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# How to Fix AlmaLinux 8 DNF Perl Module Conflicts on cPanel Servers
- URL: https://www.blog.nestict.com/how-to-fix-almalinux-8-dnf-perl-module-conflicts-on-cpanel-servers/
- Published: 2026-09-21T23:09:36.000Z
- Updated: 2026-09-21T23:09:36.000Z
- Author: Nestict Infotech CSR
- Tags: cpanel, Featured, VPS server setup

**Troubleshooting Guide: Perl 5.26, Net-SNMP, EA-PHP SNMP and AppStream Modular Filtering**

Updating an AlmaLinux 8 server can occasionally produce a confusing series of dependency errors involving Perl, `net-snmp`, PHP SNMP extensions and AppStream module streams.

A typical example is:

```text
cannot install both perl-libs-4:5.32.1-473...
and perl-libs-4:5.26.3-423.el8_10.1...
```

followed by errors such as:

```text
net-snmp requires libperl.so.5.26
```

and:

```text
package ea-php83-php-snmp ... requires net-snmp,
but none of the providers can be installed
```

This guide explains how to diagnose the problem safely on an **AlmaLinux 8/cPanel server** without unnecessarily removing Perl, Net-SNMP or cPanel's EasyApache packages.

## 1\. Understanding the Problem

The apparent problem may look like a PHP problem because the transaction reports packages such as:

```text
ea-php82-php-snmp
ea-php83-php-snmp
```

However, these packages are usually only **downstream victims** of the dependency conflict.

The dependency chain is approximately:

```text
EA-PHP SNMP
     │
     ▼
  net-snmp
     │
     ▼
libperl.so.5.26
     │
     ▼
 Perl 5.26
```

The important requirement is:

```text
net-snmp requires libperl.so.5.26()(64bit)
```

Therefore, replacing the system Perl 5.26 packages with Perl 5.32 is not an appropriate first response.

## 2\. The Critical Error

The most important part of the DNF transaction is usually similar to:

```text
cannot install both perl-libs-4:5.32.1-473...
from appstream

and

perl-libs-4:5.26.3-423.el8_10.1...
from @System
```

The system may also report:

```text
package perl-libs-4:5.26.3-423.el8_10.1
from baseos is filtered out by modular filtering
```

This indicates that DNF is attempting to resolve packages across incompatible Perl module streams.

For example, AlmaLinux 8 AppStream can expose:

```text
perl 5.24
perl 5.26
perl 5.30
perl 5.32
```

But a server does not normally use all of these simultaneously.

On the affected server, the correct enabled stream was:

```text
perl 5.26 [d][e]
```

where:

- `[d]` \= default
- `[e]` \= enabled

# 3\. Do Not Immediately Remove Perl

One of the biggest mistakes when encountering this problem is attempting to solve it by removing Perl or changing the Perl stream blindly.

For example, avoid immediately running:

```bash
dnf remove perl
```

or:

```bash
dnf module enable perl:5.32
```

Also avoid blindly using:

```bash
dnf update --allowerasing
```

The reason is that other system packages can depend on the Perl ABI currently installed.

In the affected system, `net-snmp` specifically required:

```text
libperl.so.5.26
```

Changing the system Perl stream could therefore create additional dependency problems.

# 4\. Check the Installed Perl Packages

Start by checking the actual packages installed on the server:

```bash
rpm -q perl perl-libs net-snmp
```

A healthy result for the affected system was:

```text
perl-5.26.3-423.el8_10.1.x86_64
perl-libs-5.26.3-423.el8_10.1.x86_64
net-snmp-5.8-33.el8_10.x86_64
```

This immediately tells you that the server is using the Perl 5.26 ABI required by `net-snmp`.

# 5\. Check the Perl Module Stream

Next run:

```bash
dnf module list perl
```

The relevant section should look similar to:

```text
Name  Stream       Profiles                    Summary
perl  5.24         common [d], minimal         Practical Extraction...
perl  5.26 [d][e]  common [d], minimal         Practical Extraction...
perl  5.30         common [d], minimal         Practical Extraction...
perl  5.32         common [d], minimal         Practical Extraction...
```

The important indicator is:

```text
5.26 [d][e]
```

This means Perl 5.26 is both the default and enabled stream.

If the installed system Perl is 5.26.3 and `net-snmp` requires `libperl.so.5.26`, this is the stream you generally want to preserve.

# 6\. Refresh DNF Metadata

Before making destructive package changes, refresh the DNF metadata:

```bash
dnf makecache
```

This is particularly important when the repository metadata or module metadata is temporarily inconsistent.

In the affected case, refreshing the metadata was sufficient to restore correct dependency resolution.

After the cache refresh, run:

```bash
dnf update --assumeno
```

The `--assumeno` option is useful because it resolves the transaction without actually applying it.

A clean result is:

```text
Dependencies resolved.
Nothing to do.
Complete!
```

This means DNF no longer has a pending transaction requiring package changes.

# 7\. Run a Dependency Check

Once DNF resolves correctly, run:

```bash
dnf check
```

A healthy result should indicate that there are no dependency problems.

This is preferable to forcing package replacements simply because the original update command produced a large dependency error.

