Volumes attached after instance launch continue running. Amazon EC2 Hibernation. 05 Based on the chosen decommissioning strategy, perform one of the following sets of instructions: To stop an idle Amazon EC2 instance: Click on the Instance state dropdown button from the console top menu and select Stop instance. A compute environment is in the Enabled state and can accept jobs from the queue. So, just use Ctrl+C to stop the process. 06 On the Change termination protection configuration. Amazon EC2 Auto. Create an SQS queue for the termination messages. You can only terminate instance store-backed. Configure Lifecycle Hooks for your Autoscaling group. After you successfully stop the instance, you can terminate it. Khác với "stop", ch. 04 Select the Amazon EC2 instance that you want to protect against accidental termination. All of its Amazon EBS volumes remain attached, and you can start the instance again at a later time. With Stop Protection, customers with stateful workloads can safeguard data in instance store volume (s) from unintentional stop and terminate actions. Unfortunately by the time you have stopped/terminated the EC2 instance it has entered a shutting down state which would stop this script from running. Volumes attached after instance launch continue running. However, the AMI was never created. I tried using SNS and register a HTTP endpoint. stopとterminateの違い stop インスタンスを一時的に停止させる。. Note: Amazon EBS doesn't charge you when you detach a volume from an EC2 instance. [EC2] Force Terminate does not work when disableApiStop is set #7597. To protect Auto Scaling instances from manual termination, enable Amazon EC2 termination protection. Step 2: Create a Role: Navigate to Roles. if you want to skip the spot instance all you need to do this is figure out which one is spot instance. terminate ()) Then, from a terminal, we can pass instance ID (s) as a command line argument, to terminate these EC2 instances in the AWS console, using the following command: python. The script provides four options for managing EC2 instances: create, start, stop, and terminate. or invoke the function using any other supported method (or directly via the Lambda API) providing it's possible to configure a. The lifecycle hook puts the instance into a wait state ( Pending:Wait) and then performs a custom action. Login to AWS Management Console and navigate to EC2 dashboard. For information about what happens when an instance is hibernated, see Differences between reboot, stop, hibernate, and terminate. Hibernation provides you the convenience of pausing and resuming your workloads. Auto Scaling does not start/start instances. Because Amazon S3-backed AMIs can’t be stopped, they’re either running or terminated. To help expedite a resolution, include the instance ID, and describe the steps that you've already taken. 246k 25 390 481. The ECS agent running on the EC2 instance or the Fargate resource picks up the change in state of the task and performs the action such as internally calling “Docker stop container-id”. Amazon Virtual Private Cloud (Amazon VPC) enables you to provision a logically isolated section of the Amazon Web Services Cloud where you can launch Amazon Web Services resources in a virtual network that you’ve defined. terminate() terminate_instances. --lifecycle-hook-name my-lifecycle-hook. Create, terminate, start, stop or restart instances. But unable to stop the stop event. While these terms may sound similar, they have distinct implications for your infrastructure and costs. By default, you can terminate your instance using the Amazon EC2 console, command line interface, or API. Those are START,. disableApiTermination? Type: boolean | IResolvable (optional) If you set this parameter to true , you can't terminate the instance using the Amazon EC2. * - Effect: Allow Action: - ec2:StartInstances - ec2:StopInstances Resource: "*" Typically, the easiest way to create a policy is to copy an existing policy and make. Open the Billing and Cost Management console. I know how to start and stop ec2, example: start instance: #! /bin/bash aws ec2 start-instances --instance-ids i-1a1234. While you may think that both stopping and terminating are the same, there is a difference. If you stop an instance that is backed by EBS, the information on the root volume will still be in the same state when you start the machine again. To better understand the differences between the two volume types, see Storage options for your Amazon EC2 instances. We’re selecting AWS Service for Entity Type and ‘Lambda’ for Use Case. When the. You can specify that Amazon EC2 hibernates your Spot Instances when they are interrupted. You can only suspend an instance for up to 60 days. 2. At this stage, the instance is preparing to enter the running state. -1. systemd handles a graceful shutdown of the system. Select Manual or Automatic to execute the policy manually or automatically. 0. 1. I cannot run this script directly as a Lambda function because the script does some parallel processing which requires more RAM, so choosing a bigger AWS instance rather than writing it as a lambda function. I used following policy statement for this: {. 