containerd - w3toppers.com

Adding insecure registry in containerd

ctr does not read the /etc/containerd/config.toml config file, this config is used by cri, which means kubectl or crictl would use it. The error log http: server gave HTTP response to HTTPS client, shows that the registry is using http, but ctr is trying to connect it using https. So if you want to pull … Read more

What is the runtime performance cost of a Docker container?

An excellent 2014 IBM research paper “An Updated Performance Comparison of Virtual Machines and Linux Containers” by Felter et al. provides a comparison between bare metal, KVM, and Docker containers. The general result is: Docker is nearly identical to native performance and faster than KVM in every category. The exception to this is Docker’s NAT — if you … Read more