Softlayer API - 附加磁盘的图像捕获

Question

我在制作带有附加磁盘的虚拟机映像时遇到问题。我使用此处描述的捕获方法 https://softlayer-python.readthedocs.io/en/v3.3.0/api/managers/cci.html。虽然我将 additional_disks 设置为 False，但我的图像也包含可连接的设备。它会影响所有设备。有谁知道什么是错的？提前致谢。

我的脚本如下所示：

import SoftLayer
import argparse
import sys
import datetime

def initialize_sl_connection():
    with open('/etc/default/sl_snapshots', 'r') as f:
        for line in f:
            if 'SL_USERNAME' in line:
                SL_USERNAME = line.rstrip().split('=')[1]
            if 'SL_API_KEY' in line:
                SL_API_KEY = line.rstrip().split('=')[1]
    client = SoftLayer.Client(username = SL_USERNAME, api_key = SL_API_KEY)
    mgr_vs = SoftLayer.VSManager(client)
    mgr_image = SoftLayer.ImageManager(client)
    return (mgr_vs, mgr_image)

def get_instance_id_by_hostname_and_datacenter(mgr_vs, hostname, datacenter):
    instance = (mgr_vs.list_instances(hostname = hostname, datacenter = datacenter)[0:]+[{}])[0]
    return instance['id'] if instance.has_key('id') else None

def capture_sl_snapshot(mgr_vs, hostname, additionaldisks, instance_id):
    name = hostname + '_' + str(datetime.date.today()).replace('-','_')
    mgr_vs.capture(instance_id = instance_id, name = name, additional_disks = additionaldisks, notes = None)

def clean_old_sl_snapshots(mgr_image, hostname):
    image_list = mgr_image.list_private_images(name = hostname+'*')
    number_of_snapshots = len(image_list)
    if number_of_snapshots > 4:
        for i in range(0, number_of_snapshots-4):
            mgr_image.delete_image(image_list[i]['id'])

def main():
    parser = argparse.ArgumentParser(
        description='Automate creating SL snapshots with Ansible.')
    parser.add_argument(
        '--hostname',
        dest='hostname',
        help='Servers hostname.',
        required=True)
    parser.add_argument(
        '--datacenter',
        dest='datacenter',
        help='Datacenters name.',
        required=True)
    parser.add_argument(
        '--additionaldisks',
        dest='additionaldisks',
        help='Create snapshot for any additional disk attached to the machine.',
        required=True)
    args = parser.parse_args()
    mgr_vs = initialize_sl_connection()[0]
    mgr_image = initialize_sl_connection()[1]
    instance_id = get_instance_id_by_hostname_and_datacenter(mgr_vs, args.hostname, args.datacenter)
    if instance_id:
        capture_sl_snapshot(mgr_vs, args.hostname, args.additionaldisks, instance_id)
        clean_old_sl_snapshots(mgr_image, args.hostname)

if __name__ == "__main__":
    main()

我的电话是这样的：

/usr/bin/python /opt/scripts/sl_take_snapshot.py --hostname my_servers_hostname --datacenter lon02 --additionaldisks False

/etc/defaults/sl_snapshots 文件具有以下结构：

root@ip-10-0-3-84:~# cat /etc/default/sl_snapshots
SL_USERNAME=my_username
SL_API_KEY=my_key

提前感谢您提供的任何帮助。

Answer 1

问题似乎出在您解析值的方式上：

parser.add_argument(
        '--additionaldisks',
        dest='additionaldisks',
        help='Create snapshot for any additional disk attached to the machine.',
        required=True)

目前你的 parsign 值是一个字符串而不是 booelan，所以你会得到这样的东西：

额外磁盘 = 'False'

对于 python，空字符串被评估为 False，但其他所有内容都被评估为 True。所以这就是为什么你正在编码是捕获所有磁盘。

如果您不想捕获所有需要的磁盘，请从您的调用中删除“--additionaldisks False”。如果你想在你的通话中保留它，你需要更改你的解析代码，请参阅此以获取更多信息 Parsing boolean values with argparse

此致

Softlayer API - 附加磁盘的图像捕获

Softlayer API - Image captures with additional disks attached

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