环境：

• 操作系统为ubuntu13.**版本，非长期支持版。
• 安装目录：/opt/redmine-2.3.1-0/
• 所有者用户：root

安装过程：

1. 备份2.3.1数据库

sudo /opt/redmine-2.3.1-0/mysql/bin/mysqldump -u bitnami -p  bitnami_redmine > /home/erick/redmineback/2.3.1backup.sql

2. 备份2.3.1的配置文件和files目录（上传文件）

cp /opt/redmine-2.3.1-0/apps/redmine/htdocs/config/database.yml /home/erick/redmineback/
cp /opt/redmine-2.3.1-0/apps/redmine/conf/redmine.conf /home/erick/redmineback/
 cp /opt/redmine-2.3.1-0/apps/phpmyadmin/conf/phpmyadmin.conf /home/erick/redmineback/
cp /opt/redmine-2.3.1-0/apache2/conf/httpd.conf /home/erick/redmineback/
mkdir /home/erick/redmineback/files
cp /opt/redmine-2.3.1-0/apps/redmine/htdocs/files/* /home/erick/redmineback/files
cp /opt/redmine-2.3.1-0/apps/redmine/htdocs/public/favicon.ico /home/erick/redmineback/

3. 下载并安装最新redmine bitnami3.2.2安装包，目录与之前的区分开

/opt/redmine-3.2.2-0/

4. 备份3.2.2的数据库

sudo /opt/redmine-3.2.2-0/mysql/bin/mysqldump -u bitnami -p  bitnami_redmine > /home/erick/redmineback/3.2.2backup.sql

5. 删除并创建3.2.2的数据库

sudo /opt/redmine-3.2.2-0/mysql/bin/mysql -u bitnami -p
DROP DATABASE bitnami_redmine;
CREATE DATABASE bitnami_redmine;
quit  

6. 用2.3.1的备份数据恢复到3.2.2的数据库中

通过phpmyadmin的导入功能实现

7. 迁移3.2.2的数据库

cd /opt/redmine-3.2.2-0/apps/redmine/htdocs
sudo /opt/redmine-3.2.2-0/ruby/bin/ruby bin/rake db:migrate RAILS_ENV=production

8. 修改3.2.2的配置文件

设置apache，启用gogs,修改apache参数文件:

/opt/redmine-3.2.2-0/apache2/conf/httpd.conf

在最后增加以下配置信息：

<VirtualHost *:80>
     DocumentRoot  "/opt/redmine-3.2.2-0/apps/redmine/htdocs/public/"
     ServerName qa.yncic.com
     ServerAlias qa.yncic.com
</VirtualHost>
<VirtualHost *:80>
        ServerAdmin webmaster@domain.tld
        ServerName git.yncic.com
        ProxyRequests Off
        <Proxy *>
        Order deny,allow
        Allow from all
        </Proxy>
        ProxyPass / http://localhost:3000/
        ProxyPassReverse / http://localhost:3000/
</VirtualHost>

9. 拷贝files目录到3.2.2中

sudo cp -r /opt/redmine-2.3.1-0/apps/redmine/htdocs/files/* /opt/redmine-3.2.2-0/apps/redmine/htdocs/files/
sudo chown -R daemon:daemon /opt/redmine-3.2.2-0/apps/redmine/htdocs/files/*

10. 拷贝icon图标

sudo cp /opt/redmine-2.3.1-0/apps/redmine/htdocs/public/favicon.ico /opt/redmine-3.2.2-0/apps/redmine/htdocs/public/favicon.ico

参考资料

• https://wiki.bitnami.com/Applications/BitNami_Redmine#How_to_upgrade_Redmine.3f

• https://wiki.bitnami.com/Components/MySQL#How_to_create_a_database_backup.3f

• http://fableking.iteye.com/blog/1395366

• http://blog.csdn.net/shishuo365/article/details/45999053