This looks nice for #baremetal
What is Metaleuca?
Using Metaleuca, users can communicate with Cobbler to self-provision a group of bare-metal machines to boot up with new, fresh OS images. The main appeal of Metaleuca is that it allows users to manage the bare-metal machines like EC2’s virtual instances via the command-lines that feel much like ec2-tools, or euca2ools.
Metaleuca Command-Line Tools
Metaleuca consists of a set of command-lines that mirror some of the command-lines in ec2-tool or euca2ools. The list below shows a number of the core command-lines used in Metaleuca:
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HAProxy is an open source load balancer/reverse proxy that can provide high availability for your network services. While generally used for web services, it can also be used to provide more reliability for services such as SMTP and terminal services. In addition we can combine it with the Keepalived package to allow high availability/failover for the HAProxy server itself. HAProxy plus Keepalived can provide a good solution for high availability at a very low cost in comparison to proprietary hardware based load balancers.
In this example I will configure 2 HAProxy/Keepalived servers (lb1/lb2) that will direct traffic to 2 Apache web servers (web1/web2). I will not detail the set up of the web servers. Here is a list of the server and IP address configuration scheme:
Configure on both lb1/lb2
First we need to activate the Extra Packages for Enterprise Linux (EPEL)…
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In a previous post I discussed installing the open source VMware tools for Red Hat Enterprise/Scientific/CentOS Linux 6 from a yum package repository provided by VMware. This is in contrast to using the version distributed directly with VMware ESX/ESXi, which with the Linux platform was not provided in an RPM package format. With the upgrade to ESXi 5 the update process for the tools installed from the repository is not very seamless because of some update issues in addition to package changes.
First off, to get the VMware tools packages updated it is important to upgrade to the latest version of Red Hat/Scientific/CentOS Linux 6 due to some issues with the yum version distributed originally with 6.0. VMware has disabled the automatic update due to this issue:
I am using Scientific Linux 6, for Red Hat and CentOS the upgrade process should be similar but most likely will have…
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Since my last day here.