can we safely upgrade a cassandra cluster with more memory and cpu? -


all of our cassandra nodes vms. if load data , begin using system, can add more cpus , memory vm @ later date? cassandra automatically handle that? there changes need make?

this version 2.0.5

assuming virtualization layer allows add cpus , memory, there should no problem.

you may need adjust java heap settings (see conf/cassandra-env.sh) allocate more memory cassandra, require rolling restart of each affected node (depending on virtualization layer, may need restart anyway add cpu/ram, , java requires restart detect additional cpus).

note best performance (and fault-tolerance) out of cassandra running on bare metal, not vms.

you may want consider upgrading cluster adding more nodes, rather increasing resources of each existing node - depends on use case.

see also:


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