Cassandra（一）之linux中的下载和安装

Cassandra（一）之linux中的下载和安装

1、新建cassandra.repo文件

touch /etc/yum.repos.d/cassandra.repo

2、配置cassandra.repo

vi /etc/yum.repos.d/cassandra.repo

[cassandra]
name=Apache Cassandra
baseurl=https://www.apache.org/dist/cassandra/redhat/311x/
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://www.apache.org/dist/cassandra/KEYS

3、安装

sudo yum install cassandra

4、启动Cassandra

service cassandra start

5、设置随机启动Cassandra服务

chkconfig cassandra on # make Cassandra start automatically after reboot

6、进入Cassandra交互界面

cqlsh

[root@sandbox-hdp ~]# cqlsh
Connected to Test Cluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 3.11.6 | CQL spec 3.4.4 | Native protocol v4]
Use HELP for help.
cqlsh> 

坑点：

1、系统中需安装Python2.7，下载、安装并启动Cassandra才会正常，否则可能会遇到问题。

如安装不了、登录失败等等

# 登录失败
[root@sandbox-hdp ~]# cqlsh
Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})