【www.bbyears.com--PostgreSQL】
运行下面的命令创建名为mydb的数据库
代码如下createdb mydb
得到一个错误：psql: FATAL: role "terry" does not exist， terry是我的机器名， 在postgresql数据库中没有名为terry的role， 所以会报出这个错误， 只要加上-U参数来指定一个存在的role就可以了，所以我将上面的命令改为:
代码如下createdb mydb -U postgres
又得到一个错误：psql: FATAL: Peer authentication failed for user "postgres",
解决办法如下:
1. 运行下面的命令编辑pg_hba.conf文件
代码如下sudo gedit /etc/postgresql/9.1/main/pg_hba.conf
2. 将
代码如下# Database administrative login by Unix domain socket
local all postgres peer
改为
# Database administrative login by Unix domain socket
local all postgres trust
3. 保存后执行下面的命令重新加载配置文件:
代码如下sudo /etc/init.d/postgresql reload
再执行 createdb mydb1 -U postgres ， 已经成功的创建了mydb1数据库.
看一老外的文件没译，各位有需要可参考。
I figured I’d share getting setup on my Ubuntu machine.
Installing
sudo apt-get install postgresql
Creating User
createdb book
createuser: could not connect to database postgres: FATAL: role "myusername" does not exist
The bit above can be resolved with the following (replacing myusername for yours)
sudo -u postgres createuser myusername
Shall the new role be a superuser? (y/n) y
Then this should work
createdb book
Installing Extensions
There should be more problems when trying to create the 5 extensions
psql book -c "CREATE EXTENSION tablefunc"
ERROR: could not open extension control file "/usr/share/postgresql/9.1/extension/tablefunc.control": No such file or directory
You can fix it by just downloading a package.
sudo apt-get install postgresql-contrib
Downloading the postgresql-contrib packages will give the ability to use the following five commands:
psql book -c "CREATE EXTENSION tablefunc"
psql book -c "CREATE EXTENSION fuzzystrmatch"
psql book -c "CREATE EXTENSION pg_trgm"
psql book -c "CREATE EXTENSION cube"
psql book -c "CREATE EXTENSION dict_xsyn"
And now you should be good to go!
Thanks to the post by Tanner Watson for the CREATE EXTENSION command