Zabbis agent errors with encryption enabled

[rkcp613]

We are new to Zabbix and very happy that we chose zabbix for our monitoring solution.
I am getting some strange errors when using encryption with zabbix agents on remote sites.
At times, we get the below errors and trying to figure out what is causing it. Encyption is based on PSK.

Setup is as follows:

Zabbix Primary (1.2.3.4:10051) <----- Firewall on both ends <--- Zabbix Agent (remote site with encryption enabled. Active checks only)

Zabbix server - 3.2
Zabbix Agent - 3.2 (tried with gnutls and openssl compiled versions)


gnutls version:
gnutls_bye() with 1.2.3.4 returned error code: -53 Error in the push function.
active check data upload to [1.2.3.4:10051] started to fail ([send] gnutls_record_send() failed: -53 Error in the push function.)
active check data upload to [1.2.3.4:10051] is working again


openssl version:
active check data upload to [1.2.3.4:10051] started to fail ([send] TLS write returned error code 5:: )


Any help is highly appreciated.

thanks.

[andris]

Maybe you can try to look at traffic with Wireshark/tcpdump to see problems (better on both agent and server side).
"gnutls_bye() .... -53 Error in the push function" might have something to do with sending data (TLS close messages) into closed connection.

[rkcp613]

Thanks. Will capture the network traffic and see how it goes.