1.查看镜像
输入命令crictl images ls查看镜像
[root@master1 spider]# crictl images ls
IMAGE TAG IMAGE ID SIZE
registry.cn-beijing.aliyuncs.com/kubesphereio/cni v3.27.4 dc6f84c32585f 88.8MB
registry.cn-beijing.aliyuncs.com/kubesphereio/coredns 1.9.3 5185b96f0becf 14.8MB
registry.cn-beijing.aliyuncs.com/kubesphereio/k8s-dns-node-cache 1.22.20 ff71cd4ea5ae5 30.5MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-apiserver v1.26.15 61669ae28d85c 36.9MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-controller-manager v1.26.15 3b418eef6821c 33.5MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-controllers v3.27.4 6b1e38763f401 33.5MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-proxy v1.26.15 6c84132270a33 25.4MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-rbac-proxy v0.11.0 29589495df8d9 19.2MB
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-scheduler v1.26.15 5626d764f1326 17.9MB
registry.cn-beijing.aliyuncs.com/kubesphereio/node-exporter v1.3.1 1dbe0e9319764 10.3MB
registry.cn-beijing.aliyuncs.com/kubesphereio/node v3.27.4 3dd4390f2a85a 117MB
registry.cn-beijing.aliyuncs.com/kubesphereio/pause 3.9 e6f1816883972 322kB
2.导出镜像
[root@master1 ~]# ctr image export b.tar dc6f84c32585f
WARN[0000] DEPRECATION: The `mirrors` property of `[plugins."io.containerd.grpc.v1.cri".registry]` is deprecated since containerd v1.5 and will be removed in containerd v2.0. Use `config_path` instead.
ctr: image "dc6f84c32585f": not found
[root@master1 ~]# ctr image export b.tar registry.cn-beijing.aliyuncs.com/kubesphereio/cni:v3.27.4
WARN[0000] DEPRECATION: The `mirrors` property of `[plugins."io.containerd.grpc.v1.cri".registry]` is deprecated since containerd v1.5 and will be removed in containerd v2.0. Use `config_path` instead.
ctr: image "registry.cn-beijing.aliyuncs.com/kubesphereio/cni:v3.27.4": not found
可以看到提示镜像不存在,根据crictl命令查看到镜像是存在的
搜了一下两者的区别
ctr：containerd本身的CLI
crictl ：Kubernetes社区的专门CLI工具
Kubernetes的镜像是放在k8s.io的namespace下的
ctr -n k8s.io image export b.tar 镜像名称:版本号
[root@master1 ~]# ctr -n k8s.io image export b.tar registry.cn-beijing.aliyuncs.com/kubesphereio/cni:v3.27.4
WARN[0000] DEPRECATION: The `mirrors` property of `[plugins."io.containerd.grpc.v1.cri".registry]` is deprecated since containerd v1.5 and will be removed in containerd v2.0. Use `config_path` instead.
[root@master1 ~]# ls
111 a.tar dc6f84c32585f ksp-v341-v126.yaml kubekey-v3.1.6-linux-amd64.tar.gz mysql-secret.yaml test
anaconda-ks.cfg b.tar jiaoben.sh ksp-v341-v1288.yaml metrics-server-components.yaml Redis-cluster
application config.yaml kk kubekey mysql spider
[root@master1 ~]#
可以看到镜像已经导出