데이터베이스 모니터링은 쿼리 메트릭, 쿼리 샘플, 실행 계획, 데이터베이스 상태, 장애 조치, 이벤트와 같은 정보를 수집해 Microsoft SQL Server 데이터베이스에 관한 상세한 정보를 가시화합니다.

데이터베이스에서 데이터베이스 모니터링을 활성화하려면 다음 단계를 완료하세요.

1. 에이전트에 데이터베이스 접근 권한 부여
2. 에이전트를 설치 및 설정합니다.
3. Cloud SQL 통합 설치

시작 전 참고 사항

지원되는 SQL Server 버전

2014, 2016, 2017, 2019, 2022

Supported Agent versions

7.41.0+

Performance impact

The default Agent configuration for Database Monitoring is conservative, but you can adjust settings such as the collection interval and query sampling rate to better suit your needs. For most workloads, the Agent represents less than one percent of query execution time on the database and less than one percent of CPU.

Database Monitoring runs as an integration on top of the base Agent (see benchmarks).

Proxies, load balancers, and connection poolers

The Datadog Agent must connect directly to the host being monitored. The Agent should not connect to the database through a proxy, load balancer, or connection pooler. If the Agent connects to different hosts while it is running (as in the case of failover, load balancing, and so on), the Agent calculates the difference in statistics between two hosts, producing inaccurate metrics.

Data security considerations

Read about how Database Management handles sensitive information for information about what data the Agent collects from your databases and how to ensure it is secure.

에이전트에 접근 권한 부여

Datadog 에이전트가 통계와 쿼리를 수집하려면 데이터베이스에 읽기 전용 액세스가 필요합니다.

Cloud SQL 인스턴스에 datadog 사용자를 생성합니다.

에이전트에 읽기 전용 액세스 권한을 유지하려면 CustomerDbRootRole 기본값에서 datadog 사용자를 제거합니다. 그리고 에이전트에 필요한 명시적인 권한을 부여합니다.

GRANT VIEW SERVER STATE to datadog as CustomerDbRootRole;
GRANT VIEW ANY DEFINITION to datadog as CustomerDbRootRole;
ALTER SERVER ROLE CustomerDbRootRole DROP member datadog;

각 애플리케이션 추가 데이터베이스에 datadog 사용자를 생성합니다.

USE [database_name];
CREATE USER datadog FOR LOGIN datadog;

Google Cloud SQL에서는 CONNECT ANY DATABASE를 허용하지 않기 때문에 이 단계를 실행해야 합니다. Datadog 에이전트가 각 데이터베이스에 연결되어 있어야 해당 데이터베이스에 맞는 파일 I/O 통계를 수집할 수 있습니다.

에이전트 설치 및 구성

Google Cloud에서는 호스트에 바로 액세스하는 것을 허용하지 않기 때문에 SQL 서버 호스트와 통신할 수 있는 별도 호스트에 Datadog 에이전트를 설치해야 합니다. 에이전트를 설치하고 실행하는 데는 여러 가지 방법이 있습니다.

init_config:
instances:
  - dbm: true
    host: '<HOSTNAME>,<SQL_PORT>'
    username: datadog
    password: '<PASSWORD>'
    connector: adodbapi
    provider: MSOLEDBSQL
    tags:  # Optional
      - 'service:<CUSTOM_SERVICE>'
      - 'env:<CUSTOM_ENV>'
    # 프로젝트와 인스턴스를 추가한 후에는 CPU, 메모리 등과 같은 추가 클라우드 데이터를 풀하도록 Datadog Google Cloud(GCP) 통합을 설정합니다.
    gcp:
      project_id: '<PROJECT_ID>'
      instance_id: '<INSTANCE_ID>'

connector: adodbapi
adoprovider: MSOLEDBSQL19  # 버전 18 이하에서는 MSOLEDBSQL로 교체

connector: odbc
driver: '{ODBC Driver 18 for SQL Server}'

init_config:
instances:
  - dbm: true
    host: '<HOSTNAME>,<SQL_PORT>'
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    connector: odbc
    driver: '<Driver from the `odbcinst.ini` file>'
    tags:  # Optional
      - 'service:<CUSTOM_SERVICE>'
      - 'env:<CUSTOM_ENV>'
    # 프로젝트 및 인스턴스를 추가한 후, GCP(Datadog Google Cloud) 통합을 설정하여 CPU, 메모리 등과 같은 추가 클라우드 데이터를 가져옵니다.
    gcp:
      project_id: '<PROJECT_ID>'
      instance_id: '<INSTANCE_ID>'

