Zabbix agent Connection refused

[c94660]

Hello,

I have installed an zabbix-agent on a Windows host, while the zabbix-server on CentOS host, but get value error: cannot connect to [[172.16.5.17]:10050]: [111] Connection refused. The zabbix_get command is not working too.
I shutdown the firewall, and there's the same error.
The agent in the same network segment is working well.

How can I resolve this problem?

Thanks.

Cheng

[GPegel]

Could you try to do a nmap?

From CentOS I started nmap to a Windows Server like this:

nmap -Pn -p10050 <servername>

And I got these results back:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-06-30 10:51 CEST
Nmap scan report for servername (ip.address.of.server)
Host is up (0.00047s latency).
rDNS record for ip.address.of.server: servername
PORT      STATE SERVICE
10050/tcp open  unknown
MAC Address: 12:34:56:78:90:00 (VMware)

As you can see, port 10050 is open. So try this first. If it says 'state: closed' then you know that you have to open the port on the Windows server.

[Balaraju]

Zabbix agent Connection refused

Hi ,

for testing purpose disable the firewall and type this below command.

Telnet the server :
telnet <server ip> 10050

if it telnet works good ,use below command.

/usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf

If it's work then enable the firewall and try again.

[c94660]

Could you try to do a nmap?

From CentOS I started nmap to a Windows Server like this:

nmap -Pn -p10050 <servername>

And I got these results back:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-06-30 10:51 CEST
Nmap scan report for servername (ip.address.of.server)
Host is up (0.00047s latency).
rDNS record for ip.address.of.server: servername
PORT      STATE SERVICE
10050/tcp open  unknown
MAC Address: 12:34:56:78:90:00 (VMware)

As you can see, port 10050 is open. So try this first. If it says 'state: closed' then you know that you have to open the port on the Windows server.

Sorry for reply so late.
I tried telnet agent client's 10050 port from server host, but it's failed when I shutdown all the firewalls. Then I telnet 127.0.0.1:10050 on agent client host itself, it's working, so strange problem.
ps: nmap command is not found.

[valegator]

Add your server to the allowed hosts list

The agent itself is probably refusing the connection, not the firewall.
Did you list your server in the Zabbix Agent config file like this:
Server="yourServerFQDNorIP"

If not, the server is not allowed to connect.
How to implement a config file with windows agent:

https://www.zabbix.com/documentation/3.0/manual/appendix/install/windows_agent#configuring_agent

The parameters:

https://www.zabbix.com/documentation/3.0/manual/appendix/config/zabbix_agentd_win

[c94660]

The agent itself is probably refusing the connection, not the firewall.
Did you list your server in the Zabbix Agent config file like this:
Server="yourServerFQDNorIP"

If not, the server is not allowed to connect.
How to implement a config file with windows agent:

https://www.zabbix.com/documentation/3.0/manual/appendix/install/windows_agent#configuring_agent

The parameters:
https://www.zabbix.com/documentation...bix_agentd_win

I have already set the server ip in the config file like this:
server="myServerIP"
serverActive="myServerIP:10051"
but it's not working

[valegator]

DebugLevel and Services

Is the Windows Service of Zabbix Agent running and do you find your host listening on port 10050 when executing "netstat -ao" in the command line?
Did you check the Zabbix Agent's agentd.log file in the Agent install folder for any errors?
If you do not find any useful information there, you can set the DebugLevel for the agent higher to troubleshoot.

[c94660]

Is the Windows Service of Zabbix Agent running and do you find your host listening on port 10050 when executing "netstat -ao" in the command line?
Did you check the Zabbix Agent's agentd.log file in the Agent install folder for any errors?
If you do not find any useful information there, you can set the DebugLevel for the agent higher to troubleshoot.

The Windows zabbix agent is running, and listening on port 10050.
The agentd.log shows an error after start agent: failed to accept an incoming connection: connection from "127.0.0.1" rejected, allowed hosts: "10.20.171.48".
I thought the incomming connection should be from zabbix server(10.20.171.48), but it looks like from agent host self. Strange!
I'm sure I configured "Server=10.20.171.48" and "ServerActive=10.20.171.48:10051" in the configuration file, which the agent started with.
Is it right?

[c94660]

Is the Windows Service of Zabbix Agent running and do you find your host listening on port 10050 when executing "netstat -ao" in the command line?
Did you check the Zabbix Agent's agentd.log file in the Agent install folder for any errors?
If you do not find any useful information there, you can set the DebugLevel for the agent higher to troubleshoot.

With the debug level 4, the log repeat like this:
------------------------------------------------------------
In collect_perfstat()
End of collect_perfstat()
In send_buffer() host:'10.20.171.48' port:10051 entries:0/100
End of send_buffer():SUCCEED
------------------------------------------------------------

And this:
-----------------------------------------------------------
In refresh_active_checks() host:'10.20.171.48' port:10051
sending [{"request":"active checks","host":"web5"}]
before read
got [{"response":"success","data":[]}]
In parse_list_of_checks()
End of parse_list_of_checks():SUCCEED
End of refresh_active_checks():SUCCEED
In process_active_checks() server:'10.20.171.48' port:10051
End of process_active_checks()
In get_min_nextcheck()
End of get_min_nextcheck():-1
In collect_perfstat()
End of collect_perfstat()
-------------------------------------------------------------
It seems no error happened.