Datastax keyspace topology Change Issue -


i planning change keyspace strategy simplestrategy networktopologystrategy making network aware. had changed keyspace strategy of app1,app2 , app3 had created. need change keyspace strategy of below mentioned key space network aware ?.

dse_leases, dse_system, system_schema, dse_security, system_auth, system_distributed, system, system_traces, solr_admin, dse_perf

updated : fount don't have change strategy of keyspace system , system_schema because not user modifiable.did other keyspace mentioned above need change

system , system_schema :

don't have change strategy of keyspace system , system_schema because not user modifiable

dse_leases :

1) replication factor of 1 suitable development , testing on       single node only, never in production environment. 2) production clusters, increase replication factor @ least 3     each logical datacenter running analytics.

dse_system :

dse uses default replication strategy of "everywherestrategy"  dse_system keyspace.the best approach keep dse node in   cluster , alter replication strategy dse_system   keyspace 1 understood nodes    (a) alter keyspace dse_system replication = {'class': 'networktopologystrategy', 'dc1':1 ,'dc2':1};

dse_perf :

datastax enterprise uses dse_perf keyspace storing performance   metrics data.by default datastax enterprise writes performance  metrics   data consistency level 1 , writes performed asynchronously.  set replication factor based depending on environment:  (a) alter keyspace "dse_perf" replication = {'class' : 'networktopologystrategy', 'dc1' : 3, 'dc2' : 2};

system_auth , dse_security :

cassandra uses system_auth , dse_security keyspaces storing   security authentication , authorization  information. datastax   enterprise uses system_auth keyspace when enable kind of   authentication. datastax enterprise uses dse_security keyspace on  analytics nodes (cfs, hadoop, spark) when enable kerberos   authentication     (a)alter keyspace "system_auth" replication = {'class' : 'networktopologystrategy', 'dc1' : 3, 'dc2' : 2};   (b)alter keyspace "dse_security" replication = {'class' : 'networktopologystrategy', 'dc1' : 3, 'dc2' : 2};

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