April 2025
Intermediate to advanced
432 pages
13h 18m
Italian
book
Cassandra: The Definitive Guide, (Revised) Third Edition, 3a edizione
by Jeff Carpenter, Eben Hewitt
Content preview from Cassandra: The Definitive Guide, (Revised) Third Edition, 3a edizione
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Capitolo 11. Monitoraggio
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Il termine osservabilità viene spesso utilizzato per descrivere un attributo auspicabile dei sistemi distribuiti. Osservabilità significa avere visibilità sui vari componenti di un sistema per rilevare, prevedere e forse anche prevenire i complessi guasti che possono verificarsi nei sistemi distribuiti. I guasti nei singoli componenti possono influenzare a loro volta altri componenti e i guasti multipli possono interagire in modi imprevisti, portando a interruzioni dell'intero sistema. Gli elementi comuni di una strategia di osservabilità per un sistema includono le metriche, la registrazione e il tracciamento.
In questo capitolo imparerai come Cassandra supporta questi elementi di osservabilità e come utilizzare gli strumenti disponibili per monitorare e comprendere gli eventi importanti nel ciclo di vita del tuo cluster Cassandra. Vedremo alcuni semplici modi per vedere cosa sta succedendo, come cambiare i livelli di registrazione e capire l'output.
Per iniziare, parliamo di come Cassandra utilizza le estensioni di gestione Java (JMX) per esporre informazioni sulle sue operazioni interne e consentire la configurazione dinamica di alcuni suoi comportamenti. Questo ti darà una base per imparare a monitorare Cassandra con vari strumenti.
Monitoraggio di Cassandra con JMX
Cassandra utilizza JMX per consentire la gestione ...
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