Missing documentation on the usage of vrrp_sync_group

[anshlv]

Please add some information regarding how to use it, as I cannot find it anywhere, but need to reproduce this part of my keepalived.config

vrrp_sync_group VG1 {
group {
VI_EXT
}
}

[zerthimon]

There is also an error in the documentation:
http://www.keepalived.org/doc/case_study_failover.html#keepalived-configuration
In the example presented, the vrrp_sync_group is:

vrrp_sync_group VG1 {
    VI_1
    VI_2
}

while this should be:

vrrp_sync_group VG1 {
    group {
        VI_1
        VI_2
    }
}

The way its configured in the documentation makes keepalived to segfault:

Mar 30 13:59:38 prod-vm01 Keepalived[19853]: Starting VRRP child process, pid=20996
Mar 30 13:59:38 prod-vm01 Keepalived_vrrp[20996]: Registering Kernel netlink reflector
Mar 30 13:59:38 prod-vm01 Keepalived_vrrp[20996]: Registering Kernel netlink command channel
Mar 30 13:59:38 prod-vm01 Keepalived_vrrp[20996]: Registering gratuitous ARP shared channel
Mar 30 13:59:38 prod-vm01 Keepalived_vrrp[20996]: Opening file '/etc/keepalived/keepalived.conf'.
Mar 30 13:59:38 prod-vm01 kernel: [1214153.721999] keepalived[20996]: segfault at 4 ip 000000000042655e sp 00007ffef6a92f40 error 4 in keepalived[400000+41000]