ec2 user data script not running ec2 user data script not running

it to, or if you just want to verify that your script completed without . Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. What sort of strategies would a medieval military use against a fantasy giant? is not the right way to install npm. I have a step function that kicks off a python script in EC2. /var/log/cloud-init.log At a minimum, you should connect to the instance immediately after launch and change the password interactively. In my case, I have also tried removing /var/lib/cloud directory, but still it failed to execute user-data in our scenario. Awesome content. Setting up a Node.js app on a Linux AMI on an AWS EC2 instance with Nginx | by Nishank Jain | Medium 500 Apologies, but something went wrong on our end. Thank you. Error using SSH into Amazon EC2 Instance (AWS). Before you can use this file with the AWS CLI, you must remove the first (BEGIN CERTIFICATE) and last SCARLETEEL: Operation leveraging Terraform, Kubernetes, and AWS for Some are able to get it to work without it, not sure why. User data can be used on both Linux and Windows systems. Follow the procedure for launching an If you are unable to see the PHP information page, About an argument in Famine, Affluence and Morality. Note:User data scripts run as root user so you dont need to specifysudowith your commands. Log EC2 Linux user data and send it to the console log when running By default, user data scripts and cloud-init directives run only during the boot cycle when you first launch an instance. You should see the PHP information page. base64 command to decode it. There is an official documentation page now.. After all the attempts this finally worked for me.. Unfortunately I cannot share the script due to confidentiality so if any has any tips on what could possible be wrong I'd love to hear from you. command as follows: To retrieve the user data for an instance, use the describe-instance-attribute command. Here is the code to reactivate start on windows using powershell: (I know the question focus linux, but it could help others ). At least that's how it is in Linux, I guess on Windows it would be similar. on Amazon EC2 with AWS CloudFormation in the AWS CloudFormation User Guide. User data is treated as opaque data: what you give is what you get back. To troubleshoot issues on your EC2 instance bootstrap without having to access the instance through SSH, you can add code to your user-data bash script that redirects all the output both to the /var/log/user-data.log and to /dev/console.When the code is run, you can see your user-data invocation logs in your console. Step 2. Running Docker on AWS EC2. Run commands on your Linux instance at launch Specify User Data while launching EC2 Instance Launch an EC2 instance with Linux 2 AMI. Make sure that the latest version of cloud-init is installed and functioning properly on your EC2 instance. without the #cloud-boothook it does not work, but with it, it works. So, that EC2 User data script is only run once and when it first starts, and then will never be run again. By default, it is enabled to yes, which means that once we terminate our EC2 instance, then this volume is also going to be deleted. Why don't you echo out some progress information in your userdata script, step by step, and then check the console output afterwards? Run a bash script after EC2 instance boots - Server Fault The following is example output with the user data base64 encoded. adds to the amount of time it takes to boot the instance. Step 1. The typical answer is to use EC2 User Data, but this doesn't seem to work for me. 3. Amazon Linux instances, see cloud-init. Continue to add echo before each command and confirm how far it's running, This was a lifesaver for me - thanks. ncdu: What's going on with this second size column? Have a look on the script below in case you need that. Do new devs get fired if they can't solve a certain bug? Finally, we can review everything we have created and launch this instance. You log clearly says that you don't have npm and node installed so you need to pass installation instruction to the script as well. amazon ec2 - how to get status of a script running in EC2 and use that Add a local rdp user via user data at launch of a Windows EC2 instance. AWS support for Internet Explorer ends on 07/31/2022. Select the instance and choose Instance state, And then we have to select key pair formats. Thanks for contributing an answer to Stack Overflow! If you wanted to compare the instance types click on Compare Instance types it shows you all the types of instances as well as how much memory they have and so on. Once stack is successfully created, you can check . On a Linux computer , use the --query option to get the encoded user data and the text/cloud-config and text/x-shellscript content-types in a mime-multi part EC2 - Instance user data fail - [WARNING]: Failed to run module scripts The permissions you Refresh the page, check Medium 's site. (/var/log/cloud-init-output.log), and look for is stored in another file. How to Provide the Static IP to a Docker Container? This is a major lifesaver for trouble shooting user data issues. User data doesn't run on subsequent reboots or starts. I start up a few long running processes with this script, and would like them to be non-privileged processes. To learn more, see our tips on writing great answers. archive that includes a cloud-init data section with the Paste the content of the user data script in a file named ec2-user-data.sh. 5. appropriate AWS credentials required by the user data script to issue the API For more information about other distributions, such as their support Run user data after the initial launch of your EC2 instance The current state of the instance. You can also pass this data into the launch instance A place where magic is studied and practiced? For more and the files contained within it. It stands for Elastic Compute Cloud. Server Fault is a question and answer site for system and network administrators. Also, there's no need for sudo in userdata as it's already running as root. Ec2HandleUserDataCreates and runs scripts created by the user on the first launch of an instance after Sysprep is run. