No active checks on server: host not found

[uknet80]

Hi Guys,

I am using save Linux machine as Zabbix server and agent, but still i get error host not found as shown bellow:

server hostname is (test.linux.local), i have this record under DNS and /etc/hosts file, I can ping test.linux.local, linux.local, test and localhost too.

zabbix_agentd.conf file configuration is

Server=127.0.0.1
Hostname=test.linux.local
LogFile=/tmp/zabbix_agentd.log



zabbix_server.log
Sending list of active checks to [127.0.0.1] failed: host [test.linux.local] not found

zabbix_agentd.log
No active checks on server: host [test.linux.local] not found

netstat -tupln
tcp 0 0 0.0.0.0:10050 0.0.0.0:* LISTEN 4232/zabbix_agentd
tcp 0 0 0.0.0.0:10051 0.0.0.0:* LISTEN 4185/zabbix_server

any idea how to solve this?

thanks

[bashman]

Have you tried to write server IP instead of 127.0.0.1?

Do you specify server port?

[uknet80]

I have even specified server IP, still same thing. do i have to mention Hostname, I haven't specify server port, what do i need to add?

Server=192.168.1.110
Hostname=test.linux.local
LogFile=/tmp/zabbix_agentd.log

[bashman]

You have to specify the Server IP and if you don't specify the port, 10050 will be the default port.

http://www.zabbix.com/documentation/.../zabbix_agentd

[uknet80]

how about adding new host, I have added new host and i am not getting errors. from web browser -> configuration -> Hosts, I have added the host, and it is monitored, but under Availability column, the Z mark is gray, it looks like the server can't see it agent. is that true or I am missing something?

[bashman]

Yeah, that's right, when the Z mark is green means that the server can see the agent and they can communicate.

[MrKen]

Don't confuse DNS name with Zabbix Hostname.

Your test.linux.local looks like a dns name. DNS names should resolve with the IP address, however the Hostname in the zabbix_agentd.conf and in the GUI does not need to resolve anything, only itself.

Try this:
Server=192.168.1.110
Hostname=uknet80Server

Then in the gui, host config be sure you have the same Hostname and that you have selected 'Connect to: IP Address'.

If test.linux.local is a resolvable dns name, you could do this:

Server=test.linux.local
Hostname=uknet80Server

And then be sure that you have selected 'Connect to: DNS Name' in the gui.

MrKen

[uknet80]

I restarted the server, and haven't start zabbix_server or agentd that is running on the same server. the strange think is till from the browser i can see the agent that is on the zabbix_server, and it is active.

you said Hostname=uknet80Server, that is agent name or server name?

[uknet80]

Let me tell you my setting & Steps, I have been trying to fix this for three days with no luck:

Server IP address is 192.168.1.119 (test.linuxtest.localhost), i can ping the name from any where it is on DNS, the zabbix server act as server and agent, the following settings:

/etc/zabbix/zabbix_server.conf
ListenPort=10051
DBName=zabbix
DBUser=root
DBPassword=Password

/etc/zabbix/zabbix_agentd.conf
Server=192.168.1.119
Hostname=test.linuxtest.localhost
ListenPort=10050
LogFile=/tmp/zabbix_agentd.log


machine 2 (Agent 2) has the following setting
/etc/zabbix/zabbix_agent.d.conf
Server=192.168.1.119
Hostname=mv
ListenPort=10050
LogFile=/tmp/zabbix_agentd.log


zabbix_server.log
4878:20100505:162204.796 Deleted 0 records from history and trends
4870:20100505:162458.422 Sending list of active checks to [192.168.1.119] failed: host [test.linuxtest.localhhost] not found

zabbix_agentd.log
4933:20100505:162458.419 zabbix_agentd active check started [192.168.1.119:10051]
4933:20100505:162458.422 No active checks on server: host [test.linuxtest.localhhost] not found

zabbix_agentd.loc on Agent2
2230:20100505:162817.174 zabbix_agentd collector started
2234:20100505:162817.183 No active checks on server: host [mv] not found


I will be so grateful if you could help me with this

[alixen]

Hi,

You have to make sure that server name in Zabbix server and agent are the same. See my remarks below.

