Segmentation fault converting ReplicaSet to Replicated Shard Cluster

start 2 data node with: (config attached) $ mongod --config /data/mongod.conf --replSet rs start the arbiter with: $ mongod --config /data/arbitrer.conf --replSet rs connect to one data node and run the replicaset init > rs.initiate({ _id: "rs", members: [{ _id: 1, host: "mongo_replica1:27017" }, { _id: 2, host: "mongo_replica2:27017" }], settings: { getLastErrorDefaults: { w: "majority", wtimeout: 30000 }}}) connecting to replicaset "rs/mongo_replica1:27017,mongo_replica2:27017" to add arbitrer > rs.addArb("mongo_arbitrer:27017") now following https://docs.mongodb.com/manual/tutorial/convert-replica-set-to-replicated-shard-cluster/#restart-the-replica-set-as-a-shard stop secondary and run $ mongod --config /data/mongod.conf --shardsvr --replSet rs stop arbitrer and run $ mongod --config /data/arbitrer.conf --shardsvr --replSet rs connect to primary and stepDown > rs.stepDown() restart old Primary with $ mongod --config /data/mongod.conf --shardsvr --replSet rs everything reconnect. After some minutes (around 5. it's cyclic) in idle one data node receive SIGSEGV and on cascade also the other data node (but not the arbitrer) receive the same SIGSEGV.