Cassandra2.2.10安装过程，

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