Thanks Tibiz for the reply.Will it be a good idea to move the cluster IP in a different Ethernet interface (eth1)?
Regards, Sathish On Fri, Mar 28, 2014 at 3:22 PM, tibz <[email protected]> wrote: > Hello, > > I've encountered this but only once or twice in a year, but indeed when it > happen, VIPs stops responding as network devices (router) have updated > their arp cache en believe the VIP is on your secondary zlb. > Do you have this often? It can eventually happen on network peak or system > load peak that vrrp packet are lost/not processed in time, but not > frequently. > > To mitigate this, you can edit the /etc/init.d/zenloadbalancer file. > Search for "ucarp" and add/edit the deadratio. By default (if not > specified) it's 3. You may increase it to 5 or even more. (just be aware > that it will slow down a little bit the failover in case or real problem) > > There are 2 places to add this, here is an example (parameter is "-r 5"): > my @eject = system("$ucarp $ignoreifstate > --interface=@cliface[2] --srcip=$lip --vhid=2 --pass=secret > --addr=@cliface[1] --upscript=/usr/local/zenloadbalancer/app/zenlatency/ > zenlatency-start.pl--downscript=/usr/local/zenloadbalancer/app/zenlatency/ > zenlatency-stop.pl -r 5 -B -f local6"); > > (more info about ucarp parameter at > http://manpages.ubuntu.com/manpages/precise/en/man8/ucarp.8.html) > > However note that this workaround is only if you have false positive > failover occasionnaly. If it happen often, you likely have another problem > to fix. > > Regards, > > > > On 27/03/2014 22:34, Sathish Gangadharan wrote: > > Even after installing VMware tools, updating NTP server the error seems > to be reoccurring. We had also got confirmation from Network team that vrrp > is not blocked at switch level. But still this error is appearing in > /var/log/messages. > > Is there any thing else that needs to be checked for arresting this issue? > > > On Fri, Mar 14, 2014 at 3:35 PM, Emilio Campos < > [email protected]> wrote: > >> check: >> -ntp syncronization >> -if you are working with virtual machines, ensure that the vmware tools, >> xen tools or similar are installed. >> -confirm that switches are nol locking vrrp packages. >> >> Regards >> >> >> 2014-03-14 7:12 GMT+01:00 Sathish Gangadharan < >> [email protected]>: >> >>> Hello ZenLB Admins, >>> >>> We had implemented Zen LB (opensource) v3.03 for loadbalancing proxy >>> servers. A virtual IP with L4xNAT profile is being used for load balancing >>> 3 servers and there are 2 nodes in the cluster (Cluster Type: LB01 or LB02 >>> can be masters). >>> >>> We are facing flapping issue between the LB nodes. Unfortunately, when >>> this issue occurs the service goes down completely. Can someone throw some >>> light on this issue? >>> >>> Here are the logs taken from both the LBs: >>> >>> 192.168.1.5 (Primary) >>> >>> Mar 13 15:38:24 LB1 ucarp[3949]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> Mar 13 15:38:24 LB1 ucarp[3949]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> Mar 13 15:38:24 LB1 ucarp[3949]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> Mar 13 17:15:02 LB1 ucarp[15913]: [INFO] Local advertised ethernet >>> address is [00:50:56:85:1a:e2] >>> Mar 13 17:15:02 LB1 ucarp[15913]: [WARNING] Switching to state: BACKUP >>> Mar 13 17:15:02 LB1 ucarp[15913]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-stop.pl eth0 >>> 192.168.1.7] >>> Mar 13 17:15:09 LB1 ucarp[15913]: [WARNING] Switching to state: MASTER >>> Mar 13 17:15:09 LB1 ucarp[15913]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-start.pl eth0 >>> 192.168.1.7] >>> Mar 13 17:15:24 LB1 ucarp[15913]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> Mar 13 17:15:24 LB1 ucarp[15913]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> Mar 13 17:15:24 LB1 ucarp[15913]: [WARNING] Non-preferred master >>> advertising: reasserting control of VIP with another gratuitous arp >>> >>> 192.168.1.6 (Secondary) >>> Mar 13 15:38:15 LB2 ucarp[3546]: [WARNING] Switching to state: MASTER >>> Mar 13 15:38:15 LB2 ucarp[3546]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-start.pl eth0 >>> 192.168.1.7] >>> Mar 13 15:38:24 LB2 ucarp[3546]: [WARNING] Switching to state: BACKUP >>> Mar 13 15:38:24 LB2 ucarp[3546]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-stop.pl eth0 >>> 192.168.1.7] >>> Mar 13 15:38:29 LB2 ucarp[3546]: [WARNING] Preferred master advertised: >>> going back to BACKUP state >>> Mar 13 17:15:07 LB2 ucarp[14526]: [INFO] Local advertised ethernet >>> address is [00:50:56:85:1a:e3] >>> Mar 13 17:15:07 LB2 ucarp[14526]: [WARNING] Switching to state: BACKUP >>> Mar 13 17:15:07 LB2 ucarp[14526]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-stop.pl eth0 >>> 192.168.1.7] >>> Mar 13 17:15:15 LB2 ucarp[14526]: [WARNING] Switching to state: MASTER >>> Mar 13 17:15:15 LB2 ucarp[14526]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-start.pl eth0 >>> 192.168.1.7] >>> Mar 13 17:15:24 LB2 ucarp[14526]: [WARNING] Switching to state: BACKUP >>> Mar 13 17:15:24 LB2 ucarp[14526]: [WARNING] Spawning >>> [/usr/local/zenloadbalancer/app/zenlatency/zenlatency-stop.pl eth0 >>> 192.168.1.7] >>> Mar 13 17:15:29 LB2 ucarp[14526]: [WARNING] Preferred master advertised: >>> going back to BACKUP state >>> >>> Many Thanks >>> Sathish >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Learn Graph Databases - Download FREE O'Reilly Book >>> "Graph Databases" is the definitive new guide to graph databases and >>> their >>> applications. Written by three acclaimed leaders in the field, >>> this first edition is now available. Download your free book today! >>> http://p.sf.net/sfu/13534_NeoTech >>> _______________________________________________ >>> Zenloadbalancer-support mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support >>> >>> >> >> >> -- >> Load balancer distribution - Open Source Project >> http://www.zenloadbalancer.com >> Distribution list (subscribe): >> [email protected] >> >> >> ------------------------------------------------------------------------------ >> Learn Graph Databases - Download FREE O'Reilly Book >> "Graph Databases" is the definitive new guide to graph databases and their >> applications. Written by three acclaimed leaders in the field, >> this first edition is now available. Download your free book today! >> http://p.sf.net/sfu/13534_NeoTech >> _______________________________________________ >> Zenloadbalancer-support mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support >> >> > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Zenloadbalancer-support mailing > [email protected]https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support > > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Zenloadbalancer-support mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support > >
------------------------------------------------------------------------------
_______________________________________________ Zenloadbalancer-support mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support
