, ne-a venit ideea de a organiza cursuri de Kubernetes. \u00cen august '18 a avut loc primul Sl\u00f8rm: a fost dificil, cu prezent\u0103ri continue (c\u00e2nd prezentarea este \u00eembun\u0103t\u0103\u021bit\u0103 pe scen\u0103), \u0219i cu multe probleme cotidiene. Experien\u021bele ne unesc: participan\u021bii la primul Sl\u00f8rm, ca Fr\u0103\u021bia Inelului, comunic\u0103 \u0219i acum \u00eentre ei.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: omida s-a transformat \u00een fluture\" src=\"\/wp-content\/uploads\/2019\/06\/2a6d73eceb41a3c234a26e459cb168cd.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>A\u0219a ar\u0103ta Slurm-1<\/em><\/p>\n<p><\/p>\n<p>La primul Sl\u00f8rm a ap\u0103rut ideea de a organiza MegaSl\u00f8rm. Am \u00eentrebat oamenii ce subiecte \u00eei intereseaz\u0103 \u0219i \u00een octombrie am organizat un curs avansat \u201eLa cererea participan\u021bilor\u201d. A fost un eveniment interesant, dar de o singur\u0103 dat\u0103. P\u00e2n\u0103 \u00een mai '19 am preg\u0103tit un curs avansat adev\u0103rat, cu propria sa logic\u0103 \u0219i poveste interioar\u0103.<\/p>\n<p><\/p>\n<p>\u00cen decursul unui an, Slurm s-a transformat organiza\u021bional:<br \/>\n\u2014 Docker \u0219i Ansible au fost eliminate din programul principal \u0219i au fost f\u0103cute cursuri online separate.<br \/>\n\u2014 Am organizat suport tehnic care ajut\u0103 studen\u021bii s\u0103 rezolve problemele cu clusterele de studiu.<br \/>\n\u2014 Speakerii au beneficiat de suport metodologic.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: omida s-a transformat \u00een fluture\" src=\"\/wp-content\/uploads\/2019\/06\/df50b156ac07048fadb0d5fdee127ff3.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Echipa care a organizat Slurm-4<\/em><\/p>\n<p><\/p>\n<h2 id=\"otzyvy-uchastnikov\">Recenzia participan\u021bilor<\/h2>\n<p><\/p>\n<p>Am stabilit un nou record: 170 de participan\u021bi la Slurm de baz\u0103, 75 la MegaSlurm.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: omida s-a transformat \u00een fluture\" src=\"\/wp-content\/uploads\/2019\/06\/c38db60feaebc11a56fed6906f0ededa.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Slurm-4<br \/>\nFormularul de feedback a fost completat de 101 persoane din 170.<\/p>\n<p><\/p>\n<p>A devenit clar Kubernetes?<br \/>\n41 \u2014 \u00cenc\u0103 nu \u00een\u021beleg k8s, dar v\u0103d unde s\u0103 caut.<br \/>\n36 \u2014 \u00cenainte nu \u0219tiam de k8s, acum m-am l\u0103murit.<br \/>\n23 \u2014 \u0218tiam deja de k8s, acum \u0219tiu mai bine.<br \/>\n1 \u2014 Nu am \u00eenv\u0103\u021bat nimic nou.<br \/>\n0 \u2014 Nu am \u00een\u021beles nimic despre k8s. <\/p>\n<p><\/p>\n<p>Cum vi s-a p\u0103rut intensitatea Slurm-ului? <\/p>\n<p><\/p>\n<p>16 persoane consider\u0103 c\u0103 Slurm-ul este prea simplu \u0219i lent, iar 14 \u2014 c\u0103 este prea complicat \u0219i rapid. Celorlal\u021bi le vine perfect.<\/p>\n<p><\/p>\n<p>A\u021bi rezolvat problema cu care a\u021bi venit la Slurm? <\/p>\n<p><\/p>\n<p>90 \u2014 Da.<br \/>\n11 \u2014 Nu.