export DD_API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
export DD_AGENT_VERSION=7.51.0

docker run -e "DD_API_KEY=${DD_API_KEY}" \
  -v /var/run/docker.sock:/var/run/docker.sock:ro \
  -l com.datadoghq.ad.check_names='["sqlserver"]' \
  -l com.datadoghq.ad.init_configs='[{}]' \
  -l com.datadoghq.ad.instances='[{
    "dbm": true,
    "host": "<HOSTNAME>",
    "port": <SQL_PORT>,
    "connector": "odbc",
    "driver": "ODBC Driver 18 for SQL Server",
    "username": "datadog",
    "password": "<PASSWORD>",
    "tags": [
      "service:<CUSTOM_SERVICE>"
      "env:<CUSTOM_ENV>"
    ],
    "gcp": {
      "project_id": "<PROJECT_ID>",
      "instance_id": "<INSTANCE_ID>"
    }
  }]' \
  gcr.io/datadoghq/agent:${DD_AGENT_VERSION}

cluster_check: true  # Make sure to include this flag
init_config:
instances:
  - dbm: true
    host: '<HOSTNAME>'
    port: <SQL_PORT>
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    connector: "odbc"
    driver: "ODBC Driver 18 for SQL Server"
    tags:  # Optional
      - 'service:<CUSTOM_SERVICE>'
      - 'env:<CUSTOM_ENV>'
    # 프로젝트 및 인스턴스를 추가한 후, GCP(Datadog Google Cloud) 통합을 설정하여 CPU, 메모리 등과 같은 추가 클라우드 데이터를 가져옵니다.
    gcp:
      project_id: '<PROJECT_ID>'
      instance_id: '<INSTANCE_ID>'

apiVersion: v1
kind: Service
metadata:
  name: sqlserver-datadog-check-instances
  annotations:
    ad.datadoghq.com/service.check_names: '["sqlserver"]'
    ad.datadoghq.com/service.init_configs: '[{}]'
    ad.datadoghq.com/service.instances: |
      [
        {
          "dbm": true,
          "host": "<HOSTNAME>",
          "port": <SQL_PORT>,
          "username": "datadog",
          "password": "ENC[datadog_user_database_password]",
          "connector": "odbc",
          "driver": "ODBC Driver 18 for SQL Server",
          "tags": ["service:<CUSTOM_SERVICE>", "env:<CUSTOM_ENV>"],  # Optional
          "gcp": {
            "project_id": "<PROJECT_ID>",
            "instance_id": "<INSTANCE_ID>"
          }
        }
      ]      
spec:
  ports:
  - port: 1433
    protocol: TCP
    targetPort: 1433
    name: sqlserver

에이전트 설정 예시

Connecting with DSN using the ODBC driver on Linux

1. Locate the odbc.ini and odbcinst.ini files. By default, these are placed in the /etc directory when installing ODBC.

2. Copy the odbc.ini and odbcinst.ini files into the /opt/datadog-agent/embedded/etc folder.

3. Configure your DSN settings as follows:

   odbcinst.ini must provide at least one section header and ODBC driver location.

   Example:

   [ODBC Driver 18 for SQL Server]
   Description=Microsoft ODBC Driver 18 for SQL Server
   Driver=/opt/microsoft/msodbcsql18/lib64/libmsodbcsql-18.3.so.2.1
   UsageCount=1
   

   odbc.ini must provide a section header and a Driver path that matches odbcinst.ini.

   Example:

   [datadog]
   Driver=/opt/microsoft/msodbcsql18/lib64/libmsodbcsql-18.3.so.2.1
   

4. Update the /etc/datadog-agent/conf.d/sqlserver.d/conf.yaml file with your DSN information.

   Example:

   instances:
     - dbm: true
       host: 'localhost,1433'
       username: datadog
       password: 'ENC[datadog_user_database_password]'
       connector: 'odbc'
       driver: '{ODBC Driver 18 for SQL Server}' # This is the section header of odbcinst.ini
       dsn: 'datadog' # This is the section header of odbc.ini
   

5. Restart the Agent.

Using AlwaysOn

Note: For AlwaysOn users, the Agent must be installed on a separate server and connected to the cluster through the listener endpoint. This is because information about Availability Group (AG) secondary replicas is collected from the primary replica. Additionally, installing the Agent in this way helps to keep it up and running in the event of a failover.