2. John Rotenstein. Prerequisites. Just to state the obvious for junior folks who might come across this: sudo shutdown now requires access to the operating system (via SSH keys, inbound security groups, etc), while aws ec2 stop-instances is an AWS CLI command which simply requires API authentication (via IAM credentials or STS tokens). Volumes attached after instance launch continue running. x contains a number of customizations to make working with Amazon EC2 instances, storage and networks easy. aws ec2 stop-instances --instance-ids i-1234567890abcdef0 --hibernate. create, terminate, start, stop or restart instances. Why does Python-Process on ec2 stop. Shuts down one or more instances. When Amazon EC2 interrupts a Spot Instance, it either terminates, stops, or. Search for the instance that you would like to delete and right click on the instance. By default, Amazon EC2 deletes all EBS volumes that were attached when the instance launched. AutoScaling Group is able to take care of this process for you. Select Amazon EC2 and select stopInstances action. Use EC2 Auto Scaling groups or EC2 Fleet to manage your aggregate capacity. So what you can do: check your snapshots and Volumes in the ec2 console. From What Is AWS Config?- AWS Config:. You can create a Network Load Balancer and make use of TLS termination in minutes! You can use the API ( CreateLoadBalancer ), CLI ( create-load-balancer ), the EC2 Console, or a AWS CloudFormation template. You can also get parameter values for AWS instances that are already running using the AWS command line interface: $ aws ec2 describe. Stop Instance. However, when you terminate the instance, it is transferred to a stopped state, and the EBS volumes attached to it are deleted and can never be recovered. To receive email notifications when your instance changes state, create an Amazon SNS topic and then create an EventBridge rule for the EC2 Instance State-change Notification event. It is also not possible to have a stop-protected filter because the DescribeInstanceAttribute API does not return a value for disableApiStop:Instances are either created or terminated based on this value. Accepted Answer. Specialist Solution Architect, EC2 Spot Instances In this blog post, I go over using Amazon EC2 Spot Instances on continuous integration and continuous deployment (CI/CD) workloads, via the popular open-source automation server Jenkins. Then in select target select All Apis and search for ec2. terminate EC2 actions. You have full control over the instance's lifecycle—you decide when to launch, stop,. After you remove load balancers and Elastic Load Balancing environments, you can stop or terminate Amazon EC2 instances. PDF. Auto Scaling is also good for ensuring the health of an application. $ aws ec2 modify-instance-attribute --instance-id instance_id --no-disable-api-termination. You can stop, start, and terminate EBS-backed instances. When state=running, state=stopped or state=restarted then either instance_ids or instance_tags is required. . An instance can’t be started from the terminated state. Terminate your instance, check it disappears along with the volume. aws ec2 stop-instances --instance-ids i-0123ab456c789d01e--force. To terminate a cluster with termination protection on with the old console. aws ec2 terminate-instances --region us-east-2 --instance-. Sorted by: 3. When you stop an EBS boot instance you are giving up the physical hardware (or slice of it) that the server was running on and EC2 is free to start somebody else's instance there. (Search for the API calls on the page) The only potentially useful condition key is ec2:ResourceTag/tag-key. 03 In the navigation panel, under Instances, choose Instances. aws ec2 stop-instances –instance-ids i-1a3b5c7d9ea0c1ef0. However I am not able to stop the instance - it has been stuck in the stopping state for hours. 1. Delete. Suspending an instance differs from stopping an instance in the following ways: Suspended instances preserve the guest OS memory, device state, and application state. Just to state the obvious for junior folks who might come across this: sudo shutdown now requires access to the operating system (via SSH keys, inbound security groups, etc), while aws ec2 stop-instances is an AWS CLI command which simply requires API authentication (via IAM credentials or STS tokens). By default, Amazon EC2 deletes all EBS volumes that were attached when the instance launched. Then I click Create in the Network. terminate_instances (instance_ids = ids) # Boto3 ec2. The following example stops three instances with the specified tag. You can terminate an instance using the AWS Management Console or the command line. When 'absent', instance_ids is required. Replace i-1234567890abcdef0 with the Instance ID of the instance you want to delete. Hint: type "g" and then "r" to quickly open this menu. You can then use shutdown -h now to terminate the instance. When an instance is stopped, the instance performs a normal shutdown, and then transitions to a stopped state. 