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Hot-plug CPU and Memory Disabled for Some Linux Kernels

Problem: Some Linux kernels do not support hot-plug of CPU and/or memory. This can affect Linux instances created from ISO or from a template created from an imported VM, and the following marketplace templates:

  • Ubuntu 16.04 - Firemon Immediate Insight
  • Ubuntu 16.04 LTS (64-bit)

Solution: Compile a new kernel with CONFIG_HOTPLUG_CPU and CONFIG_NUMA enabled. Please see these third-party articles for more information: CPU and memory.

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