Let me tell you my setting & Steps, I have been trying to fix this for three days with no luck:

Server IP address is 192.168.1.119 (test.linuxtest.localhost), i can ping the name from any where it is on DNS, the zabbix server act as server and agent, the following settings:

/etc/zabbix/zabbix_server.conf
ListenPort=10051
DBName=zabbix
DBUser=root
DBPassword=Password

/etc/zabbix/zabbix_agentd.conf
Server=192.168.1.119
Hostname=test.linuxtest.localhost

According to screenshot this machine is called "Zabbix Server" not "test.linuxtest.localhost" in Zabbix.

ListenPort=10050
LogFile=/tmp/zabbix_agentd.log


machine 2 (Agent 2) has the following setting
/etc/zabbix/zabbix_agent.d.conf
Server=192.168.1.119
Hostname=mv

According to screenshot this machine is called vm not mv in Zabbix.

ListenPort=10050
LogFile=/tmp/zabbix_agentd.log


zabbix_server.log
4878:20100505:162204.796 Deleted 0 records from history and trends
4870:20100505:162458.422 Sending list of active checks to [192.168.1.119] failed: host [test.linuxtest.localhhost] not found

zabbix_agentd.log
4933:20100505:162458.419 zabbix_agentd active check started [192.168.1.119:10051]
4933:20100505:162458.422 No active checks on server: host [test.linuxtest.localhhost] not found

zabbix_agentd.loc on Agent2
2230:20100505:162817.174 zabbix_agentd collector started
2234:20100505:162817.183 No active checks on server: host [mv] not found


I will be so grateful if you could help me with this

Rename host "Zabbix Server" to "test.linuxtest.localhost" and replace "mv" by "vm" in zabbix agent configuration and it should be OK.

Regards,
Alixen

[uknet80]

after changing the server name as you advised, I am not getting errors for the agent under the server test.linuxtest.localhost (192.168.1.119). THANKS FOR YOUR HELP

still I am getting error for machine 2 (Agent 2)
i have reinstalled the machine with a new name to prevent confution. Setting

Agent name (redhat2) 192.168.122.239
Server=192.168.1.119
Hostname=redhat2
ListenPort=10050
LogFile=/tmp/zabbix_agentd.log

server same "test.linuxtest.localhost (192.168.1.119)"

Error on server
13238:20100506:102935.455 Sending list of active checks to [192.168.122.239] failed: host [redhat2] not found

Error on Agent
11418:20100506:102732.513 No active checks on server: host [redhat2] not found

I can ping redhat2 from server side.

On the webmonitor host has been added: redhat2 with 192.168.122.239 (see image)

Do I need to add agent name into zabbix_server.conf file or any where else, because how can the server knows if a specific Agent authorised to send reports, is it only from the web browser (Configuration->Host->Create host)?

[MrKen]

What happens if you link the Template_Linux to your Host redhat2?

[Shouldn't need to, but, maybe restart zabbix_agentd on redhat2]

MrKen

[uknet80]

what do you mean by (What happens if you link the Template_Linux to your Host redhat2?) how can i do that?

[alixen]

Hi,

what do you mean by (What happens if you link the Template_Linux to your Host redhat2?) how can i do that?

According to your snapshot, redhat2 host has 0 items, 0 triggers, 0 graphs. What do you expect ?

May be it is time to stop hacking Zabbix configuration, relax and read the manual: http://www.zabbix.com/documentation/1.8/manual

Regards,
Alixen

[uknet80]

the problem i have is the error message i am getting from the minute i start the service. active and passive check is disabled by default, do i need to enable them? do you have any other suggestions? as i have followed all the stop needed

thanks