Comment 3 for bug 1810538

Sorry for the delay, but I had to start over the complete installation from scratch for this.

# systemctl status keepalived
● keepalived.service - Keepalive Daemon (LVS and VRRP)
   Loaded: loaded (/lib/systemd/system/keepalived.service; disabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/keepalived.service.d
           └─override.conf
   Active: active (running) since Thu 2019-01-10 15:00:06 UTC; 1h 12min ago
 Main PID: 54921 (keepalived)
    Tasks: 3 (limit: 8192)
   CGroup: /system.slice/keepalived.service
           ├─54921 /usr/sbin/keepalived
           ├─54923 /usr/sbin/keepalived
           └─54925 /usr/sbin/keepalived

Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (internal): track script pingable_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Truncating auth_pass to 8 characters
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (external): track script haproxy_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (external): track script pingable_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Using LinkWatch kernel netlink reflector...
Jan 10 15:00:07 vos10 Keepalived_vrrp[54925]: VRRP_Instance(external) Transition to MASTER STATE
Jan 10 15:00:07 vos10 Keepalived_vrrp[54925]: VRRP_Instance(internal) Transition to MASTER STATE
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Instance(external) Entering MASTER STATE
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Group(haproxy) Syncing instances to MASTER state
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Instance(internal) Entering MASTER STATE

# journalctl -u keepalived
-- Logs begin at Thu 2019-01-10 13:01:11 UTC, end at Thu 2019-01-10 16:11:10 UTC. --
Jan 10 15:00:06 vos10 systemd[1]: Starting Keepalive Daemon (LVS and VRRP)...
Jan 10 15:00:06 vos10 Keepalived[54915]: Starting Keepalived v1.3.9 (10/21,2017)
Jan 10 15:00:06 vos10 Keepalived[54915]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 10 15:00:06 vos10 Keepalived[54921]: Starting Healthcheck child process, pid=54923
Jan 10 15:00:06 vos10 Keepalived_healthcheckers[54923]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 10 15:00:06 vos10 Keepalived[54921]: Starting VRRP child process, pid=54925
Jan 10 15:00:06 vos10 systemd[1]: Started Keepalive Daemon (LVS and VRRP).
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Registering Kernel netlink reflector
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Registering Kernel netlink command channel
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Registering gratuitous ARP shared channel
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: WARNING - default user 'keepalived_script' for script execution does not exist - please create.
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Failed to set default user for notify script /etc/keepalived/haproxy_notify.sh - ignoring
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Unable to set default user for vrrp script haproxy_check_script - removing
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Unable to set default user for vrrp script pingable_check_script - removing
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Truncating auth_pass to 8 characters
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (internal): track script haproxy_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (internal): track script pingable_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Truncating auth_pass to 8 characters
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (external): track script haproxy_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: (external): track script pingable_check_script not found, ignoring...
Jan 10 15:00:06 vos10 Keepalived_vrrp[54925]: Using LinkWatch kernel netlink reflector...
Jan 10 15:00:07 vos10 Keepalived_vrrp[54925]: VRRP_Instance(external) Transition to MASTER STATE
Jan 10 15:00:07 vos10 Keepalived_vrrp[54925]: VRRP_Instance(internal) Transition to MASTER STATE
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Instance(external) Entering MASTER STATE
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Group(haproxy) Syncing instances to MASTER state
Jan 10 15:00:08 vos10 Keepalived_vrrp[54925]: VRRP_Instance(internal) Entering MASTER STATE