May 29, 2016

Installing Windows 10 on a GPT disk with legacy BIOS and GRUB2

In my first entry in this blog, when I set up the hard disk partitions it was ready to install Windows. However, since then I had not returned to deal with this issue and now is the time to take it up.

Since Windows 8, the Windows installer is able to install Windows on GPT partitioned disks, as long as the computer supports the UEFI mode.

In this post I intend to show a method to work around this limitation of Windows installer. I'll install Windows 10 on a computer with a traditional BIOS and the hard disk partitions with GPT style.

Jan 19, 2014

Cloning FreeBSD Jails with ZFS as a method for provisioning Oracle 11g R2

A requirement more and more pressing in the current data centers is the ability to deploy applications and services quickly, almost immediately.

It is becoming increasingly frequent that the system administrators and DBAs maintain different versions of the same service or application to be used as production environment, testing, development, reporting.

In this post I will show, as the combination of ZFS and FreeBSD Jails can simplify these tasks to the point that are almost trivial.

Sep 4, 2013

Install Oracle 11g Release 2 on FreeBSD 9

We Continue providing functionality to our Jail Debian GNU / Linux just installed. For it I decided to install Oracle 11gR2 for Linux, because it is one of the most demanding software packages that can be found, I think it's a good way to explore the limits of the proposed solution.

Another motivation is the fact that in the FreeBSD HandBook  the chapter  dedicated to installing Oracle is referred to version  Oracle 8.0.5, which is quite old, this circumstance stimulated my curiosity.

For failing be certified by Oracle, this platform is not suitable for a production environment, which does not diminish the utility as a test environment and even a development environment for small projects, depends on the risk you want to take.

The advantages of using FreeBSD as an infrastructure for virtualized environments are:
  1. ZFS File System.
  2. Virtual network stack.
  3. Network security with pf.
  4. Dtrace performance analysis.
The advantages of using Debian GNU/Linux  inside a Jail are:
  1. Debian GNU  is one of the most reliable Linux distribution and have a very predictable release cycle.
  2. Using a complete distribution saves us a lot of work when you install Oracle.
  3. Provide updated technical documentation.
As I am not in favor of installing a GUI on servers, especially if they have to support a database engine as heavy as it is Oracle, I will perform a text mode installation using a response file for the Oracle Installer.

Aug 13, 2013

Install Debian GNU/Linux on a FreeBSD Jail with ZFS

Continuing with the process of configuring a  newly installed FreeBSD system to get a production environment with hosted services in Jails. 

We will continue working with Debian and Linux-based distributions that provide the right Userland to meet the goal, not fully achieved, of executing  Linux binaries on FreeBSD Jail.

Jul 19, 2013

Install Debian GNU/kFreeBSD on a FreeBSD Jail with ZFS

Once we have installed and updated a FreeBSD 9 system, the next step is to provide it with apps to make it a useful system.

In recent years, I have been working on Solaris 10 systems, where services had in production were encapsulated in Solaris Containers. Given my recent interest in FreeBSD seems natural to attempt to play a similar execution environment, which gave me such good results in the past. 

Moreover, it seems interesting the possibility to include the ability to run Linux applications and having a jail specifically intended for that purpose. 

In this case, instead of installing a Jail with the  FreeBSD native  userland, we will install Debian GNU/kFreeBSD that provides an alternative userland for FreeBSD 9.

Jul 15, 2013

Updating FreeBSD 9 with freebsd-update and beadm

In my previous post I described how Install FreeBSD 9 with root on ZFS with support for beadm, now my purpose is to show the advantages of this configuration to deal with tasks so committed like operating system updates. 

Jul 13, 2013

Install FreeBSD 9 with root on ZFS optimized for 4K sectors and support for beadm

In the last 6 years I have worked with   Solaris 10 SPARC systems  - M3000 , M4000 , V1280 - where I used ZFS as filesystem.
For a while I looked for solutions on x64 architecture servers similar in performance and features of these systems.

Of course the obvious answer is to opt for environments under Solaris 11 for x64; technologically is a good solution -not perfect- but given the apparent corporate culture change that has occurred after the acquisition of Sun by Oracle, never hurts to evaluate alternatives

Btrfs in Linux seems an option to keep in mind, however it suffers , in my opinion of a certain technological immaturity that makes not advisable its use, at the moment, for deployment in production environments.
The solution presented in this post is  today, I think of the most interesting, because combines an open source OS, with an undeniable technological maturity and probably the best filesystem today; ZFS.