{"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\/it\/blog\/administrirovanie\/slyorm-gusenitsa-prevratilas-v-babochku","title":{"rendered":"Slurm: la larva si \u00e8 trasformata in farfalla","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Slurm: la larva si \u00e8 trasformata in farfalla\" 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 offre davvero l\u2019opportunit\u00e0 di approfondire Kubernetes o migliorare le proprie conoscenze.<\/li>\n<li>I partecipanti sono soddisfatti. Solo pochissimi non hanno appreso nulla di nuovo o risolto i loro problemi. Solo una persona ha approfittato della garanzia di rimborso del primo giorno (\"Se senti che Slurm non fa per te, restituiamo l'intero prezzo del biglietto\"), giustificando la sua decisione con un sottovalutazione delle proprie capacit\u00e0.<\/li>\n<li>Il prossimo Slurm si terr\u00e0 all'inizio di settembre a San Pietroburgo. Selectel, il nostro sponsor di sempre, fornisce non solo il cloud per gli stand, ma anche la sua sala conferenze.<\/li>\n<li>Ripetiamo il Slurm base (9-11 settembre) e presentiamo un nuovo programma: Slurm DevOps (4-6 settembre).<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2 id=\"chto-takoe-slyorm-i-kak-on-izmenilsya\">Che cos'\u00e8 Slurm e come \u00e8 cambiato<\/h2>\n<p><\/p>\n<p>\u0413\u043e\u0434 \u043d\u0430\u0437\u0430\u0434 \u043d\u0430\u043c \u043f\u0440\u0438\u0448\u043b\u0430 \u0432 \u0433\u043e\u043b\u043e\u0432\u0443 \u0438\u0434\u0435\u044f \u043f\u0440\u043e\u0432\u0435\u0441\u0442\u0438 \u043a\u0443\u0440\u0441\u044b \u043f\u043e Kubernetes. \u0412 \u0430\u0432\u0433\u0443\u0441\u0442\u0435&#8217;18 \u043f\u0440\u043e\u0448\u0435\u043b \u0421\u043b\u0451\u0440\u043c-1: \u0442\u0440\u0443\u0434\u043d\u044b\u0439, \u0441 continuous presintation (\u043a\u043e\u0433\u0434\u0430 \u043f\u0440\u0435\u0437\u0435\u043d\u0442\u0430\u0446\u0438\u044f \u0434\u043e\u043f\u0438\u043b\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0443\u0436\u0435 \u043d\u0430 \u0441\u0446\u0435\u043d\u0435), \u0441 \u043a\u0443\u0447\u0435\u0439 \u0431\u044b\u0442\u043e\u0432\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c. \u0418\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u044f \u0441\u043f\u043b\u0430\u0447\u0438\u0432\u0430\u044e\u0442: \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0438 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u0421\u043b\u0451\u0440\u043c\u0430, \u043a\u0430\u043a \u0411\u0440\u0430\u0442\u0441\u0442\u0432\u043e \u041a\u043e\u043b\u044c\u0446\u0430, \u0434\u043e \u0441\u0438\u0445 \u043f\u043e\u0440 \u043e\u0431\u0449\u0430\u044e\u0442\u0441\u044f \u0434\u0440\u0443\u0433 \u0441 \u0434\u0440\u0443\u0433\u043e\u043c.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: la larva si \u00e8 trasformata in farfalla\" src=\"\/wp-content\/uploads\/2019\/06\/2a6d73eceb41a3c234a26e459cb168cd.