1.现象
pull image failed: Failed to exec command: sudo -E /bin/bash -c "env PATH=$PATH crictl pull 172.23.123.117:8443/kubesphereio/pause:3.9"
FATA[0000] validate service connection: validate CRI v1 image API for endpoint "unix:///run/containerd/containerd.sock": rpc error: code = Unimplemented desc = unknown service runtime.v1.ImageService: Process exited with status 1
2.原因
这个错误表明 crictl 无法通过当前配置与容器运行时（如 containerd）进行通信。具体来说，crictl 正在尝试使用 CRI v1 的 ImageService API，但目标端点（containerd）似乎没有实现该服务，或者其配置不正确。
3.解决方案
3.1查看当前 crictl 配置
cat /etc/crictl.yaml
说明它正在使用 containerd，而 containerd 没有启用 CRI 支持就会报错。
3.2使用 ctr 命令测试
ctr plugins ls
3.3 使用 crictl 测试连接
sudo crictl --runtime-endpoint unix:///run/containerd/containerd.sock info
3.4编辑 containerd 的config.toml配置文件
vi /etc/containerd/config.toml
disabled_plugins = []
plugins."io.containerd.grpc.v1.cri"
enable_selinux = false
sandbox_image = "172.23.123.117:8443/kubesphereio/pause:3.9"
plugins."io.containerd.grpc.v1.cri".registry
plugins."io.containerd.grpc.v1.cri".registry.configs
plugins."io.containerd.grpc.v1.cri".registry.configs."172.23.123.117:8443"
tls = true
cert_file = "/etc/containerd/certs.d/172.23.123.117:8443/172.23.123.117.cert"
key_file = "/etc/containerd/certs.d/172.23.123.117:8443/172.23.123.117.key"
ca_file = "/etc/containerd/certs.d/172.23.123.117:8443/ca.crt"
skip_verify = false
plugins."io.containerd.grpc.v1.cri".registry.mirrors
plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry.k8s.io"
endpoint = ["https://172.23.123.117:8443"]
plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"
endpoint = ["https://172.23.123.117:8443"]
3.4创建证书目录并复制证书：
sudo mkdir -p /etc/containerd/certs.d/172.23.123.117:8443
sudo cp /etc/docker/certs.d/172.23.123.117:8443/ca.crt /etc/containerd/certs.d/172.23.123.117:8443/ca.crt
sudo cp /etc/docker/certs.d/172.23.123.117:8443/172.23.123.117.cert /etc/containerd/certs.d/172.23.123.117:8443/172.23.123.117.cert
sudo cp /etc/docker/certs.d/172.23.123.117:8443/172.23.123.117.key /etc/containerd/certs.d/172.23.123.117:8443/172.23.123.117.key
3.5重启
sudo systemctl daemon-reload
sudo systemctl restart containerd
3.6手动测试是否可以拉取镜像
sudo crictl pull 172.23.123.117:8443/kubesphereio/pause:3.9
