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
