I’ve done a fresh install on a newly provisioned Ubuntu 14 LTS box.  Installed 
Mongodb and ElasticSearch (0.90.x) using the apt procedures on both sites.  
Installed Graylog2 using the deb instructions.

I’ve worked through a few issues and my most recent error is:

jschoolcraft@logserver:~$ tail -f /var/log/graylog2-web/application.log
Caused by: java.net.ConnectException: Connection refused: /127.0.0.1:12900 to 
http://127.0.0.1:12900/system/cluster/node
        at 
com.ning.http.client.providers.netty.NettyConnectListener.operationComplete(NettyConnectListener.java:103)
 ~[com.ning.async-http-client-1.7.18.jar:na]
        ... 12 common frames omitted
Caused by: java.net.ConnectException: Connection refused: /127.0.0.1:12900
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) 
~[na:1.7.0_65]
        at 
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739) 
~[na:1.7.0_65]
        at 
org.jboss.netty.channel.socket.nio.NioClientBoss.connect(NioClientBoss.java:152)
 ~[io.netty.netty-3.9.3.Final.jar:na]
        at 
org.jboss.netty.channel.socket.nio.NioClientBoss.processSelectedKeys(NioClientBoss.java:105)
 ~[io.netty.netty-3.9.3.Final.jar:na]
        ... 8 common frames omitted

The relevant bits (I think) from /etc/graylog2.conf are:

# REST API listen URI. Must be reachable by other graylog2-server nodes if you 
run a cluster.
rest_listen_uri = http://127.0.0.1:12900/
# rest_listen_uri = http://0.0.0.0:12900/

# REST API transport address. Defaults to the value of rest_listen_uri. 
Exception: If rest_listen_uri
# is set to a wildcard IP address (0.0.0.0) the first non-loopback IPv4 system 
address is used.
# This will be promoted in the cluster discovery APIs and other nodes may try 
to connect on this
# address. (see rest_listen_uri)
#rest_transport_uri = http://192.168.1.1:12900/
rest_transport_uri = http://127.0.0.1:12900/

And from /etc/graylog2/web/graylog2-web-interface.conf are:

# graylog2-server REST URIs (one or more, comma separated) For example: 
"http://127.0.0.1:12900/,http://127.0.0.1:12910/";
graylog2-server.uris="http://127.0.0.1:12900/";
# graylog2-server.uris="http://0.0.0.0:12900/";

here are active TCP connections:

foo@logserver:~$ netstat -ltn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:2812          0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN
tcp6       0      0 :::9200                 :::*                    LISTEN
tcp6       0      0 :::9300                 :::*                    LISTEN
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 :::25                   :::*                    LISTEN
tcp6       0      0 :::9000                 :::*                    LISTEN

and UDP connections:

foo@logserver:~$ netstat -lun
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
udp        0      0 10.208.34.47:123        0.0.0.0:*
udp        0      0 127.0.0.1:123           0.0.0.0:*
udp        0      0 0.0.0.0:123             0.0.0.0:*
udp6       0      0 fe80::be76:4eff:fe0:123 :::*
udp6       0      0 ::1:123                 :::*
udp6       0      0 :::123                  :::*
udp6       0      0 :::54328                :::*

Any suggestions where I should look?
-- 
Jeff Schoolcraft

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