Zabbix proxy: Utilization of data sender processes over 75%

[jdoggy31]

Does anyone have hints on why this happens, or how to troubleshoot?

The site has good internet, error doesn't occur on all proxies.

Required VPS 13.84, according to the proxies page.
MariaDB
Zabbix proxy 6.2

[cyber]

You can always increase logging level of that data sender process and see, if something comes out of it...
My gut feeling says, its not the proxy, but the other end that delays things, so proxy process keeps sending constantly...

[jdoggy31]

Im kinda a linux newb, How do I increase the logging level of the sender process.

[cyber]

https://www.zabbix.com/documentation/current/en/manual/concepts/proxy

Runtime control...
zabbix_proxy -R log_level_increase="data sender"

[jdoggy31]

Looks like you are right something outside the proxy, maybe, every once in a while the connection time out to the server, I'm not sure how what the next step is.

979:20221128:210527.375 In zbx_recv_response()
979:20221128:210527.411 zbx_recv_response() '{"upload":"enabled","response":"success"}'
979:20221128:210527.411 End of zbx_recv_response():SUCCEED
979:20221128:210527.411 End of zbx_put_data_to_server():SUCCEED
979:20221128:210527.411 End of proxy_data_sender():SUCCEED more:0 flags:0x8000
979:20221128:210527.411 zbx_setproctitle() title:'data sender [sent 0 values in 0.082167 sec, idle 1 sec]'
979:20221128:210528.411 zbx_setproctitle() title:'data sender [sent 0 values in 0.082167 sec, sending data]'
979:20221128:210528.411 In proxy_data_sender()
979:20221128:210528.411 query [txnlev:0] [select t.taskid,t.type,t.clock,t.ttl,r.status,r.parent_ta skid,r.info,tr.status,tr.parent_taskid,tr.info,d.d ata,d.parent_taskid,d.type from task t left join task_>
979:20221128:210528.412 In zbx_connect_to_server() [Zabbix.server.net]:10051 [timeout:600, connection timeout:4]
979:20221128:210528.458 In is_ip4() ip:'Zabbix.server.net'
979:20221128:210528.458 End of is_ip4():FAIL
979:20221128:210528.458 In is_ip6() ip:'Zabbix.server.net'
979:20221128:210528.458 End of is_ip6():FAIL
979:20221128:210528.458 In zbx_put_data_to_server() datalen:126
979:20221128:210528.458 In zbx_recv_response()
979:20221128:210528.494 zbx_recv_response() '{"upload":"enabled","response":"success"}'
979:20221128:210528.494 End of zbx_recv_response():SUCCEED
979:20221128:210528.494 End of zbx_put_data_to_server():SUCCEED
979:20221128:210528.494 End of proxy_data_sender():SUCCEED more:0 flags:0x8000
979:20221128:210528.494 zbx_setproctitle() title:'data sender [sent 0 values in 0.082832 sec, idle 1 sec]'
979:20221128:210529.495 zbx_setproctitle() title:'data sender [sent 0 values in 0.082832 sec, sending data]'
979:20221128:210529.495 In proxy_data_sender()
979:20221128:210529.495 query [txnlev:0] [select t.taskid,t.type,t.clock,t.ttl,r.status,r.parent_ta skid,r.info,tr.status,tr.parent_taskid,tr.info,d.d ata,d.parent_taskid,d.type from task t left join task_>
979:20221128:210529.496 In zbx_connect_to_server() [Zabbix.server.net]:10051 [timeout:600, connection timeout:4]
979:20221128:210529.541 In is_ip4() ip:'Zabbix.server.net'
979:20221128:210529.541 End of is_ip4():FAIL
979:20221128:210529.541 In is_ip6() ip:'Zabbix.server.net'
979:20221128:210529.541 End of is_ip6():FAIL
979:20221128:210529.541 In zbx_put_data_to_server() datalen:126
979:20221128:210529.541 In zbx_recv_response()

[cyber]

So, server timeouts... Is there a FW somewhere between proxy and server... Maybe only one way connections are allowed (like for passive proxy, from server to proxy, but not the other way).
Just bad connection? Maye increasing timeout helps?