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目录
注意：
脚本内容
执行效果
注意：
- 以下脚本为shell脚本通过docker/nerdctl进行镜像独立打包镜像的相关操作
- 脚本内仓库信息和镜像存取路径需自行更改
- 需自行创建images.txt并填写值，并且与脚本位于同级目录下
[root@master01 sulibao]# ll -rw-r--r-- 1 root root 3621 Feb 17 15:32 images_pull_save_load_tag_push.sh -rw-r--r-- 1 root root 906 Feb 17 15:11 images.txt - 该脚本读入单个选项和多个选项，多个选项以英文模式","相隔
- 该脚本不关系定时任务，使用交互显示输出信息，需要保留日志可自行添加定向
脚本内容
#!/bin/bash#定义原镜像仓库地址、login用户、login密码
registry_host="xxx"
registry_username="xxx"
registry_password="xxx"#定义镜像列表文件，此文件应和脚本位于同级目录下
IMAGE_LIST_FILE="images.txt"#定义镜像存取目录
SAVE_DIR=/data/sulibao/images_$(date +"%Y-%m-%d")#定义push的镜像仓库地址、login用户、login密码
des_registry_host="192.168.2.190:5000"
des_registry_username="xxx"
des_registry_password="xxx"#环境准备，登录原镜像仓库，确认镜像列表文件存在
prepare_environment() {mkdir -p "$SAVE_DIR"local login_output=$(docker login "$registry_host" -u "$registry_username" -p "$registry_password" 2>&1)if [ $? != 0 ]; thenecho "Login error: $login_output"echo "exit!!!"return 1fiif [ ! -f "$IMAGE_LIST_FILE" ]; thenecho "指定的镜像列表文件 $IMAGE_LIST_FILE 不存在，请检查文件和权限!"exit 1elif [ ! -s "$IMAGE_LIST_FILE" ]; thenecho "指定的镜像列表文件 $IMAGE_LIST_FILE 为空，请确保文件包含有效的镜像列表信息!"exit 1fireturn 0
}#拉取镜像
pull_images() {echo "开始拉取镜像!"while IFS= read -r image; doif [[ ! -z "$image" ]]; thenecho "Pulling image: $image"docker pull "$image"if [ $? != 0 ]; thenecho "拉取镜像 $image 失败!"fifidone < "$IMAGE_LIST_FILE"echo "镜像拉取完成!"
}#保存镜像
save_images() {echo "开始保存镜像!"while IFS= read -r image; doif [[ ! -z "$image" ]]; thenlocal image_file=$(echo "$image" | tr '/:' '_')echo "Saving image: $image to $SAVE_DIR/$image_file.tar"docker save -o "$SAVE_DIR/$image_file.tar" "$image"if [ $? != 0 ]; thenecho "保存镜像 $image 失败!"fi#docker rmi "$image" #此处涉及有一个镜像遍历删除，在保存镜像包后删除镜像，如需要请自行开启fidone < "$IMAGE_LIST_FILE"echo "镜像保存完成!"
}#导入镜像
load_images() {if [ -z "$(find "$SAVE_DIR" -mindepth 1 -print -quit)" ]; thenecho "镜像存取目录 $SAVE_DIR 中未发现镜像文件，请检查路径!"exit 1filocal des_login_output=$(docker login $des_registry_host -u $des_registry_username -p $des_registry_password 2>&1)if [ $? != 0 ]; thenecho "Login error: $des_login_output"echo "exit!!!"exit 1fiecho "开始导入镜像!"for image_file in "$SAVE_DIR"/*.tar; doif [ -f "$image_file" ]; thenecho "正在导入镜像 $image_file"docker load -i "$image_file"if [ $? -ne 0 ]; thenecho "导入镜像 $image_file 失败!"fifidoneecho "所有 .tar 镜像导入完成!"
