Blog posts

2017

[Solved] LXC: not authorized to change the password

1 minute read

Published:

This problem occurs especially when LXC Containers are run on a host machine with CentOS distribution. When we want to create an user inside the container, we get an error which says ..... is not authorized to change the password of <user_name>. Read more

Libvirt: In a Nutshell

2 minute read

Published:

In one of the previous posts, we discussed about lightweight virtualization solutions and more specifically, Linux Containers aka. LXC. Although, LXC has its own management tools that are shipped with the package, there are other APIs and virtual machine managers which can be used to manage various hypervisors and container systems. In this post, we discuss about Libvirt, a widely popular open source virtual machine management API. Read more

Cgroups: In a Nutshell

2 minute read

Published:

Cgroups is a Linux kernel feature to limit, account and isolate resource usage of process groups. Cgroups allow you to allocate resources—such as CPU time, system memory, network bandwidth, or combinations of these resources—among user-defined groups of tasks (processes) running on a system. Read more

Kubernetes Cluster on CentOS 7

8 minute read

Published:

This is a thorough tutorial on setting up Kubernetes cluster on CentOS 7 servers. This is a step-by-step tutorial which also discusses potential problems that may be faced and how to solve them. Read more

2015

2014

LXC: In a Nutshell

2 minute read

Published:

Before the emergence of container technologies like Docker and Rkt, LXC was one of the main container technology that was being in use. This post discusses LXC in a nutshell. Learn more about LXC, its architecture and components. Read more