第一章 引言
此文档主要描述Postgre数据库，基于Red Hat Enterprise Linux Server release 6.5 的操作系统上安装Postgre数据库的文档衍生而来。此文档包括Postgre数据库的多种安装方式。
1.1 背景
本文档介绍Postgre 数据库基于linux 6.5平台的三种安装方式。
第二章 部署前规划
在部署系统之前，需要对安装存储位置这两方面进行规划。下面分别描述了存储进行规划时，需要注意的地方。
2.1 环境规划
本次环境规划包括postgres用户的家目录，软件安装目录，及数据库目录三大部分。
目录名称 | 存放位置 |
Postgres用户家目录 | /home/postgres |
软件存放目录 | /opt/soft |
安装目录 | /usr/local/ |
数据目录 | /monchickey/pg_data |
2.2 软件功能
PostgreSQL is an object-relational database management system (ORDBMS) based on POSTGRES.
PostgreSQL is an open-source descendant of this original Berkeley code. It supports a large part of the SQL standard and offers many modern features:
complex queries
foreign keys
triggers
updatable views
transactional integrity
multiversion concurrency control
Also, PostgreSQL can be extended by the user in many ways, for example by adding new data types
functions
operators
aggregate functions
index methods
procedural languages
2.3 文档及下载介绍
下面列出了本次实施Postgre可供参考的文档，及软件包的下载路径。
安装方式 | 安装包名称 | 下载地址 |
tar.gz文件解压直接安装 | postgresql-10.7-2-linux-x64-binaries.tar.gz | https://www.enterprisedb.com/download-postgresql-binaries |
编译安装 | postgresql-11.0.tar.bz2 | http://ftp.postgresql.org/pub/source |
Rpm包安装 | postgresql-server | http://yum.postgresql.org https://download.postgresql.org
|
postgresql-contrib | ||
postgresql | ||
postgresql-libs | ||
Postgre官方文档 | https://www.postgresql.org/docs/10/index.html |
第三章 安装流程
3.1 解压安装
在操作系统安装完成后，上传安转包后按照目录规划安装postgre数据库。
1）安装部署参考文档
下载页：https://www.enterprisedb.com/download-postgresql-binaries
软件包：postgresql-10.7-2-linux-x64-binaries.tar.gz
2）创建postgre安装用户
useradd postgres
passwd postgres3）创建postgre安装目录及数据目录
mkdir -p /monchickey/pgsql_data
chown -R postgres:postgres /monchickey/pgsql_data
Chmod -R 775 /monchickey/pgsql_data4）解压安装
tar -zxvf postgresql-10.7-2-linux-x64-binaries.tar.gz -C /monchickey
[root@rhel6 monchickey]# ll
total 12
drwxrwxrwx 9 root root 4096 Apr 10 03:24 pgsql
drwx------ 19 postgres postgres 4096 Apr 15 11:33 pgsql_data5）初始化数据库
cd /monchickey/pgsql/bin
/monchickey/pgsql/bin/initdb -D /monchickey/pgsql_data/
eg:
[postgres@rhel6 bin]$ ./initdb -D /monchickey/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 /monchickey/pgsql_data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting dynamic shared memory implementation ... posix
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
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:
./pg_ctl -D /monchickey/pgsql_data/ -l logfile start6）启动数据库
./pg_ctl -D /monchickey/pgsql_data/ -l logfile start
eg:
[postgres@rhel6 bin]$ ./pg_ctl -D /monchickey/pgsql_data/ -l logfile start
waiting for server to start..../bin/sh: logfile: Permission denied
stopped waiting
pg_ctl: could not start server
Examine the log output.
解决方法：
[root@rhel6 monchickey]# chmod -R 777 pgsql
[root@rhel6 monchickey]# ll
total 8
drwxrwxrwx 9 root root 4096 Apr 10 03:24 pgsql
[postgres@rhel6 bin]$ ./pg_ctl -D /monchickey/pgsql_data/ -l logfile start
waiting for server to start.... done
server started7）停止数据库
./pg_ctl -D /monchickey/pgsql_data/ stop3.2 使用rpm包安装
使用rpm包安装postgre数据库。需要使用4个rpm包。如果认为系统自带的postgre数据库安装包版本过低，从https://yum.postgresql.org网站上下载。本次安装使用rhel 6.5自带的安装包。
1）安装包信息及顺序
rpm -ivh postgresql92-libs-9.2.4-1PGDG.rhel6.i686.rpm
rpm -ivh postgresql92-9.2.4-1PGDG.rhel6.i686.rpm
rpm -ivh postgresql92-server-9.2.4-1PGDG.rhel6.i686.rpm
rpm -ivh postgresql92-contrib-9.2.4-1PGDG.rhel6.i686.rpm2）或者使用yum源进行安装
yum install -y postgresql-libs
yum install -y postgresql
Yum install -y postgresql-server
Yum install -y postgresql-contrib3）初始化数据库
[root@rhel6 Packages]# service postgresql initdb
Initializing database: [ OK ]4）启动数据库服务
[root@rhel6 Packages]# service postgresql start
Starting postgresql service: [ OK ]5）查看默认的psql
[postgres@rhel6 ~]$ psql
psql (8.4.18)
Type "help" for help.6）停止数据库服务
[postgres@rhel6 ~]$ exit
logout
[root@rhel6 Packages]# service postgresql stop
Stopping postgresql service: [ OK ]7）卸载数据库
rpm -e postgresql-server
rpm -e postgresql-contrib
rpm -e postgresql
rpm -e postgresql-libs 3.3 编译安装
使用二进制文件进行编译方法，安装postgre数据库。
1）安装包信息及下载地址
Pg软件下载地址：http://ftp.postgresql.org/pub/source
Pg安装包名称 ：postgresql-11.0.tar.bz2
参考文档地址 ：https://www.postgresql.org/docs/10/installation.html
2）安装前系统检查,参照官方文档的要求，安装软件包
必须的安装包检查：
1：make --version检查
Eg:
[root@rhel6 ~]# make --version
GNU Make 3.81
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
2：gcc检查
[root@rhel6 ~]# rpm -aq gcc
gcc-4.4.7-4.el6.x86_64
可选软件包安装
1：Perl
2：Python
3：OpenSSL
......
