# Starting & Stopping MongoDB instances

This page describes three ways to manage MongoDB instances using DMK.

***

#### Managing MongoDB instances with `dmk_db_ctl.py`

You can manage MongoDB instances using the control script provided by DMK:

```bash
$DMK_HOME/bin/dmk_db_ctl.py -i <instance_name> -a [start|stop|restart]
```

Replace `<instance_name>` with the actual name of your instance (e.g., `mdb01`).

***

#### Managing MongoDB instances with aliases (`mgstart`, `mgstop`, `mgrestart`)

If you have sourced your DMK environment, you can use the following aliases:

```bash
# Start the current instance
mgstart

# Stop the current instance
mgstop

# Restart the current instance
mgrestart
```

These aliases are just shortcuts to the `dmk_db_ctl.py` script.

***

#### Managing MongoDB instances with `systemd`

If your instance is configured with a `systemd` service, you can manage it using:

```bash
sudo systemctl [start|stop|restart|status] mongod_<instance_name>.service
```

Make sure the service name matches the instance name (e.g., `mongod_mdb01.service`).


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