Cassandra2.2.10安装过程

1.

2.安装JVM

3.OS环境配置：

关闭防火墙：service iptables stop

vi /etc/sysctl.conf

vm.zone_reclaim_mode=0

vm.max_map_count = 262144

vm.swappiness = 1

vi /etc/security/limits.conf

* soft nofile 65536

* hard nofile 65536

* soft nproc 65536

* hard nproc 65536

vi /etc/hosts

192.168.99.6 JacK6

192.168.99.7 JacK7

192.168.99.8 JacK8

192.168.99.9 JacK9

4.添加用户：

useradd -d /data/hadoop -m hadoop

passwd hadoop

5.配置存储：挂在硬盘等

6.Cassandra的安装：

1.建立相关目录：

mkdir -p /data/hadoop/Cassandra_2.2.10

mkdir -p /data/tmp_data/cassan_data/commitlog

mkdir -p /data/tmp_data/cassan_data/saved_caches

mkdir -p /data/tmp_data/cassan_data/tables

2.上传压缩包，解压文件：

tar -xvf /data/tar/apache-cassandra-2.1.18-bin.tar.gz -C /data/hadoop/Cassandra_2.2.18/

cd /data/hadoop/Cassandra_2.2.18/apache-cassandra-2.1.18-bin

mv * ../

cd ..

rm -rf apache-cassandra-2.1.10-bin

3.修改配置文件：

1.修改cassandra.yaml

cd /data/hadoop/Cassandra_2.2.10/conf/

cp cassandra.yaml cassandra.yaml.bak

1.配置基本配置项

vi cassandra.yaml

cluster_name: 'Cluster_JacK'

data_file_directories:

- /data/tmp_data/cassan_data/tables

commitlog_directory: /data/tmp_data/cassan_data/commitlog

saved_caches_directory: /data/tmp_data/cassan_data/saved_caches

seeds: "192.168.99.6"（可以是自己也可以是集群中的任意节点）

listen_address: 192.168.99.6

rpc_address: 192.168.99.6

cp cassandra-env.sh cassandra-env.sh.bak

2.配置远程JMX访问（暂时不配）

vi cassandra-env.sh

if [ "x$LOCAL_JMX" = "x" ]; then

LOCAL_JMX=no

fi

cp/usr/java/jdk1.8.0_51/jre/lib/management/jmxremote.password.template   /etc/cassandra/jmxremote.password

chown cassandra.cassandra /etc/cassandra/jmxremote.password

chmod 400 /etc/cassandra/jmxremote.password

echo "cassandra cassandrapassword">>/etc/cassandra/jmxremote.password

sed -i '/controlRole/icassandra readwrite'/usr/java/jdk1.8.0_51/jre/lib/management/jmxremote.access

3.配置用户与权限（暂时不配）

修改cassandra.yaml中的以下两行

authenticator: PasswordAuthenticator

authorizer: CassandraAuthorizer

在cassandra启动后，在第一个seed节点执行以下命令：

echo "ALTER KEYSPACE system_auth WITHREPLICATION={'class':'org.apache.cassandra.locator.SimpleStrategy','replication_factor':'8'};"|cqlsh 10.202.20.191  -ucassandra -pcassandra

注：上面8为整个集群节点数，因为权限认证表需要全集群同步

echo "create user admin with password '123456'superuser;"|cqlsh 10.202.20.191 -ucassandra -pcassandra

echo "drop user cassandra;"|cqlsh 10.202.20.191  -uadmin -p123456

4.其他节点：修改相应的监听地址即可listen_address和rpc_address

 7.启动验证

cd /data/hadoop/Cassandra_2.2.10/bin

若在启动过程中报如下错误：listen地址设置成本机的IP地址或者防火墙未关闭

ERROR 03:09:13 Exception encountered during startup

java.lang.RuntimeException: Unable to gossip with any seeds

8.使用cqlsh报如下错误：

[hadoop@JacK7 bin]$ ./cqlsh

No appropriate python interpreter found.

仅支持python2.7,所以安装python2.7