I've been unable to get Teamcity to connect to JIRA. Teamcity is behind a proxy, our Jira instance is internet-accessible.
I've confirmed that with a local instance of TeamCity (via Docker), I can connect to our Jira instance.
Teamcity is running on Centos7. (real proxy server renamed to proxy.mydomain.net)
Here is the Java Configuration as listed at /admin/admin.html?item=diagnostics&tab=dumps
Java version: 1.8.0_60
Java VM info: Java HotSpot(TM) 64-Bit Server VM
Java Home path: /usr/java/jdk1.8.0_60/jre
Server: Apache Tomcat/7.0.59
I've confirmed I'm able to connect to a Github VCS root (so internet access works).
The way I verified this is an issue with the proxy (and not Jira) was using ngrok. https://ngrok.com/
Setting up an NGROK tunnel, it tells me when requests come in, and what the URL is of the request (even if that request ultimately goes nowhere)
I've confirmed that the request never gets in NGROK which means that it's not using the proxy settings. I can't seem to figure out what's going on.