Aws Cli Ssm Get Parameter

パラメータストア パラメータストアからのデータ取得 Run Command、Automation、State Managerで参照可能 例:AWS CLIから参照する場合(赤字部分は編集) aws ssm get-parameters --name パラメータ名 KMSで暗号化していた値を参照する場合 例:AWS CLIから参照する場合(赤字部分は. For external services, you can use the AWS SSM Parameter Store. Starting with version 2. 0, chamber uses parameter store's path based API by default. key_id - (Optional) The KMS key id or arn for encrypting a. Sep 14, 2017 · I'm approacching now to aws. It is not visible in the CloudFormation console, not in the ECS Fargate console. NET and AWS Toolkit for Visual Studio first. Additionally, we regularly deploy to 4 different AWS accounts, so I need a simple way to manage both common and unique parameters across multiple environments for a given application. Type (string) --The type of key-value pair. aws ssm get-maintenance-window-task: Get-SSMMaintenanceWindowTask: aws ssm get-ops-item: aws ssm get-ops-summary: aws ssm get-parameter: Get-SSMParameter: aws ssm get-parameter-history: Get-SSMParameterHistory: aws ssm get-parameters: Get-SSMParameterValue: aws ssm get-parameters-by-path: Get-SSMParametersByPath: aws ssm get-patch-baseline: Get. We will then end it off by writing a Python Script that reads the AWS credentials, authenticates with SSM and then read the secret values that we stored. This is great for AWS APIs, but the AWS CLI leaves a bit to be desired when it comes to interacting with parameter store. SSM Parameter Store allows for secure storage of configuration data and secrets. Today I'll show you how to do the same in the command line using aws-cli. 15 Essential Amazon AWS EC2 CLI Command Examples. Parameter Store is a free AWS service where you can manage your parameters (such as connection details or encryption keys). KeyId (string) --The identifier of the CMK that encrypted the data key. It is intended to be used as a Docker Entrypoint, but can really be used to launch applications outside of Docker as well. Create React apps with no build configuration. See 'aws help' for descriptions of global parameters. If not specified, will default to Standard. SSM parameter store is a service from AWS which allows you to manage configuration parameters for your applications, let that be the environment it runs in, passwords for database access, API tokens or whatever you need. delete_parameter() or do it via the console. Amazon FSx for windows 4. For more information about parameter hierarchies, see Organizing Parameters into Hierarchies. Today we will use Amazon Web Services SSM Service to store secrets in their Parameter Store which we will encyrpt using KMS. yml , but the difference now is that you can structure the file however you want, and you'll need to reference each variable/property correctly in serverless. It is not visible in the CloudFormation console, not in the ECS Fargate console. Download the AWS CLI, it comes along with inbuilt support for Systems Manager (SSM). In the previous post I explained how to Use Cross-account access through AWS Console. The CLI command from the enviornment block is NOT ran until it is called within the sh command. As I have been previously doing more work on the other cloud, namely Amazon Web Services (AWS), I have found a few things that are worth mentioning and in this article here I will start with EC2 instances and their deployment / provisioning on AWS. Make sure you have jq installed and the AWS cli installed and configured. Use AWS-specific parameter types with the CloudFormation console to avoid invalid values. I was recently trying SSM, and found the following two issues with aws-cli when I copied the command from the AWS webpage: aws ssm send-command --document-name "AWS-UpdateLinuxAmi" --document-description "Update a Linux AMI. client('ssm' ) commands = ['echo "hello world"'] ssm. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. The CLI command from the enviornment block is NOT ran until it is called within the sh command. 例えば以下のようにAWS-CLIを使うと news-app 用の環境変数がまとめて取得出来ます。 