Re: [ClusterLabs] 答复: Postgres PAF setup

On 04/25/2018 02:31 AM, 范国腾 wrote:
> I have meet the similar issue when the postgres is not stopped normally.
>
> You could run pg_controldata to check if your postgres status is shutdown/shutdown in recovery.
>
> I change the /usr/lib/ocf/resource.d/heartbeat/pgsqlms to avoid this problem:
>
> elsif ( $pgisready_rc == 2 ) {
> # The instance is not listening.
> # We check the process status using pg_ctl status and check
> # if it was propertly shut down using pg_controldata.
> ocf_log( 'debug', 'pgsql_monitor: instance "%s" is not listening',
> $OCF_RESOURCE_INSTANCE );
> # return _confirm_stopped(); # remove this line
> return $OCF_NOT_RUNNING;
> }

Hello,

It is a bad idea. The goal of _confirm_stopped is to check if the instance was
properly stopped. If it wasn't you could corrupt your instance.

_confirm_stopped return $OCF_NOT_RUNNING only if the instance was properly
shutdown :
elsif ( $controldata_rc == $OCF_NOT_RUNNING ) {
# The controldata state is consistent, the instance was probably
# propertly shut down.
ocf_log( 'debug',
'_confirm_stopped: instance "%s" controldata indicates that the
instance was propertly shut down',
$OCF_RESOURCE_INSTANCE );
return $OCF_NOT_RUNNING;
}

Regards,

--
Adrien NAYRAT