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How to Create Remote VM using docker-machine Generic SSH Driver

Using docker, you can package your enterprise application into one self-contained container, which is guaranteed to run on any environment. This makes it easy for both developer and sysadmins to manage the application. If you are an administrator, you don't have to hear this excuse from developer anymore: "But, it works on my dev environment!" [...]


How to Create and Launch LXC Linux Containers with LXC Commands

LXC Containers are a very quick way to create a psuedo virtual environment. In the previous LXC article, we explained how to install and configure LXC linux containers. In this tutorial, we'll explain how to create a new Linux container, start the container, and login to the LXC virtual console to use the new container. [...]


How to Install and Setup LXC Linux Containers on CentOS / RHEL / Ubuntu

LXC stands for Linux Containers. Linux containers are light-weight "virtualization" methods that runs multiple virtual units simultaneously on a single control host on a single Linux kernel. The Linux kernel contains cgroups for resource isolation (CPU, memory, block I/O, network, etc, ), which does not require starting any virtual machines. Cgroups also provides namespace isolation [...]


How to Create ZFS Filesystem with File Compression on Linux

ZFS filesystem is getting a wider recognition on Linux. In ZFS, you can enable compression at the filesystem level. This will store the data in compressed format, which will save lot of disk space. In this article, we'll explain how to create the filesystem from the ZFS storage pool and enable compression on ZFS. This [...]


How to Setup ZFS Filesystem on Linux with zpool Command Examples

ZFS has combined volume manager and filesystem with several advanced features. This is the first part in a series of articles on ZFS. In the article, we'll provide an high level introduction to ZFS, explain how to install ZFS on linux, create a ZFS pool, and several ZFS zpool commands. The following are some of [...]


Introduction to Puppet Configuration files with Examples on Linux

Puppet is used to automate several routine sysadmin configuration tasks. Puppet in an enterprise grade configuration management system. It allows you to define the state of your IT infrastructure. Once it is defined, Puppet will automatically enforce the correct state on an on-going basis. Puppet typically has one server component and multiple agents. You have [...]

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20 Zypper Command Examples to Manage Packages on SUSE Linux

yum is for CentOS and Redhat. apt-get is for Debian and Ubuntu. In the same way, zypper is for SUSE Linux. Zypper is a command line tool for package management in OpenSUSE and SUSE Enterprise Linux platforms. On a high-level, you can manage two different things using zypper command: Manage Packages: Zypper is used to [...]


How to Sync and Start Redhat Cluster to Verify Failover Scenario

In the first part, we explained in detail on how to install and configure 2 Node RedHat Cluster. We covered the following high-level steps in the previous tutorial: Install and start RICCI cluster service Create cluster on active node Add a node to cluster Add fencing to cluster Configure failover domain Add resources to cluster [...]