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In this tutorial we will go over how to publish an image you have created to the public docker hub. You will need to create a docker hub account to continue. Login to your Docker Hub account on your docker host. Simply execute the following and input your credentials: docker login Create Repository One of […]

The recommended way to create images for sharing is from a docker file. A docker file is essentially a script which can recreate the building of your image. We will go over how to create one for nginx on CentOS in this tutorial. Creating the docker file. It is recommended that each docker file is […]

Run the container so that it can be reached on port 80 The ports a container can be accessed on are determined when the container is initially ran with the -p flag. The following command will run our image created in the previous lab and forward traffic on port 8080 of our host to the […]

In this tutorial we will go over how to make changes to a running container while attached, then saving our progress. This will result in a new deployable image. Install the nginx server to your container and commit the changes. First attach to the running CentOS container, like we did in the last tutorial. docker […]

Connect to your running container Now that we have a list of running containers, we can use this information to connect. When connecting to a container, you will have different types of interfaces depending on what software the container is running. Most base OS containers, such as Debian or CentOS, will give you a bash […]

In this tutorial we will go over how to search and pull down an existing docker image from the docker hub to run it on your server or local system. Prerequisites You will need to have docker running and installed on your system. Searching the Docker Hub You can search the Docker Hub for pre […]

The purpose of this document is to explain how to install Kamailio and setup your development environment to make it easier to start configuring Kamailio to fit your requirements.  In this document I will explain how to install Kamailio on CentOS 6.6 and configuring VIM to make it easier to do development. Assumptions: MySQL is […]

Load balancing traffic with Kamailio Note: We assume you have Asterisk/Freeswitch setup to handle inbound traffic from Kamailio In part 3 of our Kamailio series we will explain how to load balance calls from users between several different media servers. For this part in the series we will use the “dispatcher” module. The dispatcher module provides […]

The goal of this document is to explain how to get Kamailio to route traffic to the carrier with the least cost. This is part 2 in our Kamailio series.  Getting Started You don’t need much for this tutorial. All you’ll need is 2 carrier endpoints and their rates for calling a certain area code. […]