Session document schema - AWS Systems Manager

Session document schema

The following information describes the schema elements of a Session document. AWS Systems Manager Session Manager uses Session documents to determine which type of session to start, such as a standard session, a port forwarding session, or a session to run an interactive command.

schemaVersion

The schema version of the Session document. Session documents only support version 1.0.

Type: String

Required: Yes

description

A description you specify for the Session document. For example, "Document to start port forwarding session with Session Manager".

Type: String

Required: No

sessionType

The type of session the Session document is used to establish.

Type: String

Required: Yes

Valid values: InteractiveCommands | NonInteractiveCommands | Port | Standard_Stream

inputs

The session preferences to use for sessions established using this Session document. This element is required for Session documents that are used to create Standard_Stream sessions.

Type: StringMap

Required: No

s3BucketName

The Amazon Simple Storage Service (Amazon S3) bucket you want to send session logs to at the end of your sessions.

Type: String

Required: No

s3KeyPrefix

The prefix to use when sending logs to the Amazon S3 bucket you specified in the s3BucketName input. For more information about using a shared prefix with objects stored in Amazon S3, see How do I use folders in an S3 bucket? in the Amazon Simple Storage Service User Guide.

Type: String

Required: No

s3EncryptionEnabled

If set to true, the Amazon S3 bucket you specified in the s3BucketName input must be encrypted.

Type: Boolean

Required: Yes

cloudWatchLogGroupName

The name of the Amazon CloudWatch Logs (CloudWatch Logs) group you want to send session logs to at the end of your sessions.

Type: String

Required: No

cloudWatchEncryptionEnabled

If set to true, the log group you specified in the cloudWatchLogGroupName input must be encrypted.

Type: Boolean

Required: Yes

cloudWatchStreamingEnabled

If set to true, a continual stream of session data logs are sent to the log group you specified in the cloudWatchLogGroupName input. If set to false, session logs are sent to the log group you specified in the cloudWatchLogGroupName input at the end of your sessions.

Type: Boolean

Required: Yes

kmsKeyId

The ID of the AWS KMS key you want to use to further encrypt data between your local client machines and the Amazon Elastic Compute Cloud (Amazon EC2) managed nodes you connect to.

Type: String

Required: No

runAsEnabled

If set to true, you must specify a user account that exists on the managed nodes you will be connecting to in the runAsDefaultUser input. Otherwise, sessions will fail to start. By default, sessions are started using the ssm-user account created by the AWS Systems Manager SSM Agent. The Run As feature is only supported for connecting to Linux managed nodes.

Type: Boolean

Required: Yes

runAsDefaultUser

The name of the user account to start sessions with on Linux managed nodes when the runAsEnabled input is set to true. The user account you specify for this input must exist on the managed nodes you will be connecting to; otherwise, sessions will fail to start.

Type: String

Required: No

idleSessionTimeout

The amount of time of inactivity you want to allow before a session ends. This input is measured in minutes.

Type: String

Valid values: 1-60

Required: No

maxSessionDuration

The maximum amount of time you want to allow before a session ends. This input is measured in minutes.

Type: String

Valid values: 1-1440

Required: No

shellProfile

The preferences you specify per operating system to apply within sessions such as shell preferences, environment variables, working directories, and running multiple commands when a session is started.

Type: StringMap

Required: No

windows

The shell preferences, environment variables, working directories, and commands you specify for sessions on Windows managed nodes.

Type: String

Required: No

linux

The shell preferences, environment variables, working directories, and commands you specify for sessions on Linux managed nodes.

Type: String

Required: No

parameters

An object that defines the parameters the document accepts. For more information about defining document parameters, see parameters in the Top-level data elements. For parameters that you reference often, we recommend that you store those parameters in Systems Manager Parameter Store and then reference them. You can reference String and StringList Parameter Store parameters in this section of a document. You can't reference SecureString Parameter Store parameters in this section of a document. You can reference a Parameter Store parameter using the following format.

{{ssm:parameter-name}}

For more information about Parameter Store, see AWS Systems Manager Parameter Store.

Type: StringMap

Required: No

properties

An object whose values you specify that are used in the StartSession API operation.

For Session documents that are used for InteractiveCommands sessions, the properties object includes the commands to run on the operating systems you specify. You can also determine whether commands are run as root using the runAsElevated boolean property. For more information, see Restrict access to commands in a session.

