Help Center> > FAQs> General FAQs> What Restrictions Apply to ECSs?

What Restrictions Apply to ECSs?

Updated at: Apr 04, 2019 16:34
  • You are advised not to upgrade ECS kernel or OS versions. If you want to upgrade the main OS version, for example, from CentOS 7.2 to Cent OS 7.3, use the provided OS changing function.
  • You are advised not to uninstall the performance optimization software pre-installed on your ECSs.
  • You are advised not to change the MAC addresses of your ECS NICs.

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