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Keepalived vs Serf: What are the differences?
What is Keepalived? A routing software written in C. The main goal of this project is to provide simple and robust facilities for loadbalancing and high-availability to Linux system and Linux based infrastructures.
What is Serf? Service orchestration and management tool. Serf is a service discovery and orchestration tool that is decentralized, highly available, and fault tolerant. Serf runs on every major platform: Linux, Mac OS X, and Windows. It is extremely lightweight: it uses 5 to 10 MB of resident memory and primarily communicates using infrequent UDP messages.
Keepalived and Serf can be primarily classified as "Open Source Service Discovery" tools.
Serf is an open source tool with 4.72K GitHub stars and 471 GitHub forks. Here's a link to Serf's open source repository on GitHub.
Gini, Groupe La Poste, and utry are some of the popular companies that use Keepalived, whereas Serf is used by HashiCorp, ClickBalance, and Citrusbyte. Keepalived has a broader approval, being mentioned in 3 company stacks & 8 developers stacks; compared to Serf, which is listed in 4 company stacks and 4 developer stacks.
Pros of Keepalived
- 2 nodes HA cluster management1
- Extremely fast (IPVS)1
- Virtual IP HA with VRRP1
- Load Balancer1