Question

我想并行启动一些EC2机器。到目前为止，我使用的是boto和fabric，但是串行执行需要很长时间才能启动并逐个配置它们。任何替代解决方案/工具吗？

Answer 1

amazon命令行工具支持实例数量的参数。

aws ec2 run-instances help
   --count (string)
      Number of instances to launch. If a single number is provided, it is
      assumed  to  be the minimum to launch (defaults to 1). If a range is
      provided in the form min:max then the first number is interpreted as
      the  minimum  number of instances to launch and the second is inter-
      preted as the maximum number of instances to launch.

如果您正在运行较旧的CLI：

ec2-run-instances
 -n, --instance-count MIN[-MAX]
      The number of instances to attempt to launch. May be specified as a
      single integer or as a range (min-max). This specifies the minimum
      and maximum number of instances to attempt to launch. If a single
      integer is specified min and max are both set to that value.

更新：根据boto ec2文档，您可以将min_count和max_count参数传递给run_instances命令，这也可以让您并行启动多个实例。

Answer 2

您可以使用CloudFormation启动固定大小的自动缩放组：

"MyFixedSizeGroup":{
        "Type":"AWS::AutoScaling::AutoScalingGroup",
        "Properties":{
            "LaunchConfigurationName":{"Ref":"GlobalWorkersSmallLaunchConf"},
            "AvailabilityZones" : [ "us-east-1a" ],
            "MinSize":"4",
            "MaxSize":"4",
            "DesiredCapacity":"4",
            "Tags":[{"Key":"Name", "Value":"worker instance", "PropagateAtLaunch":"true"}]          
        }           
}

和所需的启动配置，例如：

"GlobalWorkersSmallLaunchConf":{
        "Type":"AWS::AutoScaling::LaunchConfiguration",
        "Properties":{"KeyName":{"Ref":"MyKeyName"},
                      "ImageId":"ami-SomeAmi",
                      "UserData":{"Fn::Base64":{"Fn::Join":["",[{"Ref":"SomeInitScript"}]]}},
                      "SecurityGroups":[{"Ref":"InstanceSecurityGroup"}],
                      "InstanceType":"m1.small",
                      "InstanceMonitoring":"false"
        }           
}

您可以将其与boto或CLI

一起使用

BTW-它执行得更好，因为您向AWS服务发送了一个请求，该请求作为堆栈处理。终止实例（以及您要添加的任何其他资源）只需删除堆栈。

并行启动多个EC2实例

2 个答案: