修改多数据中心配置
1、修改/conf/cassandra-rackdc.properties
dc=sz
2、修改/conf/jvm.options增加如下配置
-Dcassandra.ignore_dc=true
3、修改表空间
ALTER KEYSPACE mytestdb WITH replication = {'class':'NetworkTopologyStrategy','sz':2};
ALTER KEYSPACE system_auth WITH replication = {'class':'NetworkTopologyStrategy','sz':3};
4、集群实例一台台重启、完成一台再启下一台
5、nodetool repair system_auth