This new version is vastly faster than the previous revisions. It's very 
nice. Thank you all for putting in the effort. Hopefully I'll be able to 
convince management to secure a support contract once .20 becomes more 
release-worthy.

Now, I'm about to pull my hair out. I had a working implementation and one 
afternoon I altered start up configuration to allow for more elasticsearch 
and graylog heap memory, and I simply cannot get it to connect to the 
cluster. I've always had zen discovery problems, even years ago with older 
versions. When I upgrade to the new RC1.1, I blew up my old elasticsearch 
data (about 8TB worth of logdata) and wiped my mongo DB to start fresh.
Bigdesk has my cluster status as green, all of the indices appear to be 
accessible.

Here's the nitty gritty of our environment:

Server: CentOS release 6.5 (Final)
graylog2.conf <http://pastebin.com/Z14c6K1k>
elasticsearch-graylog.conf <http://pastebin.com/GMJMehAx>
elasticsearch.yml <http://pastebin.com/CMNyJANz>
ifconfig <http://pastebin.com/k7wBwEgX>
graylog2-server.jar --debug <http://pastebin.com/95r4ZuZn>
Elasticsearch's Start Log <http://pastebin.com/DqRqqCKy>
Non-debug graylog-server service start <http://pastebin.com/fUagNfiA>

Here's some stuff out of BigDesk elasticsearch plugin running on port 9200:
Elasticsearch version: 0.90.10
Indices Docs count: 705,052,192
HTTP address: inet[/172.16.1.166:9200]
Bound address: inet[/0:0:0:0:0:0:0:0:9200]
Publish address: inet[/172.16.1.166:9200]
Transport address: inet[/172.16.1.166:9300]
Bound address: inet[/0:0:0:0:0:0:0:0:9300]
Publish address: inet[/172.16.1.166:9300]


   - I've followed this guide on Torch.sh: 
   
http://support.torch.sh/help/kb/graylog2-server/configuring-and-tuning-elasticsearch-for-graylog2-v0200
   - It doesn't matter if iptables is running or not.
   - Multicast won't work in our environment.
   - Setting specific bind addresses for either elasticsearch or graylog 
   won't appear to work. As you can see, I have two physical interfaces. I 
   want to listen on .166 for my graylog inputs, .165 is for logstash for 
   cisco log reformatting.  I honestly don't care what interface elasticsearch 
   listens on as long as it's consistant.
   - Graylog is configured to NOT be a master or a data node both in 
   graylog.conf and elasticsearch-graylog.con (the elasticsearch_config_file 
   I'm using - it is DIFFERENT than the elasticsearch config file, that's 
   correct, right?). Commenting those master/data lines out in graylog2.conf 
   doesn't seem to help the situation either.
   
What is so perplexing is the setup was working just fine previously - I 
could start/stop the services without issue. I'm running out of things to 
try and elasticsearch articles and threads on this problem to read.
Am I completely missing something? Is IPv6 breaking things?

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