Posted by : gon in (Sistema Operativo, Software Libre)
Virtualbox as a sysadmin tool
Tagged Under : administrador de sistemas, servicio, servicios, virtualbox, virtualización, vrdp
Besides the port fordwarding, VirtualBox has another very useful feature for system administrators: running a virtual machine WITHOUT graphical interface.
We suppose this situation: we have a virtualized server (it doesn’t matter if it’s linux, Windows, Solaris,…), must run every time you start the system and must also consume less resources as possible.
The solution seems simple. VirtualBox brings commands: vboxsdl and vboxheadless. Both allow to run a virtual machine without open virtual machines manager.
vboxsdl run the virtualized system in a window graphical interface, in fact is the same as running the system from the virtual machines manager, but if we call it directly, we avoid having to resort to this.
vboxsdl -startvm "VM_NAME"
vboxheadless run virtualised system, but without raising any graphical interface, making it possible to boot only with the console. This is especially useful for servers that dispenses with the Xserver.
vboxheadless -startvm "VM_NAME"
If we can not see the virtual machine, how would you control?
Here I have a couple of tips used in Windows XP as host, Windows 2000 Server as guest, but the same should be applied in a Linux and other systems.
Posted by : gon in (Software Libre)
VirtualBox! You save my day
Tagged Under : .net, sql server, virtualbox, virtualización
My first deployment attempt with my fingerprint reader application was not very good.
First, I was informed late about the version that ran the server: SQL Server 7. Moreover, it is difficult to go any time to make room for any evidence, even worse to sit quiet coding. The first thing we tried long ago, was to make a backup of the entire database. Assuming Microsoft Management Studio would be enough to connect to the database and create new tables, has been the first thing I thought to do that day.
But as Murphy’s law is always, I found an uncomfortable message, saying Unable to connect to an earlier version of SQL Server lower to 2000 (ie, version 8). Because Management Studio is based on. NET, I doubted that my .NET application could connect. Later, I discovered that I was wrong, but at the time I had no alternative other than to evaluate more solutions.