MYSQL

Reset MYSQL root password – Linux

Reset MYSQL root password – Linux Log on to your Linux machine as the root user. The steps involved in resetting the MySQL root password are to stop the MySQL server, restart it without the permissions active so you can log into MySQL as root without a password, set a new password, and then restart […]

UNIX

UNIX Boot Mode – Run Levels

UNIX Boot Mode – Run Levels Runlevel “3” will boot to text or console mode and “5” will boot to the graphical login mode ( “4” for slackware) Runlevel Scripts Directory (Red Hat/Fedora Core) State 0 /etc/rc.d/rc0.d/ shutdown/halt system 1 /etc/rc.d/rc1.d/ Single user mode 2 /etc/rc.d/rc2.d/ Multiuser with no network services exported 3 /etc/rc.d/rc3.d/ Default […]

Datacentre

MPO Connector – Ready for business

Improved design and engineering efforts make the interface a strong asset, not a weak link. As the industry deploys 40-Gbit/sec optical networks and moves ahead to 100-Gbit/sec data rates, service providers and data center managers may question whether the multi-fiber push-on (MPO) connector can perform reliably at those speeds. They saw the first-generation MPO as […]

Datacentre

SMP – Symmetric Multiprocessing

In computing, symmetric multiprocessing or SMP involves a multiprocessor computer hardware architecture where two or more identical processors are connected to a single shared main memory and are controlled by a single OS instance. Most common multiprocessor systems today use an SMP architecture. In the case of multi-core processors, the SMP architecture applies to the […]

Datacentre

DWDM – What is DWDM?

DWDM – What is DWDM? Short for Dense Wavelength Division Multiplexing, an optical technology used to increase bandwidth over existing fiber optic backbones. DWDM works by combining and transmitting multiple signals simultaneously at different wavelengths on the same fiber. In effect, one fiber is transformed into multiple virtual fibers. So, if you were to multiplex […]

Mac OSX

Screen shot Mac – Take a screen shot on your mac

Screen Shot Mac – Take a screen shot on your mac To capture the entire desktop, press Command-Shift-3. The screen shot will be automatically saved as a PNG file on your desktop. To copy the entire desktop, press Command-Control-Shift-3. The screen shot will be placed on your clipboard for you to paste into another program. […]

Solaris UNIX

ÔªøSolaris NIC speed and duplex settings

ÔªøSolaris NIC speed and duplex settings Setting NIC speed and duplex Solaris is often unable to correctly auto-negotiate duplex settings with a link partner (e.g. switch), especially when the switch is set to 100Mbit full-duplex. You can force the NIC into 100Mbit full-duplex by disabling auto-negotiation and 100Mbit half-duplex capability. Example with hme0: 1. Make […]