Zabbix False positives

[sdl]

Hello,
I'm having an issue on my zabbix server. Its version is:

$ zabbix_server --version
zabbix_server (Zabbix) 3.2.4

in monitoring -> problems I have :

Zabbix server has just been restarted
Host information was changed on Zabbix server
Hostname was changed on Zabbix server
/etc/passwd has been changed on Zabbix server

which are all false positive, verified on zabbix server itself.Some of them are resolving and respawning suddenly again.

moreover, I cannot Close these problems using the thickbox on "Event acknowledgements" Menu".It is grayed out.
How can I solve this?
Thanks in advance

[batchenr]

Hello,
I'm having an issue on my zabbix server. Its version is:

$ zabbix_server --version
zabbix_server (Zabbix) 3.2.4

in monitoring -> problems I have :

Zabbix server has just been restarted
Host information was changed on Zabbix server
Hostname was changed on Zabbix server
/etc/passwd has been changed on Zabbix server

which are all false positive, verified on zabbix server itself.Some of them are resolving and respawning suddenly again.

moreover, I cannot Close these problems using the thickbox on "Event acknowledgements" Menu".It is grayed out.
How can I solve this?
Thanks in advance

try checking the same checks that zabbix server is doing via zabbix_get and see what it is getting.

for exsample
zabbix_get -s $ZABBIXSERVERIP-p 10050 -I $ZABBIXSERVERIP -k system.hostname

to see what it gets.
search for more errors in zabbix server log agent log mysql log

[sdl]

Hello batchenr and thank you for your answer.
I searched for zabbix_get binary but it seems that I have it not installed in my system.
For installation, I followed this procedure:

https://www.zabbix.com/documentation/3.2/manual/installation/install_from_packages/repository_installation

then sudo update / install zabbix_server.
Right now I tried :

$ sudo apt-get install zabbix_get
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package zabbix_get
$

with no avail.I also searched the info on how to install this package but no luck.

Meanwhile, I'll check the logs.Could you give me some direction on how to have this really useful tool? (zabbix_get)?
thanks in advance.

[sdl]

Hello batchenr and thank you for your answer.
I searched for zabbix_get binary but it seems that I have it not installed in my system.
For installation, I followed this procedure:

https://www.zabbix.com/documentation/3.2/manual/installation/install_from_packages/repository_installation

then sudo update / install zabbix_server.
Right now I tried :

$ sudo apt-get install zabbix_get
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package zabbix_get
$

with no avail.I also searched the info on how to install this package but no luck.

Meanwhile, I'll check the logs.Could you give me some direction on how to have this really useful tool? (zabbix_get)?
thanks in advance.

Knock Knock.

[batchenr]

Knock Knock.

install from RPM-
i dont know which system you have so just press on what suits you system-

http://repo.zabbix.com/zabbix/3.2/

and make sure Selinux is disabled or else it will make a lot of problems.

[sdl]

Hello again and thanks for last hints.

I found out that I could not install zabbix_get because this tool name in repos is:

zabbix-get

My bad.

Anyway, I searched the logs but no hints there.
I'm attaching a screenshot regarding this trigger:

{Zabbix server:system.uptime.change(0)}<0

which generates false positive every few minutes.

What can be wrong there?

[batchenr]

Hello again and thanks for last hints.

I found out that I could not install zabbix_get because this tool name in repos is:

zabbix-get

My bad.

Anyway, I searched the logs but no hints there.
I'm attaching a screenshot regarding this trigger:

{Zabbix server:system.uptime.change(0)}<0

which generates false positive every few minutes.

What can be wrong there?

can you maybe increse debug level at zabbix_server.conf and restart zabbix server - and then maybe we will have more info - i have checked in my system and this graph is flat.

is this item (system.uptime) comes from the template OS Linux ?

[sdl]

Helo Again,
sorry for late answer.
I solved the issue, Even if I cannot exactly say what was the cause.
Removing and recreating the same host (same hostname, templates) Solved the issue.Everything back to normal.
The possible cause could be the migration of zabbix DB from an old host to a new one.

Cheers