[ClusterLabs] Observed Difference Between ldirectord and keepalived

[Eric Robinson]

Reid –

My apologies, even though the list is specific to ClusterLabs, I thought it was a venue where general cluster-related discussion often takes place. Thanks for the clarification.

--Eric


From: Users <users-bounces at clusterlabs.org> On Behalf Of Reid Wahl
Sent: Saturday, January 2, 2021 4:14 AM
To: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>
Subject: Re: [ClusterLabs] Observed Difference Between ldirectord and keepalived

Hi, Eric.

To the best of my knowledge, neither ldirectord nor keepalived is part of the ClusterLabs project. It looks like the keepalived user group is here: https://www.keepalived.org/listes.html

Is there anything we can help you with regarding the ClusterLabs software?



On Sat, Jan 2, 2021 at 1:12 AM Eric Robinson <eric.robinson at psmnv.com<mailto:eric.robinson at psmnv.com>> wrote:
We recently switched from ldirectord to keepalived. We noticed that, after the switch, LVS behaves a bit differently with respect to “down” services.

On ldirectord, a virtual service with 2 realservers displays “Masq    0” when one of them is down.

TCP  192.168.5.100:3002<http://192.168.5.100:3002> wlc persistent 50
  -> 192.168.8.53:3002<http://192.168.8.53:3002>            Masq    1      0          0
  -> 192.168.8.55:3002<http://192.168.8.55:3002>            Masq    0      0          4

On keepalived, it does not shown the down server at all…

TCP  192.168.5.100:3002<http://192.168.5.100:3002> wlc persistent 50
  -> 192.168.8.53:3002<http://192.168.8.53:3002>            Masq    1      0          0

Why is that? It makes it impossible to see when services are down.


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--
Regards,
Reid Wahl, RHCA
Senior Software Maintenance Engineer, Red Hat
CEE - Platform Support Delivery - ClusterHA
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