instances:
  - dbm: true
    host: 'shopist-prod,1433'
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    include_ao_metrics: true  # If Availability Groups is enabled
    include_fci_metrics: true   # If Failover Clustering is enabled

Monitoring SQL Server Agent Jobs

Note: For monitoring SQL Server Agent jobs, the Datadog Agent must have access to the [msdb] database. Monitoring of SQL Server Agent jobs is supported on SQL Server versions 2016 and newer. Starting from Agent v7.57, the Datadog Agent can collect SQL Server Agent job metrics and histories. To enable this feature, set enabled to true in the agent_jobs section of the SQL Server integration configuration file. The collection_interval and history_row_limit fields are optional.

instances:
  - dbm: true
    host: 'shopist-prod,1433'
    username: datadog
    password: '<PASSWORD>'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    agent_jobs:
      enabled: true
      collection_interval: 15
      history_row_limit: 10000

Collecting schemas

Starting from Agent v7.56, the Datadog Agent can collect schema information from SQLServer databases running SQLServer 2017 or higher. To enable this feature, use the schemas_collection option. Schemas are collected on databases for which the Agent has CONNECT access.

Note: For schema collection on RDS instances, it is necessary to grant explicit CONNECT access to the datadog user for each database on the instance. See Grant the Agent access for more details.

Use the database_autodiscovery option to avoid specifying each logical database. See the sample sqlserver.d/conf.yaml for more details.

init_config:
instances:
 # This instance detects every logical database automatically
  - dbm: true
        host: 'shopist-prod,1433'
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    database_autodiscovery: true
    schemas_collection:
      enabled: true
    # Optional: enable metric collection for indexes
    include_index_usage_metrics: true
# This instance only collects schemas and index metrics from the `users` database
  - dbm: true
        host: 'shopist-prod,1433'
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    database: users
    schemas_collection:
      enabled: true
    include_index_usage_metrics: true

One Agent connecting to multiple hosts

It is common to configure a single Agent host to connect to multiple remote database instances (see Agent installation architectures for DBM). To connect to multiple hosts, create an entry for each host in the SQL Server integration config. In these cases, Datadog recommends limiting the number of instances per Agent to a maximum of 10 database instances to guarantee reliable performance.

init_config:
instances:
  - dbm: true
    host: 'example-service-primary.example-host.com,1433'
    username: datadog
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    password: 'ENC[datadog_user_database_password]'
    tags:
      - 'env:prod'
      - 'team:team-discovery'
      - 'service:example-service'
  - dbm: true
    host: 'example-service–replica-1.example-host.com,1433'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    tags:
      - 'env:prod'
      - 'team:team-discovery'
      - 'service:example-service'
  - dbm: true
    host: 'example-service–replica-2.example-host.com,1433'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    tags:
      - 'env:prod'
      - 'team:team-discovery'
      - 'service:example-service'
    [...]

Running custom queries

To collect custom metrics, use the custom_queries option. See the sample sqlserver.d/conf.yaml for more details.

init_config:
instances:
  - dbm: true
    host: 'localhost,1433'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    custom_queries:
    - query: SELECT age, salary, hours_worked, name FROM hr.employees;
      columns:
        - name: custom.employee_age
          type: gauge
        - name: custom.employee_salary
           type: gauge
        - name: custom.employee_hours
           type: count
        - name: name
           type: tag
      tags:
        - 'table:employees'

Working with hosts through a remote proxy

If the Agent must connect to a database host through a remote proxy, all telemetry is tagged with the hostname of the proxy rather than the database instance. Use the reported_hostname option to set a custom override of the hostname detected by the Agent.

init_config:
instances:
  - dbm: true
    host: 'localhost,1433'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    reported_hostname: products-primary
  - dbm: true
    host: 'localhost,1433'
    connector: adodbapi
    adoprovider: MSOLEDBSQL
    username: datadog
    password: 'ENC[datadog_user_database_password]'
    reported_hostname: products-replica-1

Discovering ports automatically

SQL Server Browser Service, Named Instances, and other services can automatically detect port numbers. You can use this instead of hardcoding port numbers in connection strings. To use the Agent with one of these services, set the port field to 0.

For example, a Named Instance config:

init_config:
instances:
  - host: <hostname\instance name>
    port: 0

Google Cloud SQL 통합 설치

Google Cloud SQL에서 좀 더 포괄적인 데이터베이스를 수집하려면 Google Cloud SQL 통합을 설치하세요.

참고 자료

추가 유용한 문서, 링크 및 기사:

SQL Server 통합설명서