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linux 安装PostgreSQL12

linux 安装PostgreSQL12

 

 

 

 

一、安装步骤

1、设置保存安装包的目录

# cd /usr/local/src

2、开始下载源包

# wget https://ftp.postgresql.org/pub/source/v12.1/postgresql-12.1.tar.gz      (https://www.postgresql.org/ftp/source/ 这里是官网资源)

3、解压

# tar zxvf postgresql-12.1.tar.gz

4、移动位置/usr/local/pgsql/postgresql-12.1

# mv postgresql-12.1 /usr/local/pgsql/postgresql-12.1

6、进入移动后的目录

# cd /usr/local/pgsql/postgresql-12.1

8、配置选项生成Makefile,默认安装到目录/usr/local/pgsql/postgresql-12.1

# ./configure            (如果要安装到自定义目录,这里修改为  # ./configure --prefix= /usr/local/pgsql  红字部分是的自定义路径)

9、echo 一下返回是否为0, 0表示无错误

# echo $? 
130

10、发现没有相关包依次安装

# yum install -y bison 
# yum install -y flex
# yum install -y readline-devel (https://www.linuxidc.com/Linux/2012-02/53982.htm 这里有解释为什么安装这个)
# yum install -y zlib-devel

11、编译

# make (编译后再echo $? 如果为0 就可以安装了)

12、安装

# make install

13、创建,添加postgres 用户到 postgres组

# groupadd postgres                             (创建组:postgres )
# useradd -g postgres postgres            (命令解释:useradd -g 用户组 用户

# mkdir -p /usr/local/pgsql/data             (创建一个data 目录)
# chown postgres /usr/local/pgsql/data ( 改变data的权限为postgres用户)
# su - postgres                                       ( 切换操作用户为 postgres)

14、初始化数据库

$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data/

(提示:初始化数据库的操作为: ./initdb -D /usr/local/pgsql/data initdb把用户指定的选项转换成对应的参数,通过外部程序调用的方式执行postgres程序。

postgres程序在这种方式下将进入bootstrap模式创建数据集簇,并读取后端接口postgres.bki文件来创建模板数据库。)

15、启动数据库

$ /usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data/ -l logfile start(启动数据库)

/usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data/ stop                (停止数据库)

/usr/local/pgsql/bin/pg_ctl restart -D /usr/local/pgsql/data/ -m fast (重启数据库)

二、postgreSQL配置

1、修改postgresql.conf,修改主要的配置参数。

修改前可以先备份一下

$ cp postgresql.conf postgresql.conf_bak

$ vim /usr/local/pgsql/data/postgresql.conf

修改listen_addresses = '*'    前面的#号需要去掉(按/键输入listen_addresses可以快速查找该行。)默认参数是‘localhost‘ 只监听本机IP修改为’*‘后,

可以让远端的其它设备访问 。另外没有vim 可以使用# yum install -y vim 安装vim文本编辑工具。

2、修改postgresql.conf,修改数据库的访问权限。

$ vim /usr/local/pgsql/data/pg_hba.conf

添加以下,表示主机所有IP都可以访问。

host            all             all               0.0.0.0/0           trust

 

3、添加环境变量

$ su                             (输入密码后切换为root管理员)

# cd /home/postgres   (之前我们创建了一个postgres的用户所以这里有这个目录)

# vim .bash_profile  

添加

export PGHOME=/usr/local/pgsql

export PGDATA=/usr/local/pgsql/data

PATH=$PATH:$HOME/bin:$PGHOME/bin

# source .bash_profile (使修改生效)

4、设置开机自启动

# cd /usr/local/pgsql/postgresql-12.1/contrib/start-scripts (这里有个文件名叫linux的文件,它是linux系统的启动脚本)

由于这个文件权限没有设置为X可以执行权限,我们需要设置它为可运行。

# chmod a+x linux

# cp linux /etc/init.d/postgresql   (复制linux文件到/etc/init.d目录下,并更名postgresql)

# vim linux /etc/init.d/postgresql

查看

prefix=/usr/local/pgsql    (安装程序的文件路径)

PGDATA="/usr/local/pgsql/data" (数据存放目录)

如果和自己的路径一致就不需要修改了,按ESC键 ,然后:q退出编辑。

# chkconfig --add postgresql (添加开机启动项目)

# chkconfig  (看下是否设置成功)

4、设置系统配置,开放默认的5432端口

如果CentOS6 使用iptables执行以下步骤。

# vim /etc/sysconfig/iptables

添加

-A INPUT -p tcp -m tcp --dport 5432 -j ACCEPT   

# cd /etc/init.d/iptables restart (重启服务)

 

