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Re: [lvs-users] IPVS forwards the requests to real servers for stranger

To: Свинцов Анатолий <ASvintsov@xxxxxxxxx>
Subject: Re: [lvs-users] IPVS forwards the requests to real servers for stranger VIP
Cc: "lvs-users@xxxxxxxxxxxxxxxxxxxxxx" <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Julian Anastasov <ja@xxxxxx>
Date: Sat, 7 Nov 2015 11:29:35 +0200 (EET)
        Hello,

On Thu, 5 Nov 2015, Свинцов Анатолий wrote:

> Hello.
> We use IPVS in the management interface they use keepalived. In use, we are 
> faced with the problem of spontaneous substitution VIP for IPVS. The problem 
> manifests itself as follows. At some point of time IPVS starts to send the 
> requests came to A VIP on the real servers configured for the VIP B. Noticed 
> that this happens after the update quorum. VIP B for pereseltsy invalid 
> requests will be the same on which the problem occurred last time I converted 
> a quorum. But the fact is that this problem occurs not during every 
> recalculation of quorum, and at some random moment.
> Now we solve this problem by removing\adding A VIP configuration from the 
> config file and restart the keepalived the keepalived process.
> At the moment we use on servers that IPVS the following software: CentOS 6.7 
> (kernel3.18.21-2.1.x86_64) v1.2.19 keepalived, ipvsadmv1.28.
> Please tell me how to solve our problem?

        Is it a problem with keepalived or an IPVS problem?
Anything strange from ipvsadm -Ln ? Can you show the
output when problem occurs?

Regards

--
Julian Anastasov <ja@xxxxxx>
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