env centos7

1.更新包，避免安装时出错

yum update

2. PostgreSQL: Linux downloads (Red Hat family)

sudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
sudo yum install -y postgresql15-server
sudo /usr/pgsql-15/bin/postgresql-15-setup initdb
sudo systemctl enable postgresql-15
sudo systemctl start postgresql-15

3. 安装遇到libzstd >= 1.4.0 问题

wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/l/libzstd-1.5.5-1.el7.x86_64.rpm
wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/l/llvm5.0-devel-5.0.1-7.el7.x86_64.rpm
wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/l/llvm5.0-5.0.1-7.el7.x86_64.rpm
wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/l/llvm5.0-libs-5.0.1-7.el7.x86_64.rpmyum install -y ./libzstd-1.5.5-1.el7.x86_64.rpm
yum install -y centos-release-scl-rh llvm5*

4.重新安装：

sudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
sudo yum install -y postgresql15-server
sudo /usr/pgsql-15/bin/postgresql-15-setup initdb
sudo systemctl enable postgresql-15
sudo systemctl start postgresql-15

5.修改监听端口

/var/lib/pgsql/15/data/postgresql.conf
 

#listen_addresses = 'localhost'         # what IP address(es) to listen on;
listen_addresses = '0.0.0.0'            # what IP address(es) to listen on;

简单监听所有ip

默认仅监听localhost

6.修改访问权限

/var/lib/pgsql/15/data/pg_hba.conf

新增：

host    all             all             192.168.1.0/24         password

# METHOD can be "trust", "reject", "md5", "password", "scram-sha-256",
# "gss", "sspi", "ident", "peer", "pam", "ldap", "radius" or "cert".
# Note that "password" sends passwords in clear text; "md5" or
# "scram-sha-256" are preferred since they send encrypted passwords.# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     peer
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256
host    all             all             192.168.1.0/24         password

pg_hba.conf解决问题：

Connect failed:  no pg_hba.conf entry for host 

7.开放防火墙

firewall-cmd --zone=public --add-port=5432/tcp --permanent
配置生效
firewall-cmd --reload   # 配置立即生效

参考：命令

开放TCP端口
firewall-cmd --zone=public --add-port=80/tcp --permanent   # 开放tcp80端口
firewall-cmd --zone=public --add-port=443/tcp --permanent   # 开放tcp443端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent   # 开放tcp3306端口
firewall-cmd --zone=public --add-port=6379/tcp --permanent   # 开放tcp6379端口开放UDP端口
firewall-cmd --zone=public --add-port=9595/udp --permanent   # 开放udp9595端口关闭TCP端口
firewall-cmd --zone=public --remove-port=80/tcp --permanent  #关闭tcp5672端口
firewall-cmd --zone=public --remove-port=443/tcp --permanent  #关闭tcp443端口
firewall-cmd --zone=public --remove-port=3306/tcp --permanent  #关闭tcp3306端口
firewall-cmd --zone=public --remove-port=6379/tcp --permanent  #关闭tcp6379端口关闭UDP端口
firewall-cmd --zone=public --remove-port=9595/udp--permanent  #关闭udp9595端口配置生效
firewall-cmd --reload   # 配置立即生效查看防火墙所有开放的端口
firewall-cmd --zone=public --list-ports关闭防火墙
如果要开放的端口太多，嫌麻烦，可以关闭防火墙
systemctl stop firewalld.service查看防火墙状态
firewall-cmd --state查看监听的端口
TCP：netstat -ntlp
UDP: netstat -nulp

8.修改postgres密码

# sudo -u postgres psqlpsql (15.4)
Type "help" for help.postgres=# ALTER USER postgres WITH PASSWORD 'xxxxxxxxxxx';
ALTER ROLE

使用修改后的密码登录测试ok

参考：

PostgreSQL 连接问题 FATAL: no pg_hba.conf entry for host_org.postgresql.util.psqlexception: fatal: no pg_hb-CSDN博客

PostgreSQL: Linux downloads (Red Hat family)

centos7.9安装postgresql15报错_vah101的博客-CSDN博客

PostgreSQL 配置文件 postgresql.conf 及 postgresql.auto.conf-CSDN博客

Centos7开放端口及查看端口开放-腾讯云开发者社区-腾讯云 (tencent.com)

如何查看PostgreSQL 的配置文件在哪里 - 简书 (jianshu.com)

PostgreSQL数据库默认用户postgres的密码 - 郑道杰 - 博客园 (cnblogs.com)