Sometimes weird things happen when selinux is activated and files are un-tagged or policies are missing. Because I do not want to apply the usual stupid Internet advice: “disable selinux” I am trying to fix it if possible. Two simple steps to alleviate some of the “issues” caused by selinux. STEP 1: Generate SELinux policy… Read More »
This tutorial is part of the effort to deploy a complex business application on a docker swarm and is focused on deploying a swarm accessible secured private registry using letsencrypt certificates. The first step is to create the swarm, see Create and manage a Docker Swarm with Docker CE and register it to Docker Cloud… Read More »
After your environment grows and you add more and more servers at some point the need to have a simple visual monitoring of everything becomes vital. If you throw into this environment a container environment like docker than you have to monitor even more information. After creating a docker swarm see Create and manage a… Read More »
How to execute an arbitrary command on any docker container running in a docker swarm ? There is no way of directly executing a ‘docker exec’ on a container in the swarm. On a swarm we can define stack of services and directly only services are visible. The containers that run the actual service and… Read More »
The new Docker CE makes it easy to deploy and work with Docker Swarm. I will describe how to setup a test 4 node Docker Swarm that will be further used to host a test enterprise application (a post is going to follow with that). STEP 1: First some practical considerations A Docker Swarm is… Read More »
There is a new Docker version released in march see Docker: New Docker release. There are some important changes, but the cool ones are in the experimental mode: – you no longer need docker-machine for lots of stuff – a new way to create Docker swarms – a new docker-compose, version 3 that supports automatic… Read More »
In an early March announcement Docker changed the way new versions are released and also branched it to Docker Community Edition (CE), Docker Enterprise Edition (EE) and Docker Cloud. The new Docker EE has some additional features like Docker Datacenter providing integrated container management and security from development to production. That makes the Docker environment a… Read More »
Having a lot of issues with the blog, especially with the page load time got me thinking that I need to do a change. There are several articles on the internet on how to speed up your WordPress blog. Here is my take on it. STEP 1: Find a good host. Very important to have… Read More »
I tried to pay some bills at my bank ATM and this was the message that was displayed on the ATM: Hard to pay the bills when the ATM is shutting down 🙂 And yes is a Windows XP, the best Windows up to date 🙂 Banks know their safe technology. [paypal_donation_button]
Google puts another nail in the coffin for SHA-1. They already moved from using SHA-1 on their products but there are still a lot of places where is used by default. In a post on the Google Online Security Blog Announcing the first SHA1 collision Google researchers claim that they have a good way of… Read More »