Zabbix graphs are missing text

[moshikoy]

Hi,
All my zabbix graphs are not showing a single character on them (see attachment)
I suspect a font issue

specs are: zabbix 3.4.1, installed on Ubuntu 1604 server

- Moshe

[moshikoy]

ehy, anyone can assist on this?

[Atsushi]

How did you install Zabbix?
If you install using the package, that problem should not occur.

Please check whether PHP supports TrueType and GD, and whether the display font in the graph is deployed.

[moshikoy]

How did you install Zabbix?
If you install using the package, that problem should not occur.

Please check whether PHP supports TrueType and GD, and whether the display font in the graph is deployed.

Hi,
I've installed zabbix 3.4.1 from packages, on Ubuntu 16.04 LTS
Using the below instructions

https://www.zabbix.com/documentation/3.4/manual/installation/install_from_packages/debian_ubuntu

Checking the PHP I can see that GD supports TrueType (see picture below)



where else can I check?

- Mosh

[kloczek]

where else can I check?

If you will check php logs probably you will find that php cannot open/find font file.

[moshikoy]

If you will check php logs probably you will find that php cannot open/find font file.

/var/log/apache2/error.log is empty

checked php --info - and found nothing
root@m:/# php --info | grep error -i
display_errors => Off => Off
display_startup_errors => Off => Off
error_append_string => no value => no value
error_log => no value => no value
error_prepend_string => no value => no value
error_reporting => 22527 => 22527
html_errors => Off => Off
ignore_repeated_errors => Off => Off
log_errors => On => On
log_errors_max_len => 1024 => 1024
track_errors => Off => Off
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
opcache.error_log => no value => no value

[kloczek]

In zabbix web frontend directory in fonts is DejaVuSans.ttf file.

$ grep -r DejaVuSans *
Binary file fonts/DejaVuSans.ttf matches
include/defines.inc.php:define('ZBX_GRAPH_FONT_NAME',        'DejaVuSans'); // font file name

Do you have this ttf file installed?

[moshikoy]

In zabbix web frontend directory in fonts is DejaVuSans.ttf file.

$ grep -r DejaVuSans *
Binary file fonts/DejaVuSans.ttf matches
include/defines.inc.php:define('ZBX_GRAPH_FONT_NAME', 'DejaVuSans'); // font file name

Do you have this ttf file installed?

Yes, I do

root@server:~# fc-list | grep -i DejaVuSans
/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf: DejaVu Sans Mono:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansMono-Bold.ttf: DejaVu Sans Mono:style=Bold

[kloczek]

So you are not aware of fact that web server is not able to read anything from outside document root base directory and this is why this font must be placed in web application directory tree?