puppet 编译安装mysql_Puppet之简单安装Nginx
Puppet 安装Nginx
搞puppet也有三几天了，一些概念还不是很清晰。很多时候实验未成功，都是概念没有理清楚、文档没有看全。别的就先不说了，先来安装一个nginx 来试一下吧。
1、编写nginx模块接下来我们先采动创建模块信息来完成Nginx的部署：需要创建模块录，虚拟主机采件的式进管理。创建模块的信息需要运如下知识点：资源：yumrepo、package、file、service、cron。模板：nginx.conf.erb。创建模块时建议创建README件，接下来对模块的使与安装进详细说明。
2、创建模块录，代码如下：#mkdir -p /etc/puppet/modules/nginx/{manifests,templates,files,tests}
3、创建模块主配置件，代码如下：#cat /etc/puppet/modules/nginx/manifests/init.pp
# Class: nginx
#
#Install nginx.
#
#Parameters:
# * $nginx_user. Defaults to 'nginx'.
# * worker_processes. Defaults to .
#
#Create config directories :
# * /etc/nginx/conf.d for sites includes
#
#Templates:
# - nginx.conf.erb => /etc/nginx/nginx.conf
#
class nginx {
$real_nginx_user = $nginx_user ? { '' => 'nginx', default => $nginx_user }
$nginx_conf = "/etc/nginx/conf.d"
$nginx_logrote = "/etc/nginx/conf.d/nginx_logrote.sh"
yumrepo { "nginx":
descr => "nginx repo",
baseurl => "http://nginx.org/packages/centos/\$releasever/\$basearch/",
gpgcheck => "0",
enabled => "1";
}
package { "nginx":
ensure => installed,
require => Yumrepo["nginx"],
allow_virtual => false;
}
service { 'nginx':
ensure => running,
enable => true,
hasrestart => true,
hasstatus => true,
subscribe => File["nginx.conf"],
}
file { 'nginx.conf':
ensure => present,
mode => 644,
owner => root,
group => root,
path => '/etc/nginx/nginx.conf',
content => template("nginx/nginx.conf.erb"),
notify => Exec["reload-nginx"],
require => Package["nginx"],
}
file { "$nginx_conf":
ensure => directory,
recurse => true,
force => true,
#purge => true,
source => "puppet:///modules/nginx/conf.d",
notify => Exec["reload-nginx"],
require => Package["nginx"],
}
file { "$nginx_logrote":
ensure => file,
mode => 755,
owner => root,
group => root,
source => "puppet:///modules/nginx/nginx_logrote.sh",
}
cron { 'nginx_logrote_cron':
command => "/bin/bash {$nginx_logrote} > /dev/null 2>&1",
user => root,
minute => '0',
hour => '0',
}
exec { 'reload-nginx':
command => "/etc/init.d/nginx reload",
refreshonly => true,
}
}
以上代码中定义了：变量，将nginx户、虚拟主机录及志件定义为变量，便在该作域内引。yumrepo资源，使yumrepo定义Nginx软件包来源，Puppet会在yum软件源中创建nginx.repo件。以上代码中定义了：File资源，nginx.conf采模块的式实现，配置件中部分参数便使facts或变量进传递。志件与虚拟主机件采件同步的式实现，并保持录的致性，以避免虚拟主机删除后 不同步的问题。且还使notify属性触发exec进reload动作。service资源，定义Nginx服务的状态，默认随开机启动，puppet agent运时每次检测Nginx服务是否运等。该资源依赖package资源Nginx软件包的安装。cron资源，定义志清除脚本定时运。每天零点采root进志切割。exec资源，定义Nginx服务的reload命令为资源，便虚拟主机变更时进加载。
4、创建nginx主配置件：我们定义节选核的nginx.conf配置件，其中的nginx进程个数由facts传递，与服务器线程数相同。具体代码如下：# cat /etc/puppet/modules/nginx/templates/nginx.conf.erb
user ;
worker_processes ;
error_log /var/log/nginx/error.log notice;
pid /var/run/nginx.pid;
events {
use epoll;
worker_connections 51200;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
charset utf-8;
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;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_body_buffer_size 8m; #256k
sendfile on;
#timeouts
keepalive_timeout 0;
#TCP Options
tcp_nopush on;
tcp_nodelay on;
client_max_body_size 50m;
