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Monitoring hosts with CollectD, InfluxDB and Grafana

In this article we will install a monitoring solution on CentOS 7 consisting of CollectD, InfluxDB and Grafana. The first step is to install CollectD: yum -y install epel-release yum -y install collectd At the time of writing, this resulted

jansipke 2015-11-262021-09-12 Programming 13 Comments Read more

Linux network auto shutdown from APC UPS

The APC Smart-UPS series of UPS devices allows you to power servers and switches when there is a power failure in the grid. When the UPS is running on batteries, you want your servers to be notified and properly shutdown.

jansipke 2015-11-052021-09-12 Hardware No Comments Read more

Creating a CentOS VM image for OpenStack

When you install OpenStack, you will get a very simple Linux VM image (Cirros) to test your installation. This works fine for testing purposes, but you will probably want to add some VM images for CentOS or Ubuntu. Although there

jansipke 2014-01-242021-09-12 Cloud Computing 5 Comments Read more

Installing latest version of Puppet on CentOS

The latest version of Puppet can be installed on CentOS by adding the Puppetlabs repository and then installing the official Puppet package: rpm -Uvh http://yum.puppetlabs.com/el/6/products/i386/puppetlabs-release-6-7.noarch.rpm yum install puppet This will install the latest official version of Puppet. Check the version

jansipke 2013-09-122021-09-12 Cloud Computing No Comments Read more

Installing a Storm cluster on CentOS hosts

Storm is a distributed, realtime computation system to reliably process unbounded streams of data. The following picture shows how data is processed in Storm: This tutorial will show you how to install Storm on a cluster of CentOS hosts. A

jansipke 2013-01-302021-09-12 Cloud Computing, Programming 8 Comments Read more

Installing Joyent command line tools on CentOS

A set of command line tools is available for the Joyent cloud computing platform which allows you to e.g. list images and create virtual machines. The installation of this set is a bit tricky on CentOS as it requires node.js

jansipke 2013-01-082021-09-12 Cloud Computing 2 Comments Read more

Installing Rackspace command line tools on CentOS

A set of command line tools is available for the Rackspace cloud computing platform which allows you to e.g. list images and create virtual machines. The installation of this set can be achieved with the following commands: yum install python-setuptools

jansipke 2013-01-082021-09-12 Cloud Computing No Comments Read more

Installing Azure command line tools on CentOS

A set of command line tools is available for the Windows Azure platform which allows you to e.g. list images and create virtual machines. The installation of this set is a bit tricky on CentOS as it requires node.js and

jansipke 2013-01-082021-09-12 Cloud Computing No Comments Read more

Installing Apache Libcloud on CentOS

Apache Libcloud is a standard Python library that abstracts away differences among multiple cloud provider APIs. At the moment it can be used to manage four different kinds of cloud services: servers, storage, loadbalancers and DNS. Here are the steps

jansipke 2012-12-272021-09-12 Cloud Computing, Programming No Comments Read more

Increasing CentOS LVM disk size on XenServer

The disk size of a CentOS virtual machine on XenServer can be increased with the following steps. The current VM contains one disk of 8 GB which is divided into a boot partition and an LVM partition: # fdisk -l

jansipke 2012-12-072021-09-12 Storage 18 Comments Read more
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