linux 安装redmine 遇到的问题

1、编译安装ruby-2.3.1时

　　需要先安装libyaml、libyaml-devel

2、 安装gem install rake

　　　　ERROR: Loading command: install (LoadError)
　　　　cannot load such file -- zlib
　　　　ERROR: While executing gem ... (NoMethodError)
　　　　undefined method `invoke_with_build_args' for nil:NilClass

安装zlib-devel后，进入ruby源码文件夹
　　安装ruby自身提供的zlib包
　　#cd ext/zlib
　　#ruby ./extconf.rb
　　#make
　　#make install

　　ERROR: While executing gem ... (Gem::Exception)

　　Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

2、gem install rmagick 出错时

　　yum install ImageMagick-devel

3、Gem::LoadError: Specified 'mysql' for database adapter, but the gem is not loaded. Add `gem 'mysql'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).

　　在Gemfile 添加 gem "mysql" 然后执行 bundle install

4、LoadError: libmysqlclient.so.18: cannot open shared object file: No such file or directory

　　解决方案 /alidata/server/mysql-5.6.21/lib 写入 /etc/ld.so.conf 然后运行ldconfig重建/etc/ld.so.cache

5、ActionView::Template::Error (incompatible character encodings: UTF-8 and ASCII-8BIT)

　　解决方案：config/database.yml 下的 adpter修改mysql2