Re: How to monitor logical replication initial sync?

On 3/15/18 09:19, bricklen wrote:
> How does one monitor the status or progress of an initial sync under
> logical replication?  For example:
>
> * I create a publication in database db_pub
> * I create a subscription in database db_sub
> * In 15 minutes I want to check an see that the initial sync is N%
> complete
>
> Is it possible to tell when the initial sync is complete, or better
> yet, how complete it is?
>
>
> ​This is a question I'm quite interested in as well (and one I do not
> have an answer to).​
>  
> ​Does anyone with more familiarity ​with logical replication have any
> suggestions on how to determine the status of the initial sync?

Something like

select * from pg_subscription_rel where srsubstate <> 'r' and srsubid =
(select oid from pg_subscription where subname = 'mysub');

The key is checking the srsubstate column for 'r' (ready).

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services