Author Topic: Ucarp - Flapping  (Read 887 times)

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Offline cracker1985

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Ucarp - Flapping
« on: May 14, 2015, 06:59:33 pm »
Hello Everyone!

I am already configured ucarp with 2 Virtual Machine on separate HOST (vmware vshere 5.1). Everything works fine! Today network admin talked about flapping between the two vm's which i am configured ucarp. When i open logs for both vm, it show me a lot of warnoing as bellow:

ucarp[473]: [WARNING] Bad digest – md2=[f9dc12f8…] md=[09c565cf…] – Check vhid, password and virtual IP address

OS: Oracle Linux 6.6

My configuration as bellow:

Server 1

/etc/ucarp/vip-001.conf

ID=”001″

BIND_INTERFACE=”eth0″

SOURCE_ADDRESS=”x.x.x.y”

VIP_ADDRESS=”x.x.x.z”

PASSWORD=”mypass”

OPTIONS=”–shutdown –preempt –advskew=10″

----------------------------------------------------------------------------

Server 2

/etc/ucarp/vip-001.conf

ID=”001″

BIND_INTERFACE=”eth0″

SOURCE_ADDRESS=”x.x.x.a”

VIP_ADDRESS=”x.x.x.z”

PASSWORD=”mypass”

------------------------------------

/usr/libexec/ucarp/vip-up

#!/bin/sh

exec 2>/dev/null

/sbin/ifconfig eth0:0 x.x.x.z/24 up

-------------------------------------------------------

/usr/libexec/ucarp/vip-down

#!/bin/sh

exec 2>/dev/null

/sbin/ifconfig eth0:0 down

-----------------------------------------------

I am already enabled promiscuous mode on both hosts network (vmware)   

Where is my issue?

Offline sameer.ramdowar

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Re: Ucarp - Flapping
« Reply #1 on: May 03, 2018, 11:33:28 am »
Hello,

Start ntpd service on both HA servers in order for them to synchronise.

Code: [Select]
chkconfig ntpd on
service ntpd restart

Regards

 


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