cassandra分布式安装

1.下载 cassandra 建议安装镜像文件

wget http://mirror.bit.edu.cn/apache/cassandra/2.2.3/apache-cassandra-2.2.3-bin.tar.gz;

2.解压文件

tar -zxvf apache-cassandra-2.2.3-bin.tar.gz

3. 修改配置文件 cassandra安装路径下 /conf/cassandra.yaml

配置项如下：

1> cluster_name: '集群名称Cluster'

2> data_file_directories:

- /path/cassandra/data ---数据文件存储位置

3> commitlog_directory: /path/cassandra/commitlog -- commitlog文件存储位置

4> saved_caches_directory: /path/cassandra/saved_caches ---saved_caches 存储位置

5> seed_provider:

# 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. You must change this if you are running

# multiple nodes!

- class_name: org.apache.cassandra.locator.SimpleSeedProvider

parameters:

# seeds is actually a comma-delimited list of addresses.

# Ex: "<ip1>,<ip2>,<ip3>"

- seeds: "192.168.1.10" ---配置集群的masterIP，可以设置多个

6>listen_address: 192.168.1.10 ---配置当前机器的IP，如果是 slave机器就配置slave机器IP，matser就配置 matserIP

4.拷贝配置好的包分别到机器的机器里面

在分布式中分别在安装包的 bin目录下启动

./cassandra -f &

如果要执行 cql 功能，类似 sql

./cqlsh Ip(分布式需要IP，其他的不需要)

cql操作的基本语法

创建 keysapce

CREATE KEYSPACE Excelsior
           WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};

CREATE KEYSPACE Excalibur
           WITH replication = {'class': 'NetworkTopologyStrategy', 'DC1' : 1, 'DC2' : 3}
            AND durable_writes = false;

删除 keyspace

DROP KEYSPACE myApp;

创建表

CREATE TABLE

Excelsior.

test(

    pk  int,

    t text,

    v text,

    s text

    PRIMARY KEY (pk)

创建索引

create index test (t);

删除索引

DROP INDEX userIndex;

DROP INDEX userkeyspace.address_index;

新增数据

INSERT INTO test(pk, t, v, s) VALUES (0, 0, 'val0', 'static0');

具体的操作请网上搜索

cassandra分布式安装

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