{Config}AWS Config ルールでのリソースの評価

-- 1. コマンド等のインストール

-- 1.1 aws cli version 2 インストール

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install
aws --version

-- 1.2 jqインストール
sudo yum -y install jq

-- 2. S3 バケットを作成する

aws s3 ls

aws s3 mb s3://bucket123

-- 3. バケットポリシーの設定

vim b.json

{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AWSConfigBucketPermissionsCheck",
"Effect": "Allow",
"Principal": {
"Service": "config.amazonaws.com"
},
"Action": "s3:GetBucketAcl",
"Resource": "arn:aws:s3:::bucket123",
"Condition": {
"StringEquals": {
"AWS:SourceAccount": "999999999999"
}
}
},
{
"Sid": "AWSConfigBucketExistenceCheck",
"Effect": "Allow",
"Principal": {
"Service": "config.amazonaws.com"
},
"Action": "s3:ListBucket",
"Resource": "arn:aws:s3:::bucket123",
"Condition": {
"StringEquals": {
"AWS:SourceAccount": "999999999999"
}
}
},
{
"Sid": "AWSConfigBucketDelivery",
"Effect": "Allow",
"Principal": {
"Service": "config.amazonaws.com"
},
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::bucket123/*",
"Condition": {
"StringEquals": {
"AWS:SourceAccount": "999999999999",
"s3:x-amz-acl": "bucket-owner-full-control"
}
}
}
]
}

aws s3api put-bucket-policy \
--bucket bucket123 \
--policy file://b.json

aws s3api get-bucket-policy \
--bucket bucket123

-- 4. SNSトピック作成

aws sns list-topics
aws sns list-subscriptions

aws sns create-topic --name topic01

aws sns subscribe \
--topic-arn arn:aws:sns:ap-northeast-1:999999999999:topic01 \
--protocol email \
--notification-endpoint hoge@example.com

-- 5. SNSアクセスポリシー設定

aws sns get-topic-attributes \
--topic-arn arn:aws:sns:ap-northeast-1:999999999999:topic01

vim a.json

{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "__default_statement_ID",
"Effect": "Allow",
"Principal": {
"AWS": "*"
},
"Action": [
"sns:GetTopicAttributes",
"sns:SetTopicAttributes",
"sns:AddPermission",
"sns:RemovePermission",
"sns:DeleteTopic",
"sns:Subscribe",
"sns:ListSubscriptionsByTopic",
"sns:Publish"
],
"Resource": "arn:aws:sns:ap-northeast-1:999999999999:topic01",
"Condition": {
"StringEquals": {
"AWS:SourceOwner": "999999999999"
}
}
},
{
"Sid": "AWSConfigSNSPolicy20180529",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::999999999999:role/aws-service-role/config.amazonaws.com/AWSServiceRoleForConfig"
},
"Action": "sns:Publish",
"Resource": "arn:aws:sns:ap-northeast-1:999999999999:topic01"
}
]
}

aws sns set-topic-attributes \
--topic-arn arn:aws:sns:ap-northeast-1:999999999999:topic01 \
--attribute-name Policy \
--attribute-value file://a.json

-- 6. AWS Config の有効化

aws configservice put-configuration-recorder \
--configuration-recorder name=default,roleARN=arn:aws:iam::999999999999:role/aws-service-role/config.amazonaws.com/AWSServiceRoleForConfig \
--recording-group '{
"allSupported": false,
"includeGlobalResourceTypes": false,
"resourceTypes": [
"AWS::EC2::Instance",
"AWS::EC2::Volume"
]
}'

aws configservice put-delivery-channel \
--delivery-channel '{
"name": "default",
"s3BucketName": "bucket123",
"snsTopicARN": "arn:aws:sns:ap-northeast-1:999999999999:topic01",
"configSnapshotDeliveryProperties": {
"deliveryFrequency": "TwentyFour_Hours"
}
}'

aws configservice start-configuration-recorder \
--configuration-recorder-name default

aws configservice put-retention-configuration \
--retention-period-in-days 30

aws configservice describe-delivery-channels
aws configservice describe-configuration-recorders
aws configservice describe-configuration-recorder-status
aws configservice describe-retention-configurations