<\/p>\n<p><\/p>\n<p>MegaSlurm<\/p>\n<p><\/p>\n<p>40 de persoane au completat formularul de feedback. 2 persoane au spus c\u0103 a fost prea simplu \u0219i lent. 1 persoan\u0103 nu a rezolvat problema pentru care a venit la Mega. Restul sunt bine.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/serveradmin.ru\/otzyv-o-slerm-kak-ya-prohodil-obuchenie-po-kubernetes\/\">Recenzie despre Slurm pe https:\/\/serveradmin.ru<\/a><\/noindex><\/p>\n<p><\/p>\n<h2 id=\"otzyvy-spikerov\">Recenziile speakerilor<\/h2>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: omida s-a transformat \u00een fluture\" src=\"\/wp-content\/uploads\/2019\/06\/cfbeb0b99d4c835bd1ab05925806c887.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Dac\u0103 la Slurm-ul din Sankt Petersburg \u00een februarie erau \u00een principal \u00eencep\u0103tori, la Slurm-ul din Moscova mul\u021bi oameni au \u00eencercat deja Kubernetes. Au fost multe \u00eentreb\u0103ri avansate care m-au f\u0103cut s\u0103 reflectez.<\/p>\n<p><\/p>\n<p>Dac\u0103 \u00een Petersburg \u00eentrebau c\u00e2nd vom publica fork-ul nostru kubespray, la Moscova d\u00e9j\u00e0 \u00eentrebau de ce oferim s\u0103 folosim fork-ul nostru \u0219i nu lu\u0103m originalul kubespray. Acesta este deja g\u00e2ndire critic\u0103 de la mid-level la senior.<\/p>\n<p><\/p>\n<p>Practicile au fost dificile, oamenii au f\u0103cut multe gre\u0219eli, \u0219i este perfect: trebuie s\u0103 te love\u0219ti de probleme \u00een timpul \u00eenv\u0103\u021b\u0103rii, nu \u00een lupt\u0103.<\/p>\n<p><\/p>\n<p>Ne-am confruntat \u00een mod regulat cu limite \u00een ob\u021binerea certificatelor, limite \u00een desc\u0103rc\u0103rile de pe Github etc. Aceasta este via\u021ba - am desf\u0103\u0219urat simultan \u00een cloud Selectel aproximativ 200 de clustere. Nimeni nu preg\u0103te\u0219te resursele \u0219i limitele pentru a\u0219a ceva. <\/p>\n<p><\/p>\n<h2 id=\"anons-slyorma-v-selectel\">Anun\u021b Slurm \u00een Selectel<\/h2>\n<p><\/p>\n<p>\u2192 <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/?utm_source=habr\">\u00censcriere la Slurm-5<\/a><\/noindex><br \/>\nPre\u021b: 25 000 \u20bd<\/p>\n<p>\n<b class=\"spoiler_title\">Program:<\/b><\/p>\n<p>Tema nr. 1: Introducere \u00een Kubernetes, componentele de baz\u0103<br \/>\n\u2014 Introducere \u00een tehnologia k8s. Descriere, aplicare, concepte<br \/>\n\u2014 Pod, ReplicaSet, Deployment, Service, Ingress, PV, PVC, ConfigMap, Secret<\/p>\n<p><\/p>\n<p>Tema nr. 2: Structura clusterului, componentele de baz\u0103, toleran\u021ba la erori, re\u021beaua k8s<br \/>\n\u2014 Structura clusterului, componentele de baz\u0103, toleran\u021ba la erori<br \/>\n\u2014 Re\u021beaua k8s<\/p>\n<p><\/p>\n<p>Tema nr. 3: Kubespray, configurarea \u0219i reglarea clusterului Kubernetes<br \/>\n\u2014 Kubespray, configurarea \u0219i reglarea clusterului Kubernetes<\/p>\n<p><\/p>\n<p>Tema nr. 4: Abstrac\u021bii avansate \u00een Kubernetes<br \/>\n\u2014 DaemonSet, StatefulSet, RBAC, Job, CronJob, Programarea Pod-urilor, InitContainer<\/p>\n<p><\/p>\n<p>Tema nr. 5: Publicarea serviciilor \u0219i aplica\u021biilor<br \/>\n\u2014 Prezentarea metodelor