如何在升级后从旧安装程序中删除映像

如果在执行升级后遇到映像漏洞或存储消耗问题，可以从旧的安装程序中删除映像。

要执行此可选的升级后操作，请执行以下步骤：

1. 根据以下脚本中的集群配置更新 IMG、TAG、USER、PASS、registry 和 latest_image_json，然后运行该脚本：

   #!/bin/bash
   
   ### Please change below variables as required
   IMG=<E.g. dataservice/dataservice-designer>
   TAG=<E.g. v20231116-tag>
   USER=<E.g. "admin">
   PASS=<E.g. "password">
   registry=<E.g. "registry.mycluster.com">
   latest_image_json=<E.g. "/opt/UiPathAutomationSuite/UiPath_Installer/versions/docker-images.json">
   ####
   
   [[ -f "${latest_image_json}" ]] || {
   	echo "File "$latest_image_json" doesn't exist"
   	exit 1
   }
   
   cat "${latest_image_json}" | tr -d '",' | grep -w "${IMG}:${TAG}" >> /dev/null && {
   	echo "Image ${IMG}:${TAG} is being used in cluster. Will skip the deletion."
   	exit 0
   }
   
   echo "Deleting image ${IMG}:${TAG}"
   
   cred="-u ${USER}:${PASS}"
   
   for i in `curl -k -H 'Accept: application/vnd.docker.distribution.manifest.v2+json' $cred "https://$registry/v2/$IMG/manifests/$TAG" | jq -r '.layers | .[] | .digest'`; do
   	curl -k  -H "Accept: application/vnd.docker.distribution.manifest.v2+json"  $cred -X DELETE "https://$registry/v2/$IMG/manifests/$i"
   done
   
   for i in `curl -k -H 'Accept: application/vnd.docker.distribution.manifest.v2+json' $cred "https://$registry/v2/$IMG/manifests/$TAG" | jq -r '.config.digest'`; do
   	curl -k  -H "Accept: application/vnd.docker.distribution.manifest.v2+json"  $cred -X DELETE "https://$registry/v2/$IMG/manifests/$i"
   done

2. 重新启动注册表 Pod 以执行垃圾收集，或在注册表 Pod 中执行并使用以下命令运行垃圾收集：

   registry garbage-collect /etc/docker/registry/config.yml