# 8\. Why EA-PHP SNMP Appears in the Error

cPanel's EasyApache packages may contain SNMP support such as:

```text
ea-php82-php-snmp
ea-php83-php-snmp
```

These packages depend on:

```text
net-snmp
```

The dependency relationship looks like this:

```text
ea-php82-php-snmp
        │
        ▼
     net-snmp
        │
        ▼
 libperl.so.5.26
        │
        ▼
 perl-libs 5.26.3
```

Therefore, an error involving:

```text
ea-php82-php-snmp
```

does not necessarily mean the EasyApache PHP installation is broken.

The underlying issue can be the Perl module stream.

# 9\. Understanding "Modular Filtering"

The phrase:

```text
filtered out by modular filtering
```

is important.

AlmaLinux 8 uses modular repositories for some packages. A package can exist in the repository but still be unavailable to DNF because the currently selected module stream filters it out.

For example, DNF may see:

```text
perl-libs 5.26
```

in BaseOS while simultaneously trying to resolve:

```text
perl-libs 5.32
```

from AppStream.

If the active module metadata does not permit the required package combination, DNF can report:

```text
package ... is filtered out by modular filtering
```

This does not necessarily mean that the package is missing from the repository.

# 10\. Safe Troubleshooting Workflow

For an AlmaLinux 8 cPanel server, a conservative troubleshooting sequence is:

### Step 1 — Check installed packages

```bash
rpm -q perl perl-libs net-snmp
```

### Step 2 — Check the Perl module

```bash
dnf module list perl
```

### Step 3 — Refresh metadata

```bash
dnf makecache
```

### Step 4 — Test dependency resolution

```bash
dnf update --assumeno
```

### Step 5 — Check installed dependencies

```bash
dnf check
```

Only after these checks should you consider changing module streams or replacing packages.

# 11\. What Not to Do

Avoid blindly executing commands such as:

```bash
dnf remove perl
```

```bash
dnf module enable perl:5.32
```

```bash
dnf update --allowerasing
```

```bash
dnf update --skip-broken
```

or:

```bash
dnf module reset perl
```

simply because DNF suggested them.

These options can be useful in specific situations, but they should not be the first response when the installed system Perl and its dependent packages are already consistent.

# 12\. When `dnf makecache` Is Enough

Sometimes the apparent dependency conflict is caused by stale or inconsistent repository/module metadata.

In that situation:

```bash
dnf makecache
```

followed by:

```bash
dnf update --assumeno
```

can be enough.

For example, the affected server eventually reported:

```text
Dependencies resolved.
Nothing to do.
Complete!
```

This confirmed that there was no longer a pending dependency transaction.

# 13\. Recommended Verification Commands

After resolving the issue, run:

```bash
rpm -q perl perl-libs net-snmp
```

Then:

```bash
dnf module list perl
```

Then:

```bash
dnf check
```

Finally:

```bash
dnf update --assumeno
```

The combination gives you four useful pieces of information:

| Check                          | Purpose                                 |
| ------------------------------ | --------------------------------------- |
| rpm -q perl perl-libs net-snmp | Confirms installed versions             |
| dnf module list perl           | Shows active Perl streams               |
| dnf check                      | Checks installed package dependencies   |
| dnf update --assumeno          | Tests whether DNF can resolve an update |

# 14\. Example of a Healthy Final State

A healthy system in this scenario can look like:

```text
perl-5.26.3-423.el8_10.1.x86_64
perl-libs-5.26.3-423.el8_10.1.x86_64
net-snmp-5.8-33.el8_10.x86_64
```

with:

```text
perl 5.26 [d][e]
```

and:

```text
Dependencies resolved.
Nothing to do.
Complete!
```

That means there is no reason to force an update or replace the Perl packages.

# 15\. Key Lesson

The most important lesson is to identify the **root dependency** instead of focusing on the last package mentioned in the error.

For example:

```text
ea-php83-php-snmp
       ↓
    net-snmp
       ↓
 libperl.so.5.26
       ↓
 Perl 5.26
```

The PHP SNMP package is therefore not necessarily the problem.

Likewise, seeing Perl 5.32 packages in AppStream does not mean that the server should be migrated to Perl 5.32.

On an AlmaLinux 8 cPanel system where installed packages depend on Perl 5.26, the first objective should be to preserve the compatible Perl 5.26 environment and restore correct DNF metadata/module resolution.

## Quick Recovery Checklist

Use this checklist before making any major package changes:

```bash
# 1. Check Perl and Net-SNMP
rpm -q perl perl-libs net-snmp

# 2. Check Perl module streams
dnf module list perl

# 3. Refresh repository metadata
dnf makecache

# 4. Test update resolution without changing anything
dnf update --assumeno

# 5. Check installed dependencies
dnf check
```

If the final commands report:

```text
Dependencies resolved.
Nothing to do.
Complete!
```

then **stop there**. There is no need to force package removal or replacement.

Perl dependency errors on AlmaLinux 8 can look much more serious than they actually are, particularly on cPanel servers where EasyApache PHP packages depend on system components such as `net-snmp`.

The safest troubleshooting approach is:

**identify the installed Perl ABI → check the active module stream → refresh DNF metadata → test dependency resolution → only then consider package changes.**