Please refer to roadmap in our wiki page. Then you can connect to Coordinator 1 and test your newly-made cluster >CREATE NODE dn2 WITH (TYPE='datanode', PORT=15433) >CREATE NODE dn1 WITH (TYPE='datanode', PORT=15432) >postgres -C -D coord1 -i & # -C for a Coordinator >postgres -X -D datanode2 -i & # -X for a Datanode >postgres -X -D datanode1 -i & # -X for a Datanode *Show and check gtm.conf and each nf, change port values for Datanodes => 15432 for Dn1, 15433 for Dn2 >initdb -D coord1 -nodename co1 # Initialize Coordinator 1 >initdb -D datanode2 -nodename dn2 #Initialize Datanode 2 >initdb -D datanode1 -nodename dn1 #Initialize Datanode 1 The following is a quick example to setup one coordinator, two data nodes and one GTM This simplifies the configuration and maintains worload of each servers nearly even. You may want to run GTM at a separate server mainly for availability purpose and you may want another server to run GTM slave for hight availability.It is highly advised to install gtm_proxy, coordinator and datanode at the rest of the servers. If you are deploying Postgres-XC for more serious use, you should consider how many servers you need to store your data. You may have to rewrite many of the template to fit to your single-server configuration. pgxc_ctl will provide configuration file template but it is not suitable for this purpose. You can run sufficient component on this machine but it's not a good idea to run slave of each components. If you are just testing Postgres-XC, you need only one server. This node stores user data Datanode reads its local SQL statements from coordinators and handle them. You can configure as many coordinators in Postgres-XC. A coordinator accepts SQL statements from applications, analyze and determines where the data is stored and handles SQL statements to each datanode. This is a connection point to Postgres-XC applications. This is a proxy of a connection form coordinators/datanodes to GTM to reduce the amount of interaction and data. Coordinators and datanodes connect to GTM to run transactions consisitently at different servers. Gtm stands for "global transaction manager", which provides core of transaction management feature needed to run all the Postgres-XC component in a integrated way. Postgres-XC database cluster consists of the following components: Or you can download the stable development version, it is here REL1_2_STABLEĬd /home/galy/pgxc/stable (your source code place)īefore you start to configure Postgres-XC cluster, you need to determine several things and make hardware/software ready. You can download the stable release from here Postgres-XC 1.2.1 You can also create issue to report bugs, to raise discussion, to post your ideas, etc.įor any project information please contact the project repensentive Koichi Suzuki or Galy Lee How to run Posgres-X2 repositories will be found at postgres-x2 developer page. This page contains Postgres-X2 development community information. If you have codes for new feature or fix, you can issue pull request. Subscribe Postgres-X2-dev group( from google groups titled "postgres-x2-dev". For more information please refer to our development page Subscribing grougle groups, issueing pull request and creating issues are the way to begin with. Postgres-X2 1.2.2 is planned to be released at August 2015, please refer to the ( ) The stable development version is here REL1_2_STABLE The latest release is Postgres-XC 1.2.1 based on PostgreSQL 9.3, you can download it from here Postgres-XC 1.2.1 Based upon PostgreSQL :Same API to Apps as PostgreSQL.Table location transparent : Can continue to use the same applications.Synchronous multi‐master configuration : Any update to any master is visible from other masters immediately.Write scalable PostgreSQL cluster : More than 3× scalability performance speedup with five servers, compared with pure PostgreSQL (DBT‐1).Share nothing Cluster :Multiple collaborating PostgreSQL-like servers, No resources shared, Scaling by adding commodity hardware.This project uses the same license as PostgreSQL, PostgreSQL license (like BSD). Please refer to the Charter for the project information In many of the documents and code, we still use Postgres-XC. This project used the name Postgres-XC originally, it is renamed to Postges-X2 from 2015 after it was moved to Github. It is a collection of tightlyĬoupled database components which can be installed in more than one hardware or virtual Synchronous multi-master, and transparent PostgreSQL interface. Postgres-X2 is an open source project to provide horizontal scalability including write-scalability,
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