postgresql 创建一个新的database system

标签: postgresql 建一 database | 发表时间:2012-02-01 15:54 | 作者:qiaoning13256
出处:http://blog.csdn.net

第一步:su postgres

第二步:bash-4.2$ /usr/pgsql-9.1/bin/initdb -D /var/lib/pgsql/9.1/data/  , 回车后出现如下信息

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".


fixing permissions on existing directory /var/lib/pgsql/9.1/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 24MB
creating configuration files ... ok
creating template1 database in /var/lib/pgsql/9.1/data/base/1 ... ok
initializing pg_authid ... ok
initializing dependencies ... ok
creating system views ... ok
loading system objects' descriptions ... ok
creating collations ... ok
creating conversions ... ok
creating dictionaries ... ok
setting privileges on built-in objects ... ok
creating information schema ... ok
loading PL/pgSQL server-side language ... ok
vacuuming database template1 ... ok
copying template1 to template0 ... ok
copying template1 to postgres ... ok


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


Success. You can now start the database server using:


    /usr/pgsql-9.1/bin/postgres -D /var/lib/pgsql/9.1/data
or

    /usr/pgsql-9.1/bin/pg_ctl -D /var/lib/pgsql/9.1/data -l logfile start


第三步:用上边两个命令中的一个启动服务

第四步:创建一个用户(user)

bash-4.2$ createuser qiaoning -P

Enter password for new role: //输入密码
Enter it again: //再次输入密码
Shall the new role be a superuser? (y/n) n //是否是超级用户,选否

Shall the new role be allowed to create databases? (y/n) y //该用户是否可以创建数据库,选是
Shall the new role be allowed to create more new roles? (y/n) n //该用户是否可以创建新的角色,选否

第五步:创建数据库

bash-4.2$ createdb qiaoning --owner=qiaoning   //第一个qiaoning是数据库名称,第二个qiaoning是数据库的拥有者


以上步骤完成后需要修改一些配置文件(主要是访问权限的设置)

第一步:进入刚才创建的database system所在的目录,即: /var/lib/pgsql/9.1/data/

第二步:修改pg_dba.conf,如下

# PostgreSQL Client Authentication Configuration File
# ===================================================
#
# Refer to the "Client Authentication" section in the PostgreSQL
# documentation for a complete description of this file.  A short
# synopsis follows.
#
# This file controls: which hosts are allowed to connect, how clients
# are authenticated, which PostgreSQL user names they can use, which
# databases they can access.  Records take one of these forms:
#
# local      DATABASE  USER  METHOD  [OPTIONS]
# host       DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
# hostssl    DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
# hostnossl  DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
#
# (The uppercase items must be replaced by actual values.)
#
# The first field is the connection type: "local" is a Unix-domain
# socket, "host" is either a plain or SSL-encrypted TCP/IP socket,
# "hostssl" is an SSL-encrypted TCP/IP socket, and "hostnossl" is a
# plain TCP/IP socket.
#
# DATABASE can be "all", "sameuser", "samerole", "replication", a
# database name, or a comma-separated list thereof. The "all"
# keyword does not match "replication". Access to replication
# must be enabled in a separate record (see example below).
#
# USER can be "all", a user name, a group name prefixed with "+", or a
# comma-separated list thereof.  In both the DATABASE and USER fields
# you can also write a file name prefixed with "@" to include names
# from a separate file.
#
# ADDRESS specifies the set of hosts the record matches.  It can be a
# host name, or it is made up of an IP address and a CIDR mask that is
# an integer (between 0 and 32 (IPv4) or 128 (IPv6) inclusive) that
# specifies the number of significant bits in the mask.  A host name
# that starts with a dot (.) matches a suffix of the actual host name.
# Alternatively, you can write an IP address and netmask in separate
# columns to specify the set of hosts.  Instead of a CIDR-address, you
# can write "samehost" to match any of the server's own IP addresses,
# or "samenet" to match any address in any subnet that the server is
# directly connected to.
#
# METHOD can be "trust", "reject", "md5", "password", "gss", "sspi",
# "krb5", "ident", "peer", "pam", "ldap", "radius" or "cert".  Note that
# "password" sends passwords in clear text; "md5" is preferred since
# it sends encrypted passwords.
#
# OPTIONS are a set of options for the authentication in the format
# NAME=VALUE.  The available options depend on the different
# authentication methods -- refer to the "Client Authentication"
# section in the documentation for a list of which options are
# available for which authentication methods.
#
# Database and user names containing spaces, commas, quotes and other
# special characters must be quoted.  Quoting one of the keywords
# "all", "sameuser", "samerole" or "replication" makes the name lose
# its special character, and just match a database or username with
# that name.
#
# This file is read on server startup and when the postmaster receives
# a SIGHUP signal.  If you edit the file on a running system, you have
# to SIGHUP the postmaster for the changes to take effect.  You can
# use "pg_ctl reload" to do that.

# Put your actual configuration here
# ----------------------------------
#
# If you want to allow non-local connections, you need to add more
# "host" records.  In that case you will also need to make PostgreSQL
# listen on a non-local interface via the listen_addresses
# configuration parameter, or via the -i or -h command line switches.

# CAUTION: Configuring the system for local "trust" authentication
# allows any local user to connect as any PostgreSQL user, including
# the database superuser.  If you do not trust all your local users,
# use another authentication method.


# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
host    all             all             192.168.2.0/24          trust #这儿是新加的
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                trust
#host    replication     postgres        127.0.0.1/32            trust
#host    replication     postgres        ::1/128                 trust

第三步:修改postgresql.conf,如下(只摘录了一部分)

#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------

# - Connection Settings -

listen_addresses = '*'#*这儿以前是localhost# what IP address(es) to listen on;
                                        # comma-separated list of addresses;
                                        # defaults to 'localhost', '*' = all
                                        # (change requires restart)
#port = 5432                            # (change requires restart)
max_connections = 100                   # (change requires restart)

好了,大功告成,接下来就连接数据库吧,就一句话:

[root@localhost data]# psql -U qiaoning -d qiaoning -h 192.168.2.118  //第一个qiaoning是user,第二个是database,回车后出现如下信息


psql (9.1.2)
Type "help" for help.


qiaoning=>



























作者:qiaoning13256 发表于2012-2-1 15:54:42 原文链接
阅读:4 评论:0 查看评论

相关 [postgresql 建一 database] 推荐:

postgresql 创建一个新的database system

- - CSDN博客推荐文章
第一步:su postgres. 第二步:bash-4.2$ /usr/pgsql-9.1/bin/initdb -D /var/lib/pgsql/9.1/data/  , 回车后出现如下信息. 第三步:用上边两个命令中的一个启动服务. 第四步:创建一个用户(user). Enter password for new role: //输入密码.

Elasticsearch as Database - taowen - SegmentFault

- -
【北京上地】滴滴出行基础平台部招聘 Elasticsearch 与 Mysql binlog databus 开发工程师. 内推简历投递给: [email protected]. 推销Elasticsearch. 时间序列数据库的秘密(1)—— 介绍. 时间序列数据库的秘密(2)——索引.

Data Guard - Snapshot Standby Database配置

- - 数据库 - ITeye博客
一般情况下,物理standby数据库处于mount状态接收和应用主库的REDO日志,物理standby数据库不能对外提供访问. 如果需要只读访问,那么可以临时以read-only的方式open物理备库,或者配置ACTIVE DATA GUARD,那么物理standby数据库可以进行只读(read-only)访问(比如报表业务查询),但是物理standby数据库不能进行读写操作(read-write).

论文《Architecture of a Database System》小结

- - 掘金 架构
原文: https://dsf.berkeley.edu/papers/fntdb07-architecture.pdf. 本文主要讨论DBMS的体系结构,包括进程模型、并行架构、存储系统设计、事物系统实现、查询处理器和优化器架构,以及常见的共享组件和工具. 数据库系统是最早广泛部署的在线服务器系统之一,因此,它开创了不仅跨越数据管理,而且跨越应用程序、操作系统和网络服务的设计解决方案.

PostgreSQL 9.1发布

- Kai Chen - Solidot
开源数据库项目PostgreSQL发布了v9.1版. 新版本主要的特性包括:同步复制,序列化快照隔离,支持基于列的排序,近邻邻近索引,外来数据封装,支持SELinux许可控制,等等.

PostgreSQL 9.2发布

- - Solidot
时隔一年之后,开源数据库PostgreSQL发布了v9.2版. 主要新特性包括:原生JSON支持,覆盖索引(covering indexes),改进复制和性能等. PostgreSQL显著改善了可伸缩性:线性可扩展性支持最高64核,仅扫描索引,减少CPU消耗;改进垂直可伸缩性:有效利用大服务器硬件资源,锁管理,仅访问索引等底层操作允许数据库引擎处理更大的工作负荷——每秒最高35万只读查询,每秒写入1.4万条数据.

Mysql 和 Postgresql 对比

- - 膘叔
vampire告诉我服务器上安装好了postgreSQL,他也一直在推荐这个玩意,所以了解了一下. Mysql 使用太广泛了,以至于我不得不将一些应用从mysql 迁移到postgresql, 很多开源软件都是以Mysql 作为数据库标准,并且以Mysql 作为抽象基础的,但是具体使用过程中,发现Mysql 有很多问题,所以都迁移到postgresql上了,转一个Mysql 和Postgresql 对比的文章:.

PostgreSQL与MySQL比较

- - 数据库 - ITeye博客
通过执行 MySQL 命令(mysqld)启动实例. 一个实例可以管理一个或多个数据库. 一台服务器可以运行多个 mysqld 实例. 一个实例管理器可以监视 mysqld 的各个实例. 通过执行 Postmaster 进程(pg_ctl)启动实例. 一个实例可以管理一个或多个数据库,这些数据库组成一个集群.

PostgreSQL新手入门

- - 阮一峰的网络日志
自从MySQL被Oracle收购以后, PostgreSQL逐渐成为开源关系型数据库的首选. 本文介绍PostgreSQL的安装和基本用法,供初次使用者上手. 以下内容基于Debian操作系统,其他操作系统实在没有精力兼顾,但是大部分内容应该普遍适用. 首先,安装PostgreSQL客户端. 然后,安装PostgreSQL服务器.

PostgreSQL配置优化

- - CSDN博客推荐文章
转载请注明原文出处: http://blog.csdn.net/roddick621. PostgreSQL配置优化. 200W(整个数据库大小约为300M). 准备命令:pgbench -i -s 20 pgbenchdb. 测试命令:pgbench -r -j4 -c4 -T60 testdb.