在Apache上运行nova-api-优快云博客

本文介绍如何将OpenStack的Nova-API服务部署在Apache Web服务器上，通过配置Apache及Nova的相关设置，实现Nova-API服务的高效运行。适用于OpenStack大规模部署场景。

如果部署大规模openstack，将nova-api运行在Apache上是个不错的选择。

基础环境：

ubuntu-12.04-server
openstack Grizzly

配置过程:

添加apache配置文件

# vim /etc/apache2/conf.d/nova.conf

WSGIScriptAlias /ec2 /var/www/cgi-bin/nova/ec2
WSGIScriptAlias /metadata /var/www/cgi-bin/nova/metadata
WSGIScriptAlias /osapi_compute /var/www/cgi-bin/nova/osapi_compute

<location ec2"="">
  Allow from all
</location>

<location metadata"="">
  Allow from all
</location>

<location osapi_compute"="">
  Allow from all
</location>

# mkdir -p /var/www/cgi-bin
# vim /var/www/cgi-bin/ec2

import gettext
import logging
import os

from nova import config
from paste import deploy

from oslo.config import cfg

LOG = logging.getLogger(__name__)

import gettext
gettext.install('nova', unicode=1)

CONF = cfg.CONF
config_files = ['/etc/nova/nova.conf', '/etc/nova/api-paste.ini']
CONF(project='nova', default_config_files=config_files)

conf = CONF.config_file[1]
name = os.path.basename(__file__)

CONF.log_opt_values(logging.getLogger(CONF.prog), logging.DEBUG)
options = deploy.appconfig('config:%s' % CONF.config_file[1], name=name)
application = deploy.loadapp('config:%s' % conf, name=name)

# cp /var/www/cgi-bin/ec2 /var/www/cgi-bin/metadata
# cp /var/www/cgi-bin/ec2 /var/www/cgi-bin/osapi_compute

确保apache有权限访问/etc/nova

# chmod 777 -R /etc/nova

确保apache有权限访问keystone-signing目录

如果/etc/nova/api-paste.ini配置了

signing_dir = /tmp/keystone-signing-nova

执行：

 # chown www-data:www-data /tmp/keystone-signing-nova

如果没有配置：

# mkdir /var/www/keystone-signing
# chown www-data:www-data /var/www/keystone-signing/

重启apach2

# service apache2 restart

测试配置：

# curl http://127.0.0.1/metadata

返回正确则说明配置成功

http://127.0.0.1/osapi_compute 对应原来的 http://127.0.0.1:8774
http://127.0.0.1/ec2 对应原来的 http://127.0.0.1:8773
http://127.0.0.1/metadata 对应原来的 http://127.0.0.1:8775