Harbor私有倉庫中如何完全刪除鏡像釋放存儲空間？

簡介：

Harbor私有倉庫運行一段時間後，倉庫中存有大量鏡像，會佔用太多的存儲空間。直接經過Harbor界面刪除相關鏡像，並不會自動刪除存儲中的文件和鏡像。須要中止Harbor服務，執行垃圾回收命令，進行存儲空間清理和回收。

相關資料：

一、Harbor用戶手冊中的相關說明：

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:

#要啓用垃圾回收（GC），首先要關閉Harbor服務，而後再執行清理命令

#中止Harbor相關服務

$ docker-compose stop

#使用--dry-run參數運行容器，預覽運行效果，但不刪除任何數據

$ 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參數，將刪除相關的文件和鏡像，

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

#從新啓動Harbor相關服務

$ docker-compose start

圖1：01-先在Harbor UI圖形界面中刪除不須要的鏡像

圖2：02-中止Harbor服務，執行垃圾回收命令

二、數人云CTO肖總微信公號的文章：

圖3：老肖說兩句截圖

圖4：數人云CTO肖總-微信公衆號-老肖說兩句

參考連接：

Harbor用戶指南

https://github.com/vmware/harbor/blob/master/docs/user_guide.md

刪除容器鏡像倉庫中的容器鏡像到底有多難？

http://mp.weixin.qq.com/s?__biz=MzA4ODgwNTk1NQ==&mid=2649949694&idx=1&sn=eda4513942458714a1eb89aaa25c9954&chksm=882322d2bf54abc4cb4e5c37fe348e2849c14f3d7e2897a0d839a045d8789640a1b99ca26d44&mpshare=1&scene=2&srcid=0226hpbvbowRZphA0jkqkTlq&from=timeline#rd

Garbage collection

https://github.com/docker/docker.github.io/blob/master/registry/garbage-collection.md