1 - What is Observability

observability can discern system health by analyzing its inputs and outputs.

#2 - What is Datadog?

Datadog is an observability service.

#3 - What is Agent and How it works?

An Agent once installed on the required system collects the data &send that for further harvesting * data ingestion part

4 - List of top 10 datadog agent commands with single line comments

Start an Agent
$ systemctl start datadog-agent
Stop an Agent
$ systemctl stop datadog-agent
Restrat an Agent
$ systemctl restart datadog-agent
Check the Agent status
$ systemctl status datadog-agent
looking into the log file
$ more /etc/datadog-agent/datadog.yaml
validating the config file syntax
$ datadog-agent configcheck
checking the Agent health
$ datadog-agent health
checking the hostname where the Agent is hosted
$ datadog-agent hostname
Agent Version check
$ datadog-agent version