cassandra.yaml

[A J <s5...@gmail.com>]

Hello,
I am trying to setup a cluser (for the first time) of a few nodes. Had
a few questions related to that.

I want the following properties in my cluster:
1. Not to use RP but BOP
2. Specify initial token myself on each node.
3. Change a few memtable defaults.
4. For Keyspaces to use NetworkTopologyStrategy rather than the
default SimpleStrategy. I wish to specify how many copies each DC
should carry.

For the above I changed the cassandra.yaml and
cassandra-topology.properties files appropriately on the first node.

My question is: For the rest of the nodes, do I have to make all of
the above changes first to their respective config files or just a
smaller subset such as (listen_address, seed, autobootstrap and
rpc_address) ? What happens if there is a conflict between the yaml
files on different nodes (say one says RP and other says BOP. Or say
one says PropertyFileSnitch and the other says SimpleSnitch)?

Is there a good post or video tutorial somewhere that walks step by
step of cassandra cluster setup, which talks of all these and then how
to change various knobs (tokens,replication_factor,
cassandra-topology.properties etc) and see their effect on the cluster
?

Many thanks.

Re: cassandra.yaml

[Aaron Morton <aa...@thelastpickle.com>]

All nodes should have the correct configuration files. With the only difference been the initial token.

Aaron

On 3/03/2011, at 6:18 AM, A J <s5...@gmail.com> wrote:

> Hello,
> I am trying to setup a cluser (for the first time) of a few nodes. Had
> a few questions related to that.
> 
> I want the following properties in my cluster:
> 1. Not to use RP but BOP
> 2. Specify initial token myself on each node.
> 3. Change a few memtable defaults.
> 4. For Keyspaces to use NetworkTopologyStrategy rather than the
> default SimpleStrategy. I wish to specify how many copies each DC
> should carry.
> 
> For the above I changed the cassandra.yaml and
> cassandra-topology.properties files appropriately on the first node.
> 
> My question is: For the rest of the nodes, do I have to make all of
> the above changes first to their respective config files or just a
> smaller subset such as (listen_address, seed, autobootstrap and
> rpc_address) ? What happens if there is a conflict between the yaml
> files on different nodes (say one says RP and other says BOP. Or say
> one says PropertyFileSnitch and the other says SimpleSnitch)?
> 
> Is there a good post or video tutorial somewhere that walks step by
> step of cassandra cluster setup, which talks of all these and then how
> to change various knobs (tokens,replication_factor,
> cassandra-topology.properties etc) and see their effect on the cluster
> ?
> 
> Many thanks.