Split Brain recovery with haproxy/keepalived setup

Once two keepalived systems enter a split brain state, is it expected
behavior they can get out of it?

Looking at the code it seems they should be able to once they can see each
others advertisements again. Even if they match priority it seems they
check source IP next
in vrrp.c

vrrp_state_master_rx(vrrp_t * vrrp, char *buf, int buflen)
{
##<snip>##
 } else if (vrrp->family == AF_INET) {
* if (hd->priority > vrrp->effective_priority ||*
*    (hd->priority == vrrp->effective_priority &&*
*     ntohl(saddr) > ntohl(VRRP_PKT_SADDR(vrrp)))) {*
 log_message(LOG_INFO, "VRRP_Instance(%s) Received higher prio advert"
    , vrrp->iname);
 if (proto == IPPROTO_IPSEC_AH) {
ah = (ipsec_ah_t *) (buf + sizeof(struct iphdr));
 log_message(LOG_INFO, "VRRP_Instance(%s) IPSEC-AH : Syncing seq_num"
      " - Decrement seq"
    , vrrp->iname);
vrrp->ipsecah_counter->seq_number = ntohl(ah->seq_number) - 1;
 vrrp->ipsecah_counter->cycle = 0;
}
 vrrp->ms_down_timer = 3 * vrrp->adver_int + VRRP_TIMER_SKEW(vrrp);
vrrp->wantstate = VRRP_STATE_BACK;
 vrrp->state = VRRP_STATE_BACK;
return 1;
 }
}

Thoughts? Or is there a different line of code execution if there are two
Master?

-tp-

------------------------------------------------------------------------------
Rapidly troubleshoot problems before they affect your business. Most IT 
organizations don't have a clear picture of how application performance 
affects their revenue. With AppDynamics, you get 100% visibility into your 
Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk

_______________________________________________
Keepalived-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/keepalived-devel