1.本地登陆postgresql,建库授权，设置密码
服务器本地登陆postgresql数据库（默认是不需要密码的）
postgres@localhost ~]$ psql
psql.bin (9.5.9)
Type "help" for help.
创建角色，并且给角色设置密码:
postgres=# create user testwjw with password 'Zykj@5&^%996';
CREATE ROLE
修改数据库用户和密码：
postgres=# alter user testwjw with password '558996';
ALTER ROLE
指定字符集创建数据库testdb1，并且授权给testwjw
postgres=# create database testdb1 with encoding='utf8' owner=testwjw;
CREATE DATABASE
授权：
postgres=# grant all privileges on database testdb1 to testwjw;
GRANT
2.修改postgresql.conf文件中的端口和监听主机:
postsql默认安装后是监听本机127.0.0.1 默认端口是5432,是不能够远程登陆的，所以要修改监听主机地址，同时修改默认的端口为:36985
postgresql数据库的配置文件是:postgresql.conf,所在位置是：postgresql初始化时所指定的data数据目录下：
[postgres@localhost ~]$ ll /data/postgresql/data/postgresql.conf
-rw------- 1 postgres postgres 21305 Oct 3 11:18 /data/postgresql/data/postgresql.conf
[postgres@localhost ~]$ egrep "listen_addresses|5432"/data/postgresql/data/postgresql.conf
listen_addresses = 'localhost'# what IP address(es) to listen on;
port = 5432# (change requires restart)
修改监听主机为*，端口为:36985
[postgres@localhost ~]$ egrep "listen_addresses|36985" /data/postgresql/data/postgresql.conf
listen_addresses = '*'# what IP address(es) to listen on;
port = 36985# (change requires restart)
修改配置文件pg_hba.conf ，允许远程ip访问本地数据库，以及设置服务器本地登陆postgresql数据库要求输入密码才可以登陆
[postgres@localhost ~]$ egrep "60.223.153.25|127.0.0.1" /data/postgresql/data/pg_hba.conf
host all all 60.223.153.25/32 trust
host all all 127.0.0.1/32 password
#host replication postgres 127.0.0.1/32 trust
允许 60.223.153.25ip访问服务器postgresql数据库
psql -Utestwjw -dpostgres -p36985 -h 127.0.0.1 这样访问数据库127.0.0.1数据库必须输入密码才可以
3.重启postgresql服务生效：
[postgres@localhost ~]$ pg_ctl -D /data/postgresql/data -l /data/postgresql/log/postgres.log restart
waiting for server to shut down....LOG: received fast shutdown request
LOG: aborting any active transactions
LOG: autovacuum launcher shutting down
LOG: shutting down
LOG: database system is shut down
done
server stopped
server starting
[postgres@localhost ~]$ netstat -lntup|grep postgres
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 0.0.0.0:36985 0.0.0.0:* LISTEN 6472/postgres
4.登陆数据库:
[postgres@localhost ~]$ psql
psql.bin: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
[postgres@localhost ~]$ psql -Utestwjw -dpostgres -p36985 -h 127.0.0.1
Password for user testwjw:
psql.bin: fe_sendauth: no password supplied
[postgres@localhost ~]$ psql -Utestwjw -dpostgres -p36985 -h 127.0.0.1
Password for user testwjw:
psql.bin (9.5.9)
Type "help" for help.
postgres=> \q
[postgres@localhost ~]$ psql -Utestwjw -dtestdb1 -p36985 -h 127.0.0.1
Password for user testwjw:
psql.bin (9.5.9)
Type "help" for help.
testdb1=> select * from t;
id | nan | note
----+-----+-------
1 | t | TRUE
2 | f | FALSE
3 | t | tRue
4 | f | fAlse
11 | | null
11 | | NULL
7 | t | 't'
8 | f | 'f'
9 | t | 'yes'
10 | f | '0'
(10 rows)
testdb1=>
[postgres@localhost ~]$ psql -Utestwjw -dtestdb1 -p36985
psql.bin (9.5.9)
Type "help" for help.
testdb1=> \q
[postgres@localhost ~]$ psql -Utestwjw -dtestdb2 -p36985
psql.bin (9.5.9)
Type "help" for help.
testdb2=> \q