AWS-CLIで以下を実行する aws ssm get-parameters-by-path --path /dev/test-app/news --with-decryption. The AWS SSM Parameter Store and Rate Limiting. Manipulate DynamoDB Items with awscli /aws/dynamodb/ Use Parameter Store with awscli /aws/ssm/ Check AWS Inter-Region Latency /aws/vpc/ Set up a VPC with Public and Private Subnets /aws/vpc/ Set up a VPC with Terraform /aws/vpc/ Support command aliases /click/ Create axis without tick labels /d3/axis/ Clear brush selection /d3/brush/. You can use Run Command from the AWS console, the AWS Command Line Interface, AWS Tools for Windows PowerShell, or the AWS SDKs. aws or environment variables. CloudWatch and SSM service is activated by users and allows to set up AWS CloudWatch monitoring over instances in private OpenStack regions. Many others have found it to be a good way to configure per-app and per-environment data in individual AWS accounts. Parameter 생성 $ aws ssm put-parameter --name "my_parameter_key" --value "my_parameter_value" --type String. Account Edge Network Host Container Code Data 1. delete_parameter() or do it via the console. aws_ssm_parameter. Welcome! I'm here to help you prepare and PASS the newest AWS Certified Solutions Architect Associate exam. Open the AWS CLI and execute the following command to create a Maintenance Window that runs at 4 PM on every Tuesday for 4 hours, with a 1 hour cutoff, and that allows. There are several valid keys, for a full reference, check out describe-instances in the AWS CLI reference. aws ssm; ssm; ssm parameters. Let's assume that we've set the following SSM Parameters:. To get started with Amazon EC2 Systems Manager, verify prerequisites, configure AWS Identity and Access Management (IAM) roles, and install the SSM Agent on managed instances. and can be conveniently configured using an OpenAPI spec, formerly known as Swagger. Then we will read the data from SSM and decrypt using our KMS key. 6 - a C# packag Amazon EC2 Simple Systems Manager (SSM) enables you to manage a number of administrative and configuration tasks on your instances. After a lot of struggle by inserting key using console, this issue helps us to fix the missing new line characters. Now lpass doesn't make it very easy to export all of your secret notes and the data they contain, but with some UNIX command footwork it is possible:. Need to speak with someone KNOWLEDGEABLE with AWS Parameter Store. Previous Post Google Chrome Marking ALL Non-HTTPS Sites Insecure July 2018 Next Post Calling Squid "Calamari" Makes It More Appetizing. Create React apps with no build configuration. Using AWS SSM Parameter Store to Retrieve Secrets Encrypted by KMS using Python. Parameters[*]" (Required) Specify a shell script or a command to run. env-aws-params is a tool that injects AWS EC2 Systems Manager (SSM) Parameter Store Key / Value pairs as Environment Variables when executing an application. In this video, get a walkthrough of how to install and configure the AWS CloudWatch agent on an EC2 instance. By default aws ssm. AWS CLIからEC2にコマンドを送信して実行することができました。複数のEC2への定型作業などで使うことができるかも知れません。. Amazons ssm caught my eye. Stack Exchange Network Stack Exchange network consists of 176 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I'll use the AWS Command Line Interface (CLI) for most of my examples; you can also use the AWS Tools for Windows PowerShell or any of the AWS SDKs. I took the below code as reference from here and modified it to delete the AMI’s by filtering the images which has only specified tags. If one of the parameters cannot be retrieved, get-ssm-params will exit(1). We will then end it off by writing a Python Script that reads the AWS credentials, authenticates with SSM and then read the secret values that we stored. env-aws-params is a tool that injects AWS EC2 Systems Manager (SSM) Parameter Store Key / Value pairs as Environment Variables when executing an application. Parameter hierarchies are limited to a maximum depth of fifteen levels. If you don't use Auto Scaling , you will need to configure this process manually. Secrets management is a constant topic for debate in tech and security circles, even more so for users of cloud providers. After deploying, you can see lambda function and set the trigger on the AWS IoT Rules. aws ssm get-parameters --name "/IAD/ERP/Oracle/addUsers" 创建 SecureString 参数 (AWS CLI) 在创建 SecureString 参数前,请阅读关于此类型参数的要求。有关更多信息,请参阅 使用安全字符串参数。 打开 AWS CLI 并运行以下命令指定您的凭证和区域。. Sep 14, 2017 · I'm approacching now to aws. After a lot of struggle by inserting key using console, this issue helps us to fix the missing new line characters. https://aws. 67 Windows 10 Problem I've created a SecureString parameter in the AWS SSM Parameter Store. AWS Key Management Service (AWS KMS) • Managed service that simplifies creation, control, rotation, deletion, and use of encryption keys in your applications • Integrated with 19 AWS services for server-side encryption • Integrated with AWS service clients/SDKs • S3, EMRFS, DynamoDB, AWS Encryption SDK • Integrated with CloudTrail to. aws ssm send-comm Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Aws ssm parameter store keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. Under the