注册：
注册完了等一会会收到一个随机密码
登陆系统后可以创建Micro Cloud Foundry，接着可以下载一个可以用VMWare打开的镜像。下面的操作不需要下载这个镜像。
安装vmc：
Installing Ruby and RubyGems:
sudo apt-get install ruby-full rubygems
sudo gem install rubygems-update
sudo /var/lib/gems/1.8/bin/update_rubygems
Installing vmc:
sudo gem install vmc
Specify the Cloud Foundry target
# vmc target api.cloudfoundry.com
Successfully targeted to []
# vmc login
Successfully logged into []
#vmc info
VMware's Cloud Application Platform
For support visit
Target: (v0.999)
Client: v0.3.15
User: <##############>
Usage: Memory (0B of 2.0G total)
Services (0 of 16 total)
Apps (0 of 20 total)
A simple Ruby Hello World application using Sintatra
Install Sinatra Web framework
# gem install sinatra
# mkdir -p /usr/bob/sample-apps/hello
# cd /usr/bob/sample-apps/hello/
# vim hello.rb
require 'sinatra'
get '/' do
"Hello from Cloud Foundry"
end
Push hello to cloudfoundry:
# vmc push
Would you like to deploy from the current directory? [Yn]: y
Application Name: feisky
Application Deployed URL [feisky.cloudfoundry.com]:
Detected a Sinatra Application, is this correct? [Yn]:
Memory Reservation (64M, 128M, 256M, 512M, 1G, 2G) [128M]:
Creating Application: OK
Would you like to bind any services to 'feisky'? [yN]:
Uploading Application:
Checking for available resources: OK
Packing application: OK
Uploading (0K): OK
Push Status: OK
Staging Application: OK
Starting Application: OK
接着打开就可以访问刚才发布的app
可以通过下面的命令查看已有的apps：
# vmc apps
+-------------+----+---------+-------------------------+----------+
| Application | # | Health | URLS | Services |
+-------------+----+---------+-------------------------+----------+
| feisky | 1 | RUNNING | feisky.cloudfoundry.com | |
+-------------+----+---------+-------------------------+----------+
更新已有的app：
# vmc update feisky
Logging
root@localhost:~# vmc files feisky logs （当前有哪些log文件）
stderr.log 185B
stdout.log 217B
root@localhost:~# vmc files feisky logs/stdout.log （读log文件的内容）
== Sinatra/1.2.1 has taken the stage on 54337 for production with backup from Thin
>> Thin web server (v1.2.11 codename Bat-Shit Crazy)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:54337, CTRL+C to stop
If you suspect that your application has crashed recently, run vmc crashes which will provide you with more information:
prompt$ vmc crashes hotels
Use vmc crashlogs to get more detailed information about the crash:
prompt$ vmc crashlogs hotels
Managing the Application Lifecycle：
# vmc restart feisky
Stopping Application: OK
Staging Application: OK
Starting Application: OK
# vmc start feisky
# vmc stop feisky
# vmc rename old-name new-name
# vmc delete feisky
Avoiding Downtime When Updating The Deployment Bits
vmc push feisky-new
vmc map feisky-new feisky.cloudfoundry.com
# vmc apps
+-------------+----+---------+------------------------------------------------------+----------+
| Application | # | Health | URLS | Services |
+-------------+----+---------+------------------------------------------------------+----------+
| feisky | 1 | RUNNING | feisky.cloudfoundry.com | |
| feisky-new | 1 | RUNNING | feisky-new.cloudfoundry.com, feisky.cloudfoundry.com | |
+-------------+----+---------+------------------------------------------------------+----------+
此时，访问feisky.cloudfoundry.com，有的时候会访问到老版本，有的时候会访问到新版本
Disassociate the old application from its original deployment URL:
# vmc unmap feisky feisky.cloudfoundry.com
Disassociate the new application from its new deployment URL：
# vmc unmap feisky-new feisky-new.cloudfoundry.com
Delete old application:
# vmc delete feisky
Monitering
# vmc stats feisky-new （当前的资源占用情况）
+----------+-------------+----------------+--------------+---------------+
| Instance | CPU (Cores) | Memory (limit) | Disk (limit) | Uptime |
+----------+-------------+----------------+--------------+---------------+
| 0 | 0.0% (4) | 17.2M (128M) | 44.0K (2G) | 0d:0h:12m:20s |
+----------+-------------+----------------+--------------+---------------+
# vmc mem feisky-new 512
Updating Memory Reservation to 512M: OK
Stopping Application: OK
Staging Application: OK
Starting Application: OK
# vmc stats feisky-new （改变应用的内存上限）
+----------+-------------+----------------+--------------+-------------+
| Instance | CPU (Cores) | Memory (limit) | Disk (limit) | Uptime |
+----------+-------------+----------------+--------------+-------------+
| 0 | 3.9% (4) | 17.0M (512M) | 40.0K (2G) | 0d:0h:0m:5s |
+----------+-------------+----------------+--------------+-------------+
# vmc instances feisky-new 4 （将应用的实例数改为4）
Scaling Application instances up to 4: OK
# vmc stats feisky-new
+----------+-------------+----------------+--------------+--------------+
| Instance | CPU (Cores) | Memory (limit) | Disk (limit) | Uptime |
+----------+-------------+----------------+--------------+--------------+
| 0 | 0.1% (4) | 17.0M (512M) | 40.0K (2G) | 0d:0h:1m:21s |
| 1 | 2.7% (4) | 17.0M (512M) | 40.0K (2G) | 0d:0h:0m:6s |
| 2 | 3.6% (4) | 17.0M (512M) | 40.0K (2G) | 0d:0h:0m:6s |
| 3 | 3.4% (4) | 17.0M (512M) | 40.0K (2G) | 0d:0h:0m:6s |
+----------+-------------+----------------+--------------+--------------+
总结：
Cloud
Foundry是VMware用Ruby实现的业界首个开源PaaS平台，支持多种语言(Ruby、Java、Javascript、Python、
PHP等)以及开发框架(Rails、Sinatra、Spring、NodeJS等)，能集成各种后端serivce(Mysql、MongoDB、
Redis等) 支持多种云计算平台，能提升开发者的生产力，加速软件开发部署。
