Windows环境MongoDB副本集配置报错：未启用replSet选项求助

Hey there! Let's get your MongoDB replica set up and running smoothly. The error you're seeing (NoReplicationEnabled) happens because none of your MongoDB instances were started with the required replica set configuration. Here's how to fix this step by step:

1. Create Separate Configuration Files for Each Replica Node #

Since you've already created C:/data/rs1, rs2, rs3, each node needs its own config file with unique paths, ports, and the critical replSetName setting.

Example Config for Node 1 (rs1, port 27017) #

Save this as mongod-rs1.conf:

# mongod-rs1.conf
systemLog:
  destination: file
  path: c:\data\rs1\mongod.log  # Log file stored in rs1 folder
storage:
  dbPath: c:\data\rs1  # Uses your pre-created rs1 directory
net:
  port: 27017
replication:
  replSetName: "test"  # Must match the _id in your replica set config!

Config for Node 2 (rs2, port 27018) #

Save as mongod-rs2.conf:

# mongod-rs2.conf
systemLog:
  destination: file
  path: c:\data\rs2\mongod.log
storage:
  dbPath: c:\data\rs2
net:
  port: 27018
replication:
  replSetName: "test"

Config for Node 3 (rs3, port 27019) #

Save as mongod-rs3.conf:

# mongod-rs3.conf
systemLog:
  destination: file
  path: c:\data\rs3\mongod.log
storage:
  dbPath: c:\data\rs3
net:
  port: 27019
replication:
  replSetName: "test"

2. Start All Three Replica Instances #

Forget the net start Mongodb command for now—we need to launch each node separately with its own config. Open three separate Command Prompt windows and run these commands one per window:

• Window 1 (Node 1):

  mongod --config "C:\path\to\mongod-rs1.conf"
  

• Window 2 (Node 2):

  mongod --config "C:\path\to\mongod-rs2.conf"
  

• Window 3 (Node 3):

  mongod --config "C:\path\to\mongod-rs3.conf"
  

Make sure to replace C:\path\to\ with the actual folder where you saved your config files.

Wait until each instance shows a line like [listener] waiting for connections on port XXXX—that means it's ready.

3. Re-Initialize the Replica Set #

Now connect to your first node (port 27017) in a new Command Prompt window:

mongo --port 27017

Then run your replica set config and initiate it (just like you tried before, but now all nodes have replSetName set):

config = {_id: "test", members: [ 
  {_id: 0, host: "127.0.0.1:27017"}, 
  {_id: 1, host: "127.0.0.1:27018"}, 
  {_id: 2, host: "127.0.0.1:27019"} 
]}
rs.initiate(config)

This should return { "ok" : 1 } if successful. You can check the status with:

rs.status()

You'll see all three nodes listed, with one as the primary and the others as secondaries.

Bonus: Set Up Windows Services for Auto-Start #

If you want these replica nodes to start automatically when your PC boots, you can create Windows Services for each. For example, for Node 1:

sc create MongoDB-RS1 binPath= "\"C:\Program Files\MongoDB\Server\X.X\bin\mongod.exe\" --config \"C:\path\to\mongod-rs1.conf\"" DisplayName= "MongoDB Replica Set Node 1" start= "auto"

• Replace X.X with your MongoDB version (like 6.0)
• Update the config file path to match your setup
• Repeat this for nodes 2 and 3, changing the service name (MongoDB-RS2, MongoDB-RS3) and config path accordingly

内容的提问来源于stack exchange，提问作者Ankit