Systems Manager service within AWS, you can find the parameter store. $ aws ssm put-parameter --name "RDS-MASTER-PASSWORD" --value 'PASSWORD' --type "SecureString" Sample Code. Controlling Sidekiq Workers on AWS with Fargate and SSM Commands. SSM Parameter Store allows for secure storage of configuration data and secrets. a useful workaround — do a quick search* of parameter store. See also: AWS API Documentation. パラメータストア パラメータストアからのデータ取得 Run Command、Automation、State Managerで参照可能 例:AWS CLIから参照する場合(赤字部分は編集) aws ssm get-parameters --name パラメータ名 KMSで暗号化していた値を参照する場合 例:AWS CLIから参照する場合(赤字部分は. Solution was to create a new IAM role with AmazonSSMFullAccess and assign the role to the EC2 instance. pem chmod 400 key. You can schedule this run command through AWS SSM ‘Maintenance Windows’, a cron job on a server (like Rundeck) or manual through the AWS Console. This is a post for all the AWS CLI oneliners that I stumble upon. Creating a parameter via the aws cli would look like this $ aws ssm put-parameter --name test-parameter-2 --type String --value test-value-2 --overwrite Using --overwrite is required if you are replacing an existing value but it can be used for an initial value as well. For this post, I’ll use the AWS CLI to copy the cluster backup from region 1 to region 2, and then I’ll launch a new cluster from that copied backup. The ssm:GetParameters permission is the policy used to enforce access control and protect one service’s secrets from another. GitHub Gist: star and fork serverhorror's gists by creating an account on GitHub. Parameter Store DescribeParameters tasks例 実行結果 Secrets Manager aws_secret GetSecretValue tasks例 実行結果 aws_ssm tasks例 実行結果 __NSPlaceholderDate initialize エラー Parameter Store パラメータストア参照は aws_ssm プラグインで行えます。 version 2. json Browse other questions tagged amazon-web-services aws-cli aws-parameter-store or ask your own question. At Entasis we help our customers understand and modify their technology stacks so that scaling is a function of cost not a function of technology. They can be passed in from either AWS secrets manager or SSM parameter store depending on your use case. There are a few ways to turn off unused Amazon Web Services (AWS) Elastic Compute Cloud (EC2) instances. However, using them will make your template flexible and dynamic. I'm using GitBash v2. AWS SSM Automation | Lambda, and Parameter Store by Valaxy Technologies. Encoded authorization failure message…. Description]" AWS-RunShellScript Run a shell script or specify the commands to run. aws ssm send-comm Stack Exchange Network Stack Exchange network consists of 176 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 0 supported this API using the CHAMBER_USE_PATHS environment variable. In this post,. The first argument you pass the lookup can either be a parameter name or a hierarchy of parameters. AWS CLI will fetch this tag value and change the hostname of the Instance using the SSM document. Since we're using Flask, we can easily integrate SSM Parameter Store with the Flask config. If you continue browsing the site, you agree to the use of cookies on this website. Create React apps with no build configuration. None of these policy templates grants permissions for any SSM operation, so you can't use a SAM policy template to grant your AWS Lambda function access to SSM parameters as of now. Do you know AWS Parameter Store?. One of the more interesting credentials is an SSH key that is used to clone a GitHub repository into an environment that has IAM roles available (E. Serverless v1. I'm trying to store parameter in the Parameter Store of my EC2 instance, and I would get them for put in an environment variable in the AfterInstall step of Codedeploy. We'll use the AWS CLI to do that here. Applying the patch baseline to a specific instance or to a patch group is nothing more than executing an AWS SSM run command. Using automation and desired state configuration, we leverage CloudFormation for creating infrastructure. We are going to create a headless boot disk for Raspberry Pi and setup the device to receive the application stored on GitHub. For this post, I’ll use the AWS CLI to copy the cluster backup from region 1 to region 2, and then I’ll launch a new cluster from that copied backup. 