首先引用百度介绍下redmine：
Redmine是用Ruby开发的基于web的项目管理软件，是用ROR框架开发的一套跨平台项目管理系统，据说是源于Basecamp的ror版而来，支持多种数据库，有不少自己独特的功能，例如提供wiki、新闻台等，还可以集成其他版本管理系统和BUG跟踪系统，例如Perforce、SVN、CVS、TD等等。这种web形式的项目管理系统通过“项目（Project）”的形式把成员、任务（问题）、文档、讨论以及各种形式的资源组织在一起，大家参与更新任务、文档等内容来推动项目的进度，同时系统利用时间线索和各种动态的报表形式来自动给成员汇报项目进度。
在安装redmine前，我们需要先来看下各个组件的版本要求：
| Redmine version | Supported Ruby versions | Rails version used |
|---|---|---|
| current trunk | ruby 1.9.3, 2.0.01, 2.1, 2.2 | Rails 4.2 |
| trunk < r13482 | ruby 1.8.72, 1.9.2, 1.9.3, 2.0.01, 2.1, jruby-1.7.6 | Rails 3.2 |
| 3.0 | ruby 1.9.3, 2.0.01, 2.1, 2.2 | Rails 4.2 |
| 2.6 | ruby 1.8.72, 1.9.2, 1.9.3, 2.0.01, 2.1, jruby-1.7.6 | Rails 3.2 |
1.安装基本的软件环境
yum -y install libyaml-devel zlib-devel curl-devel openssl-devel httpd-devel apr-devel apr-util-devel gcc ruby-devel gcc-c++ make postgresql-devel ImageMagick-devel sqlite-devel perl-LDAP mod_perl perl-Digest-SHA
2.安装apache和mysql,并配置redmine数据库
rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm安装完成后，service mysqld start，并进行相关数据库配置
yum install mysql-community-server httpd -y
mysql> create database redmine_db character set utf8;
Query OK, 1 row affected (0.00 sec)
mysql> create user 'redmine'@'localhost' identified by 'redmine';
Query OK, 0 rows affected (0.00 sec)
mysql> grant all privileges on redmine.* to 'redmine'@'localhost';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
3.iptables设置
如果服务器开了防火墙，我们需要进行相关设置
/sbin/iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
/sbin/iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT
4.安装php环境
yum -y install php php-mysql php-gd php-imap php-ldap php-mbstring php-odbc php-pear php-xml php-xmlrpc php-pecl-apc php-soap
5.安装ruby环境
\curl -L https://get.rvm.io | bash
source /etc/profile.d/rvm.sh
[root@usvr-126 ~]# source /etc/profile.d/rvm.sh
[root@usvr-126 ~]# rvm list known
# MRI Rubies
[ruby-]1.8.6[-p420]
[ruby-]1.8.7[-head] # security released on head
[ruby-]1.9.1[-p431]
[ruby-]1.9.2[-p330]
[ruby-]1.9.3[-p551]
[ruby-]2.0.0[-p643]
[ruby-]2.1.4
[ruby-]2.1[.5]
[ruby-]2.2[.1]
[ruby-]2.2-head
2.6版本需要ruby 支持的版本，在这我们选择1.9.3 稳定版
rvm install 1.9.3
[root@usvr-126 ~]# ruby -v6.安装rubygems
ruby 1.9.3p551 (2014-11-13 revision 48407) [x86_64-linux]
yum -y install rubygems
7.安装redmine的apache支持，这样可以通过apache访问
gem install passenger
passenger-install-apache2-module
命令执行完后按照提示进行配置http：
vim /etc/httpd/conf.d/passenger.conf
LoadModule passenger_module /usr/local/rvm/gems/ruby-1.9.3-p551/gems/passenger-5.0.5/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
PassengerRoot /usr/local/rvm/gems/ruby-1.9.3-p551/gems/passenger-5.0.5
PassengerDefaultRuby /usr/local/rvm/gems/ruby-1.9.3-p551/wrappers/ruby
</IfModule>
vim /etc/http/conf.d/redmine.conf <VirtualHost *:80> ServerName www.yourhost.com # !!! Be sure to point DocumentRoot to 'public'! DocumentRoot /somewhere/public <Directory /somewhere/public> # This relaxes Apache security settings. AllowOverride all # MultiViews must be turned off. Options -MultiViews # Uncomment this if you're on Apache >= 2.4: #Require all granted </Directory> </VirtualHost>由于我们的redmine还没有安装，因此路径暂时还不配置，等按完redmine后在来配置具体路径，注意root目录必须是redmine下的public目录。
