doesn't work with image tomcat:9 about dd-agent HOT 3 CLOSED

Hi @ozbillwang, sorry for the late reply, this issue was fixed in DataDog/datadog-agent#5957, which was released with Agent v7.22.0/6.22.0.

A couple of additional notes:

• To build a custom image based on tomcat with the agent in it, you can also consider building a multi-stage docker image using the official datadog/agent image. Although the recommended deployment would be to run the agent as a separate datadog/agent container.
• For future reference, please note that this repository is home to the (older) Agent v5, the repository of the newer Agent v6/v7 you're referring to in this issue is located here: https://github.com/DataDog/datadog-agent/

In any case, this should be fixed now, so I'll go ahead and close this issue. Feel free to open an issue https://github.com/DataDog/datadog-agent or contact our support team if you're facing further issues.

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do a deep debug, I found the command service datadog-agent stop can't clean dd-agent at all

root@ca2bf4b588d5:/var/log/datadog# service datadog-agent stop
[ ok ] Stopping Datadog Agent: datadog-agent.
[ ok ] Stopping Datadog Process Agent: datadog-agent-process.
[ ok ] Stopping Datadog Trace Agent (APM): datadog-agent-trace.
root@ca2bf4b588d5:/var/log/datadog# ps aux |more
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0   5752  3692 pts/0    Ss   11:19   0:00 bash
dd-agent  3985  1.1  1.1 1410296 97432 ?       Sl   11:35   0:03 /opt/datadog-agent/bin/agent/agent run -p /opt/datadog-agent/run/agent.pid
root      5080  0.0  0.0   9392  3056 pts/0    R+   11:39   0:00 ps aux
root      5081  0.0  0.0   4252   892 pts/0    S+   11:39   0:00 more

I have to run with pkill -15 agent to clean it nicely.

That's the reason, when the install script tries to restart the dd-agent service (service datadog-agent restart), it found the port 5001 is still in use, then start service is failed.

2020-07-24 11:34:06 UTC | CORE | ERROR | (cmd/agent/app/run.go:237 in StartAgent) | Error while starting api server, exiting: Unable to create the api server: listen tcp 127.0.0.1:5001: bind: address already in use

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Thanks a lot for the updates.

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