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Cos\u00ec si \u00e8 presentato Slurm-1<\/em><\/p>\n<p><\/p>\n<p>\u041d\u0430 \u043f\u0435\u0440\u0432\u043e\u043c \u0421\u043b\u0451\u0440\u043c\u0435 \u0440\u043e\u0434\u0438\u043b\u0430\u0441\u044c \u0438\u0434\u0435\u044f \u043f\u0440\u043e\u0432\u0435\u0441\u0442\u0438 \u041c\u0435\u0433\u0430\u0421\u043b\u0451\u0440\u043c. \u041c\u044b \u0441\u043f\u0440\u043e\u0441\u0438\u043b\u0438 \u0443 \u043b\u044e\u0434\u0435\u0439, \u043a\u0430\u043a\u0438\u0435 \u0442\u0435\u043c\u044b \u0438\u043c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b, \u0438 \u0432 \u043e\u043a\u0442\u044f\u0431\u0440\u0435 \u043f\u0440\u043e\u0432\u0435\u043b\u0438 \u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u0439 \u043a\u0443\u0440\u0441 \u00ab\u041f\u043e \u0437\u0430\u044f\u0432\u043a\u0430\u043c \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u043e\u0432\u00bb. \u041f\u043e\u043b\u0443\u0447\u0438\u043b\u043e\u0441\u044c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0435, \u043d\u043e \u043e\u0434\u043d\u043e\u0440\u0430\u0437\u043e\u0432\u043e\u0435 \u043c\u0435\u0440\u043e\u043f\u0440\u0438\u044f\u0442\u0438\u0435. \u041a \u043c\u0430\u044e&#8217;19 \u043c\u044b \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043b\u0438 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0438\u0439 \u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u0439 \u043a\u0443\u0440\u0441, \u0441\u043e \u0441\u0432\u043e\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u043e\u0439 \u0438 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0438\u0441\u0442\u043e\u0440\u0438\u0435\u0439.<\/p>\n<p><\/p>\n<p>Nel corso dell'anno S\u043b\u0451\u0440\u043c si \u00e8 trasformato anche a livello organizzativo:<br \/>\n\u2014 Abbiamo rimosso Docker e Ansible dal programma principale, creando corsi online separati.<br \/>\n\u2014 Abbiamo organizzato un supporto tecnico che aiuta gli studenti a risolvere problemi con i cluster di apprendimento.<br \/>\n\u2014 I relatori hanno ora supporto metodologico.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: la larva si \u00e8 trasformata in farfalla\" src=\"\/wp-content\/uploads\/2019\/06\/df50b156ac07048fadb0d5fdee127ff3.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<em>Il team che ha realizzato S\u043b\u0451\u0440\u043c-4<\/em><\/p>\n<p><\/p>\n<h2 id=\"otzyvy-uchastnikov\">Feedback dei partecipanti<\/h2>\n<p><\/p>\n<p>Abbiamo raggiunto un altro record: 170 partecipanti al S\u043b\u0451\u0440\u043c di base, 75 al MegaS\u043b\u0451\u0440\u043c.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: la larva si \u00e8 trasformata in farfalla\" src=\"\/wp-content\/uploads\/2019\/06\/c38db60feaebc11a56fed6906f0ededa.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>S\u043b\u0451\u0440\u043c-4<br \/>\nIl modulo di feedback \u00e8 stato compilato da 101 persone su 170.<\/p>\n<p><\/p>\n<p>\u00c8 diventato chiaro Kubernetes?<br \/>\n41 \u2014 Al momento non capisco k8s, ma vedo dove approfondire.<br \/>\n36 \u2014 Prima non conoscevo k8s, ora ho capito.<br \/>\n23 \u2014 Sapevo gi\u00e0 k8s, ora lo conosco meglio.<br \/>\n1 \u2014 Non ho appreso nulla di nuovo.<br \/>\n0 \u2014 Non ho capito nulla su k8s. <\/p>\n<p><\/p>\n<p>Come giudichi l'intensit\u00e0 del S\u043b\u0451\u0440\u043c? <\/p>\n<p><\/p>\n<p>16 persone pensano che il S\u043b\u0451\u0440\u043c proceda troppo facilmente e lentamente, mentre 14 ritengono che sia troppo difficile e veloce. Per gli altri \u00e8 perfetto.<\/p>\n<p><\/p>\n<p>Hai risolto il problema per cui sei venuto a Slyorm? <\/p>\n<p><\/p>\n<p>90 \u2014 S\u00ec.<br \/>\n11 \u2014 No.<\/p>\n<p><\/p>\n<p>MegaSlyorm<\/p>\n<p><\/p>\n<p>40 persone hanno compilato il modulo di feedback. 