master unreachable - attempting simple replication

[Martin Ostrovsky <ma...@gmail.com>]

I've got a master set up on a public IP and I'm using my laptop as the slave, just trying to get a simple replication going. When I'm on my slave machine and I look at the replication tab of the admin, it says my master is unreachable, however, I can hit the master's replication handler using the public IP through a browser.

I thought it might be a DNS issue so instead of using the domain name, I switched to the raw IP, still no luck, says master is unreachable.

Definitely not firewall rules either.

Where can I look to see what's causing the failure?

Thanks.

RE: master unreachable - attempting simple replication

["Jaeger, Jay - DOT" <Ja...@dot.wi.gov>]

I'd suggest looking at the logs of the master to see if the request is getting thru or not, or if there are any errors logged there.  If the master has a replication config error, it might show up there.

We just went thru some master/slave troubleshooting.  Here are some things that you might look at:

Does slave replication work when it is local to the master?  If not, debug that first.

The browser might be using an http proxy.  I don't know of Solr pays attention to the http_proxy environment variable.

Your master might require a user ID, password (and realm), but you haven't provided it in the slave config.

What container is your master running in?  Under some containers (e.g. WebSphere) you need to add some stuff to web.xml, or replication will fail with a 404 -- but work OK from a browser AFTER accessing the admin page, because the container does not know about /replication or /core-name/replication because there isn't anything for that in web.xml.  Once you authenticate, this problem disappears.  (This was what we ran into, solution documented earlier this week on the list).

-----Original Message-----
From: Martin Ostrovsky [mailto:martin.ostrovsky@gmail.com] 
Sent: Tuesday, August 16, 2011 12:27 PM
To: solr-user@lucene.apache.org
Subject: master unreachable - attempting simple replication 

I've got a master set up on a public IP and I'm using my laptop as the slave, just trying to get a simple replication going. When I'm on my slave machine and I look at the replication tab of the admin, it says my master is unreachable, however, I can hit the master's replication handler using the public IP through a browser.

I thought it might be a DNS issue so instead of using the domain name, I switched to the raw IP, still no luck, says master is unreachable.

Definitely not firewall rules either.

Where can I look to see what's causing the failure?

Thanks.