postgresql multi-master 系列 Rubyrep 之一 setup

Development of an open-source solution for asynchronous, master-master replication of relational databases that is

ridiculously easy to use
database independent

有兩種方式

1. Standard Ruby flavor
2. JRuby flavor

本次採用 Standard Ruby flavor

192.168.56.111  n1
192.168.56.112  n2

版本

# cat /etc/centos-release
CentOS Linux release 7.4.1708 (Core) 
# 
# 
# yum list installed |grep -i postgresql
postgresql11.x86_64                11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-contrib.x86_64        11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-debuginfo.x86_64      11.5-1PGDG.rhel7                    @pgdg11  
postgresql11-devel.x86_64          11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-docs.x86_64           11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-libs.x86_64           11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-llvmjit.x86_64        11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-odbc.x86_64           12.01.0000-1PGDG.rhel7              @pgdg11  
postgresql11-plperl.x86_64         11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-plpython.x86_64       11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-pltcl.x86_64          11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-server.x86_64         11.8-1PGDG.rhel7                    @pgdg11  
postgresql11-tcl.x86_64            2.4.0-2.rhel7.1                     @pgdg11  
postgresql11-test.x86_64           11.8-1PGDG.rhel7                    @pgdg11

# su - postgres
Last login: Wed Jan 15 18:34:12 CST 2020 on pts/0
$
$
$ psql -c "select version();"
                                                 version                                                 
---------------------------------------------------------------------------------------------------------
 PostgreSQL 11.8 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39), 64-bit
(1 row)

安裝 RVM, Ruby

n1、n2 節點都需要安裝
參考<<rvm，ruby的安裝>>

安裝 rubyrep

n1、n2 節點都需要安裝
依賴 pg_config

# export PGHOME=/usr/pgsql-11;
export PGDATA=/var/lib/pgsql/11/data;
export MANPATH=${PGHOME}/share/man:$MANPATH;
export LD_LIBRARY_PATH=${PGHOME}/lib;
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib;
export PATH=${PGHOME}/bin:$PATH;
export TEMP=/tmp;
export TMPDIR=/tmp;

# gem install pg

# gem install rubyrep

參考:
https://wiki.postgresql.org/wiki/Rubyrep

http://www.rubyrep.org/
https://github.com/rubyrep/rubyrep