January 2019
Intermediate to advanced
484 pages
11h 48m
English
Content preview from DevOps with Kubernetes - Second Edition
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Configuration management
Configuration management tools help to configure OS settings, such as creating a user or group, or installing system libraries. It also acts as an orchestrator, which keeps multiple managed servers consistent with our desired state.
It's not a programming script, because a script is not necessarily idempotent. This means that if we execute a script twice, we might get an error, such as if we are trying to create the same user twice. Configuration management tools, however, watch the state, so if a user is created already, a configuration management tool wouldn't do anything. If we delete a user accidentally or even intentionally, the configuration management tool would create the user again.
Configuration management ...
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