Error upon adding a new node. "NotWritablePrimary: Not-primary error while processing 'find'"

Question

I have 2 node replica-set

Vm1 - Primary 10.1.0.2 Priority = 2

Vm2 - Secondary 10.1.0.3 Priority = 1

Now I am trying to add a new node (Vm3 10.1.0.4 - Secondary Priority = 0) based on Data folder from Secondary. (I stopped the mongod on secondary, then create a snapshot)

Now when I add the Vm3 on my replica set when I check the mongod.log here is the error:

{"t":{"$date":"2022-06-06T22:05:13.172+08:00"},"s":"I", "c":"NETWORK", "id":22990, "ctx":"conn268","msg":"DBException handling request, closing client connection","attr":{"error":"NotWritablePrimary: Not-primary error while processing 'find' operation on 'investastock_ta' database via fire-and-forget command execution."}}

There is also an error that the node is too stale to use candidate as a sync source

Answer 1

Already fixed. The copy should be from the PRIMARY and not from a SECONDARY node. No downtime needed in my end even if the PRIMARY node is running when I took a snapshot. Running on MongoDB 4.4