3）解压安装包
tar -xjvf postgresql-11.0.tar.bz2 -C /usr/local
Eg：
[root@rhel6 local]# cd postgresql-11.0/
[root@rhel6 postgresql-11.0]# ll
total 744
-rw-r--r-- 1 1107 1107 486 Oct 16 05:12 aclocal.m4
drwxrwxrwx 2 1107 1107 4096 Oct 16 05:14 config
-rwxr-xr-x 1 1107 1107 558874 Oct 16 05:12 configure
-rw-r--r-- 1 1107 1107 83596 Oct 16 05:12 configure.in
drwxrwxrwx 56 1107 1107 4096 Oct 16 05:14 contrib
-rw-r--r-- 1 1107 1107 1192 Oct 16 05:12 COPYRIGHT
drwxrwxrwx 3 1107 1107 4096 Oct 16 05:14 doc
-rw-r--r-- 1 1107 1107 3664 Oct 16 05:12 GNUmakefile.in
-rw-r--r-- 1 1107 1107 284 Oct 16 05:12 HISTORY
-rw-r--r-- 1 1107 1107 72717 Oct 16 05:15 INSTALL
-rw-r--r-- 1 1107 1107 1682 Oct 16 05:12 Makefile
-rw-r--r-- 1 1107 1107 1212 Oct 16 05:12 README
drwxrwxrwx 16 1107 1107 4096 Oct 16 05:15 src4）编译
./configure
问题：
configure: error: readline library not found
If you have readline already installed, see config.log for details on the
failure. It is possible the compiler isn't looking in the proper directory.
Use --without-readline to disable readline support.
原因：
The GNU Readline library is used by default. It allows psql (the PostgreSQL command line SQL interpreter) to remember each command you type, and allows you to use arrow keys to recall and edit previous commands. This is very helpful and is strongly recommended. If you don't want to use it then you must specify the --without-readline option to configure. As an alternative, you can often use the BSD-licensed libedit library, originally developed on NetBSD. The libedit library is GNU Readline-compatible and is used if libreadline is not found, or if --with-libedit-preferred is used as an option to configure. If you are using a package-based Linux distribution, be aware that you need both the readline and readline-devel packages, if those are separate in your distribution.
解决方法：
1：./configure --without-readline
2：安装readline包
rpm -ivh redline
rpm -ivh redline-devel
5）编译并安装
make && make install6）创建postgre用户及相应数据目录
Useradd postgres
Su - postgres
mkdir -P /monkeys/pgsql11_data7）数据库初始化：
/usr/local/pgsql/bin/initdb -D /monchickey/pgsql11_data
Eg:
[postgres@rhel6 bin]$ ./initdb -D /monchickey/pgsql11_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 /monchickey/pgsql11_data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting dynamic shared memory implementation ... posix
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
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:
./pg_ctl -D /monchickey/pgsql11_data -l logfile start8）启动postgre数据库
./pg_ctl -D /monchickey/pgsql11_data -l logfile start
Eg：
[postgres@rhel6 bin]$ ./pg_ctl -D /monchickey/pgsql11_data -l logfile start
waiting for server to start.... done
server started
9）创建数据库
[postgres@rhel6 bin]$ ./createdb test
[postgres@rhel6 bin]$ ./psql
psql (11.0)
Type "help" for help.
postgres=#
Tuples only is on.
