Canvas网络教学平台-升级

参考官方网址：https://github.com/instructure/canvas-lms/wiki/Upgrading

1. Canvas Upgrade(更新代码)

进入代码安装目录，如果未修改过官方的代码（除配置文件），可直接执行：

sudo git fetch && git reset --hard origin/stable

有修改需处理冲突或覆盖本地代码。

同时更新analytics、rce源码；
检查ruby，yarn，npm版本是否符合最新版要求，可以看下Production Start。

2. Upgrade and Install Bundled Gems(更新和安装依赖库)

sudo bundle update

sudo bundle install

如果出错，

error1：

Your Ruby version is 2.4.9, but your Gemfile specified >= 2.6.0, < 3.1

升级Ruby到指定版本,
参考：

https://blog.youkuaiyun.com/weixin_41287260/article/details/103072951
https://segmentfault.com/q/1010000000476329

还需要重新安装bundle，执行：sudo gem install bundler

error2：

➜  canvas git:(stable) ✗ sudo bundle install
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this machine.
Fetching gem metadata from https://rubygems.org/.......
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
You have requested:
  rails = 5.1.6.2

The bundle currently has rails locked at 5.1.6.1.
Try running `bundle update rails`

If you are updating multiple gems in your Gemfile at once,
try passing them all to `bundle update`

安装相应的依赖sudo bundle update rails,然后执行sudo bundle install。
如果插件版本报错，修改的gemfile.lock，记得备份，是否可以删除？

3. Upgrade and Install Node Modules(更新和安装Node模块)

sudo yarn install --ignore-engines

4. Compiled Assets(编译)

sudo RAILS_ENV=production bundle exec rake canvas:compile_assets

5. Database migrations(数据库迁移)

sudo RAILS_ENV=production bundle exec rake db:migrate:predeploy
sudo RAILS_ENV=production bundle exec rake db:migrate

db migrate某个rb出错，移出去了，跑一遍，报错，再放回去，跑，通过了。。
如果是在上一个版本之前的rb，觉得删除也无所谓。

6. Notification types(更新通知)

sudo RAILS_ENV=production bundle exec rake db:load_notifications

7. 重启

sudo /etc/init.d/apache2 restart
sudo /etc/init.d/canvas_init restart
script/delayed_job restart

安装之后变成了目录，于是重新安装了sudo a2enmod passenger ，然后正常

rce更新备份.env文件，删除rce目录，重新拉取

8. 意外发现

更新后发现所有的icon图标都出问题了，编译也正常，删除/var/canvas/public/dist目录，重新执行编译：

sudo RAILS_ENV=production bundle exec rake canvas:compile_assets