一键备份所有docker镜像

新建脚本并赋予权限

chmod +x export_images.sh

sed 's/.*///' 用于从仓库名称中删除斜杠 / 前的所有字符。这样，生成的备份文件名将不包含镜像来源仓库。

#!/bin/bash

# Define the output directory
output_dir="image_backups"

# Create the output directory if it doesn't exist
mkdir -p $output_dir

# Get a list of all local Docker images
images=$(docker images --format "{{.Repository}}:{{.Tag}}")

# Loop through the list of images and export each one
for image in $images; do
    # Extract the repository and tag from the image name
    repository=$(echo $image | cut -d':' -f1)
    tag=$(echo $image | cut -d':' -f2)
    
    # Remove characters before the last '/' in the repository name
    repository=$(echo $repository | sed 's/.*\///')
    
    # Define the output filename
    output_file="${output_dir}/${repository}_${tag}.tar"

    # Export the image to the output file
    docker save -o $output_file $image
done

一键恢复镜像（带tag）

新建脚本并赋予权限

chmod +x import_images.sh

这个脚本将批量导入指定目录中的备份文件，并将它们还原为 Docker 镜像。在还原时，脚本将使用备份文件的文件名来确定每个镜像的名称和标签，并将其导入到 Docker 中

#!/bin/bash

# Define the directory containing the backup files
backup_dir="image_backups"

# Get a list of all backup files in the directory
backup_files=$(find $backup_dir -type f -name "*.tar")

# Loop through the list of backup files and import each one
for backup_file in $backup_files; do
    # Extract the repository and tag from the backup file name
    filename=$(basename $backup_file)
    repository=$(echo $filename | cut -d'_' -f1)
    tag=$(echo $filename | cut -d'_' -f2 | cut -d'.' -f1)
    
    # Define the image name
    image_name="${repository}:${tag}"

    # Import the backup file as a Docker image
    docker load -i $backup_file
    
    # Optionally, tag the imported image with its original name
    docker tag $(docker images -q | head -n 1) $image_name
done

版本二

  1. 新建导出命令
#!/bin/bash

# 获取镜像列表并将其保存到 image_list.txt 文件中
docker images --format "{{.Repository}}:{{.Tag}}" > image_list.txt

# 从镜像列表文件中逐行读取镜像名称，并导出镜像
while read -r image_name; do
    # 分别将斜杠替换为破折号，冒号替换为下划线，点替换为逗号
    sanitized_name="${image_name//\//-}"
    sanitized_name="${sanitized_name//:/_}"
    sanitized_name="${sanitized_name//./,}"
    
    docker save -o "${sanitized_name}.tar" "$image_name"
done < image_list.txt

echo "镜像导出完成！"
  1. 导入镜像

新建导入脚本

#!/bin/bash

# 获取当前目录下所有的 tar 归档文件
tar_files=(*.tar)

# 逐个加载恢复镜像
for tar_file in "${tar_files[@]}"; do
    docker load -i "$tar_file"
done