Failed to config "config_path = "/etc/containerd/certs.d" in config.toml

[tscosine]

I am going to run containerd with a private harbor registry, I follow the instructions in the document and edit my config files as follows

$ tree certs.d/
certs.d/
└── registry.localharbor.com
    └── hosts.toml

$ cat hosts.toml
server = "http://registry.localharbor.com"
[host."http://registry.localharbor.com"]
        capabilities = ["pull", "push"]

And add this config in /etc/containerd/config.toml

    [plugins."io.containerd.grpc.v1.cri".registry]
      config_path = "/etc/containerd/certs.d"

As a result, I success to pull a image by cmd ctr i pull --hosts-dir "/etc/containerd/certs.d" registry.localharbor.com/library/nginx:latest

but cmd ctr i pull registry.localharbor.com/library/nginx:latest is failed

$ ctr i pull registry.localharbor.com/library/nginx:latest
INFO[0000] trying next host                              error="failed to do request: Head \"https://registry.localharbor.com/v2/library/nginx/manifests/latest\": dial tcp 127.0.0.1:443: connect: connection refused" host=registry.localharbor.com
ctr: failed to resolve reference "registry.localharbor.com/library/nginx:latest": failed to do request: Head "https://registry.localharbor.com/v2/library/nginx/manifests/latest": dial tcp 127.0.0.1:443: connect: connection refused

containerd version: v1.6.9

[mxpv]

connection refused

This looks like a connection problem.

You can do ctr i pull --http-dump ... to get detailed information of what's happening.