Get value from agent & Timeout while connecting

[Spirou]

Hi,

i am on zabbix and i can't connect to my host, i receive the message bellow :

Get value from agent failed: cannot connect to [[host.test.zone.fr]:10050]: [111] Connection refused

and

Timeout while connecting to "host.test.zone.fr:161"

From my serveur zabbix (ubuntu) with commande line "snmpget" to my my host
"host.test.zone.fr" its ok but not in GUI zabbix :/

any ideas ?

regards.

[aib]

Check firewalls on both sides - on server side and on agent side.

[Spirou]

Check firewalls on both sides - on server side and on agent side.

There is no firewall, no iptables.

it work on the zabbix server :

snmpget -v2c comZabbix host.test.zone.fr 1.2.5.2.12210.0.1 (etc.)

but not work in zabbix server GUI

[aib]

There is no firewall, no iptables.

it work on the zabbix server :

snmpget -v2c comZabbix host.test.zone.fr 1.2.5.2.12210.0.1 (etc.)

but not work in zabbix server GUI

I'm not sure what are you talking about.

In first message you complained about broken connection between Zabbix Server and Zabbix Agent (port 10050)

Now you are showing me that SNMP connection allowed (port 161).

I assume that some "hosts-in-between" can pass SNMP packets and reject packets from high number ports (port 10050 in case of Zabbix).

Did you try to connect from Zabbix server to agent by telnet?

Telnet host.test.zone.fr 10050

Are you completely sure that Zabbix Agent started on client's side and listening to port 10050?

Did you try to test Zabbix Agent on client's side?

zabbix_agentd -p

Take a look on instruction about Zabbix Agent installation

http://shifengchen1.blogspot.ca/2013/06/zabbix-agent-installation.html

[Spirou]

I'm not sure what are you talking about.

In first message you complained about broken connection between Zabbix Server and Zabbix Agent (port 10050)

Now you are showing me that SNMP connection allowed (port 161).

I assume that some "hosts-in-between" can pass SNMP packets and reject packets from high number ports (port 10050 in case of Zabbix).

Did you try to connect from Zabbix server to agent by telnet?

Telnet host.test.zone.fr 10050

Are you completely sure that Zabbix Agent started on client's side and listening to port 10050?

Did you try to test Zabbix Agent on client's side?

zabbix_agentd -p

Take a look on instruction about Zabbix Agent installation
http://shifengchen1.blogspot.ca/2013...tallation.html

well, in fact im using 99% snmp and in the GUI zabbix it say 'failed to connect' and the host is in 'red' while in command line it work like i said on my linux server zabbix (snmpget).

ill hope be clear

regards.

[Spirou]

I dont understand why snmp is not "available" in green on zabbix gui.

[aib]

I dont understand why snmp is not "available" in green on zabbix gui.

What do you mean?
I'm using Zabbix 3.0.3 and all my SNMP controlled devices have Green Availability rectangle

[Spirou]

What do you mean?
I'm using Zabbix 3.0.3 and all my SNMP controlled devices have Green Availability rectangle

yes and mine is red and when click on the red ti say :

Timeout while connecting to "host.test.zone.fr:161"

[Spirou]

the item snmpV2agent i create in zabbix had probably the wrong snmpass OID and i think that the reason snmp is in red.
how can i make a simple test with snmp with an OID like "sysLocation"?

regards.

[aib]

1) Create a new host
2) Add SNMP Interface with correct IP address
3) Add template "Template SNMP device"

Switch to Monitoring -> Latest Data, select new host and wait for new data.
In the same time, check zabbix_server.log for any error messages.

tail -f /var/log/zabbix/zabbix_server.log

For me, all error messages about "Timeout...." mean - It's smell Firewall-ish.

[Spirou]

ok tx the result :

1352:20160629:222823.229 SNMP agent item "sysUpTime" on host "hostsnmp" failed: first network error, wait for 15 seconds
1354:20160629:222846.462 SNMP agent item "sysUpTime" on host "hostsnmp" failed: another network error, wait for 15 seconds
1354:20160629:222909.484 temporarily disabling SNMP agent checks on host "hostsnmp": host unavailable

[Spirou]

1354:20160629:223106.601 temporarily disabling SNMP agent checks on host "ubuntu": host unavailable

[Spirou]

Well, it seem when i add snmp interface with 127.0.0.1 it work but when i put 192.168.1.13 it dont work, its the same server !

[aib]

Check this about configuration of SNMPD and iptables on Ubuntu
http://serverfault.com/questions/333...cess-on-ubuntu

[zabx_ks]

Hi,

Small question...
1) Have you set your hostname host.test.zone.fr in zabbix_agent.conf file?
whatever yes or no I recommend better to use IP address not hostnames.

Server=***********
ServerActive=*******

2) And +1 what Aib said - check if your ports are open and deal with SELinux.

3) Can you find more info in log file?

zabx_ks