September 2024
Intermediate to advanced
506 pages
12h 45m
Spanish
Content preview from Python para DevOps
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Capítulo 11. Tecnologías de contenedores: Docker y Docker Compose
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Las tecnologías de virtualización existen desde los tiempos de los mainframes de IBM. La mayoría de la gente no ha tenido la oportunidad de trabajar en un mainframe, pero estamos seguros de que algunos lectores de este libro recuerdan los días en que tenían que configurar o utilizar un servidor bare-metal de un fabricante como HP o Dell. Estos fabricantes siguen existiendo hoy en día, y todavía puedes utilizar servidores bare-metal alojados en una instalación de colocación, como en los buenos tiempos de la era punto com.
Sin embargo, cuando la mayoría de la gente piensa en virtualización, no piensa automáticamente en un mainframe. En su lugar, lo más probable es que imaginen una máquina virtual (MV) que ejecuta un sistema operativo invitado (SO) como Fedora o Ubuntu sobre un hipervisor como VMware ESX o Citrix/Xen. La gran ventaja de las máquinas virtuales sobre los servidores bare-metal normales es que, al utilizarlas, puedes optimizar los recursos del servidor (CPU, memoria, disco) repartiéndolos entre varias máquinas virtuales. También puedes ejecutar varios sistemas operativos, cada uno en su propia máquina virtual, sobre un servidor bare-metal compartido, en lugar de comprar un servidor dedicado para cada sistema operativo. Los servicios de computación en nube como Amazon EC2 no habrían sido ...
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