postgres=# l
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/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
test | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | 第四章 Postgre数据库简单实用操作
在postgre数据库安装完成后，查看postgre数据库的后台进程，及端口信息来判断postgrep数据库的运行情况。进行简单操作，来尝试连接并使用数据库。
4.1 检查postgre数据库的进程及端口信息
1）查看postgre数据库进程
[postgres@rhel6 bin]$ ps -ef | grep post
root 1946 1 0 08:15 ? 00:00:00 /usr/libexec/postfix/master
postfix 1954 1946 0 08:15 ? 00:00:00 pickup -l -t fifo -u
postfix 1955 1946 0 08:15 ? 00:00:00 qmgr -l -t fifo -u
postgres 3914 1 0 09:39 pts/0 00:00:00 /monchickey/pgsql/bin/postgres -D /monchickey/pgsql_data
postgres 3916 3914 0 09:39 ? 00:00:00 postgres: checkpointer process
postgres 3917 3914 0 09:39 ? 00:00:00 postgres: writer process
postgres 3918 3914 0 09:39 ? 00:00:00 postgres: wal writer process
postgres 3919 3914 0 09:39 ? 00:00:00 postgres: autovacuum launcher process
postgres 3920 3914 0 09:39 ? 00:00:00 postgres: stats collector process
postgres 3921 3914 0 09:39 ? 00:00:00 postgres: bgworker: logical replication launcher 2）查看postgre端口，默认端口号是5432
[postgres@rhel6 ~]$ lsof -i:5432
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
postgres 3914 postgres 3u IPv6 74137 0t0 TCP localhost:postgres (LISTEN)
postgres 3914 postgres 4u IPv4 74138 0t0 TCP localhost:postgres (LISTEN)3）查看psql的帮助信息
[postgres@rhel6 ~]$ psql --help
psql is the PostgreSQL interactive terminal.
Usage:
psql [OPTION]... [DBNAME [USERNAME]]
General options:
-c, --command=COMMAND run only single command (SQL or internal) and exit
-d, --dbname=DBNAME database name to connect to (default: "postgres")
-f, --file=FILENAME execute commands from file, then exit
-l, --list list available databases, then exit
-v, --set=, --variable=NAME=VALUE
set psql variable NAME to VALUE
(e.g., -v ON_ERROR_STOP=1)
-V, --version output version information, then exit
-X, --no-psqlrc do not read startup file (~/.psqlrc)
-1 ("one"), --single-transaction
execute as a single transaction (if non-interactive)
-?, --help[=options] show this help, then exit
--help=commands list backslash commands, then exit
--help=variables list special variables, then exit
Input and output options:
-a, --echo-all echo all input from script
-b, --echo-errors echo failed commands
-e, --echo-queries echo commands sent to server
-E, --echo-hidden display queries that internal commands generate
-L, --log-file=FILENAME send session log to file
-n, --no-readline disable enhanced command line editing (readline)
-o, --output=FILENAME send query results to file (or |pipe)
-q, --quiet run quietly (no messages, only query output)
-s, --single-step single-step mode (confirm each query)
-S, --single-line single-line mode (end of line terminates SQL command)
Output format options:
-A, --no-align unaligned table output mode
-F, --field-separator=STRING
field separator for unaligned output (default: "|")
-H, --html HTML table output mode
-P, --pset=VAR[=ARG] set printing option VAR to ARG (see pset command)
-R, --record-separator=STRING
record separator for unaligned output (default: newline)
-t, --tuples-only print rows only
-T, --table-attr=TEXT set HTML table tag attributes (e.g., width, border)
-x, --expanded turn on expanded table output
-z, --field-separator-zero
set field separator for unaligned output to zero byte
-0, --record-separator-zero
set record separator for unaligned output to zero byte
Connection options:
-h, --host=HOSTNAME database server host or socket directory (default: "local socket")
-p, --port=PORT database server port (default: "5432")
-U, --username=USERNAME database user name (default: "postgres")
-w, --no-password never prompt for password
-W, --password force password prompt (should happen automatically)
For more information, type "?" (for internal commands) or "help" (for SQL
commands) from within psql, or consult the psql section in the PostgreSQL
documentation.
Report bugs to <pgsql-bugs@postgresql.org>.5）psql中sql语法的帮助信息
[postgres@rhel6 bin]$ ./psql
psql (11.0)
Type "help" for help.
postgres=# help
Available help:
ABORT ALTER TEXT SEARCH TEMPLATE CREATE PUBLICATION DROP FUNCTION IMPORT FOREIGN
......6）查看当前数据库列表：
postgres-# l
List of databases
Name | 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/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(3 rows)7）创建数据库
postgres=# CREATE DATABASE dbname WITH OWNER=postgres ENCODING='UTF-8';
CREATE DATABASE8）切换数据库
postgres=# c dbname
You are now connected to database "dbname" as user "postgres".9）查看数据库下所有表
dbname=# create table tab1 (id int,name char(20));
CREATE TABLE
dbname=# d
List of relations
Schema | Name | Type | Owner
--------+------+-------+----------
public | tab1 | table | postgres10）查看表信息
dbname-# d student
Table "public.student"
Column | Type | Collation | Nullable | Default
--------+---------------+-----------+----------+---------
id | integer | | not null |
name | character(32) | | |
number | character(5) | | |
Indexes:
"student_pkey" PRIMARY KEY, btree (id)原创：张红妮，云和恩墨服务部技术顾问；Oracle 运维DBA，对开源数据库也很有研究。
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