Working with Magento EE 188.8.131.52 running on CentOS LAMP stack. Attempting to utilize Solr Search.
I'm creating a staging site. The codebase and server configuration are essentially mirrors of production. Everything seems configured correctly but when I attempt to run Test Connection of Solr from System > Config > Catalog > Catalog > Catalog Search I get "Connection failed! Test again?".
I know I'm running Solr, I'm starting it up with this command which is taken from the Magento 1.x / Solr doc:
java -jar /root/solr/apache-solr-3.6.2/example/start.jar
To rule out any firewalls or security rules, I monitored incoming traffic to Solr's default port (i.e. 8983):
tcpdump -i eth0 port 8983
Ran the test from Magento's admin, no incoming traffic/packets.
I then ran the following command to ensure the port was open and receiving:
404, but at least a server response and a visible request in my tcpdump.
Also to be clear: My codebase, database and Solr instance are all hosted on a single environment, so the request Solr would be making would be to 127.0.0.1:8983, so I tested this command as well:
Same result, packets and request visible.
For whatever reason, the Solr connectivity test in the admin isn't actually requesting anything - it seems. So what could be wrong? Solr was part of Magento EE, all I did was install according to the dev docs provided by Magento and it worked on my production site. How do I proceed with debugging as there isn't necessarily a Magento extension to reinstall?