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Understanding the basics of LVE Manager in WHM

Learn to navigate and use WHM's LVE Manager on CloudLinux cPanel servers to monitor real-time usage, adjust user resource limits, and view historical stats.
Control Panel cPanel WHM
6 min read

If your cPanel server is running CloudLinux, you have a powerful tool at your disposal called Lightweight Virtual Environment (LVE) Manager. LVE Manager allows you to control and monitor the server resources allocated to each hosting account. This helps ensure server stability and prevents any single user from monopolizing resources and affecting others. This guide will walk you through the basics of navigating and using LVE Manager in WHM.

Accessing LVE Manager

First, you’ll need to log in to your WHM (WebHost Manager) interface. Once logged in, you can find LVE Manager by following these steps:

  1. In the WHM search bar (usually on the left-hand side), type “CloudLinux LVE Manager”.
  2. Click on the CloudLinux LVE Manager link that appears under the “Server Configuration” or “Plugins” section.

This will take you to the LVE Manager dashboard, which provides an overview of your server’s resource usage and LVE status.

Navigating the LVE Manager interface

LVE Manager has several key tabs that help you manage and monitor resource usage. Here’s a brief overview of the most commonly used sections:

Dashboard

The Dashboard is the default landing page for LVE Manager. It provides a quick summary of the CloudLinux components and their status. You might see information here about the number of users hitting their resource limits within the last 24 hours.

Current usage

The Current Usage tab displays real-time information about the resources being consumed by individual LVEs (accounts). This is incredibly useful for identifying which accounts are actively using server resources at any given moment.

  • You’ll see columns for various metrics such as:
    • LVE ID: Often corresponds to the cPanel username.
    • SPEED: CPU usage (100% equals one CPU core in this case).
    • MEM: Memory (RAM) usage, usually shown in MB.
    • IO: Input/Output speed (disk read/write activity), often in KB/s or MB/s.
    • IOPS: Input/Output Operations Per Second.
    • nPROC: Number of processes running under the LVE.
    • EP: Entry Processes (e.g., web server processes spawned to handle requests).
  • The data in this section auto-refreshes, but you can typically adjust the refresh interval or pause it.
  • You can search for specific users by their username or LVE ID.

Users

The Users tab lists all cPanel users on the server and displays their current LVE resource limits. From here, you can:

  • View the limits set for each user (CPU, Memory, IO, IOPS, Entry Processes, Number of Processes).
  • Edit the limits for individual users. This allows you to customize resources for specific accounts that may require more or less than the default package limits.
  • Access historical usage statistics for a particular user by clicking the History button (or similar) next to their name.

When editing user limits, you’ll typically be able to set values for:

  • SPEED: CPU allocation. For example, 100% for one core, 200% for two cores, and so on.
  • PMEM (Physical Memory): The amount of RAM the user’s processes can consume.
  • IO: Maximum disk I/O throughput.
  • IOPS: Maximum number of read/write operations per second.
  • EP (Entry Processes): The maximum number of concurrent connections to web server scripts (e.g., PHP, Ruby). This is a common limit that, if hit, can result in 508 (Resource Limit Is Reached) errors.
  • NPROC (Number of Processes): The total number of processes a user can run simultaneously.

Statistics

The Statistics tab provides an aggregated view of LVE usage across the server. This section helps you understand overall resource consumption and identify top resource consumers. You might find charts or tables showing which users have the most faults or use the most CPU, memory, etc. This is useful for capacity planning and identifying consistently problematic accounts.

Packages

If you offer different hosting packages, the Packages tab is where you can define LVE limits on a per-package basis. When you create a new cPanel account and assign it to a package, it will automatically inherit the LVE limits defined here.

  • This is a more efficient way to manage limits for many users rather than setting them individually.
  • You can create new LVE settings for existing WHM packages or modify current ones.

Options

The Options or Settings tab allows you to configure various aspects of LVE Manager and CloudLinux behavior. Some common settings include:

  • Faults to include in notifications: Choose which resource limit faults trigger notifications.
  • User interface settings: Control what end-users can see in their cPanel interface regarding LVE usage. For example, you can choose to hide LVE usage statistics from cPanel users.
  • Default limits: Set server-wide default limits for new accounts that are not assigned to a specific package with pre-defined LVE limits.

Basic operations

Viewing current resource usage

To see who is using what right now:

  1. Navigate to CloudLinux LVE Manager.
  2. Click on the Current Usage tab.
  3. Observe the list of users and their respective resource consumption. You can sort by different columns to identify top consumers.

Adjusting limits for a single user

If a specific user requires different resource allocations:

  1. Go to CloudLinux LVE Manager.
  2. Click on the Users tab.
  3. Find the user in the list. You may need to use the search function.
  4. In the “Actions” column for that user, click the Edit icon (often a pencil symbol).
  5. Adjust the SPEED, PMEM, IO, IOPS, EP, and NPROC limits as needed. Be mindful not to overallocate resources beyond what your server can handle.
  6. Click Save Changes.

Example Limit Values (these are just examples, appropriate values depend on your server and user needs):

  • SPEED: 100% (1 CPU core)
  • PMEM: 1024MB (1GB RAM)
  • IO: 2048KB/s (2MB/s)
  • IOPS: 1024
  • EP: 20
  • NPROC: 100

Viewing user’s historical usage

To investigate past resource issues for a specific account:

  1. Navigate to CloudLinux LVE Manager.
  2. Click on the Users tab.
  3. Find the relevant user.
  4. Click the History icon (often a graph or clock symbol) in the “Actions” column for that user.
  5. Select the desired timeframe and examine the graphs for resource usage and faults. Faults (often marked with ‘F’ or highlighted) indicate instances where the account hit a specific limit.

Conclusion

LVE Manager is a critical tool for maintaining a stable and efficient shared hosting environment on servers running CloudLinux and cPanel. By understanding how to navigate its interface and utilize its basic features for monitoring and adjusting resource limits, you can proactively manage your server’s performance and ensure a better experience for all your users. Regularly check resource usage and adjust limits as necessary based on your users’ needs and your server’s capacity.

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