2. In this article, I will go through some things you should consider when selecting an EC2 instance. I need to stop start multiple ec2 and run few command before and after ,using bash on the same manage server so no need to ssh. One of the key decisions you need to make is whether to stop or terminate your EC2 instances. AWS EC2 instance behind AWS ELB cannot get the real client's IP address. Volumes attached after instance launch continue running. 5. To add the Terminate, start, or stop an instance in EC2 action to a policy. Volumes attached after instance launch continue running. disable_api_stop - (Optional) If true, enables EC2 Instance Stop Protection. What Happens When EC2 Instances Are Discontinued? We’ll start with “stopped” to look at stop vs. On the dropdown labeled ‘Use Cases for other AWS. The Auto Scaling group responds to a scale-out event and begins launching an instance. C:> aws ec2 modify-instance-attribute --instance-id instance_id --no-disable-api-termination. Eventually I de-registered the AMI. Trend Question Official Event Official Column Opportunities Organization Advent Calendar. When an instance is terminated, the instance performs a normal shutdown, then the attached Amazon EBS volumes are deleted unless the volume’s deleteOnTermination attribute is set to false. A Spot Price is the hourly rate for a Spot instance. It does some process and it writes the result to the console and also to a log file. For Runtime,. Amazon Elastic Compute Cloud (Amazon EC2) provides on-demand, scalable computing capacity in the Amazon Web Services (AWS) Cloud. I would like to trap the EC2 stop/terminate event. Select it and add you instances IDs. EBS storage will persist if you stop the instance, and usually will also persist if you terminate it. Reboot: Rebooting an instance is equivalent to rebooting an operating system. When this option is used, file system integrity on the created image cannot be guaranteed. Terminated instances remain visible after termination (approximately one hour). The following code terminate an instance based on ID and Region. You can restart your instance at any time. You can only terminate instance store-backed instances. For more information, see Amazon EBS pricing. Share. Share. once task is completed i will issue shutdown command inside my vm. Repeat steps 1-7 to create another function. ec2 = boto3. My Termination Protection was set to Stop but apparently it overrides this setting. For more. Sorted by: 2. You can only terminate instance store-backed instances. Here I selected “Create Function. Sau khi "stop", chúng ta có thể quay trở lại và khởi động máy trên AWS. It will not change the configuration back to the default for the instance type. Each Weekly Must-Reads View All aws ec2 stop-instances --instance-ids i-0123ab456c789d01e--force. Do you need to permanently delete your EC2 instance? Or just temporarily stop it to save some money while you’re not using it? When you go to change the in. Reboot the instance from Windows "Start Menu" (or shutdown -r command in Linux) This will safely restart your EC2 instance. Get an email notification when an instance changes state. Earlier, you could. simple answer is - no you don't get charged for stopped EC2 instance. Ec2 also supports hibernating which is a quicker method of stopping/starting. When you stop an EC2 instance, it performs a normal shutdown on the instance and moves to a stopped state. We are now ready to insert our Python code into a Lambda function. Documentation: stop-instances — AWS CLI Command Reference. When an instance is stopped, the instance performs a normal shutdown, and then transitions to a stopped state. Volumes attached after instance launch continue running. The choice will come down to which features and. 2. The following code examples show how to terminate an Amazon EC2 instance. It can be set to either Stop or Terminate. If you don't have premium support, then "stuck" instances (where you can't. Spot instances are up to 90% cheaper than On-Demand instances, which can significantly reduce your EC2 costs. shutdown can only be executed with root permission so you need sudo right to be able to do so. Shutdown Behavior. You can only terminate instance store-backed. Terminating : You can also terminate the EC2 instance and terminating an instance means you are removing the instance from your AWS. – user1834095. Select Manual or Automatic to execute the policy manually or automatically. Instances backed by an instance store volume do not support the Stop action. User data is an instance attribute. Search for the instance that you would like to delete and right click on the instance. And you can trigger this script in case of any error/event is encountered. Manual termination through the Amazon EC2 console, the Amazon EC2 terminate-instances command, or the Amazon EC2 TerminateInstances action. Then, select your instance's group. “Stop”ping an EC2 instance: “Stop”ping an ec2 instance differs from “Terminate”ing an EC2 instance since you cannot restart a terminated instance. For more information, see Hibernate your On-Demand Instance or Spot Instance. If, after 10 minutes, the instance has not stopped, post a request for help on AWS re:Post. I have a couple of small EC2 instances (t1. Lambda code (set with IAM role AmazonEC2FullAccess): import