High disk usage on node

Travis Kirstine tkirstine at firstbasesolutions.com
Thu Nov 1 09:25:15 EDT 2018


I'm running riak (v2.14) in a 5 node cluster and for some reason one of the nodes has higher disk usage than the other nodes.  The problem seems to be related to how riak distributes the partitions, in my case I'm using the default 64, riak has given each node 12 partition except one node that gets 16 (4x12+16=64).  As a result the node with 16 partitions has filled the disk and become 'un-reachable'.

I have a node on standby with roughly the same disk space as the failed node, my concern is that if a add it to the cluster it will overflow as well.

How do I recover the failed node and add a new node without destroying the cluster..... BTW just to make things more fun the new node is at a newer version of riak so I need to perform a rolling upgrade at the same time.

Any help would be greatly appreciated!
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