A network problem [study case]

So the other day i was doing some consulting a problem occur  in a network, causing a failure of inaccessibility to a server created by an application, in other words a client could not connect error type of thing, the client pays a consulter to actually tell him the solution of his problem, so whit that been said, i power on my laptop find some wire to plug in, open a terminal and start the digging (The real values of Ips address have been modified).

First i drop a traceroute to the IP address the client was trying to connect to and found this:

Sistemas Distribuidos basados en Postgresql y Debian GNU/Linux

En esta entrega vamos a configurar dos servidores Postgresql uno como maestro y otro como esclavo la idea es distribuir el esquema de base de datos del servidor maestro a todos los esclavos y así contar con un sistema de alta disponibilidad. El primer paso que debemos hacer es agregar los repositorios backports de Debian squeeze:

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OpenIndiana Installation

OK  so a friend of OA ask me to write  an article about SmartOS, seriously i try but i don’t know what its up whit the  ISO file of that project that wont boot up! i mean i download from this server a file call “latest.iso” it didn’t boot… later on i download another ISO file, an older version this time, the version was (20120726T184637Z). and it didn’t boot up either, so i decided to not leave the things like that and went to a similar project named OpenIndiana, is almost the same thing. BTW i am guessing that my friend want an article about this… because first there is like ahhhhh ZERO documentation, second he has to be focusing on Visualization technology. We are going to make some articles about that but not with SmartOS. Fare well lets start this installation walk trough.

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Probando ext4

root@servidor:/media# mkfs.ext4 /dev/sda3 mke2fs 1.41.12 (17-May-2010) Etiqueta del sistema de ficheros= Tipo de SO: Linux Tamaño del bloque=4096 (bitácora=2) Tamaño del fragmento=4096 (bitácora=2) Stride=0 blocks, Stripe width=0 blocks 14491648 nodos-i, 57962702 bloques 2898135 bloques (5.00%) reservados para el superusuario Primer bloque de datos=0 Número máximo de bloques del sistema de ficheros=0 1769 bloque de grupos … Read more