For Session documents that are used for Port sessions, the properties object contains the port number where traffic should be redirected to. For an example, see the Port type Session document example later in this topic.

Type: StringMap

Required: No

Standard_Stream type Session document example

YAML
---

schemaVersion: '1.0'

description: Document to hold regional settings for Session Manager

sessionType: Standard_Stream

inputs:

  s3BucketName: ''

  s3KeyPrefix: ''

  s3EncryptionEnabled: true

  cloudWatchLogGroupName: ''

  cloudWatchEncryptionEnabled: true

  cloudWatchStreamingEnabled: true

  kmsKeyId: ''

  runAsEnabled: true

  runAsDefaultUser: ''

  idleSessionTimeout: '20'

  maxSessionDuration: '60'

  shellProfile:

    windows: ''

    linux: ''
JSON
{
    "schemaVersion": "1.0",
    "description": "Document to hold regional settings for Session Manager",
    "sessionType": "Standard_Stream",
    "inputs": {
        "s3BucketName": "",
        "s3KeyPrefix": "",
        "s3EncryptionEnabled": true,
        "cloudWatchLogGroupName": "",
        "cloudWatchEncryptionEnabled": true,
        "cloudWatchStreamingEnabled": true,
        "kmsKeyId": "",
        "runAsEnabled": true,
        "runAsDefaultUser": "",
        "idleSessionTimeout": "20",
        "maxSessionDuration": "60",
        "shellProfile": {
            "windows": "date",
            "linux": "pwd;ls"
        }
    }
}

InteractiveCommands type Session document example

YAML
---
schemaVersion: '1.0'
description: Document to view a log file on a Linux instance
sessionType: InteractiveCommands

parameters:
  logpath:
    type: String
    description: The log file path to read.
    default: "/var/log/amazon/ssm/amazon-ssm-agent.log"
    allowedPattern: "^[a-zA-Z0-9-_/]+(.log)$"

properties:
  linux:
    commands: "tail -f {{ logpath }}"
    runAsElevated: true
JSON
{
    "schemaVersion": "1.0",
    "description": "Document to view a log file on a Linux instance",
    "sessionType": "InteractiveCommands",
    "parameters": {
        "logpath": {
            "type": "String",
            "description": "The log file path to read.",
            "default": "/var/log/amazon/ssm/amazon-ssm-agent.log",
            "allowedPattern": "^[a-zA-Z0-9-_/]+(.log)$"
        }
    },
    "properties": {
        "linux": {
            "commands": "tail -f {{ logpath }}",
            "runAsElevated": true
        }
    }
}

Port type Session document example

YAML
---
schemaVersion: '1.0'
description: Document to open given port connection over Session Manager
sessionType: Port
parameters:
  paramExample:
    type: string
    description: document parameter

properties:
  portNumber: anyPortNumber
JSON
{
    "schemaVersion": "1.0",
    "description": "Document to open given port connection over Session Manager",
    "sessionType": "Port",
    "parameters": {
        "paramExample": {
            "type": "string",
            "description": "document parameter"
        }
    },
    "properties": {
        "portNumber": "anyPortNumber"
    }
}

Session document example with special characters

YAML
---
schemaVersion: '1.0'
description: Example document with quotation marks
sessionType: InteractiveCommands
parameters:
  Test:
    type: String
    description: Test Input
    maxChars: 32
properties:
  windows:
    commands: |
        $Test = '{{ Test }}'
        $myVariable = \"Computer name is $env:COMPUTERNAME\"
        Write-Host "Test variable: $myVariable`.`nInput parameter: $Test"
    runAsElevated: false
JSON
{
   "schemaVersion":"1.0",
   "description":"Test document with quotation marks",
   "sessionType":"InteractiveCommands",
   "parameters":{
      "Test":{
         "type":"String",
         "description":"Test Input",
         "maxChars":32
      }
   },
   "properties":{
      "windows":{
         "commands":[
            "$Test = '{{ Test }}'",
            "$myVariable = \\\"Computer name is $env:COMPUTERNAME\\\"",
            "Write-Host \"Test variable: $myVariable`.`nInput parameter: $Test\""
         ],
         "runAsElevated":false
      }
   }
}