Scaling

Экосистема Docker: обнаружение сервисов (Service Discovery) и распределённые хранилища конфигураций (Distributed Con — Docker tutorial on Progressive Robot

Экосистема Docker: обнаружение сервисов (Service Discovery) и распределённые хранилища конфигураций (Distributed Configuration Stores)

Этот туториал является 3-ой частью из 5-ти в серии статей Экосистема Docker. Контейнеры предоставляют элегантное решение для тех, кто собирается проектировать и разворачивать масштабируемые приложения. В то время, как Docker реализует технологию…

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How To Create a High Availability HAProxy Setup with Corosync, Pacemaker, and Reserved IPs on Ubuntu 14.04 — Linux tutorial on Progressive Robot

How To Create a High Availability HAProxy Setup with Corosync, Pacemaker, and Reserved IPs on Ubuntu 14.04

This tutorial will show you how to create a High Availability HAProxy load balancer setup on the cloud provider, with the support of a Floating IP and the Corosync/Pacemaker cluster stack. The HAProxy load balancers will each be configured to split traffic between two backend application servers. If the primary load balancer goes down, the Floating IP will be moved to the secondary load balancer automatically, allowing service to resume.

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What Is Immutable Infrastructure? — step-by-step Devops tutorial on Progressive Robot

What Is Immutable Infrastructure?

Immutable infrastructure is an infrastructure paradigm in which servers are never modified after they’re deployed. This article explains the conceptual and practical differences between mutable and immutable infrastructure, describes the advantages of using an immutable infrastructure and contextualizes the complications, and gives a high-level overview of the implementation details and necessary components for an immutable infrastructure.

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How to Create a High Availability Setup with Pacemaker, Corosync and Reserved IPs on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How to Create a High Availability Setup with Pacemaker, Corosync and Reserved IPs on CentOS 7

Corosync is an open source cluster engine used to implement high availability within applications. This tutorial will demonstrate how to use Corosync and Pacemaker to create a high availability (HA) infrastructure on the cloud provider with CentOS 7 servers and Reserved IPs. To facilitate the process of setting up and managing the cluster nodes, we are going to use PCS, a command line interface that interacts with both Corosync and Pacemaker.

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