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

[Jehan-Guillaume de Rorthais]

On Thu, 26 Apr 2018 02:53:33 +0000
范国腾 <fanguoteng at highgo.com> wrote:

> 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?

Check the failcounts for each resource on each nodes (pcs resource failcount
[...]).
Check the scores as well (crm_simulate -sL).

> 
> -----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?