April 2025
Intermediate to advanced
328 pages
9h 3m
Italian
book
Kubernetes: Up and Running, 3a edizione
by Brendan Burns, Joe Beda, Kelsey Hightower, Lachlan Evenson
Content preview from Kubernetes: Up and Running, 3a edizione
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Capitolo 4. Comandi comuni di kubectl
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L'utility da riga di comando kubectl è uno strumento potente e nei capitoli seguenti lo utilizzerai per creare oggetti e interagire con l'API di Kubernetes. Prima, però, è opportuno ripassare i comandi di base di kubectl che si applicano a tutti gli oggetti di Kubernetes.
Spazi dei nomi
Kubernetes utilizza gli spazi dei nomi per organizzare gli oggetti nel cluster. Per impostazione predefinita, lo strumento a riga di comando kubectl interagisce con lo spazio dei nomi default. Se vuoi utilizzare uno spazio dei nomi diverso, puoi passare a il flag . Se vuoi utilizzare uno spazio dei nomi diverso, puoi passare akubectl il flag --namespace. Ad esempio, kubectl --namespace=mystuff fa riferimento a oggetti nello spazio dei nomi mystuff. Se vuoi essere conciso, puoi anche utilizzare il flag-n. Se vuoi interagire con tutti i namespace, ad esempio per elencare tutti i Pod del tuo cluster, puoi passare il flag --all-namespaces.
Contesti
Se vuoi cambiare lo spazio dei nomi predefinito in modo permanente, puoi utilizzare un contesto. Questo viene registrato in un file di configurazione di kubectl, solitamente situato in $HOME/.kube/config. Questo file di configurazione memorizza anche le modalità di ricerca e di autenticazione del cluster. Ad esempio, puoi creare un contesto con un diverso spazio dei nomi predefinito ...
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