下载配置 nexus-cli

看网上文档都用如下地址，但现在已经不能下载：

wget https://s3.eu-west-2.amazonaws.com/nexus-cli/1.0.0-beta/linux/nexus-cli
chmod +x nexus-cli

在 github 上下载：

wget https://github.com/heyonggs/nexus-cli/releases/download/0.0.3/nexus-cli-linux
mv nexus-cli-linux /usr/local/bin/nexus-cli
chmod +x /usr/local/bin/nexus-cli

查看帮助命令

[root@nexus ~]# nexus-cli --help
NAME:Nexus CLI - Manage Docker Private Registry on NexusUSAGE:nexus-cli [global options] command [command options] [arguments...]VERSION:0.0.2AUTHOR:Eugen Mayer, Karol Buchta, Mohamed Labouardy <->COMMANDS:configure  Configure Nexus Credentialsimage      Manage Docker Imageshelp, h    Shows a list of commands or help for one commandGLOBAL OPTIONS:--help, -h     show help--version, -v  print the version

配置凭证

[root@nexus ~]# nexus-cli configure
Enter Nexus Host: https://nexus.***.com
Enter Nexus Repository Name: docker-public
Enter Nexus Username: admin 
Enter Nexus Password: Removed potential trailing slash on Nexus Host URL, now: https://nexus.***.com
Configuration saved to succesfully to: /root/.nexus-cli

列出所有镜像

[root@nexus ~]# nexus-cli image ls
admin/admin
ai/chrome
ai/rockylinux-9-desktop
ai/ubuntu-desktop
......

列出特定镜像的所有 tag

[root@nexus ~]# nexus-cli image tags -name tools/nginx
Error parsing version2: "No Major.Minor.Patch elements found"
1.16
1.20.1
There are 2 images for tools/nginx

查看特定 tag 的信息

[root@nexus ~]# nexus-cli image info -name tools/nginx -tag 1.16
Image: tools/nginx:1.16
Size: 6645
Layers:sha256:54fec2fa59d0a0de9cd2dec9850b36c43de451f1fd1c0a5bf8f1cf26a61a5da4 27098254sha256:5546cfc927724eff7f5a134801904dee21064bd49912a7c4daa550175939cbce 23879166sha256:50f62e3cdaf71a6b4ba0cbe2115ce42d90cce8301cbf8220d2a99d19e0b85690 202

删除特定 tag 镜像

[root@nexus ~]# nexus-cli image delete -name tools/nginx -tag 1.16# 删除多个
nexus-cli image delete -name dockernamespace/yourimage -tag 1.16,1.20

在删除之前运行测试

nexus-cli image delete -name tools/nginx -keep 4 -dry-run

删除所有标签，但保留最近的4。注意，latest也算，被认为是“最近的”。

nexus-cli image delete -name dockernamespace/yourimage -keep 4

清理磁盘空间

创建两个Nexus Task 来清理物理空间。先运行 Purge unused docker manifests and images，再运行 Compact blob store，也可以直接手动执行清理。

如果没有这两个任务的可以直接创建

Compact blob store

Purge unused docker manifests and images

使用shell脚本每天定时清理一次

我的镜像tag格式：2024-07-01-15-04-22，大家可以根据自己的镜像tag修改脚本

#!/bin/bash# 获取所有镜像列表
images=$(nexus-cli image ls)# 遍历每个镜像
for image in $images; do# 获取镜像的tag列表tags=$(nexus-cli image tags --name "$image")# 遍历每个tagfor tag in $tags; do# 判断tag是否以 年-月-日-时 开头if [[ $tag =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}-[0-9]{2} ]]; thenecho "删除镜像: $image:$tag"nexus-cli image delete --name "$image" --tag "$tag"fidone
doneecho "删除完成."

添加执行权限

chmod +x del_nexus_docker.sh

添加定时任务，每天凌晨1点30执行一次

crontab -e30 01 * * * del_nexus_docker.sh  > /dev/null 2>&1 &

记得也要配置nexus task定时清理任务。