約 10 ヶ月前、パラメータストアの「安全な文字列(SecureString)」には改行が含まれた複数行文字列が格納できない(改行が半角スペースに変換される)という記事を書いたのですが、この挙動がいつのまにか解消されていましたのでフォローアップします。. SSM parameter store is a service from AWS which allows you to manage configuration parameters for your applications, let that be the environment it runs in, passwords for database access, API tokens or whatever you need. 5 から実装されているようです。. Solution was to create a new IAM role with AmazonSSMFullAccess and assign the role to the EC2 instance. aws-cliでSSMのparameter storeにデータをいれる. Conclusion. Example: anarinsky:~> aws ssm put-parameter --name /IAD/ERP/Oracle/addUsers --value ". Secrets Management with Parameter Store EC2 instance w/ IAM role or via Systems Manager ECS container w/ IAM task role Lambda function w/ IAM execution role CLI / SDK client w/ IAM credentials IAM policy grants access to parameter path / tag & KMS encrypt / decrypt KMS Customer Master Key(s) Parameter & KMS API calls logged in CloudTrail. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. CloudFormation parameters and Parameter Store parameters are two different things. This is my code: ssm = boto3. If one of the parameters cannot be retrieved, get-ssm-params will exit(1). At Archer, we have been moving credentials into AWS Systems Manager (SSM) Parameter Store and AWS Secrets Manager. Once everything is verified, you can use a modified version of the script that calls ssm. Make sure to have your credentials file is configured. 67 Windows 10 Problem I've created a SecureString parameter in the AWS SSM Parameter Store. 0 AWS CLI v1. Create a script to export all application secrets via lpass cli and ingest them into AWS SSM Parameter Store. See 'aws help' for descriptions of global parameters. SSH Client (Example Putty). Amazon Web Services - EC2 Simple Systems Manager November 2015 Page 7 of 22 Domain Join For domain joins, SSM requires the use of AWS Directory Services. This is a post for all the AWS CLI oneliners that I stumble upon. pem chmod 400 key. For this post, I’ll use the AWS CLI to copy the cluster backup from region 1 to region 2, and then I’ll launch a new cluster from that copied backup. But, using AWS Lambda environment variables makes it hard to share config values across functions and to implement fine-grained access to sensitive data (eg. The AWS access key and AWS secret keys seem like the perfect things to store in Parameter Store. I have stored my private key file in AWS SSM Parameter store. The content below is taken from the original (Automate Running Tasks Using Amazon EC2 Systems Manager Maintenance Windows), to continue reading please visit the site. The JSON string follows the format provided by --generate-cli-skeleton. Walkthrough: Automatically Update SSM Agent (CLI). To override, use -awsregion command line option or define SSM_AWS_REGION environment variable. by you cannot then use the get_command_invocation boto call or CLI command. Remote Management with aws-cli. It's just one command: aws ssm create-document --content file://apt-get-upgrade. To view a list of parameters supported by a given "document," navigate to the AWS Systems Manager feature in the AWS Management Console, then go to Shared Resources -> Documents, and search for the Document that you want to use. In fact, pretty much all the post-processing you'd ever need to chain commands together is already build into the tools, just not that easy to find. io we create immutable infrastructure. Even though we are able to get the content properly, it is trimming the new line character in the la. Also, if you are Linux sysadmin, you would prefer to manage your EC2 instances from the command line. There are solutions like Hashicorp Vault, Sneaker, and Credstash (even a locked down S3 bucket) that we have looked at using at Unbounce. You should use SSM Parameter Store over Lambda env variables AWS Lambda introduced native support for environment variables (with KMS encryption support). For context purposes, if you store 100 secrets (password, API Keys, etc) you pay $40 a month and if you request the value of the secret with a 40,000 API calls in a month you pay $0. The JSON string follows the format provided by --generate-cli-skeleton. Serverless v1. {{ssm:}} Replacements on configuration files are not supported by Elastic Beanstalk, seems to be a feature only for EC2 Systems Manager's Run Command, and only supports alphanumeric parameter names (e. Task 1: Create a Parameter in Systems Manager Parameter Store Task 2: Create an IAM Role for AWS Lambda. Getting Started. Open the AWS CLI and execute the following command to create a Maintenance Window that runs at 4 PM on every Tuesday for 4 hours, with a 1 hour cutoff, and that allows. By default aws ssm. AWS EC2 userdata on Windows. ParameterStoreの登録 2. The Parameter Store provides secure, hierarchical storage for secrets management like passwords, database strings. aws ssm get-parameters --region ap-northeast-1 --name production. More