RHBA-2025:4061 - Bug Fix Advisory

Topic

An update for keepalived is now available for Red Hat Enterprise Linux 8.

Description

The keepalived utility provides simple and robust facilities for load balancing and high availability. The load balancing framework relies on the well-known and widely used IP Virtual Server (IPVS) kernel module providing layer-4 (transport layer) load balancing. Keepalived implements a set of checkers to dynamically and adaptively maintain and manage a load balanced server pool according to the health of the servers. Keepalived also implements the Virtual Router Redundancy Protocol (VRRPv2) to achieve high availability with director failover.

Bug Fix(es):

• keepalived healthchecker threads stop permanently (JIRA:RHEL-66742)
• use_vmac not allowed with unicast vrrp, after keepalived update to 2.1.5-9 (JIRA:RHEL-7694)
• keepalived 2.1.5 in RHEL-8 does not allow to set weight 0 on real-servers (JIRA:RHEL-7699)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• RHEL-7694 - use_vmac not allowed with unicast vrrp, after keepalived update to 2.1.5-9
• RHEL-7699 - keepalived 2.1.5 in RHEL-8 does not allow to set weight 0 on real-servers

CVEs

(none)

References

(none)