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Yin Silver

2007-Aug-06 07:15 UTC

problem with rails_root

Hi everybody,

   I used a openseradmin who is based on rubygem (i suppose ), so when i
start my server of this openseradmin in the http://localhost:3000, i
reciceved some messages like this:


SocketError in LoginController#login

getaddrinfo: Name or service not known

RAILS_ROOT: script/../config/..
Application Trace | Framework Trace | Full Trace

/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`real_connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:389:in
`connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:152:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`mysql_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`connection_without_query_cache=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/query_cache.rb:54:in
`connection=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:230:in
`retrieve_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in
`connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1456:in
`quote_bound_value''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`gsub''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1416:in
`sanitize_sql_array''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1387:in
`sanitize_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1163:in
`add_conditions!''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1096:in
`construct_finder_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:997:in
`find_every''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:991:in
`find_initial''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:417:in
`find''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/deprecated_finders.rb:23:in
`find_first_without_deprecation''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/deprecation.rb:94:in
`find_first''
app/models/user.rb:7:in `authenticate''
app/controllers/login_controller.rb:11:in `login''

/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`real_connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:389:in
`connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:152:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`mysql_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`connection_without_query_cache=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/query_cache.rb:54:in
`connection=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:230:in
`retrieve_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in
`connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1456:in
`quote_bound_value''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`gsub''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1416:in
`sanitize_sql_array''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1387:in
`sanitize_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1163:in
`add_conditions!''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1096:in
`construct_finder_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:997:in
`find_every''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:991:in
`find_initial''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:417:in
`find''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/deprecated_finders.rb:23:in
`find_first_without_deprecation''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/deprecation.rb:94:in
`find_first''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`perform_action_without_filters''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:632:in
`call_filter''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:634:in
`call_filter''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:619:in
`perform_action_without_benchmark''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue''
/usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/rescue.rb:83:in
`perform_action''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`process_without_filters''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:624:in
`process_without_session_management_support''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:114:in
`process''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:330:in
`process''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:41:in
`dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:113:in
`handle_dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in
`service''
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr/local/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
/usr/local/lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:23:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:63:in
`dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/servers/webrick.rb:59
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
script/server:3

/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
`real_connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:389:in
`connect''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:152:in
`initialize''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`new''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/mysql_adapter.rb:82:in
`mysql_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in
`connection_without_query_cache=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/query_cache.rb:54:in
`connection=''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:230:in
`retrieve_connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in
`connection''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1456:in
`quote_bound_value''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`gsub''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1427:in
`replace_bind_variables''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1416:in
`sanitize_sql_array''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1387:in
`sanitize_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1163:in
`add_conditions!''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1096:in
`construct_finder_sql''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:997:in
`find_every''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:991:in
`find_initial''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:417:in
`find''
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/deprecated_finders.rb:23:in
`find_first_without_deprecation''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/deprecation.rb:94:in
`find_first''
app/models/user.rb:7:in `authenticate''
app/controllers/login_controller.rb:11:in `login''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`perform_action_without_filters''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:632:in
`call_filter''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:634:in
`call_filter''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:619:in
`perform_action_without_benchmark''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue''
/usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/rescue.rb:83:in
`perform_action''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`send''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`process_without_filters''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:624:in
`process_without_session_management_support''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:114:in
`process''
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:330:in
`process''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:41:in
`dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:113:in
`handle_dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in
`service''
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr/local/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
/usr/local/lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:23:in `start''
/usr/local/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:63:in
`dispatch''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/servers/webrick.rb:59
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in''
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require''
script/server:3

Request

Parameters: {"user_login"=>"openser",
"user_password"=>"openserrw",
"login"=>"Login >>"}

Show session dump

---
return-to: /
flash: !map:ActionController::Flash::FlashHash {}


Response
Headers: {"cookie"=>[],
"Cache-Control"=>"no-cache"}

So can anybody tell me what does it mean? and how to resolve it? Thank
you very much!!!!
-- 
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Shai Rosenfeld

2007-Aug-06 07:29 UTC

head link

Re: problem with rails_root

the error is not of Rails_Root, it is of a Db error:
> SocketError in LoginController#login
> 
> getaddrinfo: Name or service not known
>
>/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/vendor/mysql.rb:111:in
> `real_connect''
is the mysql running?
-- 
Posted via http://www.ruby-forum.com/.