than 3 years have passed since last update. AWS offers a simple key value store that is most often used for configuration data called SSM Parameter store. Today we will use Amazon Web Services SSM Service to store secrets in their Parameter Store which we will encyrpt using KMS. You can query the SSM Parameter Store API using the AWS CLI or any of the AWS SDKs. # Install the AWS CLI apt-get -y install. The script assumes all parameters are encrypted. SSM parameter store is a service from AWS which allows you to manage configuration parameters for your applications, let that be the environment it runs in, passwords for database access, API tokens or whatever you need. get_password_data - (Optional) If true, wait for password data to become available and retrieve it. A utility module to load and inject ssm parameters into json configuration objects. aws ssm get-maintenance-window-task: Get-SSMMaintenanceWindowTask: aws ssm get-ops-item: aws ssm get-ops-summary: aws ssm get-parameter: Get-SSMParameter: aws ssm get-parameter-history: Get-SSMParameterHistory: aws ssm get-parameters: Get-SSMParameterValue: aws ssm get-parameters-by-path: Get-SSMParametersByPath: aws ssm get-patch-baseline: Get. Let’s first check everything manually. 22 introduces support for SSM Parameters via the Serverless Variables system. 67 Windows 10 Problem I've created a SecureString parameter in the AWS SSM Parameter Store. Download the AWS CLI, it comes along with inbuilt support for Systems Manager (SSM). AWS Systems Manager パラメーターストアを利用してリージョンやエンドポイントの情報が取得できるようになったので紹介します。. Type (string) --The type of key-value pair. 183-1 File List. Even though we are able to get the content properly, it is trimming the new line character in the la. and employing them securely. commands StringList (Optional) The path to the working directory on your instance. Amazon FSx for windows 4. Create React apps with no build configuration. Key Features. Docker Fetches from SSM Parameter Store. It’s just one command: aws ssm create-document --content file://apt-get-upgrade. AWS Systems Manager Parameter Store provides secure storage for configuration data management and secrets management, which allows you to store sensitive iformation like passwords that you can encrypt with your KMS key. We are going to create a headless boot disk for Raspberry Pi and setup the device to receive the application stored on GitHub. Among the given services, there is AWS Systems Manager which is a collection of services to manage AWS instances, hybrid environment, resources, and virtual machines by providing a common UI interface for all of them. We will then end it off by writing a Python Script that reads the AWS credentials, authenticates with SSM and then read the secret values that we stored. $ aws ssm get-parameters --names "test-parameter-1" --query "Parameters[0]". Installation npm install -g secrets-handler CLI Usage > secrets-handler --help Usage: secrets-handler [command] [options] Options: -V, --version output the version number -h, --help output usage information Commands: get Fetch a collection of secrets from AWS SSM by path and write them to standard output as a single. get-parameters-by-path — AWS CLI 1. aws ssm; ssm; ssm parameters. SSM Agent は気づくとバージョンアップしていますので、自動更新していない場合は最新版を適用するのが先決です。(リンク先に最新版 SSM Agentダウンロードリンクがあります) 【AWS】SSMを使用してWindowsServerの特定プロセスをCloudWatchで監視する. RDS Describe All RDS DB Instances: 1 $ …. The AWS access key and AWS secret keys seem like the perfect things to store in Parameter Store. Since we’re using Flask, we can easily integrate SSM Parameter Store with the Flask config. Storage layer 4. Installing and Configuring SSM Agent on Windows Instances. Use AWS-specific parameter types with the CloudFormation console to avoid invalid values. Welcome! I'm here to help you prepare and PASS the newest AWS Certified Solutions Architect Associate exam. By default, get-ssm-params uses AWS region eu-central-1. AWS Systems Manager パラメーターストアを利用してリージョンやエンドポイントの情報が取得できるようになったので紹介します。. Package has 2583 files and 137 directories. You can use Parameter Store to hold various config parameters that your applications can then query using AWS API or AWS CLI. over 2 years s3 mv exits with 0 status when it fails to actually remove local file; over 2 years aws-cli fails to acquire session token before issuing sts:AssumeRole call; over 2 years Cloudformation external parameter file do not support YAML file. Simple Secrets Management via AWS’ EC2 Parameter Store to use for encrypting secure strings directly within the AWS console! The AWS CLI SSM reference can strings using