8.安装redmine
wget http://www.redmine.org/releases/redmine-2.6.3.tar.gz
tar -zxvf redmine-2.6.3.tar.gz
mv redmine-2.6.3 /data
安装完毕后，我们需要在httpd的redmine.conf中进行修改：
<VirtualHost *:80>
ServerName 192.168.3.126
# !!! Be sure to point DocumentRoot to 'public'!
DocumentRoot /data/redmine-2.6.3/public
ErrorLog logs/redmine_error_log
<Directory /data/redmine-2.6.3/public>
Options Indexes ExecCGI FollowSymLinks
Order allow,deny
Allow from all
# This relaxes Apache security settings.
AllowOverride all
# MultiViews must be turned off.
Options -MultiViews
# Uncomment this if you're on Apache >= 2.4:
#Require all granted
</Directory>
</VirtualHost>
不要忘了service httpd restart
9.redmine相关配置cd /data/redmine-2.6.3/public
cp database.yml.example database.yml
注意：官网中说MySQL database using ruby 1.9 (adapter must be set to mysql2)，因此我们需要mysql2
vim database.yml
production:
adapter: mysql2
database: redmine
host: localhost
username: redmine
password: "redmine"
encoding: utf8
10.安装rails，安装过程中会出现很多问题，我们来一一解决吧。
cd /data/redmine-2.6.3
gem install bundler
bundle install
这里会报错：
An error occurred while installing rack-cache (1.2), and Bundler cannot continue.我们按照提示安装所需组件
Make sure that `gem install rack-cache -v '1.2'` succeeds before bundling.
gem install rack-cache -v '1.2'
然后再次bundle install，报错：
An error occurred while installing nokogiri (1.6.6.2), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.6.2'` succeeds before bundling.
按照提示gem install nokogiri -v '1.6.6.2',再运行bundle install，报错：
ERROR: Error installing nokogiri:按照提示：
ERROR: Failed to build gem native extension.
If you are using Bundler, tell it to use the option:
bundle config build.nokogiri --use-system-libraries
bundle install
我们来输入命令：
bundle config build.nokogiri --use-system-libraries
bundle install
再次报错：
An error occurred while installing json (1.8.2), and Bundler cannot continue.
Make sure that `gem install json -v '1.8.2'` succeeds before bundling.
按照提示安装 gem install json -v '1.8.2'，然后再次bundle install
又报错：
An error occurred while installing railties (3.2.21), and Bundler cannot continue.按照提示安装 gem install railties -v '3.2.21'，然后再次bundle install
Make sure that `gem install railties -v '3.2.21'` succeeds before bundling.
又报错：
An error occurred while installing mysql2 (0.3.18), and Bundler cannot continue.执行gem install mysql2 -v '0.3.18'报错：
Make sure that `gem install mysql2 -v '0.3.18'` succeeds before bundling.
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing
我们执行yum install mysql-devel后成功安装，接着bundle install
报错：
An error occurred while installing redcarpet (2.3.0), and Bundler cannot continue.按照提示安装 gem install redcarpet -v '2.3.0'，然后再次bundle install
Make sure that `gem install redcarpet -v '2.3.0'` succeeds before bundling.
Please report any bugs. See https://github.com/gemhome/rmagick/compare/RMagick_2-13-2...master and https://github.com/rmagick/rmagick/issues/18
ok,终于安装成功。
rake generate_secret_token
初始化redmine数据库表名
RAILS_ENV=production rake db:migrate
RAILS_ENV=production rake redmine:load_default_data
11.修改fastcgi
cd /data/redmine-2.6.3/public12.安装mod_fcgi
mkdir plugin_assets
cp dispatch.fcgi.example dispatch.fcgi
cp htaccess.fcgi.example .htaccess
rpm --import https://fedoraproject.org/static/0608B895.txt13.创建文件目录
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
yum -y install mod_fcgid
mkdir -p /data/redmine-2.6.3/files由于我们的files目录在redmine根目录下，因此configuration不用配置了，如果files目录在其他地方，我们需要
cd /data/redmine-2.6.3/config
cp configuration.yml.example configuration.yml
vim configuration.yml
attachments_storage_path: /var/redmine/files
14.最后启动redmine
cd /data/redmine-2
chown -R apache:apache redmine-2.6.3
chmod -R 755 redmine-2.6.3
service httpd restart
测试吧，让我们访问下看看
默认的用户名和密码都为admin
另外若apache访问不了，我们可以先用redmine自己的启动方式启动，然后ip:3000端口进行访问，如果访问成功，则redmine配置没问题，可能是apache的配置问题或漏改配置了
下面是redmine的启动方式,
[root@usvr-126 redmine-2.6.3]# cd /data/redmine-2.6.3
[root@usvr-126 redmine-2.6.3]# ruby script/rails server webrick -e production
=> Booting WEBrick
=> Rails 3.2.21 application starting in production on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2015-03-28 01:09:30] INFO WEBrick 1.3.1
[2015-03-28 01:09:30] INFO ruby 1.9.3 (2014-11-13) [x86_64-linux]
[2015-03-28 01:09:30] INFO WEBrick::HTTPServer#start: pid=14577 port=3000
好了，现在已经凌晨1:23，就介绍到这里吧，这是第二次配，相比第一次容易很多，根据错误提示来就可，希望能给大家带来帮助。