de publicare a serviciilor: NodePort vs LoadBalancer vs Ingress<br \/>\n\u2014 Ingress controller (Nginx): echilibrarea traficului de intrare<br \/>\n\u2014 Cert-manager: ob\u021binem automat certificate SSL\/TLS<\/p>\n<p><\/p>\n<p>Tema nr. 6: Introducere \u00een Helm<\/p>\n<p><\/p>\n<p>Tema nr. 7: Instalarea cert-manager<\/p>\n<p><\/p>\n<p>Tema nr. 8: Ceph: instalare \u00een modul \u00abf\u0103 ca mine\u00bb<\/p>\n<p><\/p>\n<p>Tema nr. 9: Logging \u0219i monitorizare<br \/>\n\u2014 Monitorizarea clusterului, Prometheus<br \/>\n\u2014 Logging-ul clusterului, Fluentd\/Elastic\/Kibana<\/p>\n<p><\/p>\n<p>Tema nr. 10: Actualiz\u0103ri ale clusterului<\/p>\n<p><\/p>\n<p>Tema nr. 11: Lucru practic, containerizarea aplica\u021biei \u0219i desf\u0103\u0219urarea \u00een cluster<\/p>\n<p><\/p>\n<p>Cursurile de Docker \u0219i Ansible pe stepik.org sunt incluse \u00een pre\u021b.<\/p>\n<p><\/p>\n<p>\u2192 <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/devops\/?utm_source=habr\">\u00censcriere la Slurm DevOps<\/a><\/noindex><br \/>\nPre\u021b: 45 000 \u20bd<\/p>\n<p>\n<b class=\"spoiler_title\">Program:<\/b><\/p>\n<p>Tema nr. 1: Introducere \u00een Git<br \/>\n\u2014 Comenzi de baz\u0103 git init, commit, add, diff, log, status, pull, push<br \/>\n\u2014 Configurarea mediului local: recomand\u0103ri practice<br \/>\n\u2014 Git flow, ramuri \u0219i etichete, strategii de \u00eembinare<br \/>\n\u2014 Lucrul cu mai multe repozitorii remote<\/p>\n<p><\/p>\n<p>Tema Nr. 2: Lucrul \u00een echip\u0103 cu Git<br \/>\n\u2014 GitHub flow<br \/>\n\u2014 Fork, remote, pull request<br \/>\n\u2014 Conflicte, versiuni, \u00eenc\u0103 o dat\u0103 despre Gitflow \u0219i alte fluxe relevante pentru echipe<\/p>\n<p><\/p>\n<p>Tema Nr. 3: CI\/CD introducere \u00een automatizare<br \/>\n\u2014 Automatizarea \u00een Git (bo\u021bi, introducere \u00een CI, hook-uri)<br \/>\n\u2014 Instrumente (bash, make, gradle)<br \/>\n\u2014 Linii de asamblare din fabric\u0103 \u0219i aplicarea lor \u00een IT<\/p>\n<p><\/p>\n<p>Tema Nr. 4: CI\/CD: Lucrul cu Gitlab<br \/>\n\u2014 Construire, testare, desf\u0103\u0219urare<br \/>\n\u2014 Etape, variabile, controlul execu\u021biei (only, when, include)<\/p>\n<p><\/p>\n<p>Tema Nr. 5: Lucrul cu aplica\u021bia din perspectiva dezvolt\u0103rii<br \/>\n\u2014 Scriem un microserviciu \u00een Python (inclusiv teste)<br \/>\n\u2014 Utilizarea docker-compose \u00een dezvoltare<\/p>\n<p><\/p>\n<p>Tema Nr. 6: Infrastructure as Code<br \/>\n\u2014 IaC: abordarea infrastructurii ca \u0219i cod<br \/>\n\u2014 IaC pe exemplul Terraform<br \/>\n\u2014 IaC pe exemplul Ansible<br \/>\n\u2014 Idempotent\u0103, declarativitate<br \/>\n\u2014 Practica cre\u0103rii de playbook-uri Ansible<br \/>\n\u2014 Stocarea configura\u021biilor, colaborare, automatizarea aplica\u021biilor<\/p>\n<p><\/p>\n<p>Tema Nr. 7: Testarea infrastructurii<br \/>\n\u2014 Testarea \u0219i integrarea continu\u0103 cu Molecule \u0219i Gitlab CI<\/p>\n<p><\/p>\n<p>Tema Nr. 8: Automatizarea ridic\u0103rii serverelor<br \/>\n\u2014 Construim imagini<br \/>\n\u2014 PXE \u0219i DHCP<\/p>\n<p><\/p>\n<p>Tema