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Question

Last Alive issue between the Centreon central unit and two pollers

  • April 30, 2026
  • 1 reply
  • 5 views
A
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Hello everyone,

 

I'm having an issue—apparently a communication problem—between my two collectors and my central server.

 

After investigating and conducting extensive research, particularly in the logs, I'm seeing errors when reading the socket data coming from the poller's IP. Here's an excerpt:

Central:

central-broker-master.log

Poller 1:

centengine.log

 

For your information, the operating systems are AlmaLinux 8 for the central server and AlmaLinux 9 for the pollers. I installed the latest updates on 25.10.25

 

Could you help me resolve this issue and let me know if there are any similar cases currently?

 

Thank you.

1 reply

lpinsivy
Centreonian
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  • lpinsivy
  • Centreonian
  • May 19, 2026

Hi ​@ALHGMY,

Can you check from “Configuration  >  Pollers  >  Broker configuration” menu, that de broker configuration of yours pollers have for the TCP - IPv4 output:

  • Enable TLS encryption: No
  • Enable negotiation: Yes
  • One peer retention: No
  • Connection port: 5669

And for the central-broker-master broker, for TCP - IPv4 input:

  • Enable TLS encryption: No
  • Enable negotiation: Yes
  • One peer retention: No
  • Connection port: 5669

Then generate and export configuration with restart option.

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