boto3 def put_cpu_alarm (instance_id): cloudWatch = boto3. You should see the name of the region as it is deleted and a final done message when all the instances have been terminated. The instance exceeded its specified keep-alive parameters. In the Policy Information section, enter a unique name and an optional description for the policy. Step 3: Create the Amazon EC2 Auto Scaling group—launch template, instances, and network subnet selection. Sorted by: 119. When you stop an EC2 instance, the instance will be shutdown and the virtual machine that was provisioned for you will be permanently taken away and you will no longer be charged for instance usage. Metrics. I want to create IAM policy which will restrict group or users to stop/terminate two used EC2 instances but they can create their own EC2 instances. To better understand the differences between the two volume types, see Storage options for your Amazon EC2 instances. ec2-stop-instances <id_instancia> –region <region> I received the error: the filename, directory name or volume label syntax is incorrect. 1. . s = boto3. Its corresponding EBS volume is still attached to an EC2 instance, so you can restart the instance as well. Hibernation saves the contents from the instance memory (RAM) to your Amazon Elastic Block Store (Amazon EBS) root volume. You can add the stop, terminate, reboot, or recover actions to any alarm that is set on an Amazon EC2 per-instance metric, including basic and detailed monitoring metrics provided by Amazon CloudWatch (in the AWS/EC2 namespace), as well as any custom metrics that include the InstanceId dimension, as long as its value refers to a valid running. The front end sends a POST request to a lambda function, which writes the parameters to my S3 bucket. This operation is idempotent; if you terminate an instance more than once, each call succeeds. However, EBS volumes that are attached to instances continue to retain information and accrue charges, even when an instance is stopped. stop_instances(InstanceIds=instances) – robby. But are you sure you want to “stop” and not “terminate” it? What’s the difference? Stop. Be flexible about instance types and Availability Zones. The script provides four options for managing EC2 instances: create, start, stop, and terminate. Via Terminate from the running state, the instance will enter the shutting-down state, and finally the terminated state. The terminate_instances function is performed from the client, and requires you to specify the filter of which instances you need to terminate. If we start the EC2 instance, the data is restored on the EC2 instance. First, find the description and cause for the instance's termination: Open the Amazon EC2 console. create_instances(**y_kwargs) This contains a more detailed example and a longer list of available parameters. In this tutorial, you will use Terraform to destroy this infrastructure. You can stop an Amazon EBS-backed instance. To delete a key pair using the Console, follow these steps: 1. 1. You can stop, start, and terminate EBS-backed instances. aws autoscaling exit-standby --instance-ids YOUR-INSTANCE-ID --auto-scaling-group-name YOUR-ASG-NAME. I want to change the config of EC2 instance that created by Elastic BeanStalk, but when I stop instance ( from EC2 --> Running instance --> Action) instead of stopping, the instance state change to terminated and after that go to pending and running, so I can't change instance type. In the Bill details by service section, expand the Elastic Compute Cloud line item. In the Advanced settings pane, accept the defaults or specify the options for Shutdown behavior, Stop - Hibernate behavior, Placement group, T2/T3 Unlimited, Tenancy, and User data settings. Is it possible to write such script. You can't restart it, though you could always create a brand new one from scratch or from a saved snapshot. As part of a Stop or Stop-Hibernate and subsequent Start, the EC2 instance may move to a different AWS-managed host. As of today (Ansible 2. Posted On: Jul 29, 2021. A. ← suspend-processes. Stopping instances will definitely save money. I saw somewhere that I would only get. For example, "StartEC2Instances". 2. By default, the root Amazon Elastic Block Store (Amazon EBS) volume is automatically deleted. You can use Amazon EC2 to launch as many or as few virtual servers as you need, configure security and networking,. Amazon EC2 instances are a core component of AWS computing, and CloudWatch collects and processes metrics related to their health and performance. According to AWS Support, it is normal behavior to Terminate an instance when you tell it to Stop if it is part of an Auto Scaling group. Managing your EC2 instances on Amazon Web Services (AWS) requires careful consideration of various factors. To add the Terminate, start, or stop an instance in EC2 action to a policy. With the Instance ID in hand, you can now terminate the instance by running the following command: aws ec2 terminate-instances --instance-ids i-1234567890abcdef0. Step 2: Create an IAM policy and role. Amazon EC2 Auto Scaling might terminate instances in an Auto Scaling group for the following reasons: The instance is marked as unhealthy. stop instance: #! /bin/bash aws ec2 stop-instances -. 