Apachebench Bench Marking – How Fast is my Webpage? Before you deploy your website for the masses, you may want to performance tune it to make it run faster and serve more users. A simple tool that you can use…
Uptime vs Database Backups Backups of your database can be an enemy to your system uptime. Doing a filesystem dump of your database tablespace files will require that it occur while your database is down so that you don’t have…
Let’s imagine that you had added a new physical disk to your Linux box and you need to get it setup to use inside your Linux operating system. This can be done pretty quickly. You can add the filesystem directly…
Booting CentOS in Single User Mode When you have an issue where CentOS will no longer boot, you have to be able to get into the operating system to resolve the problem. I have had to boot into single user…
Master Slave MySQL Replication Summary Master / Slave replication in MySQL is a great way to store an exact replica of your database on another machine in another location as part of a disaster recovery plan. Before setting up Master…
Once you have your VMware private cloud system all set up, you will likely want to convert any physical machines that you have to virtual machines on your cloud system. To help you with this task, VMware created their VMware…
Successful P2V Conversion I use the VMware vCenter Converter Standalone frequently to migrate physical machines to my VMware cloud. One error that I get frequently after a successful conversion of CentOS 5 system is: Kernel Panic Using VMware vCenter Converter…
Control Ssh Login by Time Sometimes, we want to control the time-frame that a user can login to a machine with ssh. In these cases, we need to configure Sshd to Allow Login by Time Schedule. Create User In our…
Nagios Remote Plugins with NRPE Two weeks ago, we setup Nagios in the article: Monitoring Your Systems with Nagios and last week, we defined Nagios hosts and services in the article: Configure Nagios Hosts and Services. This week, we will…
Now that you have Nagios installed (See last week’s article: “Monitoring Your Systems with Nagios” ), you are ready to begin monitoring services such as ssh, websites, and other services. So that brings us to the purpose of this…
Once you have a system that becomes important to your organization, you will want to begin to monitor it to ensure that it is up and running and to be able to measure and create uptime reports for those services…