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. procedure. Do I need a thermal expansion tank if I already have a pressure tank? User data formats# User data that will be acted upon by cloud-init must be in one of the following types. The #cloud-boothook solution is not working for me. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Bootstrapping means launching commands when the machine starts. exit 0. You can't find the user data logs. to the instance, examine the output log file So the EC2 User Data has a very specific purpose. Guide to running EC2 User Data scripts as a non-root user? I have an EC2 instance which I bootstrapped with some user data that runs some updates and installs some other software on startup. What is EC2 User Data Simply put User Data is a set of commands which will be executed on an EC2 instance when it is first launched. What we have did is we have created script with above commands and made that script to run while system boots. Start the instance. Asking for help, clarification, or responding to other answers. The script is not deleted after it is run. For information For more I have noticed that UserData scripts are not being executed. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. /var/lib/cloud/instances/instance-id/. echo Run yum update -y. amazon ec2 - user data scripts not working for me during starting of the EC2 instance - Server Fault user data scripts not working for me during starting of the EC2 instance Ask Question Asked 8 months ago Modified 8 months ago Viewed 708 times 0 All, I have user data script like below. In the navigation pane, choose Instances. For more information about It should not stuck on modules:config. On Windows, you can use the AWS Tools for Windows PowerShell instead of using the AWS CLI. Find centralized, trusted content and collaborate around the technologies you use most. EC2 User Data Script is not running the last bash command which starts a python file on startup. You can distribute load across machines( Elastic Load Balancer), You can scale services using an auto-scaling group or ASG. Thanks for contributing an answer to Stack Overflow! amazon-ec2 cloud-init Share Improve this question Connect and share knowledge within a single location that is structured and easy to search. How do I connect these two faces together? Then you need to choose a key pair type (RSA encrypted or ED25519 encrypted), here well be using the RSA encrypted. Note: If Stop is not activated, either the instance is already stopped, or its root device is an instance store volume. But I have came up with different solution for it. Use the --attribute and --value parameters to use the encoded text file Instance types are going to differ based on the number of CPUs they have, the amount of memory they have, and how much they cost. Not the answer you're looking for? The #cloud-boothook make it works because it changes the script from a user_data mechanism to a cloud-boothook one that runs on each start. file the script created. You can access the log files at the following locations: EC2Launch v2: C:\ProgramData\Amazon\EC2Launch\log\agent.log, EC2Launch: C:\ProgramData\Amazon\EC2-Windows\Launch\Log\UserdataExecution.log, EC2Config: C:\Program Files\Amazon\Ec2ConfigService\Logs\Ec2ConfigLog.txt. But dont worry, If you want it in JSON, I will provideJSONtemplate as well. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Get awesome AWS learning material delivered straight to your inbox. How much storage space ( If you want it to be attached through the network then we will use EBS or EFS If you want it to be hardware attached. examine the cloud-init output log file (/var/log/cloud-init-output.log), EC2 AMI version. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It will execute the script on the first launch of our EC2 instance and only on the first launch. If you have Mac or Linux or Windows 10 then you can use the .pem format. Edit: I should also add that in the user data the machine cd's into the directory where the python file is and runs the command to execute it. its user data. AWS OpsWorks. Supported browsers are Chrome, Firefox, Edge, and Safari. You can specify below user data to achieve that. Do you need billing or technical support? How can I troubleshoot this and what am I missing? Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? error messages in the output. For more information, see the following: Deploying applications How to Pass the Query String Parameters to AWS Lambda Function or HTTP Endpoint? I have tested it on Ubuntu. Open the Amazon EC2 console at To learn more, see our tips on writing great answers. There is a public IPv4 address, this is what were going to use to access our EC2 instance. in the AWS Knowledge Center. Cloud config data# Cloud-config is the simplest way to accomplish some things via user data. before you create an AMI from the instance. So lets go ahead and see the step by step instruction to execute EC2 user data script using CloudFormation. For more information, see User data runs as root anyway. On a Windows computer, use the certutil command to encode the user data. And relaunch. The cloud-init directives creates a file (/test-cloudinit/cloud-init.txt), The commands to be included in the user-data will be shell commands, more specifically, bash. Click here to return to Amazon Web Services homepage. information about the configuration tasks that the cloud-init package performs for Stop your instance. User data scripts require a specific syntax. Check your system log and you should see that Echo in the Management console, Also add this https://aws.amazon.com/premiumsupport/knowledge-center/ec2-linux-log-user-data/. About an argument in Famine, Affluence and Morality. Short story taking place on a toroidal planet or moon involving flying. rev2023.3.3.43278. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? operating system of your instance. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. > "C:\Python27\Scripts" by shift button and right click. I'm using CentOS and the logic for userdata there is simple: In the file /etc/rc.local there is a call for a initial.sh script, but it looks for a flag first: initial.sh is the file that does the execution of user-data, but in the end it deletes the flag. feedback (such as yum update without the -y wizard. The examples in this topic assume the following: Your instance has a public DNS name that is reachable from the internet. But the user-data script is working if I launch an new instance with Amazon linux(2014.09.01), but I'm not sure what difference between my AMI (based on Amazon linux) and Amazon linux. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Step 10. For more information, see Add rules to a security group. Also, because the I removed only instance(s) from the folder /var/lib/cloud/ and then it ran fine for me, Then I retried my user data script and it worked fine. Troubleshooting EC2 startup scripts passed as user-data What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? botocore.exceptions.ParamValidationError: Parameter validation failed: Hi, Hi@Lakshminarayanan, views aws devops-tools devops aws-ec2 aws-s3 aws-api You should allow a few minutes of extra time for the tasks to complete install libssl-devel-0.9.8d-alt4.x86_64 in linux, Error installing dotnet "Requires openssl-libs", Getting broken package while installing MySQL 5.7 on AWS EC2 user (Amazon Linux). Not the answer you're looking for? EC2 - Instance user data fail - [WARNING]: Failed to run module scripts-user. Also on PSFTW Deploy SMA Server via Powershell DSC 7 years ago Hi, I'm currently sitting on my plane from Minneapolis to Dallas. User_data is run only at the first start up. Work with instance user data - Amazon Elastic Compute Cloud By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What data is stored in Ephemeral Storage of Amazon EC2 instance? Lets go to view all instances and refresh the page its gonna take about 10, 15 seconds for the instance to come up and this is the whole power of the Cloud we are able to create an instance or 100 of them very quickly in less than 10 seconds without us owning any single server. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. user_data = "$ {file ("ec2-user-data.sh")}" the file (path) functions read the user-data script file given in the path and return as a string. directory on any instance launched from the AMI. Note: It's a best practice to create a snapshot of your instance before proceeding with the following resolution. {AWSTemplateFormatVersion: 2010-09-09,Description: Template to Create an EC2 instance in a VPC,Parameters: {VpcId: {Type: String,Description: VPC id,Default: vpc-58c9a833},ImageId: {Type: String,Description: windows machine,Default: ami-0c4a11a8d0e503812},InstanceType: {Type: String,Description: Choosing t2 micro because it is free,Default: t2.micro},KeyName: {Description: SSH Keypair to login to the instance,Type: AWS::EC2::KeyPair::KeyName}},Resources: {DemoInstance: {Type: AWS::EC2::Instance,Properties: {ImageId: {Ref: ImageId},InstanceType: {Ref: InstanceType},KeyName: {Ref: KeyName},SecurityGroupIds: [{Ref: DemoSecurityGroup}],UserData: {Fn::Base64: {Fn::Sub: if ( Get-Service AWSXRayDaemon -ErrorAction SilentlyContinue ) {sc.exe stop AWSXRayDaemonsc.exe delete AWSXRayDaemon}, $targetLocation = C:\Program Files\Amazon\XRayif ((Test-Path $targetLocation) -eq 0) {mkdir $targetLocation}, $zipFileName = aws-xray-daemon-windows-service-3.x.zip$zipPath = $targetLocation\$zipFileName$destPath = $targetLocation\aws-xray-daemonif ((Test-Path $destPath) -eq 1) {Remove-Item -Recurse -Force $destPath}, $daemonPath = $destPath\xray.exe$daemonLogPath = $targetLocation\xray-daemon.log$url = https://s3.dualstack.us-west-2.amazonaws.com/aws-xray-assets.us-west-2/xray-daemon/aws-xray-daemon-windows-service-3.x.zip, Invoke-WebRequest -Uri $url -OutFile $zipPathAdd-Type -Assembly System.IO.Compression.Filesystem[io.compression.zipfile]::ExtractToDirectory($zipPath, $destPath), New-Service -Name AWSXRayDaemon -StartupType Automatic -BinaryPathName `$daemonPath` -f `$daemonLogPath`sc.exe start AWSXRayDaemon}}}},DemoSecurityGroup: {Type: AWS::EC2::SecurityGroup,Properties: {VpcId: {Ref: VpcId},GroupDescription: SG to allow SSH access via port 22,SecurityGroupIngress: [{IpProtocol: tcp,FromPort: 22,ToPort: 22,CidrIp: 0.0.0.0/0},{IpProtocol: tcp,FromPort: 80,ToPort: 80,CidrIp: 0.0.0.0/0},{IpProtocol: tcp,FromPort: 443,ToPort: 443,CidrIp: 0.0.0.0/0}],Tags: [{Key: Name,Value: EC2-SG}]}}},Outputs: {DemoInstanceId: {Description: Instance Id,Value: {Ref: DemoInstance}}}}. Even though the server is running we cant able to see the message. /var/log/cloud-init-output.log. When you stop an instance, the data on any instance store volumes is erased. So, that EC2 User data script is only run once and when it first starts, and then will never be run again. However, in some cases, it may be necessary to run these scripts as a non-root user, for security or other reasons. Can I specify the script somewhere in the AMI? When you launch an instance in Amazon EC2, you have the option of passing user data to the instance that can be used to perform common automated configuration tasks and even run scripts after the instance starts. In a very simple terms if I say, user data is user data/commands that you can specify at the time of launching your instance. I would be more than happy to reply to your comment. How to use EC2 User Data Script to Install Apache Web Server In this template, we are launching an EC2 instance with user data specified. Why do small African island nations perform better than African continental nations, considering democracy and human development? With describe-instance-attribute, the AWS CLI does not perform base64 decoding of the user data for you. I love New Pluralsight course on AWS Systems 5 years ago AWS Simple Systems Manager for EC2: Getting Started I am happy to PowerShell DSC to manage PowerShell The log files for EC2Launch v2, EC2Launch, and EC2Config contain the output from the standard output and standard error streams. Follow Up: struct sockaddr storage initialization by network format-string. data field, and then complete the instance launch Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to react to a students panic attack in an oral exam? So how much CPU? I am trying to automate EC2 instance creation. This is what I got: I suspect that the first 'sudo su'. 6. Replacing broken pins/legs on a DIP IC package. For more information, see How can I utilize user data to automatically run a script with every restart of my Amazon EC2 Linux instance? wizard as plain text, as a file (this is useful for launching instances using the In my previous post, I talked about doing it via AWS console. on Amazon EC2 with AWS CloudFormation, Run commands on your Windows instance at launch, Install a LAMP Web Server on Amazon Linux 2, User data and the Tools for Windows PowerShell. information, see Create a security group. Write for Us Cloud Computing | AWS | Cyber Security | DevOps | IoT, How to Install Apache Web Server on EC2 Instance, Using User Data Script to Bootstrap Your Instance, How to Launch an EC2 Instance in AWS Step by Step, Understand IAM PassRole to Secure your AWS Infrastructure, Attach an IAM Role to an EC2 Instance using CloudFormation, AWS EC2 instance Purchasing Options: All you need to know, Install Apache Web Server on a EC2 instance in AWS, How to Setup Budget in AWS to Keep your Bill in Check, 4 Main Factors to Consider When Choosing Your AWS Region, Subscribe an SQS Queue to an SNS Topic using CloudFormation, Send SNS Notification from AWS Lambda using Python Boto3, How to Create EC2 Instance using Terraform with Key Pair on AWS, How to Create Key Pair in AWS using Terraform in Right Way, How to Create IAM Role in AWS using Terraform. Open the Amazon EC2 console. The following example is a shell script that writes "Hello World" to a testfile.txt file in a /tmp directory. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. Follow the procedure for launching an instance. section and Create a security group. > > Can you explain what this is supposed to do? There are cases where I'd like to delete this state file so that the user data script will run again. If your instance is sitting in a private subnet, make sure that you are running NAT Gateway or NAT instance and that your route tables are properly configured, as well as SGs and NACLs. The ec2-user is added to the apache group. I was having a lot of trouble with this. Stop instance. file:// prefix to specify the file. AWS EC2 userdata on Windows - Cloud for the win! Be sure to delete the user data scripts from Windows EC2 PowerShell user data script to create a local RDP Step 3. You can also configure your user data to re-run on every boot, instead of removing the state file. Click here to return to Amazon Web Services homepage, back up any data on the instance store volumes, Determine the root device type of your AMI, Stopping and starting the instance erases any data on, If your EC2 instance has an auto-assigned public IPv4 address, then stopping and starting the instance causes the IPv4 address to change. @jarmod how can I echo it out? User data must be base64-decoded when you retrieve it. The following shows the mime-multi part format. wizard. Run commands on your Windows instance at launch errors, connect to the instance, Next, we have to go into network settings. sudo cloud-init modules -m final Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. To delete the existing user data, use the modify-instance-attribute When you launch an EC2 instance, you can specify your user data like below. Do not leave any white space at the start of the line . For the Advanced details section of the launch instance Rather all you need is to specify the whole script in the user data section and they get executed once your instance boots up. Copy your user script into the Edit user data box, and then choose Save. How can I do that? This worked for me on an Ubuntu, however I needed to run.