简介：

Harbor私有仓库运行一段时间后，仓库中存有大量镜像，会占用太多的存储空间。直接通过Harbor界面删除相关镜像，并不会自动删除存储中的文件和镜像。需要停止Harbor服务，执行垃圾回收命令，进行存储空间清理和回收。

相关资料：

1、Harbor用户手册中的相关说明：

Next, delete the actual files of the repository using the registry's garbage collection(GC). Make sure that no one is pushing images or Harbor is not running at all before you perform a GC. If someone were pushing an image while GC is running, there is a risk that the image's layers will be mistakenly deleted which results in a corrupted image. So before running GC, a preferred approach is to stop Harbor first.

Run the below commands on the host which Harbor is deployed on to preview what files/images will be affected:

#要启用垃圾回收（GC），首先要关闭Harbor服务，然后再执行清理命令

#停止Harbor相关服务

$ docker-compose stop

#使用--dry-run参数运行容器，预览运行效果，但不删除任何数据

$ docker run -it --name gc --rm --volumes-from registry vmware/registry:2.6.2-photon garbage-collect --dry-run /etc/registry/config.yml

#NOTE: The above option "--dry-run" will print the progress without removing any data.

Verify the result of the above test, then use the below commands to perform garbage collection and restart Harbor.

#不使用--dry-run参数，将删除相关的文件和镜像，

$ docker run -it --name gc --rm --volumes-from registry vmware/registry:2.6.2-photon garbage-collect  /etc/registry/config.yml

#重新启动Harbor相关服务

$ docker-compose start

图1：01-先在Harbor UI图形界面中删除不需要的镜像

图2：02-停止Harbor服务，执行垃圾回收命令

2、数人云CTO肖总微信公号的文章：

图3：老肖说两句截图

图4：数人云CTO肖总-微信公众号-老肖说两句

参考链接：

Harbor用户指南

删除容器镜像仓库中的容器镜像到底有多难？

Garbage collection