Windows : Add entire subnet in a batch

Adding a bunch of IP to windows through the GUI is a nightmare! Fortunately, you can enter a single command that will add them in a second. Simply open the command prompt and type the following command : FOR /L %I IN (<IP_START>,1,<IP_END>) DO netsh interface ip add address “Local Area Connection” <IP_SUBNET>.%I <IP_NETMASK> Let’s… Read More »

Linux : ip_conntrack: table full, dropping packet

Having slow network performances, packet loss and noticed this message in the logs or dmesg output under heavy load on your Linux box? ip_conntrack: table full, dropping packet This is because you reach the limit set for connection tracking. To display the current usage, use the following command : wc -l /proc/net/ip_conntrack In such case,… Read More »

Linux : How to create swap area on a live system

This article is about how to create swap space on a live RHEL/CentOS Linux system. However you can still follow that procedure in case you messed up your filesystem and swap is now non-existent (e.g.: swap show 0M). First, use fdisk to edit the partition table and create a partition (this step might be skipped… Read More »

Linux : Installing R1Soft backup agent from YUM repo

Installing R1Soft agent using YUM is pretty straight forward. Simply do the following steps. 1. Edit the R1Soft YUM repo file : /etc/yum.repos.d/r1soft.repo 2. Append the following : [r1soft] name=R1Soft Repository Server baseurl=http://repo.r1soft.com/yum/stable/$basearch/ enabled=1 gpgcheck=0 3. Install the agent : yum install r1soft-cdp-enterprise-agent 4. MISC : You might see the following output message once the… Read More »

Linux : How to install DirectAdmin

Here is a quick how to install DirectAdmin under your Linux/BSD server. Unlike other control panels, DA support various operating systems such as CentOS/RHEL, FreeBSD, Debian and Ubuntu. Make sure your system is a fresh install and up to date before starting the process. If you are performing the installation remotely, I strongly recommend you… Read More »

Linux : How to install cPanel

Here is the easy way to install cPanel on your RHEL/CentOS Linux server. Please note that cPanel require a fresh OS install. The installation might take around 30 minutes depending on your hardware. If you are performing the installation remotely, I strongly suggest that you run the installer under a “screen” session to avoid any… Read More »

Windows : Plesk 11 setup is missing an installation prerequisite

Plesk 11 for Windows install might return the following error : MSI: Error! Setup is missing an installation prerequisite: -Microsoft SQL Server 2012 System CLR Types. To continue, install SQL Server 2012 System CLR Types from http://go.microsoft.com/fwlink/?LinkID=116207 and then run the Setup operation again Failed to install ‘C:\ParallelsInstaller\parallels\PANEL-WIN_11.0.9\thirdparty-msi-Windows-any-x86_64\sqlsmo_x64.msi’: Fatal error during installation. (Error code 1603)… Read More »

Windows : Plesk Auto-Installer fail to start

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

Hardware : HP Proliant DL160 chipset driver

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)