如果CentOS7 有使用firewall防火墙执行以下步骤。

# firewall-cmd --zone=public --list-ports

# firewall-cmd --zone=public --add-port=5432/tcp --permanent  (添加5432端口)

# firewall-cmd --reload  (重启防火墙)

5、启动服务

# service postgresql start

 

6、查看PostgreSQL服务

# ps -ef | grep postgres

7、设置默认密码

PostgreSQL安装后会自动创建一个用户,名为postgres

# su - postgres  (默认密码为空,切换到postgres用户)

# psql -U postgres 

postgres=#   ALTER USER postgres with encrypted password 'asd111'; (asd111密码自由设置)

postgres=#   \q (可退出)

 

三、使用阿里云的5432端口打开

1、选择-安全组-配置规则

 

 

 

 

 

确定后就开放了5432端口了。

2、使用pgAdmin连接数据库

配置IP,5432端口,用户,密码:asd111 就可以连接了。

 

 

 

参考链接:

https://blog.csdn.net/min0324/article/details/85019434 

https://blog.csdn.net/joy_chou12/article/details/89351634

https://www.cnblogs.com/Paul-watermelon/p/10654303.html

 

四:具体安装步骤

 

 

1:软件下载
[root@VM_0_2_centos bin]# cd /home/
[root@VM_0_2_centos home]# ls
centos  dbbak  oracle  sfeishui
[root@VM_0_2_centos home]# mkdir postgres
[root@VM_0_2_centos home]# ls
centos  dbbak  oracle  postgres  sfeishui
[root@VM_0_2_centos home]# cd /usr/local/src
[root@VM_0_2_centos home]#   wget https://ftp.postgresql.org/pub/source/v12.5/postgresql-12.5.tar.gz   #我是手动下载的  然后上传到linux服务器的 
[root@VM_0_2_centos src]# tar -zxvf postgresql-12.5.tar.gz   #解压 
[root@VM_0_2_centos src]# clear
[root@VM_0_2_centos src]# ls
jdk-8u281-linux-x64.rpm  postgresql-12.5  postgresql-12.5.tar.gz
[root@VM_0_2_centos src]# 
[root@VM_0_2_centos src]# pwd
/usr/local/src
[root@VM_0_2_centos src]# ls
jdk-8u281-linux-x64.rpm  postgresql-12.5  postgresql-12.5.tar.gz
[root@VM_0_2_centos src]# pwd
/usr/local/src
[root@VM_0_2_centos src]# cd /usr/local/
[root@VM_0_2_centos local]# ls
apache-tomcat-9.0.41  apache-tomcat-9.0.41.zip  bin  etc  games  include  jdk1.7  lib  lib64  libexec  posql  qcloud  sbin  share  src  tomcat8  tomcat8_old  tomcat9  yd.socket.server
[root@VM_0_2_centos local]# mkdir pgsql
[root@VM_0_2_centos local]# ls
apache-tomcat-9.0.41  apache-tomcat-9.0.41.zip  bin  etc  games  include  jdk1.7  lib  lib64  libexec  pgsql  posql  qcloud  sbin  share  src  tomcat8  tomcat8_old  tomcat9  yd.socket.server
[root@VM_0_2_centos pgsql]# ls
[root@VM_0_2_centos pgsql]# pwd
/usr/local/pgsql
[root@VM_0_2_centos pgsql]# mv  /usr/local/src/postgresql-12.5  /usr/local/pgsql/postgresql-12.5
[root@VM_0_2_centos pgsql]# ls
postgresql-12.5 
[root@VM_0_2_centos pgsql]# cd postgresql-12.5/  #进入移动后的目录
[root@VM_0_2_centos postgresql-12.5]# ls
aclocal.m4  config  configure  configure.in  contrib  COPYRIGHT  doc  GNUmakefile.in  HISTORY  INSTALL  Makefile  README  src
[root@VM_0_2_centos postgresql-12.5]# pwd
/usr/local/pgsql/postgresql-12.5 
[root@VM_0_2_centos postgresql-12.5]# ./configure    #(如果要安装到自定义目录,这里修改为  # ./configure --prefix= /usr/local/pgsql  红字部分是你的自定义路径)
[root@VM_0_2_centos postgresql-12.5]# echo $?    #echo 一下返回是否为0, 0表示无错误
0
#发现没有相关包依次安装
[root@VM_0_2_centos postgresql-12.5]# yum install -y bison
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package bison.x86_64 0:3.0.4-2.el7 will be installed
--> Processing Dependency: m4 >= 1.4 for package: bison-3.0.4-2.el7.x86_64
--> Running transaction check
---> Package m4.x86_64 0:1.4.16-10.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================================================================================
 Package                                                 Arch                                                     Version                                                          Repository                                            Size
==============================================================================================================================================================================================================================================
Installing:
 bison                                                   x86_64                                                   3.0.4-2.el7                                                      os                                                   674 k
Installing for dependencies:
 m4                                                      x86_64                                                   1.4.16-10.el7                                                    os                                                   256 k

