Zabbix server is not running: the information disp

Question

So all of a sudden, after a week of using it, I get an error message on my zabbix server gui (http://localhost/zabbix/.)

The error says: Zabbix server is not running: the information displayed may not be current.

Any idea why is this happening ll of a sudden and out of the blue? I restarted the machine - which should automatically restore the zabbix server upon startup - but it's still not running.

I also researched for a startup or restart command but true to form with zabbix helpful, clear documentation is non-existent.

EDIT:

Some more info:

MySQL is running normally. I'm able to select, insert into, whatever I want.

Doing /etc/init.d/zabbix-server status results in * zabbix_server is not running

The last entry in zabbix_server.log is Zabbix Server stopped. Zabbix 2.2.9 (revision 52686).

Doing sudo /etc/init.d/zabbix-server start results in * Starting Zabbix server zabbix_server but the status is still not running and the log file doesn't have any new entries.

Answer 1

Install nmap (( # yum/apt-get install nmap ))tool and check to find out which port the zabbix is listenning to?(( # nmap -sT -p1-65535 localhost )) 10050 or 10051? The result should be somthing like this:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-11-01 22:54 IRST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00032s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 65530 closed ports
PORT      STATE SERVICE
22/tcp    open  ssh
25/tcp    open  smtp
80/tcp    open  http
3306/tcp  open  mysql
10050/tcp open  unknown    <--- In my case this is it

Then open /etc/zabbix/web/zabbix.conf.php and check the line starting with: $ZBX_SERVER_PORT , it's value should be the same number you saw in the nmap scan result. Change it and restart zabbix-server and httpd and you are good to go!

Answer 2

As Zabbix Senior Instructor and Consultant Hernandes Martins says in his "Zabbix server is not running what to do?" blog post:

This is the first step that should be checked regardless of the situation, always view the logs, from the moment the error message appeared in the zabbix web interface always view the log.

By following his advice I could be able to identify the cause of the issue with my Zabbix server, and then apply the solution related to the specific problem.

In my case, as I've commented in the page:

The problem in my server was of "4. Resource Allocation Issues". Just like you wrote above, Zabbix was showing out of memory errors on the log when trying to start the server.

After increasing the value of parameter CacheSize I tried to restart the service, but it didn't respond. So, I ended up restarting the whole machine. Fortunately, in the end it resolved the problem for good.

So, take a look at the log with command tail -f /var/log/zabbix/zabbix_server.log on the terminal/prompt, watch for any errors, and attack the problem according to what it makes sense for your particular case.

Answer 3

This may happen because of the old and new IP address I have faced same issue which was solve by below method:

vim /etc/zabbix/web/zabbix.conf.php

$ZBX_SERVER = new ip address

then restart zabbix server

Answer 4

Maybe is configuration issue

nano /etc/zabbix/zabbix_server.conf

DBHost=localhost

DBName=zabbix_db

DBUser=zabbix_user

DBPassword=XXXXXXX

works for me on Zabbix 3.0 Centos 7

Answer 5

i had similar problem and my gui reported problem with cache, i change it zabbix-server.conf to 32M and now is ok, zabbix is an intelligent tool, please if it possible check problems in gui first. I had to much hosts ... for default cache.

Answer 6

just get into the zabbix.conf.php

   >$sudo vim /etc/zabbix/web/zabbix.conf.php
   >$ZBX_SERVER      = '**your zabbix ip address or DNS name**';
   >$ZBX_SERVER_PORT = '10051';
   >$ZBX_SERVER_NAME = '**your zabbix hostname**';

just change the ip address you can resolve the error

Zabbix server is not running: the information displayed may not be current

After that restart the zabbix server

 >$sudo service zabbix-server restart

To verify go to Dashboard Administration -> queue there you see data

i resolved my error like this works fine for me.