体验devstack安装openstack

由于公司制度，工作环境是不能直接上网的，所以在工作时间从没有体验过devstack或者其他联网方式安装openstack。

因自己购置了一台不错的主机，因而决定尝试安装一番，经过一段为期不短的内心极度崩溃与愈合，终于看到了如下的打印：

 This is your host IP address: 192.168.0.105
 This is your host IPv6 address: ::
 Horizon is now available at http://192.168.0.105/dashboard
 Keystone is serving at http://192.168.0.105:5000/
 The default users are: admin and demo
 The password: 123456
 2017-01-21 08:46:05.167 | stack.sh completed in 746 seconds.

喔喔，这是成功了吗，可以登录了。

好了，还是言归正传：

工作环境：vmware 12

操作系统：ubuntu 14.04.5

虚拟机配置 内存： 4G ， CPU : 4核 ，开启VTx-d等选项，内存是越大越好，不过俺的主机内存有限。

安装完后:

root@ubuntu:~# free -h
             total       used       free     shared    buffers     cached
Mem:          3.8G       3.7G       151M       3.2M       100M       1.1G
-/+ buffers/cache:       2.5G       1.3G
Swap:         1.0G       744K       1.0G

apt源可以使用国内的默认源，也可以使用其他国内的源，不过博主居然遇到cn.archive.ubuntu.com当机了。。。

因此测试了一下阿里的源，貌似比较稳定，于是：

sed -i "s/cn.archive.ubuntu.com/mirrors.aliyun.com/g" /etc/apt/sources.list
apt-get update

pip的设置（首先创建目录： mkdir ~/.pip  && vim ~/.pip/pip.conf）：

 stack@ubuntu:~/devstack$ cat ~/.pip/pip.conf
 [global]
 index-url = http://mirrors.aliyun.com/pypi/simple/
 [install]
 trusted-host=mirrors.aliyun.com

devstack本地配置：

 stack@ubuntu:~/devstack$ cat local.conf
 [[local|localrc]]

 # use TryStack git mirror
 GIT_BASE=http://git.trystack.cn
 NOVNC_REPO=http://git.trystack.cn/kanaka/noVNC.git
 SPICE_REPO=http://git.trystack.cn/git/spice/spice-html5.git

 #OFFLINE=True
 RECLONE=True

 # Define images to be automatically downloaded during the DevStack built process.
 DOWNLOAD_DEFAULT_IMAGES=False
 IMAGE_URLS="http://images.trystack.cn/cirros/cirros-0.3.4-x86_64-disk.img"

 ADMIN_PASSWORD=123456
 DATABASE_PASSWORD=$ADMIN_PASSWORD
 RABBIT_PASSWORD=$ADMIN_PASSWORD
 SERVICE_PASSWORD=$ADMIN_PASSWORD

我一开始使用默认的国外源，是想安装newton版本，不过那个网速真的没法成功安装。。

使用国内的源会快很多，但是好像只支持mitaka版本，因此就先安装这个，接下来就是：

1、创建一个普通用户，比如官网推荐的 stack

 sudo adduser stack

 sudo echo "stack ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers

2、切换到stack用户（执行su stack），然后：

 cd ~
 sudo apt-get install git
 git clone https://github.com/openstack-dev/devstack.git -b stable/mitaka

3、开始安装：

 cd devstack
 ./stack.sh

4、中途遇到的问题：

 Traceback (most recent call last):
   File "/usr/local/bin/openstack", line 7, in <module>
     from openstackclient.shell import main
   File "/usr/local/lib/python2.7/dist-packages/openstackclient/shell.py", line 32, in <module>
     from openstackclient.common import clientmanager
   File "/usr/local/lib/python2.7/dist-packages/openstackclient/common/clientmanager.py", line 293, in <module>
     'openstack.cli.base',
   File "/usr/local/lib/python2.7/dist-packages/openstackclient/common/clientmanager.py", line 264, in get_plugin_modules
     __import__(ep.module_name)
   File "/usr/local/lib/python2.7/dist-packages/openstackclient/network/client.py", line 16, in <module>
     from openstack import connection
   File "/usr/local/lib/python2.7/dist-packages/openstack/connection.py", line 68, in <module>
     from openstack import session as _session
   File "/usr/local/lib/python2.7/dist-packages/openstack/session.py", line 29, in <module>
     DEFAULT_USER_AGENT = "openstacksdk/%s" % openstack.__version__
 AttributeError: 'module' object has no attribute '__version__

好吧，发现是/usr/local/lib/python2.7/dist-packages/openstack/session.py里执行失败：

代码行： DEFAULT_USER_AGENT = "openstacksdk/%s" % openstack.__version__

于是如下处理一下：

 root@ubuntu:~# python
 Python 2.7.6 (default, Oct 26 2016, 20:30:19)
 [GCC 4.8.4] on linux2
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import openstack
 >>> import pbr.version
 >>> print(pbr.version.VersionInfo('openstacksdk').version_string())
 0.8.1
 >>> quit()
 root@ubuntu:~# 

修改为： DEFAULT_USER_AGENT = "openstacksdk/0.8.1"

cd ~/devstack
./unstack.sh
./clean.sh
./stack.sh

好运的话，会一次安装成功吧。

然而博主是经历了断断续续历时约12个小时失败才安装成功。。。

5、如何重启devstack

devstack重启脚本是rejoin-stack.sh，但是git下来的版本却没有，只好去网上找一个，如下：

#!/usr/bin/env bash

# This script rejoins an existing screen, or re-creates a
# screen session from a previous run of stack.sh.

TOP_DIR=`dirname $0`

# Import common functions in case the localrc (loaded via stackrc)
# uses them.
source $TOP_DIR/functions

source $TOP_DIR/stackrc

# if screenrc exists, run screen
if [[ -e $TOP_DIR/stack-screenrc ]]; then
    if screen -ls | egrep -q "[0-9].stack"; then
        echo "Attaching to already started screen session.."
        exec screen -r stack
    fi
    exec screen -c $TOP_DIR/stack-screenrc
fi

echo "Couldn't find $TOP_DIR/stack-screenrc file; have you run stack.sh yet?"
exit 1

vim ~/devstack/rejoin-stack.sh将上面的内容复制进去。

chmod +x ~/devstack/rejoin-stack.sh
sudo chmod 777 /dev/pts/0
./rejoin-stack.sh

即可重启服务咯，哈哈，我赶紧把内存加大1G~~~

root@ubuntu:~# free -h
             total       used       free     shared    buffers     cached
Mem:          4.8G       3.0G       1.7G       3.4M        62M       230M
-/+ buffers/cache:       2.7G       2.0G
Swap:         1.0G         0B       1.0G

接下来，就可以愉快的玩耍了。

6、如何成为openstack的开发者：

http://www.ibm.com/developerworks/cn/cloud/library/cl-contributecode-openstack/