CentOS7 从零搭建 Cassandra3.7集群

来源：互联网发布：淘宝营类目怎么修改编辑：程序博客网时间：2024/04/30 08:02

序言
配置基础环境
配置Cassandra
调试

序言

官网下载 Cassandra3.7, OpenJDK1.8
将软件包拷贝至目录： /usr/local
准备三台CentOS7机器：192.16.169.130(seed), 192.16.169.136(seed), 192.16.169.137

配置基础环境

设置零食变量方便部署

jdkFolder='/usr/local/jdk1.8'cassRepo='/home/cassandra/repository'currIp=192.168.169.137 #不同机器设置不同

添加用户以及用户组

groupadd cassandrauseradd -d /home/cassandra  -g cassandra cassandra

安装JAVA

#install jdktar -zxvf  /usr/local/jdk-8u101-linux-x64.tar.gzmv jdk1.8.0_101 ${jdkFolder}#configurate environmentecho export JAVA_HOME=${jdkFolder} >> /etc/profileecho 'export JRE_HOME=$JAVA_HOME/jre' >> /etc/profileecho 'export PATH=$PATH:$JAVA_HOME/bin' >> /etc/profileecho 'export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar' >> /etc/profile

4 关闭防火墙

```#close firewallsystemctl stop firewalld.servicesystemctl disable firewalld.service```

5. 针对Cassandra，优化机器

```#systcl.confecho 'vm.zone_reclaim_mode=0' >> /etc/sysctl.confecho 'vm.max_map_count=262144' >> /etc/sysctl.confecho 'vm.swappiness=1' >> etc/sysctl.confsysctl -p#PAM limits.confecho '* soft nofile 65536' >> /etc/security/limits.confecho '* hard nofile 65536' >> /etc/security/limits.confecho '* soft nproc  65536' >> /etc/security/limits.confecho '* hard nproc  65536' >> /etc/security/limits.conf```

配置Cassandra

安装Cassandra

cassDir='/home/cassandra/cassandra3.7'tar -zxvf apache-cassandra-3.7-bin.tar.gzmv apache-cassandra-3.7 $cassDirchown -R cassandra:cassandra $cassDirecho 'export PATH=$PATH:/home/cassandra/cassandra3.7/bin' >> /etc/profileecho export CASSANDRA_HOME=$cassDir >> /etc/profilesource /etc/profile

创建目录

mkdir $cassRepomkdir $cassRepo/datamkdir $cassRepo/commitlogmkdir $cassRepo/saved_cachechmod -R 777 $cassRepochown -R cassandra:cassandra $cassRepo

配置

cp /home/cassandra/cassandra3.7/conf/cassandra.yaml  $CASSANDRA_HOME/conf/cassandra.yaml.bak #备份配置文件sed -i "s/^cluster_name:[^aa]*$/cluster_name: 'HZ Test'/" $CASSANDRA_HOME/conf/cassandra.yamlsed -i 's/- seeds: "127.0.0.1"/- seeds: "192.168.169.130,192.168.169.136"/' $CASSANDRA_HOME/conf/cassandra.yaml #注意地址列表sed -i "s/^listen_address: localhost$/listen_address: $currIp/" $CASSANDRA_HOME/conf/cassandra.yamlsed -i "s/^rpc_address: localhost$/rpc_address: $currIp/" $CASSANDRA_HOME/conf/cassandra.yamlecho data_file_directories:>> $CASSANDRA_HOME/conf/cassandra.yamlecho "    - $cassRepo/data" >> $CASSANDRA_HOME/conf/cassandra.yamlecho commitlog_directory: $cassRepo/commitlog  >> $CASSANDRA_HOME/conf/cassandra.yamlecho saved_caches_directory: $cassRepo/saved_cache>> $CASSANDRA_HOME/conf/cassandra.yaml

调试

从Seed 节点依次启动机器
```
su cassandracassandra -f
```
查看节点状态
```
nodetool status
```
测试CQL
```
cqlsh 192.168.169.130
```

引用
http://blog.csdn.net/chenxingzhen001/article/details/8729623

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