Learn to troubleshoot MongoDB (troubleshoot Replica sets) clusters

Test Connections between all members (cluster node network test)

When a MongoDB cluster is in progress, each node's network needs to interact, assuming there are 3 server nodes.

M1.example.net

M2.example.net

M3.example.net

Connections from M1.example.net 2 and 3:

MONGO--host m2.example.net--port 27017mongo--host m3.example.net--port 27017

Connections from M2.example.net 1 and 3:

MONGO--host m1.example.net--port 27017mongo--host m3.example.net--port 27017

Connections from M3.example.net 1 and 2:

MONGO--host m1.example.net--port 27017mongo--host m2.example.net--port 27017

If there is an error in any one link, check the network configuration and firewall to ensure that all nodes interact.

Learn to troubleshoot MongoDB (troubleshoot Replica sets) clusters