How to enable Docker Container monitoring in Datadog Agent?

Prereq

• Install Datadog Infra Agent

Step 1 – Enable Datadog Process Monitoring

Step 2 – Install Docker Server

Step 3 – Enable Docker integration with Datadog

# These commands to configure Agent for Docker Intergration.

# Add the user running the Agent to Docker's group.
$ usermod -a -G docker dd-agent


$ cd /etc/datadog-agent/conf.d/docker.d/
$ cp conf.yaml.default conf.yaml
$ vi conf.yaml [ FOLLOW IMAGE BELOW ]
$ systemctl restart datadog-agent
$ systemctl status datadog-agentCode language: PHP (php)

ad_identifiers:
  - _docker

init_config:

instances:

    - url: "unix://var/run/docker.sock"
      new_tag_names: trueCode language: JavaScript (javascript)

How to Check if docker is enabled or not?

$ datadog-agent configcheck
$ datadog-agent check docker
$ datadog-agent status

datadog-agent status | grep docker -B 5 -A 5
      Average Execution Time : 30ms
      Last Execution Date : 2023-09-06 09:02:07 UTC (1693990927000)
      Last Successful Execution Date : 2023-09-06 09:02:07 UTC (1693990927000)


    docker
    ------
      Instance ID: docker [OK]
      Configuration Source: file:/etc/datadog-agent/conf.d/docker.d/conf.yaml.default
      Total Runs: 15
      Metric Samples: Last Run: 11, Total: 116
      Events: Last Run: 1, Total: 1
      Service Checks: Last Run: 1, Total: 15
      Average Execution Time : 4ms
--

  =========
  Collector
  =========
    Last collection time: 2023-09-06 09:02:08
    Docker socket: /var/run/docker.sock
    Number of processes: 0
    Number of containers: 0
    Process Queue length: 0
    RTProcess Queue length: 0
    Connections Queue length: 0
Code language: JavaScript (javascript)

Step 4 – Create few containers and Verify

$ docker run -itd ubuntu
$ docker run -itd ubuntu
$ docker run -itd ubuntu
$ docker ps

CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS         PORTS     NAMES
0bc26ab4b940   ubuntu    "/bin/bash"   3 seconds ago    Up 2 seconds             compassionate_brahmagupta
2fb7163a3a17   ubuntu    "/bin/bash"   8 seconds ago    Up 6 seconds             romantic_hertz
bd76230bbb70   ubuntu    "/bin/bash"   10 seconds ago   Up 8 seconds             compassionate_curran
Code language: JavaScript (javascript)

How to verify the containers at Datadog?

Docker Tutorials Fundamental To Advanced-2021 Crash Course:- https://bit.ly/3hOIbTB

Rajesh Kumar

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