Unable to start linux:metrics and mysql:metrics

pmm-admin list shows:
linux:metrics ip-172-31-8-45 42000 YES -
mysql:metrics ip-172-31-8-45 42002 YES root:***@tcp(127.0.0.1:3306)

however pmm-admin check-network shows:

  • Connection: Client <-- Server

SERVICE TYPE NAME REMOTE ENDPOINT STATUS HTTPS/TLS PASSWORD


linux:metrics ip-172-31-8-45 52.80.22.165–>172.31.8.45:42000 DOWN NO -
mysql:metrics ip-172-31-8-45 52.80.22.165–>172.31.8.45:42002 DOWN NO -

And then I try to wget https://52.80.22.165:42000/metrics --no-check-certificate in pmm server, it display "Connecting to 52.80.22.165:42000… failed: Connection timed out.Retrying."I already open 42000 and 42002 port for pmm server.
so I cannot get the data in Metrics Monitor Page,
How can I fix them?
Thanks a lot!