September 2024
Intermediate to advanced
430 pages
12h 33m
Spanish
Content preview from Infraestructura como código, 2ª edición
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Capítulo 11. Construir servidores como código
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La Infraestructura como Código surgió como una forma de configurar servidores. Los administradores de sistemas escribían scripts shell, batch y Perl. CFEngine fue pionero en el uso de DSL declarativos e idempotentes para instalar paquetes y gestionar archivos de configuración en servidores, y Puppet y Chef le siguieron. Estas herramientas daban por sentado que partías de un servidor existente, a menudo un servidor físico en un rack, a veces una máquina virtual con VMware y, más tarde, instancias en la nube.
Ahora o bien nos centramos en pilas de infraestructuras en las que los servidores son sólo una parte, o bien trabajamos con clusters de contenedores en los que los servidores son un detalle subyacente.
Pero los servidores siguen siendo una parte esencial de la mayoría de los entornos de ejecución de aplicaciones. La mayoría de los sistemas que existen desde hace más de unos pocos años ejecutan al menos algunas aplicaciones en servidores. E incluso los equipos que ejecutan clusters suelen necesitar construir y ejecutar servidores para los nodos anfitriones.
Los servidores son más complejos que otros tipos de infraestructura, como las redes y el almacenamiento. Tienen más piezas móviles y variaciones, por lo que la mayoría de los equipos de sistemas siguen pasando bastante tiempo inmersos en sistemas operativos, paquetes ...
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