the ssm get. Amazon Web Services - EC2 Simple Systems Manager November 2015 Page 7 of 22 Domain Join For domain joins, SSM requires the use of AWS Directory Services. Will be able to detect attacks and protect the AWS infrastructure from Hackers. # get the list of parameter store variables in the account aws ssm describe-parameters | jq '. I'll use the AWS Command Line Interface (CLI) for most of my examples; you can also use the AWS Tools for Windows PowerShell or any of the AWS SDKs. Here is a helper Bash script which uses aws ssm send-command with --output-s3-bucket-name parameter to run the command and the result is stored in the S3 bucket, then displayed to the standard output. See also: AWS API Documentation. Scenario: You have stored the contents of a string using AWS SSM parameter store (side note: if you are not using it yet, you should definitely have a look), but when retrieving it decrypted via CLI, you notice that the string has. AWS SSM is an EC2 tool that helps us to manage and configure our instances. You can use AWS Directory Service to create three types of directories. 22 introduces support for SSM Parameters via the Serverless Variables system. aws ssm send-comm Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Re-using EC2 Key Pair in multiple regions. Many others have found it to be a good way to configure per-app and per-environment data in individual AWS accounts. Parameter Hierarchies. See also: AWS API Documentation. Creating and Configuring a Maintenance Window Using the CLI To create and configure a Maintenance Window Using the AWS CLI 1. For sake of example, let's call the paramet. For information, see Install or Upgrade and then Configure the AWS CLI. 0\nSupported AutoScaling, it is really Powerful. More than 1 year has passed since last update. Parameters[]. Note that parameters may differ from a family to an other. get-parameters-by-pathで再帰的に取得する方法. Find the terraform script from below link to create SSM run command document for changing the. If you don't use Auto Scaling , you will need to configure this process manually. At a minimum, you need to specify a logical id (name) and type for your parameter. See also: AWS API Documentation See 'aws help' for descriptions of global parameters. None of these policy templates grants permissions for any SSM operation, so you can't use a SAM policy template to grant your AWS Lambda function access to SSM parameters as of now. (string) --(dict) --An object that defines the value of the key and its type in the OperationalData map. Each solution has its own level. You can set the parameters via AWS Console or CLI: aws ssm put-paramater --name "DB_NAME" --value "myDb" If you want to store a secure string parameter, you add the KMS key id and set a type to. Create Session Manager Preferences (AWS CLI) Update Session Manager Preferences (AWS CLI) Step 5: (Optional) Use PrivateLink to Set Up a VPC Endpoint for Session Manager; Step 6: (Optional) Disable or Enable ssm-user Account Administrative Permissions; Working with Session Manager (Optional) Install the Session Manager Plugin for the AWS CLI. See also: AWS API Documentation See 'aws help' for descriptions of global parameters. Here is something super cool I do with AWS SSM Send-Command! Using Apache Airflow I create a brand new EC2-Instance using a Cloud Formation Template (or CFT for short) that's just a JSON file with all the configuration values for my EC2-Instance that I want; also note that in this CFT I also have a bootstrap command that copies a Python script from an S3 location to the new EC2-Instance so. com/jp/cli/ AWS Command Line Interface のインストール - AWS Command Line Interface; Dockerイメージ. To activate your project in EPAM Cloud or AWS for a project, please submit an activation request at EPAM Service Desk and provide the details. The acronym stands for Amazon Web Services Command Line Interface because, as its name suggests, users operate it from the command line. For AWS specific values, always use the AWS-Specific Parameter Types. In that KV store, you can store strings of up to 4096 characters (I don't think it is bytes according to what I've found online) which is more than enough for the purpose I have. By default, get-ssm-params uses AWS region eu-central-1. Type (string) --The type of key-value pair. Download the AWS CLI to your local machine. Use AWS-specific parameter types with the CloudFormation console to avoid invalid values. Creating and Configuring a Maintenance Window Using the CLI To create and configure a Maintenance Window Using the AWS CLI 1. Aws Cli Ssm Get Parameter.