# multi-server-user-manager

**Automate user creation and removal across multiple Linux servers from a single script.**

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## Overview

`set_local_user.sh` is a Bash automation tool for centralized user management on multiple Linux servers.   
It streamlines user creation, account removal, and home directory setup—ensuring consistent environments across your infrastructure.

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## Features

- Create new users on all servers from a single command.
- Remove users from all servers and the tracking file (without deleting their data).
- Automatically create and permission user home/work directories on network storage.
- Distribute SSH keys and aliases to network home directories.
- Interactive and safe: all actions are performed via clear, step-by-step prompts.

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## Usage

### 1. Ensure Prerequisites

- Run the script as **root**.
- Ensure SSH key access to all target servers.
- Update file paths for server/user lists and NFS/project directories if needed.

### 2. Run the Script

```sh
bash set_local_user.sh

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3. Interactive Prompts

You will be guided step-by-step via the following prompts and instructions:

Main Menu

Welcome! Please choose an action from the list: 
1 - Create new user on Zebu
2 - Delete entry only of leaving user (Without DATA)
:

If you select 1 (Create a New User):

• Prompt:

  Enter username to add:
  

• If the username is empty:

  Username cannot be empty.
  

• If the user already exists in the tracking file:

  User <username> already exists in the users list.
  

• If the user is new:

  User <username> added to the users list.
  

• For each server in your server list:

  Connecting to <server>...
  

  • If the user does not exist on the server:

    User <Full Name> created successfully on <server>.
    User creation on <server> successful.
    

  • If the user already exists on the server:

    User <username> already exists on <server>. No action taken.
    

• When copying SSH keys and aliases:

  Copying SSH keys and .tcshrc.* and Alias files
  

• After updating ownerships:

  Updating user ownership on directory /net/<IP-Address>/vol_home_01/
  

• After creating the work directory:

  Work directory at /projects/<>/work/ for User '<Full Name>' created successfully
  

• After creating the home directory:

  Home directory at /projects/<>/home/ for User '<Full Name>' created successfully
  

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If you select 2 (Remove a User Entry):

• Prompt:

  Enter username to remove:
  

• If the username is empty:

  Username cannot be empty.
  

• If the user is found in the tracking file:

  User <username> removed from the users list.
  

• If the user is not found:

  User <username> not found in the users list.
  

• For each server in your server list:

  Connecting to <server>...
  

  • If the user does not exist on the server:

    User <username> does not exist on <server>. Skipping deletion.
    

  • If the user is deleted successfully:

    User <Full Name> deleted successfully on <server>.
    User <Full Name> deleted on <server> successfully.
    

  • If deletion fails:

    Failed to delete <Full Name> user on <server>.
    

• When checking for empty directories:

  Checking if empty directory exists at /projects/<>/
  

  • If the work directory was deleted:

    User '<Full Name>' had an empty work directory at /projects/<>/work/<username> ; Deleted successfully.
    

  • If the home directory was deleted:

    User '<Full Name>' had an empty home directory at /projects/<>/home/<username> ; Deleted successfully.
    

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Full Example Session

Welcome! Please choose an action from the list: 
1 - Create new user on Zebu
2 - Delete entry only of leaving user (Without DATA)
: 1
Enter username to add: johndoe
User johndoe added to the users list.
Connecting to server1...
User John Doe created successfully on server1.
User creation on server1 successful.
Copying SSH keys and .tcshrc.* and Alias files
Updating user ownership on directory /net/<IP-Address>/vol_home_01/
Work directory at /projects/<>/work/ for User 'John Doe' created successfully
Home directory at /projects/<>/home/ for User 'John Doe' created successfully

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Requirements

• Bash
• SSH access to all managed servers
• Root privileges
• Server list file (default: /tools/IT/script/server_list.txt)
• User list file (default: /tools/IT/.users_list)

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Disclaimer

Warning: This script modifies user accounts and system files on multiple servers. Run only if you understand the implications. Use at your own risk; no warranty or liability is provided.

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License

This project is distributed under the MIT License. See LICENSE for more information.

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Let me know if you want this as a downloadable file or if you want even more details or troubleshooting tips!