Installed server starts up fine but dashboard says ut's not running

[caspersgrin]

Hi,

I build Zabbix from source and installed it on a Redhat server for evaluation. I started the server from the command line (./zabbix_server) and it certainly is running, but according to the Dashboard it's not running. Is there some connector that I missed when I built it?

Thanks,

Rob Tanner
Linfield College

[tchjts1]

See this thread... I think it is what you are experiencing. Alexei gives a suggestion in the last post.

https://www.zabbix.com/forum/showthread.php?t=41803

[caspersgrin]

Thanks for the quick reply but the suggestion is the post you referred me to was to make sure KeepAlive is off, and it was already off. In addition I went and commented out all the various KeepAlive parameters which should be unnecessary since KeepAlive itself is set to off. And it made no difference.

What I've ben able to determine so far is that whether or not the server is running is determined in the get_status() function in config.inc.php. The line in question is:

$status['zabbix_server'] = zabbixIsRunning() ? _('Yes') : _('Nope');

(note that I changed 'No' to 'Nope' to see if that was the status reported and confirm I was looking at the right spot.

The line call the zabbixIsRunning() function below:

function zabbixIsRunning() {
	global $ZBX_SERVER, $ZBX_SERVER_PORT;

	if (empty($ZBX_SERVER) || empty ($ZBX_SERVER_PORT)) {
		return false;
	}

	$result = (bool) fsockopen($ZBX_SERVER, $ZBX_SERVER_PORT, $errnum, $errstr, ZBX_SOCKET_TIMEOUT);
	if (!$result) {
		clear_messages();
	}

	return $result;
}

This function attempts to open a socket to, I presume, port 10051. The way I test access to a socket is to telnet to it and see if I get a connection. In this case I get access denied:

telnet localhost 10051
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

Also, netstat doesn't show that socket open and listening. If the zabbix_server is supposed to be listening on socket 10051, it appers not to be doing so.

Any ideas?

Thanks,
Rob

[tchjts1]

This function attempts to open a socket to, I presume, port 10051. The way I test access to a socket is to telnet to it and see if I get a connection. In this case I get access denied:

Rob

Hi Rob. Excellent research. I don't know the answer to your issue, but $ZBX_SERVER_PORT is defined in zabbix.conf.php

[caspersgrin]

The port is defined as 10051. I suppose I can rebuild the server but I don't see any options in configure to enable or not enable the port listener in the server.

I built and installed from source, version 2.0.6. Are there any known issues with that version that might be causing my problem?

~ Rob

[tchjts1]

I am also on 2.0.6 installed on RHEL. I don't have the frequency of "Zabbix server is not running" that you have, but I will occasionally see that message for 10 or 15 seconds maybe once every week or two.

[vintagegamingsystems]

service zabbix-server start

Try to kill your zabbix server process that is running

Try the command.

This will work if you have the zabbix server setup in chkconfig.

$ service zabbix-server stop

$ service zabbix-server start

You can also check the zabbix_server.log file to see if there is anything strange in there.

I suggest trying an installation via the RHL repositories instead of building it from source.

[trikke76]

it's probably an selinux problem


semanage port -a -t http_port_t -p tcp 10051


if u want to use ping u will also have to create a selinux rule to allow zabbix to talk with ping as root

[caspersgrin]

Actually, I think it's a database issue (assuming that if it doesn't begin to listen on 10051 until it connects to the database). It can't connect and in the zabbix log I get the following:

Access denied for user 'root'@'localhost' (using password: NO)

But in zabbix.conf.php, I have the following:

$DB['TYPE']     = 'MYSQL';
$DB['SERVER']   = 'localhost';
$DB['PORT']     = '3306';
$DB['DATABASE'] = 'zabbix';
$DB['USER']     = 'zabbix';
$DB['PASSWORD'] = 'secret';

As you can see, it's not configured to go to root@localhost, so where is it getting that? Any ideas?

[caspersgrin]

'Tis up!!!

Found my own answer. The file where the server get's its configuration is /usr/local/etc/zabbix_server.conf. While the PHP file was correct, the server obviously doesn't read that one. With the correct database user and password, it connected to the database and fully came up. It's now listening on port 10051 and the dashboard reports that it's up.

[trikke76]

ok great u found it

enjoy zabbix.