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From: Jonathan Ellis <jbellis@gmail.com>
Date: Thu, 21 Apr 2011 10:33:40 -0500
Message-ID: <BANLkTi=tFb5tY404SDQwvQgMUgxSntfJ_Q@mail.gmail.com>
Subject: Re: How to change the seed node used to discover other nodes in the
 ring?
To: user@cassandra.apache.org
Cc: hector-users@googlegroups.com
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describe_cluster is showing the value of listen_address

On Thu, Apr 21, 2011 at 9:28 AM, Roshan Dawrani <roshandawrani@gmail.com> w=
rote:
> Hi,
> In our Cassandra/Hector environment, we are trying to turn the
> auto-discovery of nodes in the ring on. We have created the DB using the
> following default in cassandra.yaml
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> # Addresses of hosts that are deemed contact points.
> # Cassandra nodes use this list of hosts to find each other and learn
> # the topology of the ring. =A0You must change this if you are running
> # multiple nodes!
> seeds:
> =A0=A0 =A0- 127.0.0.1
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> We don't want 127.0.0.1 to be used as the seed node. Our single node is
> setup elsewhere right now.
> Changing it in cassandra.yaml is not taking any immediate effect?
> Even after changing it in cassandra.yaml, describe cluster continues to s=
how
> "=A0b2844cbc-5c62-11e0-9166-e700f669bcfc: [127.0.0.1]"
> Does this configuration get stored in some system table? How can I change=
 it
> now? Through JMX? Some specific command?
> --
> Roshan
> Blog: http://roshandawrani.wordpress.com/
> Twitter: @roshandawrani
> Skype: roshandawrani
>
>


--=20
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com