Certificate issue while connecting from master to client

Icinga 2
,
1

The Icinga server is monitoring everything like ping and SSL status correctly but services like disk, users and load are not being monitored the dashboard displays this error

Remote Icinga instance 'client1.domain.com' is not connected to 'master.domain.com'

Screenshot from 2023-05-18 17-52-20

and while looking in the log I am getting this

[2023-05-18 11:51:39 +0000] warning/JsonRpcConnection: API client disconnected for identity 'ds01fr.01cloud.com'
[2023-05-18 11:51:47 +0000] information/ApiListener: Reconnecting to endpoint 'client1.domain.com' via host '149.202.166.163' and port '5665'
[2023-05-18 11:51:49 +0000] information/ApiListener: New client connection for identity 'client1.domain.com' from [::ffff:XXX.XXX.XXX.XXX]:33700 (certificate validation failed: code 7: certificate signature failure)
[2023-05-18 11:51:49 +0000] warning/JsonRpcConnection: API client disconnected for identity 'client1.domain.com

I have also Disabled certificate verification for untrusted certificates. Redployed new certificates, but nothing seems to be working, if anyone has encountered this issue please help me

2

agent certifiate is not signed by the ca, so untrusted.

I have also Disabled certificate verification for untrusted certificates

where did you do that?

3

edited /etc/icinga2/features-enabled/api.conf to

object ApiListener "api" {
  accept_config = false
  accept_commands = false
}
4

that doesn’t disable certificate verification

5

I got the same issue in incident Execvpe(/usr/lib/check_service.exe) failed: No such file or directory

I have trusted the CA and Client Certificate on the Agent and its still unknown / impossible to connect to master.

Firewall Ports are open, …

Has anyone an Idea on this topic?