Plesk Auto-Installer (ai.exe) execution pop-up and close preventing any further action on Windows Server 2008. UAC (User Account Control) must be disabled in order to install Plesk. To disable UAC, go to : – Control Panel > User Accounts > Change User Account Control settings
Chipset driver for Windows Server on HP Proliant DL160 might appear as “Unknown device” in the Device Manager and listed as : ACPI\HPQ000B\0 ACPI\HPQ000B *HPQ000B The proper driver on HP Web site will be listed as : HP Proliant Management Controller Driver (Device ID: HPQ000B)
Here is an easy way to either speed up or slow down the RAID re-synchronization speed rate on Linux. There is many reason why you would do that. Leaving your array rebuilding at full speed might dramatically slow down your server. Set the minimum synchronization speed : echo 102400 > /proc/sys/dev/raid/speed_limit_min Set the maximum synchronization speed… Read More »
Most of low end motherboard will have IRQ/Call Trace issues on Linux. To resolve this, you might to force irqpoll. To achieve that, edit the grub config : gksudo gedit /boot/grub/menu.lst And then, add “acpi=force irqpoll”: defoptions=quiet splash acpi=force irqpoll Update Grub : sudo update-grub If you are using grub2 : gksudo gedit /etc/default/grub And… Read More »
The easiest way of disabling ICMP echo request on Linux is doing it on the kernel level. To disable ICMP immediately on a running system, simply enter the following command : echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all This command will not survive to the next reboot. To make it permanent, edit : vi /etc/sysctl.conf And add :… Read More »
Here is a quick how to create a dummy file for a specific size under Linux/Unix : dd if=/dev/zero of=<file_name> bs=<size_in_bytes> count=1 So assuming you want to create a file named “100mb.bin” having 100 Mb size : dd if=/dev/zero of=100mb.bin bs=104857600 count=1
If you setup OpenVPN to be in bridge (layer2) mode instead using NAT/routing (layer3) and then restart the server to make the change effective, you probably noticed the following error message on the Status Overview page repeatedly : service failed to start due to unresolved dependencies: set([‘bridge’]) This is because there is no existing bridge… Read More »
You might encountered the following message after creating a bridge interface and try to bring it up on RHEL/CentOS Linux : ifup br0 Device br0 does not seem to be present, delaying initialization. The common error in such case is usually because you mistype the ” TYPE= ” parameter, bridge must start with a… Read More »
A bridge interface is actually a virtual interface handled by a config file on your Linux system. Creating a bridge is quite simple, just follow those steps and you’re all set! 1. Create the bridge interface configuration file : vi /etc/sysconfig/network-scripts/ifcfg-br0 Add the the following parameters : DEVICE=br0 TYPE=Bridge BOOTPROTO=static ONBOOT=yes STP=on IPADDR= NETMASK= GATEWAY=… Read More »
On the latest vpopmail release, there is a bug with the Web interface that prevent creating a catch all mail account for non-existent recipients. When pressing the catch-all button, a blank page is returned. Here is the steps to create the catch-all manually instead of using the WebUI. This example assume that your domain name… Read More »