The Linux platform can do quite a lot of things; it can be just about anything need it to be and function in nearly any form. One of the many areas in which Linux excels is that of storage. With the help of a few constituent pieces, you can have a powerful NAS or cloud storage solution up and running.
For a long time people have been trying to get Android apps running on Linux. After all, it makes a whole lot of sense. Android does use the Linux kernel. So why has it been so hard then?
Kubernetes is the most popular open-source container manager. It’s been officially supported on every cloud platform you’ve ever heard of… with one big exception: Amazon Web Service (AWS). Now, AWS has got on board the Kubernetes bandwagon as well by joining the Cloud Native Computing Foundation (CNCF) as a platinum member.
In this tutorial we’ll refer to a practical example of Linux dd command that can be used by system administrators to migrate or clone a Windows Operating System or a Linux OS from a larger HDD partitioned in MBR or GPT layout style to a smaller SSD. In this excerpt we’ll use as an example a Windows system installed on a hard disk with multiple partitions.
This post is more like a “note to self” for certain TCP parameters which I usually modify (or plan to modify) on production servers.
Some good to know terms:
- Round Trip Time (RTT): It is the time taken by a packet from source machine to reach destination and come back. You can use ICMP ping to get the RTT.
- Latency: The time from the source sending a packet to the destination receiving it. This is often mixed with RTT. Clarify what you are talking about before interpreting anything.
- Bandwidth Delay Product (BDP): It is the amount of data that can be in transit in the network or simply the product of link bandwidth and RTT.
We left our little studio in the Kootenays last July to travel throughout Europe, traveling to discover about new media, spiritual centers, art, design and open source initiative. I decided to go really minimal on the computer gear stuff, so I only packed my Kindle, a camera, an android phone and of course my Raspberry
With Netflix running so many services on Amazon’s Web Services (AWS) cloud, it needs to be able to find those services easily so that it can balance loads and manage failover. The video-streaming specialists have now open sourced Eureka, the software they use to meet that challenge.
Quantum, a core part of the OpenStack project starting with the next Folosm release, aims to allow the software above the stack to control that infrastructure through a well-defined interface – an API that developers can access.
Chef is an open-source systems integration framework built specifically for automating the cloud. No matter how complex the realities of your business, Chef makes it easy to deploy servers and scale applications throughout your entire infrastructure. Because it combines the fundamental elements of configuration management and service oriented architectures with the full power of Ruby, Chef makes it easy to create an elegant, fully automated infrastructure.
Puppet is IT automation software that helps system administrators manage infrastructure throughout its lifecycle, from provisioning and configuration to patch management and compliance. Using Puppet, you can easily automate repetitive tasks, quickly deploy critical applications, and proactively manage change, scaling from 10s of servers to 1000s, on-premise or in the cloud.
Cloonix KVM is an alternative userspace for KVM designed specifically for simple realtime network topology management. The killer feature of Cloonix is a GUI WYSIWYG tool that allows you to drag and drop elements in a network topology. These elements include virtual machines, routers, LAN interfaces and sniffers among others. Networking uses a rewritten slirp userspace library so performance is not great but this is the tradeoff for the convenience of modifying your topology in real time in a graphical way.
It provides an easy to use interface for managing a MailScanner installation. It is used to perform operations such as releasing quarantined messages, bayesian learning, whitelisting and blacklisting addresses, monitoring the health of the services etc. Baruwa is implemented using web 2.0 features (AJAX) where deemed fit, graphing is also implemented on the client side using SVG, Silverlight or VML. Baruwa has full support for i18n, letting you support any language of your choosing.
How do I install and configure SquidGuard – a web filter plugin for Squid to restrict access to domains/URLs based upon access control lists? How do I block porn, gambling, and other web-sites using squid proxy server version 3.x under Debian or Ubuntu Linux server for my school ?
This howto describes setting up an IPSEC VPN for use with the Iphone, Ipad and Mac OSX VPN clients on Centos/RHEL 6. I am using the 5.x branch of Strongswan which is now the mainline actively maintained branch. At the time of writing the 5.x EPEL package was only available in the testing repo.
When talking about PBX setups the most common software package is Asterisk. That’s what’s at work here, rolled up with a bunch of other helpful software in an RPi targeted distro called Incredible PBX. All it takes to get up and running is to partition and burn the image to an SD like any other RPi distro.