安装PG

yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
yum install postgresql12
yum install postgresql12-server

dnf install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
dnf -qy module disable postgresql
dnf install -y postgresql13
dnf install -y postgresql13-server

dnf install postgresql13-contrib

# 编辑postgres.conf配置文件并重启数据库
shared_preload_libraries = 'pg_stat_statements'

# Increase the max size of the query strings Postgres records
track_activity_query_size = 2048

# Track statements generated by stored procedures as well
pg_stat_statements.track = all

# 默认抓取最大数量 5000
pg_stat_statements.max = 5000

create extension pg_stat_statements ;
CREATE EXTENSION

$ pg_ctl init -D /pgdata
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 /pgdata ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... America/New_York
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/pgsql-13/bin/pg_ctl -D /pgdata -l logfile start