2 persone hanno detto che era troppo semplice e lento. 1 persona non ha risolto il problema per cui era venuto alla Mega. Per gli altri tutto OK.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/serveradmin.ru\/otzyv-o-slerm-kak-ya-prohodil-obuchenie-po-kubernetes\/\">Recensione su Slyorm su https:\/\/serveradmin.ru<\/a><\/noindex><\/p>\n<p><\/p>\n<h2 id=\"otzyvy-spikerov\">Recensioni dei relatori<\/h2>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Slurm: la larva si \u00e8 trasformata in farfalla\" src=\"\/wp-content\/uploads\/2019\/06\/cfbeb0b99d4c835bd1ab05925806c887.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Se al Slyorm di San Pietroburgo a febbraio erano principalmente principianti, al Slyorm di Mosca molte persone avevano gi\u00e0 provato Kubernetes. Ci sono state molte domande avanzate che hanno fatto riflettere.<\/p>\n<p><\/p>\n<p>Se a San Pietroburgo chiedevano quando rilasceremo il nostro fork di kubespray, a Mosca gi\u00e0 chiedevano perch\u00e9 proponiamo di usare il nostro fork invece di prendere il kubespray originale. Questo \u00e8 gi\u00e0 pensiero critico da parte di middle-senior.<\/p>\n<p><\/p>\n<p>La pratica \u00e8 stata difficile, le persone hanno commesso molti errori, e questo \u00e8 fantastico: \u00e8 bene farsi male durante l'apprendimento, non in battaglia.<\/p>\n<p><\/p>\n<p>Ci siamo spesso scontrati con limiti nell'ottenere certificati, limiti nel download da Github, ecc. Questa \u00e8 la vita \u2014 abbiamo distribuito contemporaneamente nel cloud Selectel circa 200 cluster. Nessuno prepara le proprie risorse e limiti per una cosa del genere. <\/p>\n<p><\/p>\n<h2 id=\"anons-slyorma-v-selectel\">Annuncio di Slyorm in Selectel<\/h2>\n<p><\/p>\n<p>\u2192 <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/?utm_source=habr\">Registrazione per Slyorm-5<\/a><\/noindex><br \/>\nPrezzo: 25.000 \u20bd<\/p>\n<p>\n<b class=\"spoiler_title\">Programma:<\/b><\/p>\n<p>Tema n. 1: Introduzione a Kubernetes, componenti principali<br \/>\n\u2014 Introduzione alla tecnologia k8s. Descrizione, utilizzo, concetti<br \/>\n\u2014 Pod, ReplicaSet, Deployment, Service, Ingress, PV, PVC, ConfigMap, Secret<\/p>\n<p><\/p>\n<p>Tema n. 2: Architettura del cluster, componenti principali, resilienza, rete k8s<br \/>\n\u2014 Architettura del cluster, componenti principali, resilienza<br \/>\n\u2014 Rete k8s<\/p>\n<p><\/p>\n<p>Tema n. 3: Kubespray, ottimizzazione e configurazione del cluster Kubernetes<br \/>\n\u2014 Kubespray, configurazione e ottimizzazione del cluster Kubernetes<\/p>\n<p><\/p>\n<p>Tema n. 4: Astrazioni avanzate di Kubernetes<br \/>\n\u2014 DaemonSet, StatefulSet, RBAC, Job, CronJob, Pod Scheduling, InitContainer<\/p>\n<p><\/p>\n<p>Tema n. 5: Pubblicazione di servizi e applicazioni<br \/>\n\u2014 Panoramica dei metodi di pubblicazione dei servizi: NodePort vs LoadBalancer vs Ingress<br \/>\n\u2014 Ingress controller (Nginx): bilanciamento del traffico in entrata<br \/>\n\u2014 Cert-manager: ottenimento automatico dei certificati SSL\/TLS<\/p>\n<p><\/p>\n<p>Tema n. 6: Introduzione a Helm<\/p>\n<p><\/p>\n<p>Tema n. 7: Installazione di cert-manager<\/p>\n<p><\/p>\n<p>Tema n. 8: Ceph: installazione in modalit\u00e0 'segui ci\u00f2 che faccio'<\/p>\n<p><\/p>\n<p>Tema n. 9: Logging e monitoraggio<br \/>\n\u2014 Monitoraggio del cluster, Prometheus<br \/>\n\u2014 Logging del cluster, Fluentd\/Elastic\/Kibana<\/p>\n<p><\/p>\n<p>Tema n. 10: Aggiornamento del cluster<\/p>\n<p><\/p>\n<p>Tema n. 11: Lavoro pratico, dockerizzazione di un'applicazione e avvio nel cluster<\/p>\n<p><\/p>\n<p>I corsi su Docker e Ansible su stepik.org sono inclusi nel prezzo.