pgsql添加删除用户权限，配置公网访问说明

进入pgsql:   psql -U username -d dbname;

创建用户：create role u1 with login password '123456';

查看角色信息：select * from pg_roles;

赋予u1对表的只读权限

grant select on t1 to u1;   //t1表

grant select on t1 in schema public to u1; //所有表

删除权限：revoke select on t1 from u1;

删除用户：drop role u1;

修改密码：alter user postgres with password 'foobar';

#修改监听端口和地址

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

#修改

　　listen_addresses = '*'

　　port = 5432



#允许远程连接：

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

#修改

　　host all all 0.0.0.0/0 trust

#启动

service postgresql start
#关闭

service postgresql stop

推荐参考：
https://my.oschina.net/aven92/blog/528943?p=1 http://blog.csdn.net/italyfiori/article/details/43966109 http://www.jb51.net/article/40300.htm http://blog.csdn.net/smstong/article/details/17138355