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Active checks - started to fail ZBX_TCP_READ

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  • Jozef
    Junior Member
    • Jan 2021
    • 1

    #1

    Active checks - started to fail ZBX_TCP_READ

    Hello,

    I am trying to figure out follow issue. I have client monitored via zabbix proxy but cannot obtain values from Active checks.

    What I currently have:

    1. Items (active) are created in the Zabbix GUI
    2. Hostname match Zabbix server and client configuration - part of the tcpdump: (ZBXD.0.......{"request":"active checks","host":"myhostname"}
    3. Server/proxy response with list of the items for the client : again small part from tcpdump: response":"success","data":[{"key": ........
    4. Client doesn't provide any values - connection is Reset - IP X.X.X.X.53064 > proxy.10051: Flags [R],

    In log file I have only follow error: active check configuration update from [X.X.X.X:10051] started to fail (ZBX_TCP_READ() timed out)
    When I increased debug level follow was reported: End of refresh_active_checks():FAIL

    Telnet on port 10051 works fine from client to proxy.

    Any idea what I could check to fix it?

    Thank you.



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