postgresql集群搭建方法

1、创建用户postgres

ansible all -m shell -a "useradd postgres"

2、修改postgres用户的密码

ansible all -m shell -a 'echo "postgres:postgres" | chpasswd'

3、批量安装基础软件包

ansible all -m shell -a "yum install -y flex bison readline-devel zlib-devel openjade docbook-style-dsssl gcc"

4、在每个节点上获取安装软件，并解压缩

5、全部节点都创建pgxc路径，用来存放postgres文件

ansible all -m shell -a "su - postgres -c 'mkdir -p /home/postgres/pgxc/nodes/'"

6、修改每个节点的.bashrc文件

su - postgres

vi .bashrc

export PGHOME=/home/postgres/pgxl

export PGUSER=postgres

export LD_LIBRARY_PATH=$PGHOME/lib:$LD_LIBRARY_PATH

export PATH=$PGHOME/bin:$PATH

source ~/.bashrc

7、关闭iptables

systemctl stop iptables.service

systemctl disable iptables.service

关闭SELinux

setenforce 0   

8、 pgxc_ctl -c pgxc_ctl.conf init all