使用 AWS CLI 及 Bash 脚本的 AWS STS 示例

以下代码示例演示了如何通过将 AWS Command Line Interface及 Bash 脚本与 AWS STS 结合使用，来执行操作和实现常见场景。

操作是大型程序的代码摘录，必须在上下文中运行。您可以通过操作了解如何调用单个服务函数，还可以通过函数相关场景的上下文查看操作。

每个示例都包含一个指向完整源代码的链接，您可以从中找到有关如何在上下文中设置和运行代码的说明。

操作

AssumeRole

以下代码示例演示如何使用 AssumeRole。

AWS CLI 及 Bash 脚本

注意

查看 GitHub，了解更多信息。查找完整示例，了解如何在 AWS 代码示例存储库中进行设置和运行。

###############################################################################
# function iecho
#
# This function enables the script to display the specified text only if
# the global variable $VERBOSE is set to true.
###############################################################################
function iecho() {
  if [[ $VERBOSE == true ]]; then
    echo "$@"
  fi
}

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

###############################################################################
# function sts_assume_role
#
# This function assumes a role in the AWS account and returns the temporary
#  credentials.
#
# Parameters:
#       -n role_session_name -- The name of the session.
#       -r role_arn -- The ARN of the role to assume.
#
# Returns:
#       [access_key_id, secret_access_key, session_token]
#     And:
#       0 - If successful.
#       1 - If an error occurred.
###############################################################################
function sts_assume_role() {
  local role_session_name role_arn response
  local option OPTARG # Required to use getopts command in a function.

  # bashsupport disable=BP5008
  function usage() {
    echo "function sts_assume_role"
    echo "Assumes a role in the AWS account and returns the temporary credentials:"
    echo "  -n role_session_name -- The name of the session."
    echo "  -r role_arn -- The ARN of the role to assume."
    echo ""
  }

  while getopts n:r:h option; do
    case "${option}" in
      n) role_session_name=${OPTARG} ;;
      r) role_arn=${OPTARG} ;;
      h)
        usage
        return 0
        ;;
      \?)
        echo "Invalid parameter"
        usage
        return 1
        ;;
    esac
  done

  response=$(aws sts assume-role \
    --role-session-name "$role_session_name" \
    --role-arn "$role_arn" \
    --output text \
    --query "Credentials.[AccessKeyId, SecretAccessKey, SessionToken]")

  local error_code=${?}

  if [[ $error_code -ne 0 ]]; then
    aws_cli_error_log $error_code
    errecho "ERROR: AWS reports create-role operation failed.\n$response"
    return 1
  fi

  echo "$response"

  return 0
}

• 有关 API 详细信息，请参阅《AWS CLI 命令参考》中的 AssumeRole。

AssumeRole

以下代码示例演示如何使用 AssumeRole。

AWS CLI 及 Bash 脚本

注意

查看 GitHub，了解更多信息。查找完整示例，了解如何在 AWS 代码示例存储库中进行设置和运行。

###############################################################################
# function iecho
#
# This function enables the script to display the specified text only if
# the global variable $VERBOSE is set to true.
###############################################################################
function iecho() {
  if [[ $VERBOSE == true ]]; then
    echo "$@"
  fi
}

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

###############################################################################
# function sts_assume_role
#
# This function assumes a role in the AWS account and returns the temporary
#  credentials.
#
# Parameters:
#       -n role_session_name -- The name of the session.
#       -r role_arn -- The ARN of the role to assume.
#
# Returns:
#       [access_key_id, secret_access_key, session_token]
#     And:
#       0 - If successful.
#       1 - If an error occurred.
###############################################################################
function sts_assume_role() {
  local role_session_name role_arn response
  local option OPTARG # Required to use getopts command in a function.

  # bashsupport disable=BP5008
  function usage() {
    echo "function sts_assume_role"
    echo "Assumes a role in the AWS account and returns the temporary credentials:"
    echo "  -n role_session_name -- The name of the session."
    echo "  -r role_arn -- The ARN of the role to assume."
    echo ""
  }

  while getopts n:r:h option; do
    case "${option}" in
      n) role_session_name=${OPTARG} ;;
      r) role_arn=${OPTARG} ;;
      h)
        usage
        return 0
        ;;
      \?)
        echo "Invalid parameter"
        usage
        return 1
        ;;
    esac
  done

  response=$(aws sts assume-role \
    --role-session-name "$role_session_name" \
    --role-arn "$role_arn" \
    --output text \
    --query "Credentials.[AccessKeyId, SecretAccessKey, SessionToken]")

  local error_code=${?}

  if [[ $error_code -ne 0 ]]; then
    aws_cli_error_log $error_code
    errecho "ERROR: AWS reports create-role operation failed.\n$response"
    return 1
  fi

  echo "$response"

  return 0
}

• 有关 API 详细信息，请参阅《AWS CLI 命令参考》中的 AssumeRole。