Serf is a decentralized service orchestration and service discovery tool. It is extremely fault tolerant and decentralized, with no single point of failure like other similar tools. Serf can be used to trigger any event across a cluster of systems as well as perform monitoring duties. It’s built on top of the Gossip protocol which is designed for decentralized communication.
MySQL replication reliably mirrors the data and operations from one database to another. Conventional replication involves a primary server configured to accept database write operations. Secondary servers copy and apply actions from the primary’s log to its own data set. …
This checkpoint is intended to help you assess what you learned from our introductory articles to containers, where we introduced the container ecosystem alongside Docker and Kubernetes, two common container solutions.
Fleet is the cluster-wide service management component of CoreOS. In this guide, we will take an in-depth look at the unit files that define services for CoreOS. We will learn how to create flexible services that take advantage of the power of the CoreOS platform.
How to migrate your existing MySQL database off of your application server to scale your environment. Because every application has its own configuration quirks, with regards to database connections and interactions, we will demonstrate the migration process with WordPress but you can adapt this guide to any other application that uses MySQL as its database.
Web applications are often architected with three distinct tiers: the presentation layer, which is what the user sees, the application layer, which provides the business logic of the application, and the data layer which stores the application’s data. In this tutorial, you will deploy a Rails app in a three-tier configuration by installing a unique set of software on three separate servers, configuring each server and their components to communicate and function securely and effectively.
Rancher supports Docker Machine-based provisioning, which makes it easy to create Docker hosts on cloud providers, or inside your own data center. In this tutorial, you’ll use the the cloud provider driver that’s built into Rancher to create Droplets from the Rancher UI and provision them to run Docker compute hosts which you can monitor, scale, and use to deploy Docker containers.
### IntroductionTahoe-LAFS is a distributed “least-authority” filesystem that can be easily scaled to provide a robust, network aware storage network. With benefits similar to those that RAID configurations gain at the disk level, Tahoe-LAFS leverages a similar model to encrypt and split up…
HAProxy, which stands for High Availability Proxy, is a popular open source software TCP/HTTP Load Balancer and proxying solution.
If you are planning to run a CoreOS cluster in a network environment outside of your control, you may be concerned that etcd communicates over plain HTTP. This guide describes enabling TLS/SSL security and a basic firewall on CoreOS machines.
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