Bug in pandora_agentsunixpandora_agent_installer detecting perl version

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Bug in pandora_agentsunixpandora_agent_installer detecting perl version

Posted by JonRussell on October 28, 2025 at 21:49
Hi,

There is a bug in pandora_agent_installer where it incorrectly identifies the latest version of Perl v5.40.1 as earlier than v5.6.x
```
./pandora_agent_installer --install --no-tentacle-server 
Perl 5.6.x or higher is not detected. 
This is required for Pandora FMS 
Detected: 
Aborting install...
```
When I check my version of Perl I get:
```
perl --version 
This is perl 5, version 40, subversion 1 (v5.40.1) built for aarch64-linux-gnu-thread-multi 
```
The bug is in this line:
```
# Check for Perl 5.6.x or higher available 
PERL_VERSION=$PANDORA_PERL_PATH -v | egrep 'v5.[6-9]|v5.[1-3][0-9]' | grep perl
```


This will only work up to version 5.39.x. A better way to compare version numbers is required.

A quick fix is to change the line to this:
```
PERL_VERSION=$PANDORA_PERL_PATH -v | egrep 'v5.[6-9]|v5.[1-4][0-9]' | grep perl
```
Thanks.

Jon.
Sergio B. replied 7 months ago 2 Members · 9 Replies
9 Replies

JonRussell

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October 28, 2025 at 21:56

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I have no idea why it posted like that. 

Here’s what it should have said …




Hi,

There is a bug in pandora_agent_installer where it incorrectly identifies the latest version of Perl v5.40.1 as earlier than v5.6.x

./pandora_agent_installer –install –no-tentacle-server

Perl 5.6.x or higher is not detected.

This is required for Pandora FMS

Detected:

Aborting install…

When I check my version of Perl I get:

perl –version

This is perl 5, version 40, subversion 1 (v5.40.1) built for aarch64-linux-gnu-thread-multi

The bug is in this line:

# Check for Perl 5.6.x or higher available

PERL_VERSION=$PANDORA_PERL_PATH -v | egrep 'v5.[6-9]|v5.[1-3][0-9]' | grep perl

This will only work up to version 5.39.x. A better way to compare version numbers is required.

A quick fix is to change the line to this:

PERL_VERSION=$PANDORA_PERL_PATH -v | egrep 'v5.[6-9]|v5.[1-4][0-9]' | grep perl

Thanks.

Jon.
Sergio B.

Administrator
October 29, 2025 at 08:29

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Hello Jon,

If I understood your question here, you’re having trouble when installing an Agent, probably in Fedora right?

This is not a common bug as we have no problems with the agent installer in any of our labs or clients so, what we can recommend you to do, is simply comment that check inside the installer script so it will not perform the comparison with your current version.

This way the agent should install with no issues as long as the Perl version is the latest available.

Kind regards,

Sergio B.
- JonRussell
 
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 October 29, 2025 at 13:38
 
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 Hi. thanks. there is an actual bug.
 
 This line only works up to perl 5.39. and the current release is 5.40
 
 PERL_VERSION=$PANDORA_PERL_PATH -v | egrep 'v5.[6-9]|v5.[1-3][0-9]' | grep perl
 
 The problem is I install using ansible, which means all my ansible scripts fail. and I have to manually log in, edit the file and install manually. It would be nice if a fix was in the main product.
 
 Thanks.
- JonRussell
 
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 October 29, 2025 at 13:45
 
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 <div>
 
 $ echo “v5.38.1” | egrep ‘v5.[6-9]|v5.[1-3][0-9]’
 
 v5.38.1
 
 $ echo “v5.39.1 | egrep ‘v5.[6-9]|v5.[1-3][0-9]’
 
 v5.39.1
 
 $ echo “v5.40.1” | egrep ‘v5.[6-9]|v5.[1-3][0-9]’
 
 $ echo “v5.41.1 | egrep ‘v5.[6-9]|v5.[1-3][0-9]’
 
 $ perl -v
 
 This is perl 5, version 40, subversion 1 (v5.40.1)
 
 </div>
Sergio B.

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November 6, 2025 at 08:17

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Hello Jon,

This only happens in Fedora, is not a bug, is the way fedora reads that line.

You can install the agent in Ubuntu, Mint, Rocky, RHEL, OpenSuse, etc, you will not have the issue.

In this case as mentioned, comment the version check so it skips it and lets you install the agent.

Kind regards,

Sergio B.
- JonRussell
 
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 November 6, 2025 at 09:24
 
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 Hi.
 
 This is on Ubuntu, 24.04 LTS.
 
 This regular expression “5.[1-3][0-9]” matches from 5.10 to 5.39.
 
 
 
 Perl just releases 5.40. 
 
 Its not OS related.
 - This reply was modified 7 months ago by JonRussell.
Sergio B.

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November 6, 2025 at 14:03

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Hello Jon,

I apologize, you are right, the problem is new.

We had the same problem before with Fedora and it was an OS related problem.

But this issue you’re reporting is new and is already in progress in development.

There is no release yet with the fix applied but basically you can edit the file pandora_agent_installer and change the 3 to a 9 in the variable that performs the check and you will have it running as you can see in the screenshot attached below.

Kind regards,

Sergio B.
- JonRussell
 
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 November 6, 2025 at 14:52
 
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 Perfect!
 
 Thanks.
 
 On an unrelated topic. Do you have any idea why all my posts appear as HTML!!! :-)
 
 🤣
Sergio B.

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November 6, 2025 at 16:02

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Hell Jon,

I have no idea, I was using AI to extract the messages.

Are you using any app or something to post the messages?

Maybe a different browser, some sort of app or something like this?

If it’s not the case, try to clear cache or try incognito in the browser to see if it helps.

Kind regards,

Sergio B.

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Bug in pandora_agentsunixpandora_agent_installer detecting perl version