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The Art of Monitoring by James Turnbull

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7 Containers: another kind of host

With the rise of container virtualization it’s also important to understand how to monitor metrics on containers. Containers are a form of operating system-level virtualization, most clearly epitomized by Docker. Rather than running a full scale hypervisor like a traditional virtual machine they use kernel features like namespaces and cgroups to create small and lightweight compute instances.

Note We’re going to focus on monitoring Docker-specific containers in this chapter. There are other emerging container platforms but none with the depth of adoption. If that changes the chapter will be updated to include them.

We’re going to discuss the challenges of monitoring lightweight and fast-moving containers ...

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