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telnet check fails for host, but zabbix_get returns 1

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  • moises.cora
    Junior Member
    • Sep 2018
    • 1

    #1

    telnet check fails for host, but zabbix_get returns 1

    Hello

    I have a Zabbix server with 2 proxies. All 3 servers are running zabbix agents as well. I'm monitoring remote systems, connected through VPN and these systems do not have agents loaded. I'm running simple checks (net.tcp.service[telnet]) and most times it works just as expected.

    However, I have a few systems that are always failing (return 0) on the regular monitoring schedule (every 6 hours). The case I'm testing is on one of my proxies.

    proxy server address 3.187.100.2 (with agent running)
    host IP 10.232.82.129 (agentless)

    - If I log into the proxy server and telnet the host from there, I can connect to it.
    - As I said, simple checks for telnet service fails
    - if I run zabbix_get -s 3.187.100.2 -k 'net.tcp.service.perf[telnet,10.232.82.129]' it returns 1

    So, assuming that this command is using the proxy agent to test telnet on the host IP, why am I getting errors on the scheduled checks?
    What am I doing wrong?

    Thanks


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