3. see the prerequisites in the Amazon EC2 User Guide for Windows Instances. For each PutMetricAlarm operation, you must specify either MetricName or a Metrics array. 1 Answer. For more information on what to expect when you switch to the old console, see Using the old console. See EC2's. Parameters: None. tenancy. can’t hibernate an instance that is in an Auto Scaling group or used by ECS. C:\> aws ec2 modify-instance-attribute --instance-id instance_id --no-disable-api-termination. 1k 29 29 gold badges 230 230 silver badges 325 325 bronze badges. This will force AWS Auto Scaling to terminate the instance. I need a single Windows CMD command that terminate all instances from Ohio region. When you stop an EC2 instance, it performs a normal shutdown on the instance and moves to a stopped state . By default, Amazon EC2 deletes all EBS volumes that were attached when the instance launched. Feb 4, 2021 at 15:19. Step 2: Create a Role: Navigate to Roles. But in your instance table if the Instance State column has the value terminated it means your instance is deleted and you can no longer use it. 2. If, after 10 minutes, the instance has not stopped, post a request for help on AWS re:Post. Instance termination. Amazon EC2 Auto Scaling is a fully managed service designed to launch or terminate Amazon EC2 instances automatically to help ensure you have the correct number of Amazon EC2 instances available to handle the load for your application. Google charges for the storage necessary to save instance memory. Selecting some options will default and/or force you to termination on stop. This email contains the details of the terminated instance, such as the instance ID and the reason that the instance was. py (or whatever your file is named. In AWS, the EC2 ( Elastic cloud computing) instance is called a VM (Virtual Machine). 2. You would need to check that the script has finished running, and then execute the command aws ec2 terminate-instances. delete the auto scaling by going to the left hand side of the EC2 dash board under AUTO SCALING > Auto Scaling Groups > select the check box Action > delete. Select ‘Terminate’ under ‘Instance State’. Reboot the instance from Windows "Start Menu" (or shutdown -r command in Linux) This will safely restart your EC2 instance. AWS Terminate or delete the EC2 instance example using AWS CLI command. 2. You can force stop an EC2 instance when the instance appears to be stuck in the stopping or pending state. I found this commands but its not working. Action examples are code excerpts from larger programs and must be run in context. Instances backed by an instance store volume do not support the Stop action. We’re selecting AWS Service for Entity Type and ‘Lambda’ for Use Case. When you stop an EC2 instance, the instance will be shutdown and the virtual machine that was provisioned for you will be permanently taken away and you will no longer be charged. Note By default, Amazon EC2 deletes the Amazon EBS root device volume at instance termination. Enable this option to protect your instance from any unintentional termination. Check the latest instance-controller logs and instance state logs when the instance-controller service is down. AWS OpsWorks Stacks automatically starts and stops. Also, don't want this instance to be running all the time as it is expensive. An auto-scaling group launches EC2 instances and it appears that instances that run roughly >24 hours begin to degrade in performance. For more information about the differences. stop ec2. To terminate an EC2 Instance from AWS CLI, run…The user (or process) is then responsible for completing the lifecycle action via an AWS API call, resulting in the shutdown of the terminated EC2 instance. An EC2 Windows instance can be stopped or rebooted either through AWS or the Windows operating system (OS). The following code examples show how to stop an Amazon EC2 instance. The Terminate, start, or stop an instance in EC2 action enables you to terminate, start, or stop an Amazon Elastic Compute Cloud (AWS EC2) instance for remediating an event. Below are the interview questions asked in major IT companies on EC2. You can now hibernate your newly launched instances running on T2 instance types. 4. Amazon EC2 automatically forces it to terminate within a few. If you stop the instance, data stored on the EBS volume is. Choose Create function. New – Hibernate Your EC2 Instances. I wrote a cron job on other system(ec2 intance) to stop this cronserver after 7:15 and start again @ 21:00. You can stop, start, and terminate EBS-backed instances. Yes, can able to terminate an EC2 instance by executing the below command. Stopping instances will definitely save money. . Your EBS boot volume (and other attached EBS volumes) are still preserved, though they aren't really tied to a physical or virtual server. Terminate—Removes instances from the Auto Scaling group when the group scales in, or when Amazon EC2 Auto Scaling chooses to terminate instances for other reasons, such as when an instance is terminated for exceeding its maximum lifetime duration or