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From Radar Da lei <r...@pivotal.io>
Subject Re: question on pg_hba.conf updates
Date Tue, 12 Jul 2016 02:49:12 GMT
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.


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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