How to know which storage engine is used in mongodb?

Question

Starting from version 3.0, mongodb support pluggable storage engine. How to know which storage engine is being used in a system?

Tubercular

Answer 1

Easiest way to find the storage engine being used currently in from mongo console.

Inside mongo console, type (You might need admin access to run this command)

db.serverStatus().storageEngine

If It returns,

{ "name" : "wiredTiger" }

WireTiger Storage engine is being used.

Once it is confirmed that wiredTiger is being used then type

db.serverStatus().wiredTiger

to get all the configuration details of wiredTiger.

Tubercular

He is the most mysterious user which I've ever seen on stackoverflow. He looks like a scholar of MongoDB. There are a lot of answer belongs to him on stackoverflow. Also his reputation seems just 1 and account is ` temporarily suspended` every time. – Faso

Answer 2

On the console, Mayank's answer makes more sense.
On the other hand, by using MongoDB GUI like MongoChef or Robomongo storageEngine may be found by using the ways below;

On Robomongo;

---

On MongoChef;

Faso

do you know how to change the storage engine to wiredtigeR? – Gunplay

Yep. I've changed my storage engine by re-installing MongoDB. Check this question and answers; dba.stackexchange.com/a/104583/61836 – Faso

Answer 3

You can detect this via:

db.serverStatus().wiredTiger 

So at "present" where this "exists" then there is a different storage engine configured other than the default "MMAPv1" where "WiredTiger" is not used.

This applies to the present "MongoDB 3.0x" series

Karate