OK, it works, i have not been create the database, i an newbie.
#initdb -D ./mydb
#postgres -D ./mydb
#createdb mydb
following above command, then everything ok.
On Oct 12, 2:15 am, coolesting <[email protected]> wrote:
> Hi, guys
>
> I got this error
>
> $ rackup
> ==============================
> /home/app/ruby/lib/ruby/gems/1.9.1/gems/sequel-3.27.0/lib/sequel/adapters/postgres.rb:226:in
> `initialize': PGError: FATAL: database "mydb" does not exist
> (Sequel::DatabaseConnectionError)
> from
> /home/app/ruby/lib/ruby/gems/1.9.1/gems/sequel-3.27.0/lib/sequel/adapters/postgres.rb:226:in
> `new'
> from
> /home/app/ruby/lib/ruby/gems/1.9.1/gems/sequel-3.27.0/lib/sequel/adapters/postgres.rb:226:in
> `connect'
> from
> /home/app/ruby/lib/ruby/gems/1.9.1/gems/sequel-3.27.0/lib/sequel/database/misc.rb:45:in
> `block in initialize'
> from
> /home/app/ruby/lib/ruby/gems/1.9.1/gems/sequel-3.27.0/lib/sequel/connection_pool.rb:92:in
> `call'
>
> I ensure the mydb in my project directory, and the 'ps aux | grep 'postgres'
> ' can gets the running process like this
> ===================================
>
> zcdny 6252 0.0 0.4 47020 4208 pts/0 S+ 01:52 0:00 postgres -D
> ./mydb
> zcdny 6253 0.0 0.0 15192 916 ? Ss 01:52 0:00 postgres:
> logger process
> zcdny 6255 0.0 0.1 47020 1340 ? Ss 01:52 0:00 postgres:
> writer process
> zcdny 6256 0.0 0.1 47020 1112 ? Ss 01:52 0:00 postgres:
> wal writer process
> zcdny 6257 0.0 0.1 47152 1244 ? Ss 01:52 0:00 postgres:
> autovacuum launcher process
> zcdny 6258 0.0 0.0 15188 1024 ? Ss 01:52 0:00 postgres:
> stats collector process
> zcdny 6383 0.0 0.0 4308 732 pts/1 S+ 02:06 0:00 grep
> postgres
>
> my sequel connect
> =================================
>
> 'postgres://localhost/mydb?user=zcdny&password=123456'
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