Zabbix - Get value from agent failed: ZBX_TCP_READ() failed: [104] Connection reset by peer

Support
1

NethServer Version: 7.9

Tried to install zabbix-server but after the installation the agent fails…

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Any Ideas?

2

Did you install the Zabbix server module?

Is the agent installed?

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3

This is was I did:

yum -y install https://mrmarkuz.dynu.net/mirror/mrmarkuz/7/noarch/nethserver-mrmarkuz-0.0.1-6.ns7.noarch.rpm
yum -y install https://repo.zabbix.com/zabbix/5.0/rhel/7/x86_64/zabbix-release-5.0-1.el7.noarch.rpm
yum -y --enablerepo=mrmarkuz,zabbix,zabbix-frontend install nethserver-zabbix
yum -y install nethserver-zabbix-agent --enablerepo=mrmarkuz
4

Is the agent running?

systemctl status zabbix-agent -l

Is it enabled?

config show zabbix-agent

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5 
[root@infra02 ~]# zabbix_agent2
zabbix_agent2 [7799]: ERROR: cannot initialize PID file: Is this process already running? Could not lock PID file [/var/run/zabbix/zabbix_agent2.pid]: resource temporarily unavailable

Coud this be the problem?

6

No, I think zabbix_agent2 is already running via systemd.

Did you follow the configuration guide?

Please share zabbix agent2 config:

config show zabbix-agent2

…and check which process listens on port 10050:

[root@server ~]# netstat -tlpn | grep 10050
tcp6       0      0 :::10050                :::*                    LISTEN      1177/zabbix_agent2
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7 
[root@infra02 ~]# config show zabbix-agent2
zabbix-agent2=service
    PskID=
    ServerZabbix=infra02.mydomain.lan
    TCPPort=10050
    access=red,green
    status=enabled


[root@infra02 ~]# netstat -tlpn | grep 10050
tcp6       0      0 :::10050                :::*                    LISTEN      8446/zabbix_agent2
8

OK, I think I got it…

grafik
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I had to change the agent-config:

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9

TNX Markus, for your support!

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