4.1 MogDB&openGauss 手动部署(非OM工具)单机，主备，主备级联架构.txt

李宏达

6页

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2022-09-25

100墨值下载

# 一、前期准备

## 1. 关闭防火墙，selinux

```shell

systemctl disable firewalld.service

systemctl stop firewalld.service

setenforce=0

sed -i '/^SELINUX=/c'SELINUX=disabled /etc/selinux/config

```

## 2. 安装依赖包

```shell

yum install libaio-devel -y

```

## 3. 创建相关目录，用户，组

```shell

groupadd dbgrp -g 2000

useradd omm -g 2000 -u 2000

echo "Enmo@123" | passwd --stdin omm

mkdir -p /opt/mogdb/software

chown -R omm:dbgrp /opt/

```

## 4. 上传并解压二进制文件

```shell

[root@mogdb-kernel-0001 software]# pwd

/opt/mogdb/software

[root@mogdb-kernel-0001 software]# ls -lrt

total 90236

-r-------- 1 root root 92401412 Jun 13 06:14 MogDB-2.0.0-openEuler-64bit.tar.bz2

chown omm:dbgrp MogDB-2.0.0-openEuler-64bit.tar.bz2

su - omm

cd /opt/mogdb/software/

tar -xf MogDB-2.0.0-openEuler-64bit.tar.bz2

```

# 二、初始化数据库（单机）

## 1. 配置环境变量

```shell

echo "export GAUSSHOME=/opt/mogdb/software" >> /home/omm/.bashrc && \

echo "export PATH=\$GAUSSHOME/bin:\$PATH " >> /home/omm/.bashrc && \

echo "export LD_LIBRARY_PATH=\$GAUSSHOME/lib:\$LD_LIBRARY_PATH" >>

/home/omm/.bashrc

source /home/omm/.bashrc

```

## 2. init 数据库

```shell

bin/gs_initdb --pgdata=/opt/mogdb/data --nodename=primary --pwpasswd=Enmo@123

--encoding=UTF-8 --locale=en_US.UTF-8

```

## 3. 修改初始化参数

```shell

echo "port=26000" >> /opt/mogdb/data/postgresql.conf

echo "listen_addresses = '0.0.0.0'" >> /opt/mogdb/data/postgresql.conf

echo "password_encryption_type = 0" >> /opt/mogdb/data/postgresql.conf

echo "log_directory = 'pg_log'" >> /opt/mogdb/data/postgresql.conf

echo "remote_read_mode=non_authentication" >> /opt/mogdb/data/postgresql.conf

echo "host all all 0.0.0.0/0 md5" >> /opt/mogdb/data/pg_hba.conf

```

## 4. 启动数据库

```shell

gs_ctl start -D /opt/mogdb/data

```

**至此单机安装完成**

# 三、主备安装

## 1. 主库操作

- 配置连接通道

```shell

echo "replconninfo1='localhost=172.16.0.106 localport=26001

localheartbeatport=26005 localservice=26004 remotehost=172.16.0.245

remoteport=26001 remoteheartbeatport=26005 remoteservice=26004'

" >> /opt/mogdb/data/postgresql.conf

```

**localhost 为主库 IP,remotehost 为备库 IP**

- 将主库以 primary 方式启动

```shell

gs_ctl restart -D /opt/mogdb/data/ -M primary

```

## 2. 备库操作

- 前期准备工作如上（一）

- 配置环境变量

```shell

echo "export GAUSSHOME=/opt/mogdb/software" >> /home/omm/.bashrc && \

echo "export PATH=\$GAUSSHOME/bin:\$PATH " >> /home/omm/.bashrc && \

echo "export LD_LIBRARY_PATH=\$GAUSSHOME/lib:\$LD_LIBRARY_PATH" >>

/home/omm/.bashrc

source /home/omm/.bashrc

- 将主库的配置文件传到备库

scp /opt/mogdb/data/pg_hba.conf /opt/mogdb/data/postgresql.conf

172.16.0.245:/opt/mogdb/data/

```

- 配置连接通道,将 localhost 和 remotehost 对调.

sed -i "/^replconninfo1/creplconninfo1='localhost=172.16.0.245 localport=26001

localheartbeatport=26005 localservice=26004 remotehost=172.16.0.106

remoteport=26001 remoteheartbeatport=26005 remoteservice=26004'"

/opt/mogdb/data/postgresql.conf

**localhost 为备库 IP,remotehost 为主库 IP**

- 构建主备关系

```shell

gs_ctl build -D /opt/mogdb/data/ -b full -M standby

```

- 查询主备状态

- 主库

```shell

[omm@mogdb-kernel-0001 data]$ gs_ctl query -D /opt/mogdb/data/

[2021-06-13 07:51:41.119][159054][][gs_ctl]: gs_ctl query ,datadir is

/opt/mogdb/data

HA state:

local_role : Primary

static_connections : 1

db_state : Normal

detail_information : Normal

Senders info:

sender_pid : 159041

local_role : Primary

peer_role : Standby

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