容器内并无错误日志:
$ curl http://127.0.0.1:1920/metrics/cita
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>500 Internal Server Error</title>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.</p>
$ docker logs --details citamon_agent_proxy_exporter
172.22.0.1 - - [02/Mar/2020:02:25:53 +0000] "GET /metrics/cita HTTP/1.1" 500 290 "-" "curl/7.58.0" "-"
172.22.0.1 - - [02/Mar/2020:02:28:04 +0000] "GET /metrics/cita HTTP/1.1" 500 290 "-" "curl/7.58.0" "-"
172.22.0.1 - - [02/Mar/2020:02:32:41 +0000] "GET /metrics/cita HTTP/1.1" 500 290 "-" "curl/7.58.0" "-"