Nr. 9: Automatizarea infrastructurii<br \/>\n\u2014 Exemplu de serviciu de infrastructur\u0103 pentru autorizarea pe servere<br \/>\n\u2014 ChatOps (integrarea mesajeriei cu pipeline-urile)<\/p>\n<p><\/p>\n<p>Tema Nr. 10: Automatizarea securit\u0103\u021bii<br \/>\n\u2014 Semnarea artefactelor CI\/CD<br \/>\n\u2014 Scanarea vulnerabilit\u0103\u021bilor<\/p>\n<p><\/p>\n<p>Tema Nr. 11: Monitorizare<br \/>\n\u2014 Defini\u021bia SLA, SLO, Error Budget \u0219i alte termeni severe din lumea SRE<br \/>\n\u2014 SRE: Practica monitoriz\u0103rii SLI \u0219i SLO<br \/>\n\u2014 SRE: Practica aplic\u0103rii Error Budget<br \/>\n\u2014 SRE: Gestionarea \u00eentreruperilor \u0219i a sarcinii opera\u021bionale (apigateway, service mesh, circuit breakers)<br \/>\n\u2014 Monitorizarea pipeline-urilor \u0219i metricile de dezvoltare<\/p>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/455972\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>&lt;TL;DR&gt; \u0421\u043b\u0451\u0440\u043c \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u043e\u0439\u0442\u0438 \u0432 \u0442\u0435\u043c\u0443 Kubernetes \u0438\u043b\u0438 \u043f\u043e\u0434\u0442\u044f\u043d\u0443\u0442\u044c \u0441\u0432\u043e\u0438 \u0437\u043d\u0430\u043d\u0438\u044f. \u0423\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0438 \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u044b. \u0422\u0435\u0445, \u043a\u0442\u043e \u043d\u0438\u0447\u0435\u0433\u043e \u043d\u043e\u0432\u043e\u0433\u043e \u043d\u0435 \u0443\u0437\u043d\u0430\u043b \u0438\u043b\u0438 \u043d\u0435 \u0440\u0435\u0448\u0438\u043b \u0441\u0432\u043e\u0438 \u0437\u0430\u0434\u0430\u0447\u0438, \u0441\u0447\u0438\u0442\u0430\u043d\u043d\u044b\u0435 \u0435\u0434\u0438\u043d\u0438\u0446\u044b. \u0411\u0435\u0437\u0443\u0441\u043b\u043e\u0432\u043d\u044b\u043c \u043c\u0430\u043d\u0438\u0431\u0435\u043a\u043e\u043c \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u0434\u043d\u044f (\u00ab\u0415\u0441\u043b\u0438 \u0432\u044b \u0447\u0443\u0432\u0441\u0442\u0432\u0443\u0435\u0442\u0435, \u0447\u0442\u043e \u0421\u043b\u0451\u0440\u043c \u0432\u0430\u043c \u043d\u0435 \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442, \u043c\u044b \u0432\u0435\u0440\u043d\u0435\u043c \u043f\u043e\u043b\u043d\u0443\u044e \u0446\u0435\u043d\u0443 \u0431\u0438\u043b\u0435\u0442\u0430\u00bb) \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043b\u0441\u044f \u0432\u0441\u0435\u0433\u043e \u043e\u0434\u0438\u043d \u0447\u0435\u043b\u043e\u0432\u0435\u043a, \u043e\u0431\u043e\u0441\u043d\u043e\u0432\u0430\u0432 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0435\u0440\u0435\u043e\u0446\u0435\u043d\u0438\u043b \u0441\u0432\u043e\u0438 \u0441\u0438\u043b\u044b. \u0421\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26516,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-35323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043b\u0451\u0440\u043c.\" \/>\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-gusenitsa-prevratilas-v-babochku\" 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