Datadog Tutorials: Send log to Datadog using api through telnet and curl

TCP log collection is not supported from 2026

Reference – https://docs.datadoghq.com/api/latest/logs/

Step 1 – How to get API of Datadog Agent?

• https://app.datadoghq.com/organization-settings/api-keys

Step 2 – Go to Linux Cmd and run following commands.

Using Telnet

$ telnet intake.logs.datadoghq.com 10514
4396f0b432e47383f3dddddd3b1b7 Hell0 Everyone, this is Rajesh

4396f0b432e473ddddddb45cc3b1b7 Hell0 Everyone, this is Rajesh1

4396f0b432e47ddddd17b45cc3b1b7 Hell0 Everyone, this is Rajesh3

87b9dbcda7e5d069cd30a0f68154cca27 {"message":"Welcome to Datadog Session by DevOpsSchool - 1", "ddtags":"env:dev", "ddsource":"devopsschool-1", "hostname":"gs-hostame", "service":"user"}

87b9dbcda7ed5069cd30a0f68154cca27 {"message":"Welcome to Datadog Session by DevOpsSchool - 2", "ddtags":"env:prod", "ddsource":"devopsschool-2", "hostname":"gs-hostame", "service":"user"}

87b9dbcda7ed5069cd30a0f68154cca27 {"message":"Welcome to Datadog Session by DevOpsSchool - 3", "ddtags":"env:qa", "ddsource":"devopsschool-3", "hostname":"gs-hostame", "service":"user"}

87b9dbcda7de5069cd30a0f68154cca27 {"message":"Welcome to Datadog Session by DevOpsSchool - 4", "ddtags":"env:us", "ddsource":"devopsschool-3", "hostname":"gs-hostame", "service":"user"}Code language: JavaScript (javascript)

Using curl

curl -X POST "https://http-intake.logs.datadoghq.com/api/v2/logs" \
-H "Content-Type: application/json" \
-H "DD-API-KEY: 87b9dbcda7e5069cd30a4468154cca27" \
-d @- << EOF
[
  {
    "ddsource": "nginx",
    "ddtags": "env:staging,version:5.1",
    "hostname": "i-012345678",
    "message": "2019-11-19T14:37:58,995 INFO [process.name][20081] Hello World",
    "service": "payment"
  }
]
EOF
Code language: JavaScript (javascript)

Rajesh Kumar

I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.

I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.