Member Nodes

The ping service is used as a lightweight "are you alive" mechanism and is used by DataONE infrastructure to detect outages of Member Nodes.

The USGS_SDC member node responds with a 500 Service Failure error when connecting to the ping service:

curl -v "http://usgs.ornl.gov/USGS_MN/mn/v1/monitor/ping"
* Trying 160.91.134.21...
* Connected to usgs.ornl.gov (160.91.134.21) port 80 (#0)

GET /USGS_MN/mn/v1/monitor/ping HTTP/1.1
Host: usgs.ornl.gov
User-Agent: curl/7.47.0
Accept: /

< HTTP/1.1 500 Internal Server Error
< Date: Mon, 30 Oct 2017 18:22:49 GMT
< Server: Restlet-Framework/2.0.11
< Expires: Mon, 30 Oct 2017 19:22:49 GMT
< Last-Modified: Thu, 01 Jan 1970 00:00:00 GMT
< Accept-Ranges: bytes
< Expires: Mon, 30 Oct 2017 19:22:49 GMT
< Last-Modified: Thu, 01 Jan 1970 00:00:00 GMT
< Content-Length: 0
< Accept-Ranges: bytes
< Content-Type: text/html;charset=utf-8
< Connection: close
<
* Closing connection 0