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From Ming Li <...@pivotal.io>
Subject Re: question on pg_hba.conf updates
Date Tue, 12 Jul 2016 03:05:49 GMT
Hi Radar,

If user manually added some entries into master pg_hba.conf, after we
active standby as new master, those entries should be exists on the new
master(previous standby).

So my question is: when those entries copied? At init standby or active
standby?

Thanks.

On Tue, Jul 12, 2016 at 10:49 AM, Radar Da lei <rlei@pivotal.io> wrote:

> Hi Vineet,
>
> While doing HAWQ cluster init, we will collect master/standby/segment ip
> addresses and update pg_hba.conf. After hawq init, content of 'pg_hba.conf'
> on each node should be different.
>
> When a cluster adding a new standby, this will get pg_hba.conf updated on
> all the nodes. Activate standby will not update pg_hba.conf since all
> entires already in standby and segments's pg_hba.conf.
>
> Adding a new segment will only generate a new pg_hba.conf for itself.
>
> These are what I can think out for this moment. Thanks.
>
> Regards,
> Radar
>
> On Tue, Jul 12, 2016 at 10:08 AM, Vineet Goel <vvineet@apache.org> wrote:
>
> > Hi all,
> >
> > Question related to integration with Apache Ambari.
> >
> > It would be nice to make pg_hba.conf visible and editable in Ambari, so
> > that Ambari allows one single interface for admins to update HAWQ and
> > System configs such as hawq-site.xml, hawq-check.conf, sysctl.conf,
> > limits.conf, hdfs-client.xml, yarn-client.xml etc. Rollback and
> > version-history of config files is always a bonus in Ambari.
> >
> > Are there any backend HAWQ utilities (such as activate-standby or others)
> > that update pg_hba.conf file in any way, ever? It would be nice to know
> so
> > that config file change conflicts are managed appropriately.
> >
> > Thanks
> > Vineet
> >
>

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