failing a health check. You can optionally set Timezone, Start date, End date. Hot. By default, Amazon EC2 deletes all EBS volumes that were attached when the instance launched. Volumes attached after instance launch continue running. The IPv6 address of. Auto-scale is specifically designed to solve scalein/scaleout. amazon. The EC2 instance will maintain it's existing public IP address. stevec stevec. If other arguments are provided on the command line, those values will. I also break down the steps required to adopt Spot Instances. hi how to start an instance and login. For example, the following Auto Scaling group has a minimum size of one instance, a desired capacity of two instances, and a maximum size of four instances. Follow. instances. In this section, we are going to see how to terminate multiple EC2 instances at the same time using the AWS CLI command. Go to IAM on your AWS and click “Policies” on the left side. If you had EBS Volume attached without flag for 'delete on termination' you can recover those data. Terminate instances accepts multiple. So, to stop the instance we started, we must add the. It can be enabled or disabled on a per instance basis at anytime. The instance-controller standard output shows that the service is terminated because there is insufficient memory. The EC2 instance will maintain it's existing public IP address. When you terminate an instance, it enters the shutting-down state and then the terminated state. You can stop, start, and terminate EBS-backed instances. 1. You can only terminate instance store-backed. However, EBS volumes that are attached to instances continue to retain information and accrue charges, even when an instance is stopped. You can’t use the Stop action to hibernate Spot Instances, but you can specify that Amazon EC2 should hibernate Spot Instances when they are interrupted. Next I tried to stop the ec2 instance. If you enable termination protection, you can't terminate the instance using the console, CLI, or API. This can occur for several reasons, including continued system or user activity on the volume. Part of AWS Collective. ec2:AllocateAddress: To allocate an Elastic IP address. In step 5, paste the following code into the editor pane of the code editor on the lambda_function tab: import boto3 region = 'us-west-1' instances. # aws ec 2 terminate-instances – instance-ids i -0 aac 8 d 3 e 627 de 822 a i. Start/Stop instances and auto-scale don't really fit together. Reduce usage of Amazon Elastic Compute Cloud (Amazon EC2) usage by starting and stopping EC2 automatically. As soon as the status of an instance changes to shutting-down or terminated, you stop incurring charges for that instance. Similarly following is the policy for start instances rest of the flow remains the same. argv [1:]: instance = ec2. Notice that you can't. Instead, the CLI is gathering a list of files and is issuing individual Copy commands to copy files from their current Key to the desired Key (Key = full path of filename). Complete the following steps so that this function starts your instances: In step 3, enter a different Function name. In this section, we are going to see how to terminate multiple EC2 instances at the same time using the AWS CLI command. instances = ['i-018b3ee8dd8b9fes5'] def lambda_handler(event,context): ec2. And select Create Image, do the following steps: Enter a name and description for the AMI. For more information, see Customizing the Termination Policy in the Amazon EC2 Auto Scaling User Guide. AWS CLI To force stop the instance using the console Open the Amazon EC2 console at In the navigation pane, choose Instances and. For example, you may remove a production environment from service, or manage short-lived. 5 to be precise), it is possible to do what you want without host_vars with the ec2_instance module (it's different from the ec2 module) For example, you want to terminate all ec2 instances with the tag-value pair: Usage:k8s-ansible, this is the task you'll need: ec2_instance: state: absent filters: tag:Usage: k8s. Expected behavior: my instance would get terminated after my job is. /myscript > /dev/null 2>&1 & and than I check if my script is running with ps -elf | grep python. To stop/terminate an EC2 instance that is not running within an AWS ASG, click the Actions dropdown button from the dashboard top menu, select Instance State and choose one of the following options: I. Those are START, STOP, REBOOT, Terminate. FYI, I created a Simple EC2 Stopinator in Lambda - DEV Community that can stop/terminate instances based on tag. Amazon EC2 Auto Scaling might terminate instances in an Auto Scaling group for the following reasons: The instance is marked as unhealthy. Today, Amazon EC2 announced the Stop Protection feature that enables customers to protect their instances from accidental stop actions. If you terminate the machine without taking a snapshot, even if it is backed by EBS, the storage inside the ephemeral disk will be lost. sudo shutdown now -h (The -h tells it to 'halt' the virtual hardware, which signals to the EC2 instance that the computer is now turned off, much like your home computer turns itself off after a.