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Add new cassandra environment variables, point docs to 3.0 #387

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Add new cassandra environment variables, point docs to 3.0 #387

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Add new cassandra environment variables, point docs to 3.0
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@yosifkit
yosifkit committed Nov 13, 2015
commit 63e128c3f09589bb5a47f3f8b994db2258613ddf
24 changes: 15 additions & 9 deletions cassandra/content.md
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Expand Up @@ -88,37 +88,43 @@ When you start the `%%REPO%%` image, you can adjust the configuration of the Cas

### `CASSANDRA_LISTEN_ADDRESS`

This variable is for controlling which IP address to listen for incoming connections on. The default value is `auto`, which will set the [`listen_address`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__listen_address) option in `cassandra.yaml` to the IP address of the container as it starts. This default should work in most use cases.
This variable is for controlling which IP address to listen for incoming connections on. The default value is `auto`, which will set the [`listen_address`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__listen_address) option in `cassandra.yaml` to the IP address of the container as it starts. This default should work in most use cases.

### `CASSANDRA_BROADCAST_ADDRESS`

This variable is for controlling which IP address to advertise to other nodes. The default value is the velue of `CASSANDRA_LISTEN_ADDRESS`. It will set the [`broadcast_address`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__broadcast_address) and [`broadcast_rpc_address`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__broadcast_rpc_address) options in `cassandra.yaml`.
This variable is for controlling which IP address to advertise to other nodes. The default value is the velue of `CASSANDRA_LISTEN_ADDRESS`. It will set the [`broadcast_address`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__broadcast_address) and [`broadcast_rpc_address`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__broadcast_rpc_address) options in `cassandra.yaml`.

**Note:** `rpc_address` is always set to the wildcard address (`0.0.0.0`), which means this value cannot be the wildcard address (and thus must be a specific address).
### `CASSANDRA_RPC_ADDRESS`

This variable is for controlling which address to bind the thrift rpc server to. If you do not specify an address, the wildcard address (`0.0.0.0`) will be used. It will set the [`rpc_address`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__rpc_address) option in `cassandra.yaml`.

### `CASSANDRA_START_RPC`

This variable is for controlling if the thrift rpc server is started. It will set the [`start_rpc`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__start_rpc) option in `cassandra.yaml`.

### `CASSANDRA_SEEDS`

This variable is the comma-separated list of IP addresses used by gossip for bootstrapping new nodes joining a cluster. It will set the `seeds` value of the [`seed_provider`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__seed_provider) option in `cassandra.yaml`. The `CASSANDRA_BROADCAST_ADDRESS` will be added the the seeds passed in so that the sever will talk to itself as well.
This variable is the comma-separated list of IP addresses used by gossip for bootstrapping new nodes joining a cluster. It will set the `seeds` value of the [`seed_provider`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__seed_provider) option in `cassandra.yaml`. The `CASSANDRA_BROADCAST_ADDRESS` will be added the the seeds passed in so that the sever will talk to itself as well.

### `CASSANDRA_CLUSTER_NAME`

This variable sets the name of the cluster and must be the same for all nodes in the cluster. It will set the [`cluster_name`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__cluster_name) option of `cassandra.yaml`.
This variable sets the name of the cluster and must be the same for all nodes in the cluster. It will set the [`cluster_name`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__cluster_name) option of `cassandra.yaml`.

### `CASSANDRA_NUM_TOKENS`

This variable sets number of tokens for this node. It will set the [`num_tokens`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__num_tokens) option of `cassandra.yaml`.
This variable sets number of tokens for this node. It will set the [`num_tokens`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__num_tokens) option of `cassandra.yaml`.

### `CASSANDRA_DC`

This variable sets the datacenter name of this node. It will set the [`dc`](http://docs.datastax.com/en/cassandra/2.1/cassandra/architecture/architectureSnitchGossipPF_c.html) option of `cassandra-rackdc.properties`.
This variable sets the datacenter name of this node. It will set the [`dc`](http://docs.datastax.com/en/cassandra/3.0/cassandra/architecture/archsnitchGossipPF.html) option of `cassandra-rackdc.properties`.

### `CASSANDRA_RACK`

This variable sets the rack name of this node. It will set the [`rack`](http://docs.datastax.com/en/cassandra/2.1/cassandra/architecture/architectureSnitchGossipPF_c.html) option of `cassandra-rackdc.properties`.
This variable sets the rack name of this node. It will set the [`rack`](http://docs.datastax.com/en/cassandra/3.0/cassandra/architecture/archsnitchGossipPF.html) option of `cassandra-rackdc.properties`.

### `CASSANDRA_ENDPOINT_SNITCH`

This variable sets the snitch implementation this node will use. It will set the [`endpoint_snitch`](http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__endpoint_snitch) option of `cassandra.yml`.
This variable sets the snitch implementation this node will use. It will set the [`endpoint_snitch`](http://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html?scroll=configCassandra_yaml__endpoint_snitch) option of `cassandra.yml`.

# Caveats

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