tool · inferred from evidence
Datadog-agent
Datadog's agent for log collection and monitoring.
- Datadog on ECS: one agent per EC2 host as a daemon service, Fargate is a separate setup
ECS on EC2: run one Datadog agent container per EC2 host as a daemon service task definition. ECS on Fargate is a different integration with its own docs page. Not the full reference manual.
- Datadog DD_SITE: the region parameter that must match where your org lives
DD_SITE tells the agent which Datadog region your org lives in. US1 is datadoghq.com, EU is datadoghq.eu, plus us3, us5, ap1, ap2 and gov sites. Wrong site means a healthy-looking agent that never shows up.
- 403 Forbidden on intake: the API key is wrong, revoked, or for another region
The agent logs 403 Forbidden on intake payloads when the API key is wrong, revoked, or belongs to another region. Data stops flowing but the agent keeps running. Not for different error messages.
- 429 Too Many Requests from the Datadog API: back off with jitter, then reduce calls
Datadog answers 429 Too Many Requests when you exceed API rate limits. Back off, honor Retry-After, and stop hammering the endpoint that throttled you. Not the full reference manual.