[paypal_donation_button] In the following post I am going to describe how to create a custom docker image that contains the following: – Glassfish Application Server – Java JDK 1.8 – A custom deployed EJB 3.1 Application In connection with this a Postgres docker image from which we start a container with a certain database name… Read More »
Docker is a nice low-cost virtualization solution that is more and more popular. A very nice use case is to use it to create images of enterprise systems, images that can be used for testing without having to bother to delete databases and reinitialize testing environment. You just simply have to fire up another set… Read More »
There are lots of expensive backup tools that can be used to back-up an enterprise environment. HP and IBM are leaders of this market but the costs can go very high quickly. As an alternative one can choose some open-source backup suites that are on par with the commercial ones. Bacula Bacula is a very… Read More »
After seting up Security Onion as my home data center IDS (see https://blog.voina.it/data-center-ids-solution-using-security-onion/) I started to integrate monitoring of other resources to it. The first idea was to add the monitoring of my EdgeMax routers. Security Onion has a syslog-ng service that is able to receive client syslog data. Then we can visualize this data… Read More »
An enterprise environment has to be monitored for external threats. There are a lot of very expensive IDS (Intrusion Detection System) that do this for you but you can set up in a production environment a very good solution for zero cost. The strength of an IDS is given by the IDS threats database, a… Read More »
Sometimes we need to find specific things in application vast logs, sometimes 10 or 20 rotated logs each hundred of MBs each. For a quick search without using some specialized log viewer we can use the very powerful bash text processing commands. Problem: We have 10 log files each 100MB and we need to find… Read More »
Configurations of a Windows Fail Over Cluster can be done entirely from the GUI but as we know this is valid for the simple setup. The GUI is limited to the easy cases, not for more uncommon cases. I already covered the case of the Active Directory Detached Cluster that can be created only using… Read More »
After connecting my two sites using IPSEC see ipsec site-to-site with virtual tunnel interface/ it is easy to ssh to the remote site and OpenVPN see OpenVPN site to site Let us go a step further and activate also remote desktop. I want to be able to connect from my Linux machines but also from… Read More »
Because the number of my systems increased moving all my stuff to a rack was the right decision to avoid cable spaghetti and administration hell. But when you have a rack you need to have an administration console for it. Looking on the market (the deals market) the cheapest console I could find was some… Read More »
I was relocating my servers in a new rack and configuration and decided to put all my ILO ports to a different router with no DHCP. Obviously I ended up with some fake IP6 address defaulted to the ILO device. To make the changes to ILO without a server reboot we have the nice hponcfg… Read More »