阿里云服务器 centos 7 安装postgresql 11

Postgresql简介

官方网站：https://www.postgresql.org/

简介参考zhihu文章 https://www.zhihu.com/question/20010554

关于框架+DB的一些性能参考性能测试（仅供参考） http://www.techempower.com/benchmarks/#section=data-r15&hw=ph&test=fortune

一、更新rpm源

1、打开官网https://yum.postgresql.org/repopackages.php

2、复制上图链接添加rpm源

$ yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

3、查看可以安装的postgresql版本，此命令会稍微慢一些

$ yum list | grep postgresql

二、安装postgresql

1、注意下安装版本

yum install postgresql11-contrib postgresql11-server -y

以下是安装日志

Dependencies Resolved

===============================================================================================================

 Package                           Arch                Version                       Repository           Size

===============================================================================================================

Installing:

 postgresql11-contrib              x86_64              11.3-1PGDG.rhel7              pgdg11              616 k

 postgresql11-server               x86_64              11.3-1PGDG.rhel7              pgdg11              4.7 M

Installing for dependencies:

 libicu                            x86_64              50.1.2-17.el7                 base                6.9 M

 libxslt                           x86_64              1.1.28-5.el7                  base                242 k

 postgresql11                      x86_64              11.3-1PGDG.rhel7              pgdg11              1.7 M

 postgresql11-libs                 x86_64              11.3-1PGDG.rhel7              pgdg11              360 k

Transaction Summary

===============================================================================================================

Install  2 Packages (+4 Dependent packages)

Total download size: 14 M

Installed size: 55 M

Downloading packages:

(1/6): libxslt-1.1.28-5.el7.x86_64.rpm                                                  | 242 kB  00:00:00

(2/6): libicu-50.1.2-17.el7.x86_64.rpm                                                  | 6.9 MB  00:00:00

warning: /var/cache/yum/x86_64/7/pgdg11/packages/postgresql11-contrib-11.3-1PGDG.rhel7.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 442df0f8: NOKEY

Public key for postgresql11-contrib-11.3-1PGDG.rhel7.x86_64.rpm is not installed

(3/6): postgresql11-contrib-11.3-1PGDG.rhel7.x86_64.rpm                                 | 616 kB  00:01:03

(4/6): postgresql11-libs-11.3-1PGDG.rhel7.x86_64.rpm                                    | 360 kB  00:00:55

postgresql11-server-11.3-1PGDG FAILED                                          2.6 kB/s | 9.4 MB  00:32:32 ETA

https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7-x86_64/postgresql11-server-11.3-1PGDG.rhel7.x86_64.rpm: [Errno 12] Timeout on https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7-x86_64/postgresql11-server-11.3-1PGDG.rhel7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')

Trying other mirror.

(5/6): postgresql11-11.3-1PGDG.rhel7.x86_64.rpm                                         | 1.7 MB  00:06:11

(6/6): postgresql11-server-11.3-1PGDG.rhel7.x86_64.rpm                                  | 4.7 MB  00:06:45

---------------------------------------------------------------------------------------------------------------

Total                                                                           19 kB/s |  14 MB  00:12:57

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-PGDG

Importing GPG key 0x442DF0F8:

 Userid     : "PostgreSQL RPM Building Project <pgsqlrpms-hackers@pgfoundry.org>"

 Fingerprint: 68c9 e2b9 1a37 d136 fe74 d176 1f16 d2e1 442d f0f8

 Package    : pgdg-redhat-repo-42.0-4.noarch (installed)

 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-PGDG

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

  Installing : postgresql11-libs-11.3-1PGDG.rhel7.x86_64                                                   1/6

  Installing : libicu-50.1.2-17.el7.x86_64                                                                 2/6

  Installing : postgresql11-11.3-1PGDG.rhel7.x86_64                                                        3/6

  Installing : libxslt-1.1.28-5.el7.x86_64                                                                 4/6

  Installing : postgresql11-contrib-11.3-1PGDG.rhel7.x86_64                                                5/6

  Installing : postgresql11-server-11.3-1PGDG.rhel7.x86_64                                                 6/6

  Verifying  : postgresql11-11.3-1PGDG.rhel7.x86_64                                                        1/6

  Verifying  : postgresql11-server-11.3-1PGDG.rhel7.x86_64                                                 2/6

  Verifying  : libicu-50.1.2-17.el7.x86_64                                                                 3/6

  Verifying  : libxslt-1.1.28-5.el7.x86_64                                                                 4/6

  Verifying  : postgresql11-libs-11.3-1PGDG.rhel7.x86_64                                                   5/6

  Verifying  : postgresql11-contrib-11.3-1PGDG.rhel7.x86_64                                                6/6 

Installed:

  postgresql11-contrib.x86_64 0:11.3-1PGDG.rhel7         postgresql11-server.x86_64 0:11.3-1PGDG.rhel7        

Dependency Installed:

  libicu.x86_64 0:50.1.2-17.el7                       libxslt.x86_64 0:1.1.28-5.el7

  postgresql11.x86_64 0:11.3-1PGDG.rhel7              postgresql11-libs.x86_64 0:11.3-1PGDG.rhel7             

Complete!

查看是否安装成功

rpm -aq| grep postgres

安装成功后Postgresql安装目录是/usr/pgsql-11 文件目录是 /var/lib/pgsql/11/data 如图：

2、初始化数据库

$ /usr/pgsql-11/bin/postgresql-11-setup initdb

3、设置自动启动，并查看启动状态

$ systemctl enable postgresql-11

$ systemctl start postgresql-11

$ systemctl status postgresql-11

三、配置postgresql

1、登录postgresql并设置密码

su - postgres

进入数据库

psql

更改密码

ALTER USER postgres WITH PASSWORD 'postgres'

退出，并并切换回root账户，重新输入密码即可

\q

su root

2、修改访问策略，默认是不允许远程登录

搜索pg_hba.conf文件

find / -name pg_hba.conf

复制文件路径修改pg_hba.conf

vim /var/lib/pgsql/11/data/pg_hba.conf

ADDRESS：修改为samenet(匹配服务器所在子网中的任何地址) 或 0.0.0.0/0 (任意IP地址) 或指定的IP地址

METHOD：修改为trust (可信任)

3、修改远程访问IP

搜索postgresql.conf文件

find / -name postgresql.conf

复制文件路径用vim修改，取消listen_addresses前面的#注释，并修改地址为* (所有IP) 或者线上外网IP地址，如图

线上环境#port = 5432最好取消注释，端口一并调整

vim /var/lib/pgsql/11/data/postgresql.conf

4、重启postgresql-11

systemctl restart postgresql-11

四、连接postgresql

1、如果是阿里云服务器记得打开对应的端口，否则无法连接，如果是虚拟机测试环境可忽略

2、注意检查下防火墙是否开启&端口是否打开，也会影响远程连接

firewall-cmd --permanent --add-port=5432/tcp

systemctl restart firewalld

3、连接测试

navicat 官网自行下载https://www.navicat.com.cn/

pgadmin 官网自行下载https://www.pgadmin.org/download/