By default Ubuntu SSH root login is disabled and root password has not been set. However, many system administrators prefer to work as root to avoid having to use “sudo” for almost every command and enter passwords over and over again. To allow root login over SSH we first need to set the root password…
Although OpenLiteSpeed (OLS) can work well with Redis or Memcached for object caching, it is recommended to use LiteSpeed Memcached (LSMCD), which was developed specifically for OLS and guarantees the best performance. LSMCD is unfortunately not available as a package for Ubuntu/Debian nor for CentOS/RHEL and thus will have to be compiled and installed manually….
Migrating a PowerDNS slave server with a new IP address can be tricky, so proper preparation is essential. Update the System and Install Required Packages Create a MySQL Database and User for PowerDNS Disable systemd-resolved and Configure Custom DNS Install and Configure PowerDNS You should see the PowerDNS service running. You should see the UDP…
To send mail messages from a Linux server, you need to install an MTA to take care of this task. If you don’t want to use a full MTA like Postfix or Sendmail, sSMTP is a good lightweight alternative that is easy to install and configure. However, you do need a relay SMTP server to…
ZFS on Linux is without a doubt one of the most robust and powerful file systems available today. However, despite its high reliability, unexpected problems can occur quickly, especially with the underlying hardware. It is important that any error is immediately noticed and reported to the responsible system administrator, who can then intervene in time…
A checksum is a string of numbers and letters used to verify that a copy of a file is identical to the original. For example, a binary file (especially a software program that has been downloaded) can be checked for errors before it is installed. If you know the checksum of an original file, you…
By default the mdadm will monitor all MD (multi-disk) arrays on your system and will send a message to the root user whenever a problem occurs. Obviously, we want these messages to be sent by email to the system administrator, so we need a MTA (Message Transfer Agent) to send the mail from our system…
By default, a new LXD container is assigned a dynamic IPv4 address by the internal LXD DHCP server. However, in many cases it is necessary to assign a static IP address, for example to make a web server available on a separate container behind a proxy server running on another container on the same host,…
If you are running Nextcloud behind a Nginx proxy server, you will need to change the maximum file size for uploads which by default is only 1MB on Nginx. You can use the “client_max_body_size” directive to set the required file size for uploading. This directive can be set in the http, server or location context….
Modifying PHP settings is a common task when setting up a PHP-based website. Most of the settings in OpenLiteSpeed can be configured with the Web Admin Console, but unfortunately this does not apply to the PHP settings. Although it is possible to add this functionality to the Web Admin Console with individual settings per virtual…
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