[SERVER-4183] Command to test network connectivity to all hosts Created: 31/Oct/11  Updated: 12/Dec/23

Status: Backlog
Project: Core Server
Component/s: Admin
Affects Version/s: None
Fix Version/s: None

Type: New Feature Priority: Major - P3
Reporter: Mathias Stearn Assignee: Backlog - Cluster Scalability
Resolution: Unresolved Votes: 0
Labels: RachitaD
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Cluster Scalability
Participants:

 Description   

We've seen many client networking issues that would be much easier to debug if there was an easy way to test connectivity between all nodes. Common examples of failure conditions include over-restrictive firewalls and misconfigured DNS or /etc/hosts.conf.

It would be nice to be able to run a command on mongos that will gather up all "important" hosts in the cluster (all config servers, all non-hidden members of all shards), then have everyone test connecting to everyone else. The output would be an N*N matrix that will show any potential networking issues. Ideally this could use the _isSelf command or something similar to make sure that everyone agrees about which server "host1234" is.


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