Zabbix Documentation 4.4

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manual:installation:known_issues

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manual:installation:known_issues [2019/04/18 08:58]
martins-v flipping frontend locales
manual:installation:known_issues [2019/12/10 13:32]
martins-v high memory usage has been observed during process startup with SQLite 3.7.17 on Centos/RHEL 7
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 If the OpenBSD operating system is used, a use-after-free bug in the Net-SNMP library up to the 5.7.3 version can cause a crash of Zabbix server if the SourceIP parameter is set in the Zabbix server configuration file. As a workaround, please do not set the SourceIP parameter. The same problem applies also for Linux, but it does not cause Zabbix server to stop working. If the OpenBSD operating system is used, a use-after-free bug in the Net-SNMP library up to the 5.7.3 version can cause a crash of Zabbix server if the SourceIP parameter is set in the Zabbix server configuration file. As a workaround, please do not set the SourceIP parameter. The same problem applies also for Linux, but it does not cause Zabbix server to stop working.
 A local patch for the net-snmp package on OpenBSD was applied and will be released with OpenBSD 6.3. A local patch for the net-snmp package on OpenBSD was applied and will be released with OpenBSD 6.3.
 +
 +=== Alerter process crash in Centos/RHEL 7 ===
 +
 +Instances of a Zabbix server alerter process crash have been encountered in Centos/RHEL 7. Please see [[https://​support.zabbix.com/​browse/​ZBX-10461|ZBX-10461]] for details.
  
 === Flipping frontend locales === === Flipping frontend locales ===
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 It has been observed that with PHP 7.0 importing a template with web monitoring triggers may fail due to incorrectly added double quotes to the web monitoring items in the trigger expressions. The issue goes away when upgrading PHP to 7.1. It has been observed that with PHP 7.0 importing a template with web monitoring triggers may fail due to incorrectly added double quotes to the web monitoring items in the trigger expressions. The issue goes away when upgrading PHP to 7.1.
 +
 +=== PHP 7.3 opcache configuration ===
 +
 +If %%"​%%opcache%%"​%% is enabled in the PHP 7.3 configuration,​ Zabbix frontend may show a blank screen when loaded for the first time. This is a registered [[https://​bugs.php.net/​bug.php?​id=78015|PHP bug]]. To work around this, please set the %%"​%%opcache.optimization_level%%"​%% parameter to ''​0x7FFFBFDF''​ in the PHP configuration (php.ini file).
  
 === Graphs === === Graphs ===
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 Maps, in Internet Explorer 11, are cut off on the right side if the map content is larger than the dashboard widget area (instead of being resized proportionately). This is intentional because of an IE11-related issue with proper resizing of SVG images. Maps, in Internet Explorer 11, are cut off on the right side if the map content is larger than the dashboard widget area (instead of being resized proportionately). This is intentional because of an IE11-related issue with proper resizing of SVG images.
 +
 +=== Known issues in 4.4.0 - 4.4.3 ===
 +
 +  * High memory usage has been observed during process startup with SQLite 3.7.17 on Centos/RHEL 7. The startup process has been improved in 4.4.4 to avoid similar issues with other databases as well. See [[https://​support.zabbix.com/​browse/​ZBX-9084|ZBX-9084]] for more details.