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Yin Silver

2007-Aug-06 07:45 UTC

head link

Re: problem with rails_root

Hi,thank you very much for your help! I am waiting.

Yes Mysql is running. And can you tell me anything more? I don''t 
understand ruby and rail. But I have to use openseradmin. :(  Thanks!
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Shai Rosenfeld

2007-Aug-06 10:33 UTC

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Re: problem with rails_root

it''s really a pretty general server - error ;

something is wrong with the app, or the db, because the connection 
between the two isn''t working.
it could be a couple of things, but my first guess is a prob with the 
mysql -

did you set up the openseradmin database in mysql? set up a user to 
access the db? set the correct permissions in the database.yml file?

i don''t know if you did your setup according to this link but in case 
you haven''t:

http://openseradmin.sourceforge.net/docs.php

...anyway, i''d check the db to see if there are any problems.
basically what you should be having is this:

*) the app
    *) the correct permissions to
       access the db (RAILS_ROOT/config/database.yml)

       # btw, RAILS_ROOT is a constant that stores the path to your app
       # on your system - it is basically a string that is:
       # /path/to/your/app/

*) mysql
    *) the db exists

hope some of the above helps
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Yin Silver

2007-Aug-06 13:51 UTC

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Re: problem with rails_root

Hi, thank you very much!! I think there''s something wrong with mysql 
too. Because I have to do: gem install mysql before intalling 
openseradmin. And then I have
ruby extconf.rb install mysql
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... yes
checking for mysql_query() in -lmysqlclient... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/bin/ruby
        --with-mysql-config
        --without-mysql-config
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/lib
        --with-mysqlclientlib
        --without-mysqlclientlib
        --with-mlib
        --without-mlib
        --with-mysqlclientlib
        --without-mysqlclientlib
        --with-zlib
        --without-zlib
        --with-mysqlclientlib
        --without-mysqlclientlib
        --with-socketlib
        --without-socketlib
        --with-mysqlclientlib
        --without-mysqlclientlib
        --with-nsllib
        --without-nsllib
        --with-mysqlclientlib
        --without-mysqlclientlib


Gem files will remain installed in 
/usr/local/lib/ruby/gems/1.8/gems/mysql-2.7 for inspection.
Results logged to 
/usr/local/lib/ruby/gems/1.8/gems/mysql-2.7/gem_make.out


So I went to /usr/local/lib/ruby/gems/1.8/gems/mysql-2.7 to install 
mysql-2.7
I did like what said in README:

#ruby extconf.rb --with-mysql-dir=/usr/local/mysql
#make
#ruby ./test

and I got many error just like:

.....
 93) Error:
test_fetch(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

 94) Error:
test_fetch(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

 95) Error:
test_fetch_bigint(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

 96) Error:
test_fetch_bigint(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

 97) Error:
test_fetch_bigint_unsigned(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

 98) Error:
test_fetch_bigint_unsigned(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

 99) Error:
test_fetch_binary(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

100) Error:
test_fetch_binary(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

101) Error:
test_fetch_blob(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

102) Error:
test_fetch_blob(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

103) Error:
test_fetch_char(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

104) Error:
test_fetch_char(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

105) Error:
test_fetch_date(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

106) Error:
test_fetch_date(TC_MysqlStmt2):
NoMethodError: undefined method `close'' for nil:NilClass
    ./test.rb:418:in `teardown''

107) Error:
test_fetch_datetime(TC_MysqlStmt2):
Mysql::Error: Access denied for user
''root''@''localhost'' (using password:
NO)
    ./test.rb:414:in `new''
    ./test.rb:414:in `setup''

...

So what does that mean??? Thank you very much!!!
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