开发环境和测试环境均是CentOS6.4 x86_64,ngxin的模板文件是在puppet模块下面templates目录中以”.erb”结尾的文件,puppet模板主要用于文件,例如各种服务的配置文件,相同的服务,不同的配置就可以考虑使用模板文件,例如Nginx和Apache的虚拟主机配置就可以考虑采用ERB模板,nginx的安装在这里建议用第三方yum源来安装,如果是用Nginx的官方源来安装nginx的话,我们可以查看下/etc/yum.repos.d/nginx.repo文件内容,如下所示:
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[nginx]
name=nginx repo
baseurl=http:
//nginx
.org
/packages/centos/
$releasever/$basearch/
gpgcheck=0
enabled=1
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第二种方式就是通过createrepo自建自己的YUM源,这种方式更加宁活,我们可以在nginx官网去下载适合自己的rpm包,然后添加进自己的YUM源,在自动化运维要求严格的定制环境中,绝大多数运维同学都会选择这种方法。大家通过此种方式安装nginx以后会发现,确实比源码安装Nginx方便多了,像自动分配了运行nginx的用户nginx:nginx,Nginx的日志存放会自动保存在/var/log/nginx下,其工作目录为/etc/nginx,这一点跟源码编译安装的nginx区别很大,请大家在实验过程也注意甄别。
我比较关心的是ruby的版本和puppet的版本,结果显示如下:
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[root@server manifests]
# ruby -v
ruby 1.8.7 (2013-06-27 patchlevel 374) [x86_64-linux]
[root@server manifests]
# puppet -V
3.7.4
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像Puppet的安装和其它初级知识点我这里就略过了,我直接贴上文件内容,/etc/puppet的文件结构如下:
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|-- auth.conf
|-- fileserver.conf
|-- manifests
| |-- nodes
| | |-- client.cn7788.com.pp
| | `--
test
.cn7788.com.pp
| `-- site.pp
|-- modules
| `-- nginx
| |-- files
| |-- manifests
| | `-- init.pp
| `-- templates
| |-- nginx.conf.erb
| `-- nginx_vhost.conf.erb
`-- puppet.conf
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site.pp的文件内容如下:
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import
"nodes/*.pp"
Package {
allow_virtual =>
false
,
}
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client.cn7788.com.pp的文件内容如下所示:
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node
'client.cn7788.com'
{
include nginx
nginx::vhost {
'client.cn7788.com'
:
sitedomain =>
"client.cn7788.com"
,
rootdir =>
"client"
,
}
}
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test.cn7788.com.pp的文件内容如下所示:
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node
'test.cn7788.com'
{
include nginx
nginx::vhost {
'test.cn7788.com'
:
sitedomain =>
"test.cn7788.com"
,
rootdir =>
"test"
,
}
}
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/etc/puppet/modules/nginx/manifests/init.pp文件内容如下所示:
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class nginx{
package{
"nginx"
:
ensure =>present,
}
service{
"nginx"
:
ensure =>running,
require =>Package[
"nginx"
],
}
file
{
"nginx.conf"
:
ensure => present,
mode => 644,owner => root,group => root,
path =>
"/etc/nginx/nginx.conf"
,
content=> template(
"nginx/nginx.conf.erb"
),
require=> Package[
"nginx"
],
}
}
define nginx::vhost($sitedomain,$rootdir) {
file
{
"/etc/nginx/conf.d/${sitedomain}.conf"
:
content => template(
"nginx/nginx_vhost.conf.erb"
),
require => Package[
"nginx"
],
}
}
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/etc/puppet/modules/nginx/templates/nginx.conf.erb文件内容如下所示:
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user nginx;
worker_processes 8;
error_log
/var/log/nginx/error
.log warn;
pid
/var/run/nginx
.pid;
events {
use epoll;
worker_connections 51200;
}
http {
include
/etc/nginx/mime
.types;
default_type application
/octet-stream
;
log_format main
'$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"'
;
access_log
/var/log/nginx/access
.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
include
/etc/nginx/conf
.d/*.conf;
}
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/etc/puppet/modules/nginx/templates/nginx_vhost.conf.erb文件内容如下所示:
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server {
listen
80
;
server_name <%= sitedomain %>;
access_log /
var
/log/nginx/<%= sitedomain %>.access.log;
location / {
root /
var
/www/<%= rootdir %>;
index index.php index.html index.htm;
}
}
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最后我们可以在节点名为client.cn7788.com和test.cn7788.com的机器验证效果,命令如下所示:
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puppet agent --
test
--server server.cn7788.com
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部分执行命令结果如下:
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Info: Computing checksum on
file
/etc/nginx/nginx
.conf
Info: FileBucket got a duplicate
file
{md5}f7984934bd6cab883e1f33d5129834bb
Info:
/Stage
[main]
/Nginx/File
[nginx.conf]: Filebucketed
/etc/nginx/nginx
.conf to puppet with
sum
f7984934bd6cab883e1f33d5129834bb
Notice:
/Stage
[main]
/Nginx/File
[nginx.conf]
/content
: content changed
'{md5}f7984934bd6cab883e1f33d5129834bb'
to
'{md5}6f57d21ca18f7256ef6c6ccd068505dc'
Notice: Finished catalog run
in
15.47 seconds
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为了方便大家下载和阅读,此模块我特的收录进了我的github仓库,地址为https://github.com/yuhongchun/avaliablity/