Currently I am using elasticsearch 5.6.4 which has some production indices which is in one standalone instance.
And another standalone elasticsearch 6.3.2 with same production indices as well.
I want to shift indices from
5.6.4 to 6.4.1
6.3.2 to 6.4.1
Though there is not a lot of data in indices as it is in early stage of production.
Can some one suggest any good process to follow before migrating the indices and things to take care before and after migration.
Also will elastic dump be a good option in above case or there is version issues while using elastic dump??