Transaction Summary
==============================================================================================================================================================================================================================================
Install  1 Package (+1 Dependent package)

Total download size: 931 k
Installed size: 2.6 M
Downloading packages:
(1/2): m4-1.4.16-10.el7.x86_64.rpm                                                                                                                                                                                     | 256 kB  00:00:00     
(2/2): bison-3.0.4-2.el7.x86_64.rpm                                                                                                                                                                                    | 674 kB  00:00:00     
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                                                                         6.8 MB/s | 931 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : m4-1.4.16-10.el7.x86_64                                                                                                                                                                                                    1/2 
  Installing : bison-3.0.4-2.el7.x86_64                                                                                                                                                                                                   2/2 
  Verifying  : m4-1.4.16-10.el7.x86_64                                                                                                                                                                                                    1/2 
  Verifying  : bison-3.0.4-2.el7.x86_64                                                                                                                                                                                                   2/2 

Installed:
  bison.x86_64 0:3.0.4-2.el7                                                                                                                                                                                                                  

Dependency Installed:
  m4.x86_64 0:1.4.16-10.el7                                                                                                                                                                                                                   

Complete!
[root@VM_0_2_centos postgresql-12.5]# yum install -y flex
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package flex.x86_64 0:2.5.37-6.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================================================================================
 Package                                                Arch                                                     Version                                                           Repository                                            Size
==============================================================================================================================================================================================================================================
Installing:
 flex                                                   x86_64                                                   2.5.37-6.el7                                                      os                                                   293 k

Transaction Summary
==============================================================================================================================================================================================================================================
Install  1 Package

Total download size: 293 k
Installed size: 740 k
Downloading packages:
flex-2.5.37-6.el7.x86_64.rpm                                                                                                                                                                                           | 293 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : flex-2.5.37-6.el7.x86_64                                                                                                                                                                                                   1/1 
  Verifying  : flex-2.5.37-6.el7.x86_64                                                                                                                                                                                                   1/1 

Installed:
  flex.x86_64 0:2.5.37-6.el7                                                                                                                                                                                                                  

Complete!
[root@VM_0_2_centos postgresql-12.5]# yum install -y readline-devel
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package readline-devel-6.2-11.el7.x86_64 already installed and latest version
Nothing to do
[root@VM_0_2_centos postgresql-12.5]# yum install -y zlib-devel
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package zlib-devel-1.2.7-19.el7_9.x86_64 already installed and latest version
Nothing to do
[root@VM_0_2_centos postgresql-12.5]#  

#编译
[root@VM_0_2_centos postgresql-12.5]# pwd
/usr/local/pgsql/postgresql-12.5
[root@VM_0_2_centos postgresql-12.5]# make
#安装
[root@VM_0_2_centos postgresql-12.5]# pwd
/usr/local/pgsql/postgresql-12.5
[root@VM_0_2_centos postgresql-12.5]# make install

#创建,添加postgres 用户到 postgres组

[root@VM_0_2_centos postgresql-12.5]# groupadd postgres    (创建组:postgres )
[root@VM_0_2_centos postgresql-12.5]# useradd -g postgres postgres     (命令解释:useradd -g 用户组 用户 ) 
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
[root@VM_0_2_centos postgresql-12.5]# mkdir -p /usr/local/pgsql/data     (创建一个data 目录)
[root@VM_0_2_centos postgresql-12.5]# chown postgres /usr/local/pgsql/data   ( 改变data的权限为postgres用户)
[root@VM_0_2_centos postgresql-12.5]# su - postgres                          ( 切换操作用户为 postgres)

-bash-4.2$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data/  
#(提示:初始化数据库的操作为: ./initdb -D /usr/local/pgsql/data initdb把用户指定的选项转换成对应的参数,通过外部程序调用的方式执行postgres程序。postgres程序在这种方式下将进入bootstrap模式创建数据集簇,并读取后端接口postgres.bki文件来创建模板数据库。)
 
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale "en_US.utf8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

fixing permissions on existing directory /usr/local/pgsql/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... PRC
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok

initdb: warning: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.

