On Thu, 7 Jul 2016, 9:20 a.m. Patrick B, <patrickbake...@gmail.com> wrote:
> Hi guys, > > I got two slaves using Postgresql 9.2. > > slave01 - Streaming replication from master > slave02 - nothing.. new server > > is it possible to get slave02 replicating from slave01 (Cascade streaming > replication) this can be done with streaming ? > Yes, a cascaded standby can be setup with Streaming Replication in v9.2 and above. and also slave01 sending the wal_files to that new slave02? > What exactly do you mean here by "sending the wal_files"?? > So it would be on slave01 > > archive_mode = ok > archive_command = .... > This will have no effect on a standby server. archive_command will be neglected This is possible only in v9.5 onward when archive_mode is set to always. wal_level = hot_standby > max_wal_senders = 2 > wal_keep_segments = 128 > > Is that right? > If you want to set up archiving from slave01, checkout pg_receivexlog. https://www.postgresql.org/docs/9.2/static/app-pgreceivexlog.html It might be helpful as it does something similar to archiving but using streaming protocol (so I think it should work even in cascaded mode). But since it works using streaming protocol, max_wal_senders on slave01 will be 2(what you have set now) + 1 (for pg_reveivexlog) > Cheers guys! > Patrick > -- -- Best Regards Sameer Kumar | DB Solution Architect *ASHNIK PTE. LTD.* 101 Cecil Street, #11-11 Tong Eng Building, Singapore 069 533 T: +65 6438 3504 | M: +65 8110 0350 | www.ashnik.com
