Recently while working on some node or instance automation using RightScale I needed to have some extra iptables rules created automatically when a new node booted. Initially I was just trying to do this via iptables commands which I note below but it would never work. After digging through the logs I realized that the…
Earlier today I needed to find the quickest and easiest way to monitor all traffic to and from a specific device on my network. The goal was to see how much bandwidth based on a specific amount of time that the device was using. My initial hope was that I could configure port monitoring on…
Yesterday a colleague at my company was doing some testing with a potential partner and they needed to open a TCP port on one of our development servers so an application could bind to that port. At first I wasn’t sure how I should do this since the port didn’t need to do anything but…
The btmp log keeps track of failed login attempts. I have seen on a default linux setup with logrotate configured where the btmp log is left out of rotation and eventually grows out of hand. So first you want to make sure that the btmp log is rotated using logrotate with the below information. Log…
On initial installation of PostgreSQL typically you will also download and install pgAdmin III on your local PC to assist in Postgres management. The pgAdmin GUI will assist in viewing database information quickly, etc. In one of my installations I was not able to connect to the new Postgres installation via pgAdmin and I was…