-- 7. IAMポリシー作成
vim policy01.json

{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"ec2:EnableEbsEncryptionByDefault",
"ec2:GetEbsEncryptionByDefault"
],
"Resource": "*"
}
]
}

aws iam create-policy \
--policy-name policy01 \
--policy-document file://policy01.json

-- 8. IAMロール作成
vim role01.json

{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "",
"Effect": "Allow",
"Principal": {
"Service": [
"ssm.amazonaws.com"
]
},
"Action": "sts:AssumeRole"
}
]
}

aws iam create-role \
--role-name role01 \
--assume-role-policy-document file://role01.json

-- 9. ポリシーをロールにアタッチ
aws iam attach-role-policy \
--policy-arn arn:aws:iam::999999999999:policy/policy01 \
--role-name role01

-- 10. ルールの追加

vim rule.json

{
"ConfigRule": {
"ConfigRuleName": "rule01",
"Description": "ec2-ebs-encryption-by-default",
"Scope": {
"ComplianceResourceTypes": ["AWS::EC2::Volume"]
},
"Source": {
"Owner": "AWS",
"SourceIdentifier": "EC2_EBS_ENCRYPTION_BY_DEFAULT"
},
"InputParameters": "{}",
"MaximumExecutionFrequency": "TwentyFour_Hours"
}
}

※ルール評価対象はConfigの変更管理の対象リソースとして登録しておく必要がある

aws configservice put-config-rule \
--cli-input-json file://rule.json

aws configservice describe-config-rules

-- 11. 自動修復の設定

vim remediation.json

[
{
"ConfigRuleName": "rule01",
"TargetType": "SSM_DOCUMENT",
"TargetId": "AWSConfigRemediation-EnableEbsEncryptionByDefault",
"TargetVersion": "2",
"Parameters": {"AutomationAssumeRole": {
"StaticValue": {
"Values": ["arn:aws:iam::999999999999:role/role01"]
}
}
},
"Automatic": true,
"MaximumAutomaticAttempts": 5,
"RetryAttemptSeconds": 60
}
]

aws configservice put-remediation-configurations \
--remediation-configurations file://remediation.json

aws configservice describe-remediation-configurations \
--config-rule-names rule01

-- 12. オンデマンド評価

aws configservice start-config-rules-evaluation \
--config-rule-names rule01

aws configservice describe-config-rule-evaluation-status

-- 13. 評価結果の削除

aws configservice delete-evaluation-results \
--config-rule-name rule01

-- 14. クリーンアップ

-- 自動修復の削除

aws configservice describe-remediation-configurations \
--config-rule-names rule01

aws configservice delete-remediation-configuration \
--config-rule-name rule01

-- ルールの削除

aws configservice describe-config-rules

aws configservice delete-config-rule \
--config-rule-name rule01

少し時間がかかる

-- IAMロールの削除
aws iam list-roles | grep role01

aws iam detach-role-policy \
--role-name role01 \
--policy-arn arn:aws:iam::999999999999:policy/policy01

aws iam delete-role --role-name role01

-- IAMポリシーの削除
aws iam list-policies | grep policy01

aws iam delete-policy \
--policy-arn arn:aws:iam::999999999999:policy/policy01

-- AWS Config の無効化

aws configservice delete-retention-configuration \
--retention-configuration-name default

aws configservice stop-configuration-recorder \
--configuration-recorder-name default

aws configservice delete-delivery-channel \
--delivery-channel-name default

aws configservice delete-configuration-recorder \
--configuration-recorder-name default

-- SNSトピック削除
aws sns list-topics
aws sns list-subscriptions

aws sns unsubscribe --subscription-arn arn:aws:sns:ap-northeast-1:999999999999:topic01:11111111-2222-3333-4444-555555555555
aws sns delete-topic --topic-arn arn:aws:sns:ap-northeast-1:999999999999:topic01

-- バケットの削除

aws s3 ls

aws s3 rb s3://bucket123 --force