Linux

Riz Khan on November 28th, 2010

When its comes to optimizing and tuning Mysql the most important aspect is to identify the inefficient/slow queries. So the question arises how we can find the queries which are taking long time to execute so we can optimize/improve them to improve the overall performance. Mysql helps us with its built in support for logging […]

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Riz Khan on November 20th, 2010

Munin is a networked resource monitoring tool that can help analyze resource  trends and usage. It can monitor a wide variety of servers and equipment e.g.  servers, vpss, networks, applications etc. Munin provides very useful graphs with resource usage listed for different time periods like , daily , weekly and monthly graphs. Installation of Munin […]

Continue reading about How To : Install munin on cPanel servers and vpss

Many times if you find apache processes dying in the top process list or apache failing to start completely then one of the reasons could be a log file larger than 2Gb , which is indicated by the below error in the apache error logs : child pid XXXX exit signal File size limit exceeded […]

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Riz Khan on September 28th, 2010

When we talk about server security, firewall is an important component.  For hosting server or other servers in general when it comes to free firewalls, there are two popular combinations. One is APF/BFD ( Advanced Policy Firewall/Brute Force Detection) and second is CSF/LFD ( Config Server Firewall / Login Failure Deamon ). The bfd or […]

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Riz Khan on September 22nd, 2010

Secure Shell or SSH is a network protocol that allows data to be exchanged using a secure channel between two networked devices. The two major versions of this protocol are referred to as SSH1 and SSH2. It is used primarily on Linux and Unix based systems to access shell accounts.  It was designed as a […]

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Riz Khan on September 15th, 2010

Many times you may notice a time drift problem on the server. It is common with some of the AMD server series as well.  In most cases its impact is not very high and it can be controlled by setting up a cron to run each minute to make sure the time remains close to […]

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