Keepalived is a service that can monitor servers or processes in order to implement high availability on your infrastructure. In this guide, we will use the `keepalived` daemon to monitor two web servers. The secondary server will take over the web traffic if the primary server experiences issues by automatically claiming ownership of a shared Floating IP address using the cloud provider API.
Автор выбрал фонд Free and Open Source Fund для получения пожертвования в рамках программы Write for DOnations. Кластеризация повышает уровень доступности базы данных за счет распространения…
ProxySQL is an open-source MySQL proxy server which can improve performance by distributing traffic among a pool of multiple database servers and also improve availability by automatically failing over to a standby if a database server fails. In this guide, you will set up ProxySQL as a load balancer for multiple MySQL servers with automatic failover.
In this guide, you will configure an active-active MySQL Galera cluster with three Ubuntu 18.04 servers. Clustering adds high availability to your MySQL database by distributing changes to different servers. In the event that one of the instances fails, others are quickly available to continue serving. Galera is a database clustering solution that enables you to set up multi-master clusters using synchronous replication.
It doesn’t matter if you’re running a small blog, a large application, or an API; you never want it to be offline. A single point of failure is any part of your infrastructure that will cause downtime if it fails. A highly available infrastructure has no single point of failure. A highly available configuration is not only important for redundancy. It will also be faster and more cost effective to scale your infrastructure as well.
The practice of synchronizing data across multiple separate databases is called replication. In MongoDB, a group of servers that maintain the same data set through replication are referred to as a replica set. This tutorial provides a brief overview of how replication works in MongoDB before outlining how to configure and initiate a replica set with three members.
In this article, we will go over the specific features of a high-availability application setup and discuss its components at a high level. At the end of each section, we’ll link out to additional resources on the topic to support you as you consider methodologies and best practices.
Once your application is up and running in a cloud server environment, you may be wondering how you can improve your server environment to make the leap from “it works” to a full-fledged production environment. This article will help you get started with planning and implementing a production environment by creating a loose definition of “production”, and by showing you some components that you can add to your existing architecture to make the transition.
In this article, we will see how to exploit some of the truly excellent and unique possibilities offered by the cloud provider’s global cloud server / data-centre infrastructure to have a geographically-distributed, highly-available application set-up for minimal downtime (and thus dataloss) by managing DNS responses.
Sharded databases have been receiving lots of attention in recent years, but many don’t have a clear understanding of what they are or the scenarios in which it might make sense to shard a database. This conceptual article goes over what sharding is, some of its main benefits and drawbacks, and also a few common sharding methods.
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