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 <%= processorcount %>. # #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 <%= real_nginx_user %>; worker_processes <%= processorcount %>; 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 �Cf
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 18.76 seconds
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