Hi Jay,

Bucardo uses triggers to capture data changes (and clean up after itself) so it 
has to run on a writeable server.

What is the use case you’re looking at, and what are the versions of the 
databases involved?

Best,

David
--
David Christensen
Senior Software and Database Engineer
End Point Corporation
[email protected]
785-727-1171


> On Oct 16, 2020, at 10:35 AM, jay saini <[email protected]> wrote:
> 
> Hi David,
> 
> Thanks for your reply. I have tested both the writable dbs and it works fine 
> for me. The use case is to use read only replica (slave) which will act as 
> source and replicate it to writable db? Is this possible with Bucardo? Or we 
> need to have both the dbs as Writable.
> 
> Expecting your response on this.
> 
> Regards
> Jaydeep
> 
> On Fri, 16 Oct 2020 at 8:09 PM, David Christensen <[email protected]> wrote:
> Hi Jay,
> 
> You need to target a writable database since it is trying to insert rows; you 
> can’t use a readonly standby for the target. Could you use the source for the 
> readonly standby as the target?
> 
> Best,
> 
> David
> 
>> On Oct 16, 2020, at 8:26 AM, jay saini <[email protected]> wrote:
>> 
>> 
>> I have successfully performed replication from Master to Master from 
>> Bucardo. I am stucked in Master-Slave replication. When I am trying to add a 
>> sync it gives me the following error:
>> 
>> root@ip-172-31-XX-XX:~# bucardo add sync test relgroup=herd_pg 
>> dbs=SRC,DEST_SLAVE
>> 
>> WARNING: Issuing rollback() due to DESTROY without explicit disconnect() of 
>> DBD::Pg::db handle dbname=migratedb;host=35.243.157.109;port=5432 at line 
>> 207. Failed to add sync: DBD::Pg::st execute failed: ERROR: DBD::Pg::db do 
>> failed: ERROR: cannot set transaction read-write mode during recovery at 
>> line 207. at line 30. CONTEXT: PL/Perl function "validate_sync" at 
>> /usr/bin/bucardo line 4670.
>> 
>> To give you more context: My master is AWS Aurora Postgres RDS and My slave 
>> is on Google CloudSQL which is a read-only replica.
>> 
>> Looking forward for response
>> _______________________________________________
>> Bucardo-general mailing list
>> [email protected]
>> https://bucardo.org/mailman/listinfo/bucardo-general

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