{"id":37606,"date":"2019-10-31T22:18:33","date_gmt":"2019-10-31T19:18:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/cheklist-gotovnosti-k-prodakshnu\/"},"modified":"2019-10-31T22:18:33","modified_gmt":"2019-10-31T19:18:33","slug":"cheklist-gotovnosti-k-prodakshnu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/administrirovanie\/cheklist-gotovnosti-k-prodakshnu","title":{"rendered":"Checklist di preparazione alla produzione","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><i>La traduzione dell'articolo \u00e8 stata preparata appositamente per gli studenti del corso <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/3Sdo\/\">\u00abPratiche e strumenti DevOps\u00bb<\/a><\/noindex>, che inizia gi\u00e0 oggi!<\/i><\/p>\n<p><img decoding=\"async\" alt=\"Checklist di preparazione alla produzione\" src=\"\/wp-content\/uploads\/2019\/08\/1e5e1c61f18be45e9f4a8d0b16ccd422.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Hai mai lanciato un nuovo servizio in produzione? O forse ti sei occupato del supporto di servizi esistenti? Se s\u00ec, quali criteri hai seguito? Cosa \u00e8 considerato positivo per la produzione e cosa \u00e8 negativo? Come formi i nuovi membri del team sui rilasci o sul supporto dei servizi esistenti?<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n\u0411\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439 \u0432 \u0447\u0430\u0441\u0442\u0438 \u043f\u0440\u0430\u043a\u0442\u0438\u043a \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u043e\u0439 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0432 \u0438\u0442\u043e\u0433\u0435 \u043f\u0440\u0438\u0445\u043e\u0434\u044f\u0442 \u043a \u043f\u043e\u0434\u0445\u043e\u0434\u0430\u043c \u201c\u0414\u0438\u043a\u043e\u0433\u043e \u0417\u0430\u043f\u0430\u0434\u0430&#187;. \u041a\u0430\u0436\u0434\u0430\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0440\u043e\u0431 \u0438 \u043e\u0448\u0438\u0431\u043e\u043a \u0441\u0430\u043c\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u0442\u0441\u044f \u0441 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u043c\u0438 \u0438 \u043b\u0443\u0447\u0448\u0438\u043c\u0438 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0430\u043c\u0438. \u041d\u043e \u044d\u0442\u043e \u0447\u0430\u0441\u0442\u043e \u0432\u043b\u0438\u044f\u0435\u0442 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u0443\u0441\u043f\u0435\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432, \u043d\u043e \u0438 \u043d\u0430 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u043e\u0432.<\/p>\n<p>Il metodo delle prove e degli errori crea un ambiente in cui si diffonde la ricerca di colpevoli e il passaggio di responsabilit\u00e0. Con questo comportamento diventa sempre pi\u00f9 difficile imparare dagli errori e non ripeterli.<\/p>\n<p>Le organizzazioni di successo:<\/p>\n<ul>\n<li>riconoscono la necessit\u00e0 di linee guida per la produzione, <\/li>\n<li>studiano le migliori pratiche, <\/li>\n<li>iniziano a discutere della prontezza al rilascio durante lo sviluppo di nuovi sistemi o componenti, <\/li>\n<li>garantiscono il rispetto delle norme di preparazione alla produzione.<\/li>\n<\/ul>\n<p>\nLa preparazione per la produzione include il processo di \"revisione\". La revisione pu\u00f2 assumere la forma di una checklist o di un insieme di domande. Si pu\u00f2 effettuare manualmente, automaticamente o in entrambi i modi. Invece di liste statiche di requisiti, si possono creare modelli di checklist che si adattano a esigenze specifiche. In questo modo, gli ingegneri hanno un modo per ereditare conoscenze e la flessibilit\u00e0 necessaria quando \u00e8 richiesta.<\/p>\n<h3>Quando controllare il servizio per la prontezza alla produzione?<\/h3>\n<p>\n\u00c8 utile effettuare un controllo della prontezza alla produzione non solo direttamente prima del rilascio, ma anche quando si trasferisce a un altro team di gestione o a un nuovo dipendente.<\/p>\n<p>Effettuate il controllo quando:<\/p>\n<ul>\n<li>Rilasciate un nuovo servizio in produzione.<\/li>\n<li>Trasferite la gestione del servizio in produzione a un altro team, come SRE.<\/li>\n<li>Trasferite la gestione del servizio in produzione a nuovi dipendenti.<\/li>\n<li>Organizzate il supporto tecnico.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Checklist di verifica della prontezza alla produzione<\/h3>\n<p>\nUn po' di tempo fa, come esempio, ho <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/google-cloud\/production-guideline-9d5d10c8f1e\">ha pubblicato<\/a><\/noindex> realizzato una checklist di verifica della prontezza alla produzione. Anche se questo elenco \u00e8 emerso durante il lavoro con clienti di Google Cloud, sar\u00e0 utile e applicabile anche al di fuori di Google Cloud.<\/p>\n<h4>Progettazione e sviluppo<\/h4>\n<p><\/p>\n<ul>\n<li>Sviluppa un processo di build riproducibile che non richieda accesso a servizi esterni e non dipenda da guasti di sistemi esterni.<\/li>\n<li>Durante la progettazione e lo sviluppo, identifica e stabilisci SLO per i tuoi servizi.<\/li>\n<li>Documenta le aspettative riguardo alla disponibilit\u00e0 dei servizi esterni da cui dipendi.