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I am building a new lab for my CCNP studies. I want to use Ansible to manage 10 Cisco routers. To do this, I am using a Docker node inside EVE-NG as my control station.

I have a technical question about resources. My server is getting very slow when I start the automation. I want to know:

• Image Choice: Do you prefer using a light Ubuntu Docker image for Python scripts, or is it better to use a full Linux VM node? Which one is more "stable" for long labs?

• CPU/RAM: What is the smallest amount of RAM I can give to an Ansible node without the scripts failing? I want to save space so I can add more routers later.

• KVM Settings: In 2026, are you still using "uksm" to save memory, or is there a better setting in the new EVE-NG version for handling many small Docker nodes?

I want my lab to be fast and professional. If you have a "pro-tip" for building automation labs, I would love to hear it!