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Simple zabbix mysql/mariadb housekeeping script to maintain zabbix.history and zabbix.history_uint tables

I've just finished a simple houseskeeping/maintenance script for zabbix if you use mariadb or mysql as database.

You can find it here.

It installs a systemd timer to automatically run optimize on the two tables zabbix.history and zabbix.history_uint.

All you have to do is to add your username and passwort to the created file /etc/net.bazzline/zabbix/housekeeping/local_configuration.sh.

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Arch Linux httpd/apache with php and the issue that php-cli can write to /usr/share/webapps but php-http (php-fpm) can not

I wanted to install dolibarr on my arch linux machine.

The first steps are simple and I tried to stick to the official but little outdated aur package.

#as root
cd /usr/share/webapps
mkdir dolibarr
cd dolibarr
git clone https://github.com/dolibarr/dolibarr -b 14.0.1 .
cd ..
choown -R http:http dolibarr
sudo -u http touch dolibarr/htdocs/conf/conf.php

cat > /etc/httpd/conf/extra/httpd-dolibarr.conf <<DELIM
Alias /dolibarr "/usr/share/webapps/dolibarr/htdocs"

<Directory "/usr/share/webapps/dolibarr/htdocs">
    AllowOverride All
    Options FollowSymlinks Indexes
    Require all granted
</Directory>

# vim: set ft=apache ts=2 sw=2 et:
DELIM

echo "#dolibar" >> /etc/httpd/conf/httpd.conf
echo "Include conf/extra/httpd-dolibarr.conf" >> /etc/httpd/conf/httpd.conf

systemctl restart httpd.service

After that, I wanted to open my http://<hostname>/dolibarr and it worked out quite well. The build in installation routine started and I was able to click to the next page to check the system.
Almost all went well but it took me hours to figure out why the installation routine complained about the conf.php file. It had the right permissions (u+rw) but the php built in is_writable is returning false for this file.

It wasn't a running selinux, it wasn't a wrong configured php open_basedir or php safemode. It really turned out, that apache http refuesed to allow writing to a file outside than the configured home path of /srv/http.
Even a softlink created in /srv/http linking to /usr/share/webapps/dolibarr was not working.
What was working is to mv /usr/share/webapps/dolibarr /srv/http and to adapt the httpd-dolibarr.conf.

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Increase privacy, cleanup Posts and FileInfo table as well as local disk on your GPLv2 Mattermost server

I am happy to announce a free as in freedome tool for increasing the privacy of your open source mattermost server.

It is called mattermost housekeeping and comes as a full blown cronjob/systemd service.

It is easy to install and cleanes up your database as well as your file system.

It is highly configurable but the default values are good enough to use it right away.

Enjoy it!

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Zabbix: Required parameter $sql_parts follows optional parameter $table_alias

We are running our monitoring solution zabbix on an arch linux system. Arch linux tends to be "up to date" since it philosophie is "patch current code base, not legacy".

I've updated the monitoring system and with that, the php version jumped from 7.4.x to 8.0.x.

After that, a lot of "widgets" (boxes) in the zabbix frontend displayed me a lot of the following error.

Required parameter $sql_parts follows optional parameter $table_alias [zabbix.php:22 → require_once() → ZBase->run() → CSettingsHelper::getGlobal() → CSettingsHelper::loadParams() → API::getApiService() → CRegistryFactory->getObject() → CApiService->__construct() → CApiService->pk() → CApiService->getTableSchema() → CAutoloader->loadClass() → require() in include/classes/core/CAutoloader.php:77]

I've researched it and found that the error exists in the DB.php class. I've opened the issue Ticket ZBX-18984 and created the pull request 39 on the github source code. Hopefully, this fix will make it quickly into the code. I've added a git patch file to the issue. You can download and apply it on your system.

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