[ClusterLabs] 答复: the PAF switchover does not happen if the VIP resource is stopped

[范国腾]

Hi Rorthais，

Thank you for your help. 

The replication works at that time. 

I try again today.
(1) If I run "ifup enp0s3" in node2, then run "ifdown enp0s3" in node1, the switchover issue could be reproduced. 
(2) But if I run "ifup enp0s3" in node2, run "pcs resource cleanup mastergroup" to clean the VIP resource, and there is no Failed Actions in "pcs status", then run "ifdown enp0s3" in node1, it works. The switchover could happened again.


Is there any parameter to control this behaviors so that I don't need to execute the "pcs cleanup" command every time?

-----邮件原件-----
发件人: Jehan-Guillaume de Rorthais [mailto:jgdr at dalibo.com] 
发送时间: 2018年4月25日 18:39
收件人: 范国腾 <fanguoteng at highgo.com>
抄送: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>; 李梦怡 <limengyi at highgo.com>
主题: Re: [ClusterLabs] the PAF switchover does not happen if the VIP resource is stopped


On Wed, 25 Apr 2018 08:58:34 +0000
范国腾 <fanguoteng at highgo.com> wrote:

> 
> Our lab has two resource: (1) PAF (master/slave)    (2) VIP (bind to the
> master PAF node). The configuration is in the attachment.
> 
> Each node has two network card: One(enp0s8) is for the pacemaker 
> heartbeat in internal network, the other(enp0s3) is for the master VIP 
> in the external network.
> 
> 
> 
> We are testing the following case: if the master VIP network card is 
> down, the master postgres and VIP could switch to another node.
> 
> 
> 
> 1. At first, node2 is master, I run "ifdown enp0s3" in node2, then 
> node1 become the master, that is ok.
> 
> 2. Then I run "ifup enp0s3" in node2, wait for 60 seconds,

Did you check PostgreSQL instances were replicating again?

> then run "ifdown enp0s3" in node1, but the node1 still be master. Why 
> does switchover doesn't happened? How to recover to make system work?
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