Success. You can now start the database server using:

    /usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data/ -l logfile start

#启动数据库
[root@192 postgresql-12.5]# su - postgres
-bash-4.2$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data/
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale "en_US.UTF-8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

fixing permissions on existing directory /usr/local/pgsql/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... Asia/Shanghai
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok

initdb: warning: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.

Success. You can now start the database server using:

    /usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data/ -l logfile start

-bash-4.2$ ls

二、postgreSQL配置
1、修改postgresql.conf,修改主要的配置参数。

-bash-4.2$ cd /usr/local/pgsql/data/
-bash-4.2$ ls
base          pg_hba.conf    pg_notify     pg_stat      pg_twophase  postgresql.auto.conf
global        pg_ident.conf  pg_replslot   pg_stat_tmp  PG_VERSION   postgresql.conf
pg_commit_ts  pg_logical     pg_serial     pg_subtrans  pg_wal
pg_dynshmem   pg_multixact   pg_snapshots  pg_tblspc    pg_xact
-bash-4.2$ pwd
/usr/local/pgsql/data
-bash-4.2$ 
-bash-4.2$ cp postgresql.conf postgresql.conf_bak  #修改前可以先备份一下
-bash-4.2$ ls
base          pg_hba.conf    pg_notify     pg_stat      pg_twophase  postgresql.auto.conf
global        pg_ident.conf  pg_replslot   pg_stat_tmp  PG_VERSION   postgresql.conf
pg_commit_ts  pg_logical     pg_serial     pg_subtrans  pg_wal       postgresql.conf_bak
pg_dynshmem   pg_multixact   pg_snapshots  pg_tblspc    pg_xact
-bash-4.2$ 


$ vim /usr/local/pgsql/data/postgresql.conf
修改listen_addresses = '*'    前面的#号需要去掉(按/键输入listen_addresses可以快速查找该行。)默认参数是‘localhost‘ 只监听本机IP修改为’*‘后,
可以让远端的其它设备访问 。另外没有vim 可以使用# yum install -y vim 安装vim文本编辑工具。
2、修改postgresql.conf,修改数据库的访问权限。
$ vim /usr/local/pgsql/data/pg_hba.conf
添加以下,表示主机所有IP都可以访问。
host            all             all               0.0.0.0/0           trust




 3、添加环境变量

su: Authentication failure
-bash-4.2$ su 
Password: 
[root@VM_0_2_centos data]# 
[root@VM_0_2_centos data]# cd /home/postgres/
[root@VM_0_2_centos postgres]# 

[root@VM_0_2_centos postgres]# cat .bash_profile
cat: .bash_profile: No such file or directory
[root@VM_0_2_centos postgres]# vim .bash_profile
[root@VM_0_2_centos postgres]# cat .bash_profile
#添加
export PGHOME=/usr/local/pgsql
export PGDATA=/usr/local/pgsql/data
PATH=$PATH:$HOME/bin:$PGHOME/bin
[root@VM_0_2_centos postgres]# 

4、设置开机自启动

[root@VM_0_2_centos postgres]# cd /usr/local/pgsql/postgresql-12.5/contrib/start-scripts/
[root@VM_0_2_centos start-scripts]# 
[root@VM_0_2_centos start-scripts]# ls -all
total 20
drwxrwxrwx  3 1107 1107 4096 Nov 10  2020 .
drwxrwxrwx 56 1107 1107 4096 Nov 10  2020 ..
-rw-r--r--  1 1107 1107 1467 Nov 10  2020 freebsd
-rw-r--r--  1 1107 1107 3552 Nov 10  2020 linux
drwxrwxrwx  2 1107 1107 4096 Nov 10  2020 macos
[root@VM_0_2_centos start-scripts]# chmod a+x linux  # 由于这个文件权限没有设置为X可以执行权限,我们需要设置它为可运行。
[root@VM_0_2_centos start-scripts]# ls -all
total 20
drwxrwxrwx  3 1107 1107 4096 Nov 10  2020 .
drwxrwxrwx 56 1107 1107 4096 Nov 10  2020 ..
-rw-r--r--  1 1107 1107 1467 Nov 10  2020 freebsd
-rwxr-xr-x  1 1107 1107 3552 Nov 10  2020 linux
drwxrwxrwx  2 1107 1107 4096 Nov 10  2020 macos
[root@VM_0_2_centos start-scripts]# 

