Description of problem:

keepalived 2.1.5 in RHEL-8 does not allow to set weight 0 on real-servers

Version-Release number of selected component (if applicable):

keepalived-2.1.5-9.el8.x86_64 

How reproducible:


- create /etc/keepalived/keepalived.conf with the following content (note weight is zero):

    virtual_server 127.0.0.1 80 {
      protocol TCP

      real_server 127.0.0.1 81 {
                  weight 0
      }
    }


- start keepalived:

- check IPVS configuration. You should see that real-server weight is 1, instead of 0:

# ipvsadm -Ln



Additional info:

Below GIT URL explains this. 

https://github.com/acassen/keepalived/issues/1757

- Below commit have resolution. 

https://github.com/acassen/keepalived/commit/e2b4d108d68ada3af8ad437e2e291fcac1fd0ff7