I have moved some data from an old Ubuntu server to a new one, I used Rsync to copy a lot of stuff that working correctly like Mysql data and Apache config file.
However, Mongo not, the old server use Mongo V2.6 and the new one use Mongo V4.4, when use mongorestore, there has no error but said no indexed restore.
I have reindex it by command
reindex , and I can see the index by command
getIndex , but, if I use
show dbs , these still are 0.000GB, the old server is 0.078GB, and the new server missed a table (index maybe?)
So the website can not log in, I guess the reason is MongoDB.
I know system.indexes have moved at mongov4.2, but I don’t know how to do it now.