}#替换tag并推送到目标镜像仓库
tag_and_push_images() {echo "开始批量修改镜像标签并推送!"while IFS= read -r image; doif [ -n "$image" ]; thenimage_suffix="${image#*/}"new_image="${des_registry_host}/${image_suffix}"echo "正在为 $image 添加新标签 $new_image"docker tag "$image" "$new_image"if [ $? -ne 0 ]; thenecho "为 $image 添加新标签 $new_image 失败!"continuefiecho "正在推送新镜像 $new_image"docker push $new_imageif [ $? -ne 0 ]; thenecho "推送新镜像 $new_image 失败!"fidocker rmi $new_imagefidone < "$IMAGE_LIST_FILE"
}#操作选项
show_menu() {echo "Select the action you want to perform:"echo "1.Pull images."echo "2.Save images to $SAVE_DIR"echo "3.Load images from $SAVE_DIR"echo "4.Replace tag for images and push to target registry"echo "5.Exit."read -p "Please enter the operation number:" choiceIFS=',' read -ra choices <<< "$choice"for choice in "${choices[@]}"; docase $choice in1)pull_images;;2)save_images ;;3)load_images;;4)tag_and_push_images;;5) echo "You have exited the program."exit 0;; *)echo "Invalid input, please enter option number."show_menu;;esacdone
}prepare_environment
show_menu执行效果
- 完整执行过程
[root@master01 sulibao]# bash images_pull_save_load_tag_push.sh
Select the action you want to perform:
1.Pull images.
2.Save images to /data/sulibao/images_2025-02-17
3.Load images from /data/sulibao/images_2025-02-17
4.Replace tag for images and push to target registry
5.Exit.
Please enter the operation number:1,2,3,4开始拉取镜像!
Pulling image: xxx/nginx:1.26.3
1.26.3: Pulling from xxx/nginx
Digest: sha256:52892d0d4f284526aa1d72ac42fd194c3e887580f60080ded2686d49037c6941
Status: Image is up to date for xxx/nginx:1.26.3
xxx/nginx:1.26.3
......
镜像拉取完成!开始保存镜像!
Saving image: xxx/nginx:1.26.3 to /data/sulibao/images_2025-02-17/xxx_nginx_1.26.3.tar
......
镜像保存完成!开始导入镜像!
正在导入镜像 /data/sulibao/images_2025-02-17/xxx_nginx_1.26.3.tar
Loaded image: xxx/nginx:1.26.3
......
所有 .tar 镜像导入完成!开始批量修改镜像标签并推送!
正在为 xxx/nginx:1.26.3 添加新标签 192.168.2.190:5000/su03/nginx:1.26.3
正在推送新镜像 192.168.2.190:5000/su03/nginx:1.26.3
The push refers to repository [192.168.2.190:5000/su03/nginx]
d9c572c95560: Layer already exists
8190a7b44dae: Layer already exists
a676f50129b7: Layer already exists
867f455c499d: Layer already exists
043f2436492e: Layer already exists
263be8d15880: Layer already exists
7914c8f600f5: Layer already exists
1.26.3: digest: sha256:ed94607a3100cd7274aa915678f8e6d1effba2919198044654000383d77035ac size: 1778
Untagged: 192.168.2.190:5000/su03/nginx:1.26.3
Untagged: 192.168.2.190:5000/su03/nginx@sha256:ed94607a3100cd7274aa915678f8e6d1effba2919198044654000383d77035ac[root@master01 sulibao]# ll images_2025-02-17/
total 1290584
-rw------- 1 root root 781347328 Feb 17 16:35 xxx_mysql_8.0.41.tar
-rw------- 1 root root 196080128 Feb 17 16:35 xxx_nginx_1.26.3.tar
-rw------- 1 root root 344122368 Feb 17 16:35 xxx_postgresql_13.16.0.tar- 若镜像列表文件不存在或为空
[root@master01 sulibao]# bash images_pull_save_load_tag_push.sh
指定的镜像列表文件 images.txt 不存在，请检查文件和权限![root@master01 sulibao]# bash images_pull_save_load_tag_push.sh
指定的镜像列表文件 images.txt 为空，请确保文件包含有效的镜像列表信息!- 仅仅需要执行load_image时，请确保镜像存取目录中存在有你需要的镜像包。无论是你手动存放的包还是通过脚本pull_and_save的包，需要以".tar"为后缀，若后缀不同，请自行修改脚本。
[root@master01 sulibao]# bash images_pull_save_load_tag_push.sh
Select the action you want to perform:
1.Pull images.
2.Save images to /data/sulibao/images_2025-02-17
3.Load images from /data/sulibao/images_2025-02-17
4.Replace tag for images and push to target registry
5.Exit.
Please enter the operation number:3
镜像存取目录 /data/sulibao/images_2025-02-17 中未发现镜像文件，请检查路径![root@master01 sulibao]# ll #此时仅有prepare_environment函数创建的镜像存取目录，实际上无数据，执行失败的
-rw-r--r-- 1 root root 4695 Feb 17 16:45 images_pull_save_load_tag_push.sh
-rw-r--r-- 1 root root 159 Feb 17 16:53 images.txt
drwxr-xr-x 2 root root 6 Feb 17 16:54 images_2025-02-17