include /etc/nginx/conf.d/*.conf;
}
4、创建虚拟主机录及件。对所有的虚拟主机进录同步管理，创建agent.domain.com虚拟主机，定义其内容如下：# mkdir -p /etc/puppet/files/nginx/conf.d # vim /etc/puppet/files/nginx/conf.d/agent1.jeffery.com.conf server {
listen 80;
server_name agent1.jeffery.com
root /var/www/html/agent1.jeffery.com;
location /nginx_status {
stub_status on;
access_log off;
}
}
5、创建志轮循脚本，具体如下：# cat /etc/puppet/modules/nginx/files/nginx_logrote.sh
#!/bin/bash
# This script run at 00:00
# The Nginx logs path
logs_path="/var/log/nginx/"
PIDFILE=/var/run/nginx.pid
ACCESS_LOG="${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/access_$(date -d "yesterday" ERROR_LOG="${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/error_$(date -d "yesterday" mkdir -p ${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/
mv ${logs_path}access.log $ACCESS_LOG
mv ${logs_path}error.log $ERROR_LOG
kill -USR1 `cat $PIDFILE`
#gzip
/bin/gzip -9 $ACCESS_LOG
/bin/gzip -9 $ERROR_LOG
#rm
find ${logs_path} -name "*.log.gz" -mtime +7|xargs rm –f
6、设置同步主机、模块# cat /etc/puppet/manifests/site.pp
$fileserver = "master.jeffery.com"
import "nodes/cnc/*.pp"
#import '/etc/puppet/manifests/nodes/cnc/agent1.jeffery.com.pp'
# cat /etc/puppet/manifests/nodes/cnc/agent1.jeffery.com.pp
node 'agent1.jeffery.com' {
include nginx
#include httpd
#include memcached
}
7、在客户端运puppet命令可以看到Finished完成的提，具体如下：notice: Finished catalog run in 18.76seconds这时我们可以看到/etc/nginx/conf.d录已经同步了志切割件与虚拟主机agent的配置件，并且Nginx服务已启动。到这我们已经完成了编写nginx模块，并在客户端成功进应。整个过程不是常复杂，在编写时只需要知道每个步骤及其实现的功能就可以轻松完成。
二、接下来看如何利官Forge提供的nginx模块实现Nginx部署。编写模块并不像我们想象中的那么复杂，并且灵活可定制。当然也可以使Puppetlabs官Forge上所提供的nginx模块来实现。使时只需要参考模块 录下的README件即可。
1、使命令puppet modules查找模块，代码如下：#puppet module search nginx # puppet module search nginx
Notice: Searching https://forgeapi.puppetlabs.com ...
NAME DESCRIPTION AUTHOR KEYWORDS
jfryman-nginx Puppet NGINX management module @jfryman nginx http proxy rack
puppetlabs-nginx Puppet NGINX management module
...
2、可以看到许多通过官验证的模块，在这我们采官Puppetlabs的nginx模块进安装，代码如下：# puppet module install puppetlabs-nginx
Notice: Preparing to install into /etc/puppet/modules ...
Notice: Downloading from https://forgeapi.puppetlabs.com ...
Notice: Installing -- do not interrupt ...
/etc/puppet/modules
└─┬ puppetlabs-nginx (v99.99.99)
└── puppetlabs-stdlib (v4.3.2)
安装完成后，可以看到在modules录下多出两个模块：stdlib与nginx。
stdlib是puppet提供的函数 库。
nginx模块使了此函数库的函数。
查看nginx模块内容如下：# ll -th modules/nginx
total 32K
-r--r--r-- 1 root root 2.6K May 2 02:36 metadata.json
-r--r--r-- 1 root root 369 May 2 02:35 Modulefile
drwxr-xr-x 4 root root 4.0K Apr 22 08:10 manifests
drwxr-xr-x 4 root root 4.0K Apr 22 08:10 templates
drwxr-xr-x 2 root root 4.0K Apr 22 08:10 tests
-r--r--r-- 1 root root 665 Sep 5 2013 README.markdown
-r--r--r-- 1 root root 2.5K Sep 5 2013 ChangeLog
-r--r--r-- 1 root root 0 Sep 5 2013 README
-r--r--r-- 1 root root 523 Sep 4 2013 LICENSE
# 查看安装模块
# puppet module list
#puppet 卸载模块
# puppet module install puppetlabs-nginx # 或直接将这个目录干掉
3、客户端安装同上，更多内容请查看 README 文档