January 2026
Intermediate to advanced
392 pages
9h 33m
French
book
Guide d'étude de l'administrateur Kubernetes certifié (CKA) (French Edition), 2nd Edition
by Benjamin Muschko
Content preview from Guide d'étude de l'administrateur Kubernetes certifié (CKA) (French Edition), 2nd Edition
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Chapitre 18. Ingresses
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Le chapitre 17 a abordé l'objectif et la création de la primitive Service. Une fois qu'il est nécessaire d'exposer l'application à des consommateurs externes, il devient crucial de choisir un type de service approprié. Le choix le plus pratique consiste souvent à créer une primitive de service de type LoadBalancer. Un tel service offre des capacités d'équilibrage de charge en attribuant une adresse IP externe accessible aux consommateurs en dehors du cluster Kubernetes.
Mais choisir un service LoadBalancer pour chaque application accessible de l'extérieur a des inconvénients. Dans un environnement de fournisseur de Cloud, chaque service déclenche la mise en place d'un équilibreur de charge externe, ce qui augmente les coûts. En plus, gérer un ensemble d'objets de service LoadBalancer peut être compliqué sur le plan administratif, car il faut créer un nouvel objet pour chaque microservice accessible de l'extérieur.
Pour atténuer ces problèmes, la primitive Ingress entre en jeu, offrant un point d'entrée unique et équilibré en termes de charge vers une pile d'applications. Un Ingress a la capacité d'acheminer les requêtes HTTP(S) externes vers un ou plusieurs services au sein du cluster en fonction d'un nom d'hôte optionnel résolvable par DNS et d'un chemin d'accès URL. Ce chapitre vous guidera dans la création et l'accès à un ...
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