start & stop & start temboard-agent (9.0.1) quickly does not work

[l00ptr]

Hello,

Since temboard-agent 9.0.1 i have a few issues when trying to stop & start quickly (eg using some automated tests in CI) the agent, here are a few steps to reproduce what i observe on my side (outside of my tests suite / CI):

• Install temboard-agent 9.0.1
• Run temboard-agent in backround: temboard-agent --config /tmp/temboard-agent-17-test.conf &
• Get the PID of the temboard-agent (from previous step)
• kill the first temboard-agent and launch (quickly) a new one temboard-agent with: kill <pid first agent> && temboard-agent --config /tmp/temboard-agent-17-test.conf
• After the last operation, we can observe this error:

INFO:  app: Starting temboard-agent. version=9.0.1
INFO:  app: Using config file /tmp/temboard-agent-17-test.conf.
WARNING:  agent: Hostname dontbecurious is not a FQDN.
INFO:  serve: Resetting monitoring data.
CRITICAL:  app: Failed to start HTTPS server: [Errno 98] Address already in use.

When I run top, pstree or any other tool to watch the processes, i can see a few temboard processes (and the especially the web worker) taking a few seconds before dying. So i guess killing all the process take some time the HTTP(s) port is kept open / busy by a nearly dead process.