# NFS Service Setup Guide

This document outlines the steps taken to set up the NFS (Network File System) service on this machine, with a custom configuration file location.

## Setup Steps

1.  **Install NFS Server Package**
    The `nfs-kernel-server` package was installed using `apt-get`:
    ```bash
    sudo apt-get install -y nfs-kernel-server
    ```

2.  **Create Custom Configuration Directory**
    A dedicated directory for NFS configuration files was created at `/opt/calypso/conf/nfs/`:
    ```bash
    sudo mkdir -p /opt/calypso/conf/nfs/
    ```

3.  **Handle Default `/etc/exports` File**
    The default `/etc/exports` file, which typically contains commented-out examples, was removed to prepare for the custom configuration:
    ```bash
    sudo rm /etc/exports
    ```

4.  **Create Custom `exports` Configuration File**
    A new `exports` file was created in the custom directory `/opt/calypso/conf/nfs/exports`. This file will be used to define NFS shares. Initially, it contains a placeholder comment:
    ```bash
    sudo echo "# NFS exports managed by Calypso
# Add your NFS exports below. For example:
# /path/to/share  *(rw,sync,no_subtree_check)" > /opt/calypso/conf/nfs/exports
    ```
    **Note:** You should edit this file (`/opt/calypso/conf/nfs/exports`) to define your actual NFS shares.

5.  **Create Symbolic Link for `/etc/exports`**
    A symbolic link was created from the standard `/etc/exports` path to the custom configuration file. This ensures that the NFS service looks for its configuration in the designated `/opt/calypso/conf/nfs/exports` location:
    ```bash
    sudo ln -s /opt/calypso/conf/nfs/exports /etc/exports
    ```

6.  **Start NFS Kernel Server Service**
    The NFS kernel server service was started:
    ```bash
    sudo systemctl start nfs-kernel-server
    ```

7.  **Enable NFS Kernel Server on Boot**
    The NFS service was enabled to start automatically every time the system boots:
    ```bash
    sudo systemctl enable nfs-kernel-server
    ```

## How to Configure NFS Shares

To define your NFS shares, edit the file `/opt/calypso/conf/nfs/exports`. After making changes to this file, you must reload the NFS exports using the command:

```bash
sudo exportfs -ra
```

This ensures that the NFS server recognizes your new or modified shares without requiring a full service restart.