🌻下载二进制安装包：https://www.postgresql.org/ftp/source/

准备工作

# 检查是否已安装
rpm -qa | grep postgres# 创建安装用户
groupadd postgres
useradd -g postgres -d /home/postgres -s /bin/bash postgres# 创建安装目录
mkdir /opt/postgres
mv postgresql-9.2.4.tar.gz /opt/postgres
chown -R postgres:postgres /opt/postgres

编译安装

编译安装：

yum install -y zlib-devel gcc makecd /opt/postgres
tar -xvf postgresql-9.2.4.tar.gzcd postgresql-9.2.4/
./configuremake && make install

添加环境变量：

chown -R postgres:postgres /opt/postgres
su - postgresecho 'export PATH=$PATH:/usr/local/pgsql/bin' >> .bash_profile
echo 'export PGDATA=/pgdata' >> .bash_profile
echo 'export PGLOG=/pgdata/server.log' >> .bash_profilesource .bash_profile

初始化数据库

创建数据目录，初始化数据库：

# 创建数据目录
mkdir /pgdata
chown -R postgres:postgres /pgdata# 以postgres用户初始化数据库
su - postgres
initdb -D /pgdata -U postgres# 启动数据库
pg_ctl -D /pgdata -l /pgdata/server.log start

检查数据库日志、端口和进程：

[postgres@dbhost ~]$ tail -f /pgdata/server.log 
LOG:  could not bind IPv4 socket: Address already in use
HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
LOG:  database system was shut down at 2023-10-10 11:03:49 CST
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started
^C
[postgres@dbhost ~]$ ss -antpl | grep 5432
LISTEN     0      208    127.0.0.1:5432                     *:*                   users:(("postgres",pid=68688,fd=4))
LISTEN     0      208      [::1]:5432                  [::]:*                   users:(("postgres",pid=68688,fd=3))[postgres@dbhost ~]$ ps -ef | grep postgres
root      68464  53923  0 11:03 pts/0    00:00:00 su - postgres
postgres  68465  68464  0 11:03 pts/0    00:00:00 -bash
postgres  68688      1  0 11:05 pts/0    00:00:00 /usr/local/pgsql/bin/postgres -D /pgdata
postgres  68702  68688  0 11:05 ?        00:00:00 postgres: checkpointer process   
postgres  68703  68688  0 11:05 ?        00:00:00 postgres: writer process   
postgres  68704  68688  0 11:05 ?        00:00:00 postgres: wal writer process   
postgres  68705  68688  0 11:05 ?        00:00:00 postgres: autovacuum launcher process   
postgres  68706  68688  0 11:05 ?        00:00:00 postgres: stats collector process   
postgres  68772  68465  0 11:06 pts/0    00:00:00 ps -ef
postgres  68773  68465  0 11:06 pts/0    00:00:00 grep --color=auto postgres

使用psql命令连接到数据库：

[postgres@dbhost ~]$ psql
psql (9.2.4)
Type "help" for help.postgres=# \lList of databasesName    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +|          |          |             |             | postgres=CTc/postgrestemplate1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +|          |          |             |             | postgres=CTc/postgres
(3 rows)postgres=# \c postgres
You are now connected to database "postgres" as user "postgres".
postgres=# \d
No relations found.
postgres=# \dSList of relationsSchema   |              Name               | Type  |  Owner   
------------+---------------------------------+-------+----------pg_catalog | pg_aggregate                    | table | postgrespg_catalog | pg_am                           | table | postgrespg_catalog | pg_amop                         | table | postgrespg_catalog | pg_amproc                       | table | postgrespg_catalog | pg_attrdef                      | table | postgrespg_catalog | pg_authid                       | table | postgrespg_catalog | pg_available_extension_versions | view  | postgrespg_catalog | pg_available_extensions         | view  | postgres
...
postgres=# 
postgres=# \q

修改配置文件

PostgreSQL的数据库配置文件是位于数据目录下的postgresql.conf和pg_hba.conf。

# 修改共享内存为服务器物理内存的25%
[postgres@dbhost ~]$ cat /pgdata/postgresql.conf | grep shared_buffer
shared_buffers = 32MB            # min 128kB
#wal_buffers = -1            # min 32kB, -1 sets based on shared_buffers[postgres@dbhost ~]$ vi /pgdata/postgresql.conf 
[postgres@dbhost ~]$ cat /pgdata/postgresql.conf | grep shared_buffer
shared_buffers = 1024MB            
#shared_buffers = 32MB            # min 128kB
#wal_buffers = -1            # min 32kB, -1 sets based on shared_buffers# 修改监听地址
[postgres@dbhost ~]$ cat /pgdata/postgresql.conf | grep -n listen
59:#listen_addresses = 'localhost'        # what IP address(es) to listen on;[postgres@dbhost ~]$ vi /pgdata/postgresql.conf 
[postgres@dbhost ~]$ cat /pgdata/postgresql.conf | grep -n listen
59:listen_addresses = '*'                # 添加此行
60:#listen_addresses = 'localhost'        # what IP address(es) to listen on;# 添加允许连接的客户端地址
[postgres@dbhost ~]$ cat /pgdata/pg_hba.conf | grep -A2 'IPv4 local connections'
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:[postgres@dbhost ~]$ vi /pgdata/pg_hba.conf 
[postgres@dbhost ~]$ cat /pgdata/pg_hba.conf | grep -A2 'IPv4 local connections'
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
host    all             all             0.0.0.0/0               trust      # 添加此行

重启数据库：

echo $PGDATA
pg_ctl stop
pg_ctl -D $PGDATA -l $PGLOG start

检查配置参数：

postgres=# show data_directory;data_directory 
----------------/pgdata
(1 row)postgres=# show shared_buffers;shared_buffers 
----------------1GB
(1 row)postgres=# select name,setting from pg_settings where name='data_directory';name      | setting 
----------------+---------data_directory | /pgdata
(1 row)