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SaltStack is an open source software for the automatic configuration of server systems. SaltStack runs a master process on a central server. The central server (master) sends configuration orders to several administrated servers, called Minions. The system administrator determines the configuration of the administrated servers by so-called SLS-files (SaLt State) which are written in YAML. Clients and groups of clients can be defined in SALT by so-called Grains. Sensitive information is stored on the master in so-called Pillars.
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