<\/p>\n<p><\/p>\n<p>\u2192 <noindex><a rel=\"nofollow\" href=\"https:\/\/slurm.io\/devops\/?utm_source=habr\">Registrazione a Slerm DevOps<\/a><\/noindex><br \/>\nPrezzo: 45.000 \u20bd<\/p>\n<p>\n<b class=\"spoiler_title\">Programma:<\/b><\/p>\n<p>Tema n. 1: Introduzione a Git<br \/>\n\u2014 Comandi git di base: init, commit, add, diff, log, status, pull, push<br \/>\n\u2014 Configurazione dell'ambiente locale: consigli pratici<br \/>\n\u2014 Git flow, rami e tag, strategie di merge<br \/>\n\u2014 Lavorare con pi\u00f9 remote repo<\/p>\n<p><\/p>\n<p>Tema n. 2: Lavoro di squadra con Git<br \/>\n\u2014 GitHub flow<br \/>\n\u2014 Fork, remoute, pull request<br \/>\n\u2014 Conflitti, versioni, ancora su Gitflow e altri flow applicabili ai team<\/p>\n<p><\/p>\n<p>Tema \u21163: CI\/CD introduzione all'automazione<br \/>\n\u2014 Automazione in git (bot, introduzione a CI, hook)<br \/>\n\u2014 Strumenti (bash, make, gradle)<br \/>\n\u2014 Linee di assemblaggio delle fabbriche e il loro utilizzo in IT<\/p>\n<p><\/p>\n<p>Tema \u21164: CI\/CD: Lavorare con Gitlab<br \/>\n\u2014 Assemblaggio, test, deployment<br \/>\n\u2014 Fasi, variabili, controllo dell'esecuzione (only, when, include)<\/p>\n<p><\/p>\n<p>Tema \u21165: Lavorare con l'applicazione dal punto di vista dello sviluppo<br \/>\n\u2014 Creiamo un microservizio in Python (inclusi i test)<br \/>\n\u2014 Applicazione di docker-compose nello sviluppo<\/p>\n<p><\/p>\n<p>Tema \u21166: Infrastructure as Code<br \/>\n\u2014 IaC: approccio all'infrastruttura come codice<br \/>\n\u2014 IaC tramite Terraform<br \/>\n\u2014 IaC tramite Ansible<br \/>\n\u2014 Idempotenza, dichiarativit\u00e0<br \/>\n\u2014 Pratica nella creazione di playbook Ansible<br \/>\n\u2014 Conservazione delle configurazioni, collaborazione, automazione delle applicazioni<\/p>\n<p><\/p>\n<p>Tema \u21167: Test dell'infrastruttura<br \/>\n\u2014 Test e integrazione continua con Molecule e Gitlab CI<\/p>\n<p><\/p>\n<p>Tema \u21168: Automazione del sollevamento dei server<br \/>\n\u2014 Creiamo immagini<br \/>\n\u2014 PXE e DHCP<\/p>\n<p><\/p>\n<p>Tema n.\u00b0 9: Automazione dell'infrastruttura<br \/>\n\u2014 Esempio di servizio infrastrutturale per l'autenticazione sui server<br \/>\n\u2014 ChatOps (integrazione di messaggeri con pipeline)<\/p>\n<p><\/p>\n<p>Tema n.\u00b0 10: Automazione della sicurezza<br \/>\n\u2014 Firma degli artefatti CI\/CD<br \/>\n\u2014 Scansione delle vulnerabilit\u00e0<\/p>\n<p><\/p>\n<p>Tema n.\u00b0 11: Monitoraggio<br \/>\n\u2014 Definizione di SLA, SLO, Error Budget e altri termini spaventosi del mondo SRE<br \/>\n\u2014 SRE: Pratica del monitoraggio SLI e SLO<br \/>\n\u2014 SRE: Pratica dell'applicazione dell'Error Budget<br \/>\n\u2014 SRE: Gestione delle interruzioni e del carico operativo (apigateway, service mesh, circuit breakers)<br \/>\n\u2014 Monitoraggio delle pipeline e metriche di sviluppo<\/p>\n<p>Fonte: <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 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