After experiencing for years with several small scale UPSes that are mainly used for desktop computers or small offices I decided to up the game. As you may know from the top sticky post this blog is self hosted in a home rack. Adding a proper rack UPS was on the agenda for a long… Read More »
Yes, folks, more and more technology is cripping everywhere in our lives. With this , we can also see more tech failures in our day to day life. Here I give you the bottle return machine from Mega Image stuck in a reboot loop 🙂 Looks like it is running a Tomra Linux.
This is a continuation of the previous post about one liners from https://blog.voina.org/fedora-linux-server-useful-one-liners/ Updating to a new version – extra commands In case the usual one liner does not work or there are some issues related to the upgrade, there are some additional things that can be done. Make sure to have latest packages of… Read More »
While running the blog server on Fedora Linux I found out that some one liners are either very important to be executed once or very useful periodically. Here are some of my most used one-liners Updating packages Note that I allow dnf to skip broken packages and delete if necessary. Sometimes if using other than… Read More »
Apache ActiveMQ® is the most popular open source, multi-protocol, Java-based message broker. It is widely used in a lot of multi service application environments where we need to pass messages between services. All this type of environments (kubernets, docker swarm etc. ) are used to be able to monitor and control the component services using… Read More »
In a high load system deployed on Jboss Application Server the following optimizations for data source pool resources may be needed. 1. Change the minimum and maximum pool size of a data source (MyDS). This will ensure that we always have a minimum number of allocated connections and also we set a threshold to the… Read More »
Often times I find trying to start Edge on an old data-center jump station and I just click and nothing happens. This is the direct result of an Edge process that went zombie. A quick way to kill an Edge session that is acting as a zombie and will not allow you to start a… Read More »
A common mistake is to set the alternatives just for java sdk. This can lead to issues when several java versions are present. Jasper Reports a well knows Java library used to generate ad-hoc pdf reports compiles the report templates and the temporary classes using the default system javac not the javac of the java… Read More »
The magic command is upower, a command that gives you detailed information about the power devices in your laptop/desktop. Enumerate all the power devices Check the details of a power device (battery in this case)
RabbitMQ is a nice message queue server used in lot of networking monitoring appliances and other services. It has a very small footprint and can be integrated with lots of languages and resources. All works well until you get the famous recovery log corrupted error. Usually the issue is caused by disk full or in… Read More »