<\/li>\n<li>Evita un singolo punto di fallimento rimuovendo dipendenze da una singola risorsa globale. Replica la risorsa o utilizza un'alternativa in caso di indisponibilit\u00e0 della risorsa (ad esempio, un valore hard-coded).<\/li>\n<\/ul>\n<p><\/p>\n<h4>Gestione della configurazione<\/h4>\n<p><\/p>\n<ul>\n<li>La configurazione statica, piccola e non segreta pu\u00f2 essere passata tramite parametri della riga di comando. Per tutto il resto, utilizza i servizi di archiviazione della configurazione.<\/li>\n<li>La configurazione dinamica dovrebbe avere opzioni di riserva nel caso in cui il servizio di configurazione sia non disponibile.<\/li>\n<li>La configurazione dell'ambiente di sviluppo non dovrebbe essere collegata alla configurazione di produzione. Altrimenti, ci\u00f2 potrebbe portare ad accessi dall'ambiente di sviluppo ai servizi di produzione, causando potenziali problemi di privacy e fuga di dati.<\/li>\n<li>Documenta tutto ci\u00f2 che pu\u00f2 essere configurato dinamicamente e descrivi il comportamento di fallback in caso di mancanza del sistema di consegna della configurazione.<\/li>\n<\/ul>\n<p><\/p>\n<h4>Gestione delle release<\/h4>\n<p><\/p>\n<ul>\n<li>Documenta in dettaglio il processo di rilascio. Descrivi come i rilasci influenzano gli SLO (ad esempio, un temporaneo aumento della latenza a causa di errori di cache).<\/li>\n<li>Documenta i rilasci canary.<\/li>\n<li>Sviluppa un piano per l'analisi dei rilasci canary e, se possibile, implementa meccanismi di rollback automatico.<\/li>\n<li>Assicurati che i rollback possano utilizzare gli stessi processi previsti per il deployment.<\/li>\n<\/ul>\n<p><\/p>\n<h4>Idoneit\u00e0 al monitoraggio (Observability)<\/h4>\n<p><\/p>\n<ul>\n<li>Assicurati che venga raccolto un set di metriche necessario per gli SLO. <\/li>\n<li>Assicurati di poter distinguere tra i dati client e server. Questo \u00e8 importante per la diagnosi dei guasti.<\/li>\n<li>Configura avvisi per ridurre il lavoro manuale. Ad esempio, elimina gli avvisi generati da operazioni di routine.<\/li>\n<li>Se utilizzi Stackdriver, abilita le metriche della piattaforma GCP nei tuoi cruscotti. Configura avvisi per le dipendenze di GCP.<\/li>\n<li>Diffondi sempre il tracciamento delle richieste in ingresso. Anche se non partecipi al tracciamento, questo permette ai servizi di livello inferiore di risolvere i problemi in produzione.<\/li>\n<\/ul>\n<p><\/p>\n<h4>Protezione e sicurezza<\/h4>\n<p><\/p>\n<ul>\n<li>Assicurati che tutte le connessioni esterne siano criptate.<\/li>\n<li>Verifica che i tuoi progetti in produzione abbiano una corretta configurazione IAM.<\/li>\n<li>Utilizza le reti per isolare i gruppi di istanze di macchine virtuali.<\/li>\n<li>Usa una VPN per connetterti in modo sicuro a reti remote.<\/li>\n<li>Documenta e monitora l'accesso degli utenti ai dati. Assicurati che tutti gli accessi degli utenti ai dati siano controllati e registrati.<\/li>\n<li>Assicurati che le endpoint per il debug siano limitate dalle ACL.<\/li>\n<li>Sanitizza l'input degli utenti. Imposta limiti di dimensione per i payload dell'input utente.<\/li>\n<li>Assicurati che il tuo servizio possa bloccare selettivamente il traffico in ingresso per utenti specifici. Questo consente di bloccare le violazioni senza influenzare altri utenti.<\/li>\n<li>Evita endpoint esterni che innescano un elevato numero di operazioni interne.<\/li>\n<\/ul>\n<p><\/p>\n<h4>Pianificazione delle capacit\u00e0<\/h4>\n<p><\/p>\n<ul>\n<li>Documenta come si scala il tuo servizio. Ad esempio: numero di utenti, dimensione del carico utile in entrata, numero di messaggi in entrata.<\/li>\n<li>Documenta i requisiti di risorse per il tuo servizio. Ad esempio: numero di istanze di macchine virtuali assegnate, numero di istanze Spanner, apparecchiature specializzate come GPU o TPU.<\/li>\n<li>Documenta le limitazioni delle risorse: tipo di risorsa, regione, ecc.<\/li>\n<li>Documenta i limiti delle quote per la creazione di nuove risorse. Ad esempio, un limite sul numero di richieste all'API GCE se utilizzi l'API per creare nuove istanze.<\/li>\n<li>Considera di eseguire test di carico per analizzare la degradazione delle prestazioni.<\/li>\n<\/ul>\n<p>\nEcco tutto. Ci vediamo in aula!<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/otus\/blog\/465489\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0434\u043b\u044f \u0441\u0442\u0443\u0434\u0435\u043d\u0442\u043e\u0432 \u043a\u0443\u0440\u0441\u0430 \u00abDevOps \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0438 \u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b\u00bb, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u0442\u0430\u0440\u0442\u0443\u0435\u0442 \u0443\u0436\u0435 \u0441\u0435\u0433\u043e\u0434\u043d\u044f! \u0412\u044b \u043a\u043e\u0433\u0434\u0430-\u043d\u0438\u0431\u0443\u0434\u044c \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u043b\u0438 \u043d\u043e\u0432\u044b\u0439 \u0441\u0435\u0440\u0432\u0438\u0441 \u0432 \u043f\u0440\u043e\u0434\u0430\u043a\u0448\u043d? 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