# gem install dbi Fetching: deprecated-2.0.1.gem (100%) Fetching: dbi-0.4.5.gem (100%) Successfully installed deprecated-2.0.1 Successfully installed dbi-0.4.5 2 gems installed Installing ri documentation for deprecated-2.0.1... Installing ri documentation for dbi-0.4.5... Installing RDoc documentation for deprecated-2.0.1... Installing RDoc documentation for dbi-0.4.5...楽勝。次、dbd-pgだ。
# gem install dbd-pg Fetching: pg-0.12.2.gem (100%) Building native extensions. This could take a while... ERROR: Error installing dbd-pg: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb checking for pg_config... no No pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_config checking for libpq-fe.h... no Can't find the 'libpq-fe.h header *** 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/bin/ruby --with-pg --without-pg --with-pg-dir --without-pg-dir --with-pg-include --without-pg-include=${pg-dir}/include --with-pg-lib --without-pg-lib=${pg-dir}/lib --with-pg-config --without-pg-config --with-pg_config --without-pg_config Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/pg-0.12.2 for inspection. Results logged to /usr/lib/ruby/gems/1.9.1/gems/pg-0.12.2/ext/gem_make.outぐぬぬ。libpq-fe.hがないって?あーん?develいれてなかったから入れてみる。
#yum install postgresql91-devel.x86_64 Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.nara.wide.ad.jp * epel: ftp.kddilabs.jp * extras: ftp.nara.wide.ad.jp * updates: ftp.nara.wide.ad.jp Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package postgresql91-devel.x86_64 0:9.1.2-1PGDG.rhel5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ========================================================================================== Package Arch Version Repository Size ========================================================================================== Installing: postgresql91-devel x86_64 9.1.2-1PGDG.rhel5 pgdg91 1.6 M Transaction Summary ========================================================================================== Install 1 Package(s) Upgrade 0 Package(s) Total download size: 1.6 M Is this ok [y/N]: y Downloading Packages: postgresql91-devel-9.1.2-1PGDG.rhel5.x86_64.rpm | 1.6 MB 00:01 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : postgresql91-devel 1/1 Installed: postgresql91-devel.x86_64 0:9.1.2-1PGDG.rhel5 Complete!うっし、もう一回!
# gem install dbd-pg Building native extensions. This could take a while... ERROR: Error installing dbd-pg: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb checking for pg_config... no No pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_config checking for libpq-fe.h... no Can't find the 'libpq-fe.h header *** 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/bin/ruby --with-pg --without-pg --with-pg-dir --without-pg-dir --with-pg-include --without-pg-include=${pg-dir}/include --with-pg-lib --without-pg-lib=${pg-dir}/lib --with-pg-config --without-pg-config --with-pg_config --without-pg_config Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/pg-0.12.2 for inspection. Results logged to /usr/lib/ruby/gems/1.9.1/gems/pg-0.12.2/ext/gem_make.outぐぎぎぎぎ。pg_configがないって?見落としてた。言われるままに再チャレンジ!
#gem install dbd-pg -- --with-pg_config=/usr/pgsql-9.1/bin/pg_config Building native extensions. This could take a while... Fetching: dbd-pg-0.3.9.gem (100%) Successfully installed pg-0.12.2 Successfully installed dbd-pg-0.3.9 2 gems installed Installing ri documentation for pg-0.12.2... Installing ri documentation for dbd-pg-0.3.9... Installing RDoc documentation for pg-0.12.2... Installing RDoc documentation for dbd-pg-0.3.9...お、うまくいったっぽい?
試してみる。
# irb irb(main):001:0> require 'dbi' => true irb(main):002:0> dbh = DBI.connect('dbi:Pg:dozaemon:localhost','dozaemon','') => #<DBI::DatabaseHandle:0x00・・・以下略> irb(main):003:0> dbh.select_one('select version()') => ["PostgreSQL 9.1.2 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-51), 64-bit"] irb(main):004:0> exitでけた!
#昨日のセットアップのままだとパスワードはいらないっす。
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