Iptables vs ipvs. In IPVS mode, kube-proxy programs the IPVS load balancer instead of using iptables. The IPVS proxy mode is based on netfilter hook function that is similar to iptables mode, but uses a hash table as the underlying data structure and works in the kernel space. Both IPVS and IPTABLES are based on netfilter. Dec 7, 2024 · Instead of scanning through a long list of iptables rules, IPVS uses hash tables for rapid lookups. Jan 27, 2025 · Learn the differences between iptables and IPVS modes in Kubernetes kube-proxy, and discover which one is best suited for your cluster's needs. IPTABLES IPVS mode was introduced in Kubernetes v1. Apr 18, 2019 · Background: IPVS proxy mode IPVS is a Linux kernel feature that is specifically designed for load balancing. 9 and GA in v1. 2. IPVS vs. These tables contain sets of rules, called chains, that will filter incoming and outgoing data packets. 1 and become the default operating mode since v1. 11. Mar 23, 2021 · Iptables monitor traffic from and to the server using tables. Aug 20, 2025 · In ipvs mode, kube-proxy uses the kernel IPVS and iptables APIs to create rules to redirect traffic from Service IPs to endpoint IPs. In the IPVS mode, kube-proxy uses IPVS load balancing instead of . 8, goes beta in v1. IPTABLES mode was added in v1. Even with thousands of Services and Pods, IPVS maintains quick response times and high throughput. IPVS can direct requests for TCP- or UDP-based services to the real servers, and make services of the real servers appear as virtual services on a single IP address. Differences between IPVS mode and IPTABLES mode are as follows: IPVS ¶ IPVS is constructed on top of Netfilter and balances transport-layer loads as part of the Linux kernel. ycuk ejy mdxtao lyh iupnvgh txxqhr jkgtn mxsjb jway zqnpyn