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Following my guide Open Virtuozzo [OpenVZ] installation manual for CentOS/RHEL, In this guide, I will teach you How to add a ploop device to an existing OpenVZ container. Requirements: A CentOS/RHEL machine installed with OpenVZ. Let’s Begin: Apart from the creation of the container_id.mount and container_id.umount files, where ever you see $VE_ID , replace it […]
What is OpenVZ?
OpenVZ (Open Virtuozzo) is an operating system-level virtualization technology based on the Linux kernel and operating system.
OpenVZ allows a physical server to run multiple isolated operating system instances, called containers, virtual private servers (VPSs),
or virtual environments (VEs).
OpenVZ is similar to FreeBSD jails and Solaris Containers.
Requirements: A Linux machine connected to the internet. Optional Requirement: A Linux machine running Nagios server (needed for running checks) What is NRPE? NRPE stands for Nagios Remote Plugin Executor. It’s a Nagios agent that allows remote system monitoring using scripts that are hosted on the remote systems. It allows for monitoring of resources such […]
Recently, a serious vulnerability has been discovered in the very popular OpenSSL cryptographic software library known as the heartbleed bug. This weakness allows a malicious user to steal information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet. Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), are cryptographic […]
In this article we’re teach you how to Install and Configure Cacti on CentOS/RHEL 6. Some info from Wikipedia: Cacti is an open-source, web-based network monitoring and graphing tool designed as a front-end application for the open-source, industry-standard data logging tool RRDtool. Cacti allows a user to poll services at predetermined intervals and graph the […]
This article is part 3 in a series of 3 articles regarding 18 Linux system monitoring tools you should know.
In this article we’re going to cover some built-in system monitoring tools as well as some free add-on tools
which will make your life easier when troubleshooting issues regarding Networking in your server.
This article is part 2 in a series of 3 articles regarding 18 Linux system monitoring tools you should know.
In this article we’re going to cover some built-in system monitoring tools as well as some free add-on tools which will make your life easier when troubleshooting issues regarding System.
