PHP SSH support does not come out of the box yet. The shortest and effortless path to get it working is the following procedure. DISCLAIMER : php-SSH is still beta and not enabled by default. Use only if you know what you’re doing! 1. Install the development components to build the module : apt-get install… Read More »
Running large and high demanding hypervisor connected to SAN storage require jumbo (large MTU) frames to enhance I/O performance to the guests virtual machines. To achieve that, you need to use the command line since vSphere console do not allow to do such thing. 1. Stop all guest virtual machine and put the hypervisor in… Read More »
Using a SSD drive on Windows 7? You better have TRIM enabled for better performance and make your drive last longer. Windows should enable it by default. To check if it’s enabled, run the following command : fsutil behavior query DisableDeleteNotify If returned value is ” 0 “, this mean TRIM is enabled. If ”… Read More »
You may notice those symptoms after updating SpamAssassin : – High CPU usage – spamd keep flipping between “running” and “zombie” state This probably mean your SpamAssassin installation is missing rule set configuration files. To resolve this issue, simply try running : sa-update Since this should have been automatically done at the installation or upgrade,… Read More »
This tutorial is about how to replace a failed member of a Linux software RAID-1 array. You can monitor the status of your software RAID array through mdadm with the following command : cat /proc/mdstat This is the kind of output you’ll get in case of the secondary drive is either dead or no longer… Read More »
You may experience this error shown on “dmesg” or system logs (/var/log/messages) : IPv6 addrconf: prefix with wrong length 126 This actually indicate a device on your network trying to broadcast IPv6 information that dosen’t match your network configuration. To get rid and disable this, simply run the following commands as root : echo 0… Read More »
Since there is no longer any shortcut to start Internet Explorer 9 without addons, in safe mode on Windows 7, here is how to achieve that : The first, and quick method would be to simply type the following command into the search bar located at the bottom of the start menu : iexplore -extoff… Read More »
You may experience this issue trying to log into a computer which is a member of a Active Directory network : No Logon Servers Available to service the Logon request. This issue may actually resolved by removing the computer from the domain, reboot and join the domain again.
This tutorial is about automatically login a user on domain with on a Windows 7 workstation. 1. Open the registry editor : Start > Run > regedit 2. Browse to : HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon 3. Turn on the auto logon key : AutoAdminLogon 1 4. Set… Read More »
Having issues and downtime after installing latest updates using “yum update” is always a possibility. This is why having a development environment is so much important when you are running a mission critical infrastructure. However, there is an intermediate solution : using the rollback feature included in Yum. Note this option is actually not enabled… Read More »