Linux centos7 implementa la extracción por lotes, el guardado de exportaciones y la compresión gzip. Ejemplo de código completo de la imagen de la ventana acoplable basada en python2

imágenes.txt contenido

harbor.xxx.com/kjgh/aaa:1.0.0
harbor.xxx.com/kjgh/bbb:1.0.0

Python2 extrae y exporta el código del programa de imagen acoplable (sin compresión)

El siguiente es un programa escrito en la sintaxis de Python 2, y el problema de codificación está resuelto:
si solo necesita nombrar el archivo tar de acuerdo con el nombre de la imagen, reescríbalo de la siguiente manera:

output_file = os.path.join(output_dir, "{}.tar".format(image_name.rsplit("/", 1)[-1]))

# -*- coding: utf-8 -*-
import subprocess
import os
import sys

reload(sys)
sys.setdefaultencoding('utf-8')

def pull_docker_image(image_name):
    try:
        # 检查镜像是否已存在
        check_output = subprocess.check_output(['docker', 'images', '-q', image_name])
        if check_output.strip():
            print("The image '{}' already exists.".format(image_name))
        else:
            # 拉取镜像
            subprocess.call(['docker', 'pull', image_name])
            print("The image '{}' has been pulled successfully.".format(image_name))
    except subprocess.CalledProcessError as e:
        print("An error occurred while pulling the image '{}': {}".format(image_name, e))

# 定义导出镜像的函数
def export_docker_images(output_dir):
    # 检查输出目录是否存在，如果不存在则创建
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)

    # 读取 images.txt 中定义的镜像列表
    with open('images.txt', 'r') as file:
        for line in file:
            image_name = line.strip()

            # 拉取镜像
            pull_docker_image(image_name)

            # 导出镜像为 tar 文件
            output_file = os.path.join(output_dir, "{}.tar".format(image_name.replace('/', '-')))
            subprocess.call(['docker', 'save', '-o', output_file, image_name])
            print("The image '{}' has been exported to '{}'.".format(image_name, output_file))

# 主程序
if __name__ == "__main__":
    # 指定导出目录
    output_directory = "exported_images"

    # 导出镜像
    export_docker_images(output_directory)

En esta versión, agregamos # -*- coding: utf-8 -*-para especificar la codificación del archivo como UTF-8. Además, usamos reload(sys)y sys.setdefaultencoding('utf-8')para establecer la codificación predeterminada en UTF-8 para resolver el problema del manejo de caracteres Unicode en Python 2.

Asegúrese de que Docker se haya instalado antes de ejecutar el programa y que el programa Python tenga permiso para ejecutar los comandos de Docker. Además, asegúrese de que images.txtel archivo exista y contenga la lista correcta de nombres de réplicas. La imagen exportada se guardará en el directorio de salida especificado.

Comprime cada tar en un archivo gz separado

# -*- coding: utf-8 -*-
import subprocess
import os
import sys
import tarfile
import gzip

reload(sys)
sys.setdefaultencoding('utf-8')

def pull_docker_image(image_name):
    try:
        # 检查镜像是否已存在
        check_output = subprocess.check_output(['docker', 'images', '-q', image_name])
        if check_output.strip():
            print("The image '{}' already exists.".format(image_name))
        else:
            # 拉取镜像
            subprocess.call(['docker', 'pull', image_name])
            print("The image '{}' has been pulled successfully.".format(image_name))
    except subprocess.CalledProcessError as e:
        print("An error occurred while pulling the image '{}': {}".format(image_name, e))

# 定义导出镜像的函数
def export_docker_images(output_dir):
    # 检查输出目录是否存在，如果不存在则创建
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)

    # 读取 images.txt 中定义的镜像列表
    with open('images.txt', 'r') as file:
        for line in file:
            image_name = line.strip()

            # 拉取镜像
            pull_docker_image(image_name)

            # 导出镜像为 tar 文件
            output_file = os.path.join(output_dir, "{}.tar".format(image_name.replace('/', '-')))
            subprocess.call(['docker', 'save', '-o', output_file, image_name])
            print("The image '{}' has been exported to '{}'.".format(image_name, output_file))

            # 压缩 tar 文件为 gzip
            gzip_file = "{}.gz".format(output_file)
            with open(output_file, 'rb') as f_in, gzip.open(gzip_file, 'wb') as f_out:
                f_out.writelines(f_in)
            
            # 删除原始的 tar 文件
            os.remove(output_file)
            print("The image '{}' has been compressed to '{}'.".format(image_name, gzip_file))

# 主程序
if __name__ == "__main__":
    # 指定导出目录
    output_directory = "exported_images"

    # 导出镜像
    export_docker_images(output_directory)

Combinar y comprimir múltiples tars espejo en un archivo gz

# -*- coding: utf-8 -*-
import subprocess
import os
import sys
import tarfile
import gzip

reload(sys)
sys.setdefaultencoding('utf-8')

def pull_docker_image(image_name):
    try:
        # 检查镜像是否已存在
        check_output = subprocess.check_output(['docker', 'images', '-q', image_name])
        if check_output.strip():
            print("The image '{}' already exists.".format(image_name))
        else:
            # 拉取镜像
            subprocess.call(['docker', 'pull', image_name])
            print("The image '{}' has been pulled successfully.".format(image_name))
    except subprocess.CalledProcessError as e:
        print("An error occurred while pulling the image '{}': {}".format(image_name, e))

# 定义导出镜像的函数
def export_docker_images(output_file):
    # 创建 tar 文件
    with tarfile.open(output_file, "w:gz") as tar:
        # 读取 images.txt 中定义的镜像列表
        with open('images.txt', 'r') as file:
            for line in file:
                image_name = line.strip()

                # 拉取镜像
                pull_docker_image(image_name)

                # 导出镜像为 tar 文件
                temp_file = "{}.tar".format(image_name.replace('/', '-'))
                subprocess.call(['docker', 'save', '-o', temp_file, image_name])
                print("The image '{}' has been exported to '{}'.".format(image_name, temp_file))

                # 添加到 tar 文件
                tar.add(temp_file, arcname=os.path.basename(temp_file))

                # 删除临时的 tar 文件
                os.remove(temp_file)
                print("The image '{}' has been added to the tar archive.".format(image_name))

    print("All images have been exported and compressed to '{}'.".format(output_file))

# 主程序
if __name__ == "__main__":
    # 指定导出的 tar.gz 文件
    output_file = "exported_images.tar.gz"

    # 导出并压缩镜像
    export_docker_images(output_file)