在沒有Docker Registry時,可以通過docker save和docker load命令完成鏡像遷移的過程，先將鏡像保存為壓縮包，然后在其他位置再加載壓縮包。

將鏡像保存為壓縮包文件

[root@CentOS-7 ~]# docker images nginx REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/nginx latest 5766334bdaa0 2 weeks ago 182.5 MB [root@CentOS-7 ~]# [root@CentOS-7 ~]# docker save nginx | gzip > nginx-latest.tar.gz [root@CentOS-7 ~]# [root@CentOS-7 ~]# ls -lh nginx-latest.tar.gz -rw-r--r-- 1 root root 69M Apr 24 17:28 nginx-latest.tar.gz [root@CentOS-7 ~]#

加載鏡像

# docker images nginx REPOSITORY TAG IMAGE ID CREATED SIZE # # docker load -i nginx-latest.tar.gz 5d6cbe0dbcf9: Loading layer [==================================================>] 129.2 MB/129.2 MB aca7b1f22e02: Loading layer [==================================================>] 9.216 kB/9.216 kB 31fc28b38091: Loading layer [==================================================>] 61.24 MB/61.24 MB 97b903fe0f6f: Loading layer [==================================================>] 3.584 kB/3.584 kB Loaded image: docker.io/nginx:latest> ] 512 B/3.584 kB # # docker images nginx REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/nginx latest 5766334bdaa0 2 weeks ago 182.5 MB #

快捷命令

將鏡像從一個主機遷移到另一個主機：
docker save | bzip2 | ssh @ "cat | docker load"

[root@CentOS-7 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/hello-world latest 48b5124b2768 3 months ago 1.84 kB [root@CentOS-7 ~]# [root@CentOS-7 ~]# docker save hello-world | bzip2 | ssh root@10.140.1.120 "cat | docker load" root@10.140.1.120's password: Loaded image: docker.io/hello-world:latest [root@CentOS-7 ~]# [root@TestNode ~]# ip addr show enp0s3 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 08:00:27:3c:d9:72 brd ff:ff:ff:ff:ff:ffinet 10.140.1.120/24 brd 10.140.1.255 scope global dynamic enp0s3valid_lft 84898sec preferred_lft 84898secinet6 fe80::a00:27ff:fe3c:d972/64 scope link valid_lft forever preferred_lft forever [root@TestNode ~]# [root@TestNode ~]# docker images hello-world REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/hello-world latest 48b5124b2768 3 months ago 1.84 kB [root@TestNode ~]#

轉載于:https://www.cnblogs.com/anliven/p/6759585.html

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