Search

9.2. IP Virtual Server (IPVS)

download PDF
Red Hat Enterprise Linux 6.5 introduces a new sync message protocol format. This new format is provided to prevent interruptions to business services caused by persistent connections on backup server nodes timing out prematurely, causing inconsistent state in the case of failover to a backup server node.
This new format is not compatible with versions of Red Hat Enterprise Linux 6.4 or earlier, or kernel versions prior to kernel-2.6.32-406.el6. Upgrade backup nodes before upgrading the master node.
To continue using the old format for sync messages, for example if you need to upgrade the master node prior to the backup nodes, set the value of /proc/sys/net/ipv4/vs/sync_version to 0.
Red Hat logoGithubRedditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

© 2024 Red Hat, Inc.