Linux Articles
Process Monitoring with SupervisorD
The ability to monitor services on a web server is crucial for helping to ensure high availability. Another common process is to have daemon scripts which are designed to continually run for things such as a monitoring job queue. Being able to help prevent failure for such processes is extremely important. SupervisorD SupervisorD is a […]
Docker Container Stacks
Docker is a great tool for defining application environments (containers) and deploying the various containers as a single project. Custom Docker images can be created by writing a DockerFile, which contains all the container boot up instructions. Multiple Docker images can be managed with Docker Compose allowing for comlplex container stacks to easily be managed […]
Docker LAMP Stack
Docker is a tool used for shipping, or deploying, web applications along with their environment. Using Docker allows for easy sharing and recreating of application environments. This is extremely useful for developers as the stack and application can be built as a compilation of containers and easily deployed or modified. In this tutorial I will […]
Disable SSH Access Using Keys
On most Linux installs anonymous SSH is enabled by default. While the need for this is debateable, I generally disable password SSH’ing to disallow public access. Another important change to the SSH configuration is to disable root access i.e. prevent anybody from SSH’ing into the server as root. User’s with sudo access should be required […]
SSH Tunneling
A common web application server architecture is to only allow public access to specific servers. This allows all internal servers to be closed to internet traffic and only accessible from other servers in the network. I outlined this technique in an article for setting up an internal MySQL database server. Often times access is still […]
Vagrant Puppet VM Clusters
As outlined in previous posts Vagrant is a powerful tool for rapidly setting up development environments. However, after setting up numerous different environments for testing and developing in, some of the server set up tasks become repetitive. Puppet is a software solution for managing numerous servers from a single source. Puppet provisioning is a common […]
Vagrant Virtual Machine Cluster
With virtualization and cloud development taking over the industry there are often situations where systems need to be developed on multiple servers. Instead of having to spin up new instances of servers or make space in the cloud, one can use virtual machines (VMs) to develop locally in a clustered environment. Also, when working with […]
Fedora 20 LAMP Setup
I’ve been on the market for a new laptop for awhile now and after working with a Mac extensively at my job I knew I wanted a Windows/Linux dual boot development environment. Aside from the annoyances of Mac’s OS being really close to Linux but different enough have to learn new tools, Macs are way […]
CentOS 6.4 MySQL VPS Setup
I recently started using Digital Ocean for VPS hosting and have been very satisfied. At first I set up a single VPS droplet to host both web server and databases but then decided to break MySQL off onto its own droplet. Digital Ocean recently added private networking in my region which ensures the droplets will […]