Category: Cluster

LVS+Keepalived. Why use load balancing? 1. System high availability 2. System scalability 3. Load balancing capability. LVS+Keepalived perfectly achieves these requirements.

[LVS] Using clustering technology and the Linux operating system to build a high-performance, high-availability server with excellent scalability, reliability, and manageability.
LVS features include:
1. Strong load resistance, operating above Layer 4 of the network only …

I. Starting Heartbeat 1. Start Heartbeat on the Primary Node After Heartbeat installation completes, a startup script file heartbeat is automatically generated in the /etc/init.d directory. Running /etc/init.d/heartbeat directly shows the usage of the heartbeat script, as shown below: [root@node1 ~]# /e …

The current trend in website development is to use different network load balancing technologies at different stages as the website scales up:
One approach is to use hardware. Common hardware includes relatively expensive commercial load balancers like NetScaler, F5, Radware, and Array …

Varnish is a powerful reverse proxy acceleration software. This article covers installation and configuration on CentOS.

Keepalived Dual-Machine Hot Standby
Here we will only use Keepalived for dual-machine hot standby, i.e., ensuring high availability of the servers, without worrying about anything else. You might say that this approach is rarely used in real-world applications, but you’d be wrong. There are indeed cases where Keepalived is used solely for dual-machine hot standby, and I’ve encountered several such scenarios…

Recently, my friend Liu Xin’s website successfully launched and began operations, reaching hundreds of millions of PVs per day. The front end uses HAProxy+Keepalived dual-machine load balancers/reverse proxies, and the entire website is extremely stable. This further solidified my belief in using HAProxy+Keepalived as the web front-end load …

Introduction to VarnishVarnish is a high-performance, open-source reverse proxy server and HTTP accelerator. It adopts an entirely new software architecture that works closely with modern hardware systems. Compared to traditional solutions like Squid, Varnish offers higher performance, faster speeds, and more convenient management, among many other advantages. …

1. Upload images to the local server hard drive, then use the local image or file server to handle image access. This approach requires setting a rule where each server needs an additional second-level domain for accessing the local image server. When saving images, the image server’s second-level domain for the current server must also be …

Virtualization has become a universally recognized technology and concept among organizations of all sizes, across all industries, and in all regions. Many applications have already migrated from laptops to the “cloud,” which places higher demands on the network. But in many cases, these requirements were not initially addressed in the network …