Jenkins和AWS interaction需要帮助

Question

我正在尝试让jenkins从以前的快照自动构建一个新的ec2实例。因此，从本质上讲，我希望Jenkins能够从我的快照创建一个新卷，然后将该卷附加到一个实例并引导它。这可能吗?？我花了几天时间搜索所有CI页面，但无法将其拼凑在一起来完成我想要的操作

Answer 1

我的方法是首先从快照创建一个卷，然后创建一个实例，然后将该卷附加到该实例。如下所示：

# Create a volume from a snapshot:
def createVolume(snapshot_id=None, volume_type=None, volume_size=None, region=None, az=None):
    say('Creating volume...', banner="*")
    snapshot_arg = ' --snapshot-id {}'.format(snapshot_id)
    if snapshot_id is None:
        snapshot_arg = ''

    volume_size = '' if volume_size is None else ' --size ' + volume_size
    cmd = 'aws ec2 create-volume --region ' + region + \
          ' --availability-zone ' + az + ' ' + \
          snapshot_arg + \
          ' --volume-type ' + volume_type + volume_size
    output, returncode = run(cmd, hide_command=g_hide_command, debug=g_args.debug)
    volume_id = json.loads(output)['VolumeId']
    size = json.loads(output)['Size']
    while True:
        cmd = 'aws ec2 describe-volumes --volume-ids ' + str(volume_id)
        output, returncode = run(cmd, hide_command=g_hide_command, debug=g_args.debug)
        state = json.loads(output)['Volumes'][0]['State']
        if state == 'available':
            say('Volume has been created: ' + str(volume_id))
            break
        else:
            say('Current State: ' + str(state))
            time.sleep(15)
    cmd = 'aws ec2 create-tags --resources ' + str(volume_id) + ' --tags Key=Name,Value=jenkins-volume'
    output, returncode = run(cmd, hide_command=g_hide_command, debug=g_args.debug)
    return volume_id, size

创建新卷后，您可以创建实例并将该卷附加到实例：

new_instance = createInstance(ami_id=g_args.ami_id,
                              instance_type=g_args.instance_type,
                              target_env=g_args.target_env,
                              ssh_user=g_args.ssh_user,
                              id_rsa=g_args.id_rsa,
                              key_name='jenkins.cloud',
                              tags_dict=tags,
                              security_group_ids=g_env_map[g_args.target_env]['jenkins-sg'],
                              instance_profile=instance_profile,
                              subnet_id=subnet_id,
                              debug=g_args.debug)

# Attach volume to this instance (we reset the new_instance variable because the EBS vol has been attached):
new_instance = attacheVolume(volume_id=volume_id, instance_id=str(new_instance['InstanceId']), region=g_env_map[g_args.target_env]['region'])

我没有放入各种函数的内容，比如createInstance和attachVolume (以及"say“和"run")，但是你已经明白了要点。