[root@VM_0_2_centos start-scripts]# cp linux /etc/init.d/postgresql    #(复制linux文件到/etc/init.d目录下,并更名postgresql)
[root@VM_0_2_centos start-scripts]# 

查看

prefix=/usr/local/pgsql    (安装程序的文件路径)
PGDATA="/usr/local/pgsql/data" (数据存放目录)
如果和自己的路径一致就不需要修改了,按ESC键 ,然后:q退出编辑。

[root@VM_0_2_centos start-scripts]# chkconfig --add postgresql   #(添加开机启动项目)
[root@VM_0_2_centos start-scripts]# chkconfig  #(看下是否设置成功)

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

jexec              0:off    1:on    2:on    3:on    4:on    5:on    6:off
netconsole         0:off    1:off    2:off    3:off    4:off    5:off    6:off
network            0:off    1:off    2:on    3:on    4:on    5:on    6:off
postgresql         0:off    1:off    2:on    3:on    4:on    5:on    6:off
[root@VM_0_2_centos start-scripts]# 

4、设置系统配置,开放默认的5432端口

[root@VM_0_2_centos start-scripts]# firewall-cmd --zone=public --list-ports
FirewallD is not running
[root@VM_0_2_centos start-scripts]# firewall-cmd --zone=public --list-ports
FirewallD is not running
[root@VM_0_2_centos start-scripts]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@VM_0_2_centos start-scripts]# systemctl start firewalld
[root@VM_0_2_centos start-scripts]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: active (running) since Fri 2021-11-12 16:48:11 CST; 7s ago
     Docs: man:firewalld(1)
 Main PID: 15850 (firewalld)
   CGroup: /system.slice/firewalld.service
           └─15850 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

Nov 12 16:48:10 VM_0_2_centos systemd[1]: Starting firewalld - dynamic firewall daemon...
Nov 12 16:48:11 VM_0_2_centos systemd[1]: Started firewalld - dynamic firewall daemon.
[root@VM_0_2_centos start-scripts]# firewall-cmd --zone=public --list-ports

[root@VM_0_2_centos start-scripts]# firewall-cmd --zone=public --add-port=5432/tcp --permanent  
success
[root@VM_0_2_centos start-scripts]#  firewall-cmd --reload
success
[root@VM_0_2_centos start-scripts]# systemctl stop firewalld
[root@VM_0_2_centos start-scripts]# 

启动服务
[root@VM_0_2_centos start-scripts]# service postgresql start
Starting PostgreSQL: ok
[root@VM_0_2_centos start-scripts]# 

6、查看PostgreSQL服务
# ps -ef | grep postgres

[root@VM_0_2_centos start-scripts]# ps -ef |grep postgres
root     10206 30122  0 16:08 pts/3    00:00:00 su - postgres
postgres 10207 10206  0 16:08 pts/3    00:00:00 -bash
postgres 16283     1  0 16:49 ?        00:00:00 /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data
postgres 16285 16283  0 16:49 ?        00:00:00 postgres: checkpointer   
postgres 16286 16283  0 16:49 ?        00:00:00 postgres: background writer   
postgres 16287 16283  0 16:49 ?        00:00:00 postgres: walwriter   
postgres 16288 16283  0 16:49 ?        00:00:00 postgres: autovacuum launcher   
postgres 16289 16283  0 16:49 ?        00:00:00 postgres: stats collector   
postgres 16290 16283  0 16:49 ?        00:00:00 postgres: logical replication launcher   
root     16421 12537  0 16:50 pts/3    00:00:00 grep --color=auto postgres
[root@VM_0_2_centos start-scripts]# 



设置默认密码
[root@VM_0_2_centos start-scripts]# su - postgres
Last login: Fri Nov 12 16:49:36 CST 2021 on pts/3
-bash-4.2$ psql -U postgres
psql (12.5)
Type "help" for help.

postgres=# ALTER USER postgres with encrypted password '123456'; 
ALTER ROLE
postgres=# 

 

 

 

 

 

 

posted @ 2021-11-12 15:45  一品堂.技术学习笔记  阅读(450)  评论(0编辑  收藏  举报