Hi there,

If we issue a bunch of requests for different servers like so:

hosts=(server1 server2)
for host in "${hosts[@]}"; do
    curl -s "http://${RF_HOST}/health?target=$host-idrac&job=redfish" &
done

(note the & at the end of the curl command)

Then we run into an issue where the collector actually only talks to one of the hosts, regardless of the hostname.

I think this is because of a thread safety issue in handler.py.
Even though the app is multithreaded, the same instance of metricsHandler is used for all requests (this is correct behavior).
However, on_get function references self, which means that the requests clobber each other's values.

Specifically, this is a problem for the code that translates hostnames to IPs and vice-versa.
Removing references to self in on_get fixes the issue.

Can you please let me know if I am off base here, or if this makes sense to you?