postgresql – 无法访问postgres文件pg_hba.conf

我运行db：create时收到此错误：

FATAL:  Peer authentication Failed for user "wandrr"
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `initialize'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `new'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `connect'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:326:in `initialize'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout'
/home/jack/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection'
/home/jack/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection'
/home/jack/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection'
....Edit out 40 more of these warnings...
/home/jack/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `eval'
/home/jack/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `<main>'
Couldn't create database for {"adapter"=>"postgresql","encoding"=>"unicode","database"=>"wandrr_test","pool"=>5,"username"=>"wandrr","password"=>nil}

所以我发现我必须编辑pg_hba.conf问题是……它无法打开.它一直告诉我,我没有权限使用此文件.那么我如何获得许可？我正在运行ubuntu 12.10和rails 1.9.3以及postgres 9.1

首先记下系统中pg_hba.conf的位置.如果您不知道但可以连接,请使用PgAdmin-III或psql连接到Pg并运行：

SHOW hba_file;

获取pg_hba.conf的位置.它的位置非常标准;在Ubuntu上它将在/etc/postgresql/[major.minor]/main/pg_hba.conf中,例如/etc/postgresql/9.1/main/pg_hba.conf.在大多数其他发行版中,它将直接位于/ var / lib / pgsql /或/ var / lib / postgresql中,无论是直接还是在版本化目录中.

要编辑此文件,您必须首先指定完整路径或将目录更改为其位置.说：

sudo vi /etc/postgresql/9.1/main/pg_hba.conf

如果您更喜欢更友好的文本编辑器：

sudo nano /etc/postgresql/9.1/main/pg_hba.conf

或者用你喜欢的编辑器替换“nano”,比如gedit.

保存更改后,请记住重新加载Postgresql服务以使其生效.在Ubuntu上你想要：

pg_ctlcluster 9.1 main reload