Try configure native Bi-Direction (synchronous) replication between two postgresql 9.5 beta 2.
OS Ubuntu 14.04
Googled many documents and blogs, but still dont understand how can I configure postgresql.conf to start Bi-Direction replication
Any sample please.
You can't, because there is no built-in support for bidirectional replication in PostgreSQL 9.5.
The BDR project is an effort to develop mesh multimaster logical replication. It is based on 9.4. There is no plan to support 9.5; we intend to skip straight to 9.6 when it is released, and stay on 9.4 in the mean time.
There are external trigger-based tools that do multi-master for PostgreSQL 9.5, like Londiste and Bucardo.
There's also Postgres-XL for full tightly-coupled multi-master but it hasn't been updated to 9.5 yet, and it's a separate modified PostgreSQL, not an add-on.
pglogical, which is derived from BDR, will hopefully provide full multimaster in future, but that's more like 9.6 timeframe.
Related
I have postgres 9.5 database with one master and two replicas. My project is on c++.
To check if master instance is available I run mock query. Is there more convenient way to do this?
UPD: I know about instruments which can be used in terminal such as systemctl and pg_isready, but they are not applicable to use from c++ project
We use repmgr to keep an eye on all clusters and to manage the primary and secondary databases.
But version 9.5, are you sure? That's EOL for a pretty long time. Plan a move to version 14.
How to configure clustering (active/active) in PostgreSQL 9.1 ? My current configurations are listed below:
RAM : 8Gb,
O.S : Ubuntu 12.04 LTS,
CPU : 4
If you are looking for a multimaster PostgreSQL solution (one where you can modify data on either node, and the modification is replicated to the other node), there is no built-in solution yet.
You can use extensions like 2ndQuadrant's BDR (but that requires a modified PostgreSQL server) or proprietary solutions like EnterpriseDB's xDB Replication Server.
There is also the open source fork Postgres-XL which provides a different solution.
You can use open-source database sync software symmetricDS for PostgreSQL Active Active replication setup.
There's also SymmetricDS, an open source product that allows you to configure your Postgres instances in an active/active configuration.
A good guide on how to do this can be found here.
We are having 2 database servers (Debian 8.3) with postgresql.
1st server having postgresql 8.4 and 2nd server is having postgresql 9.4.
Would it be possible to setup bucardo between this 2 database servers?
Please let me know.
Any hint will be really appreciated.
Yes. Bucardo can replicate between different versions of Postgres. Bucardo 5.6 will work from v8.1 to at least v12.
In fact Bucardo is used sometimes to upgrade PostgreSQL version without downtime.
all instructions lead to synchronize data folders from master server to slave. But it can not be done between major releases.
ps: general task is update master and slave server from 9.1 to 9.3
It is not entirely clear what you are talking about.
If you're talking about slony replication, it is designed to replicate data across versions. I've replicated databases from 8.4 to 9.1. You must have running the same schema (regarding the replicated objects) on both servers already. Slony replicates tables and sequences very well, it has some stuff for replicating schema changes, but I prefer doing this out-of-band.
If you're talking about in-place upgrading your db server, I'd suggest reading the fine documentation and going from 9.1 to 9.2, then to 9.3 (just to be cautious)
I am finding difficulties in finding multi-master (supports atleast 3 to 4 masters) replication package for postgresql Data Base.
Does pgcluster support postgresql 9.0 version ?
Try the beta. If I understood correctly, synchronous master-master replication is built into PostgreSQL 9.1:
http://developer.postgresql.org/pgdocs/postgres/release-9-1.html
E.1.3.2.1. Streaming Replication and Continuous Archiving