puppet一键部署lnmt
puppet一键部署lnmt安装包下载路径http://down.51cto.com/data/2290539
yum install ./*.rpm
puppet模块文件路径
mkdir -pv /etc/puppet/modules/{openjdk,nginx,tomcat,mariadb}/{manifests,files,templates,lib,tests,spec}
cd /etc/puppet/modules
openjdk模块
vim openjdk/manifests/init.pp
class openjdk($version='1.8.0') {
package{"java-$version-openjdk-devel":
ensure => installed,
}
file{'javahome':
ensure => file,
path => '/etc/profile.d/javahome.sh',
source => 'puppet:///modules/openjdk/javahome.sh',
}
}
java运行路径文件
vim /etc/puppet/modules/openjdk/files/javahome.sh
export JAVA_HOME=/usr
puppet apply -v -e 'include openjdk'
这一步就提供完了openjdk
Tomcat服务模块
vim tomcat/manifests/init.pp
class tomcat{
package{'tomcat':
ensure => installed,
} ->
service{'tomcat':
ensure => running,
enable => true,
restart => '/usr/bin/systemctl restart tomcat',
}
}
class tomcat::tomcatweb inherits tomcat {
package{'tomcat-webapps':
ensure => installed,
}
package{'tomcat-admin-webapps':
ensure => installed,
}
Service['tomcat']{
subscribe => [ Package['tomcat-webapps'],Package['tomcat-admin-webapps'] ],
}
}
puppet apply -v -e 'include tomcat::tomcatweb'
这一步这个执行完之后可以打开浏览器访问http://ip:8080，查看页面
facter查看支持全部变量
文本文件中内嵌变量替换机制：
<%= @VARIABLE_NAME %>
获取安装包和配置文件
cd /etc/puppet/modules/nginx/files
wget http://nginx.org/packages/centos/7/x86_64/RPMS/nginx-1.10.2-1.el7.ngx.x86_64.rpm
yum install ./nginx-1.10.2-1.el7.ngx.x86_64.rpm
获取default.conf配置文件，并修改代理配置
cp /etc/nginx/conf.d/default.conf ./
sed -i 's@.*/usr/share/nginx/html;@proxy_pass http://127.0.0.1:8080;@' nginx/files/default.conf
获取nginx.conf.erb模板，并配置worker进程数量等于cpu的数量
cd ../templates/
cp /etc/nginx/nginx.conf ./
sed -i 's@worker_processes.*@worker_processes<%= processorcount %>;@' nginx.conf.erb
Nginx服务器模块
vim nginx/manifests/init.pp
class nginx{
file{'nginxpkg':
path => '/tmp/nginx-1.10.2-1.el7.ngx.x86_64.rpm',
ensure => file,
} ->
exec{'nginx':
unless => '/usr/bin/rpm -q nginx',
user => 'root',
} ->
file{'nginx.conf':
path => '/etc/nginx/nginx.conf',
ensure => file,
content => template('nginx/nginx.conf.erb'),
require => Exec['nginx'],
}
service{'nginx':
ensure => running,
enable => true,
restart => '/usr/sbin/nginx -s reload',
}
}
class nginx::proxy inherits nginx{
file{'default.conf':
path => '/etc/nginx/conf.d/default.conf',
ensure => file,
source => 'puppet:///modules/nginx/default.conf',
require => Exec['nginx'],
}
Service['nginx']{
subscribe => [ File['nginx.conf'],File['default.conf'] ],
}
}
puppet apply -v -e 'include nginx::proxy'
这一步就提供好了Nginx的反向代理，可以打开浏览器访问http://ip，查看页面
数据库节点模块
vim mariadb/manifests/init.pp
class mariadb{
package{'mariadb-server':
ensure => installed,
} ->
service{'mariadb':
ensure => running,
enable => true,
restart => '/usr/bin/yum restart mariadb.service',
}
}
puppet apply -v -e 'include mariadb'
部署大量节点配置
puppet是强依赖于域名解析的，我的hosts文件内容如下
vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.29.1 centos6.org c6
172.16.29.2 centos7.org c7
172.16.29.10 node1.org n1
172.16.29.20 node2.org n2
172.16.29.30 node3.org n3
172.16.29.40 node4.org n4
主节点
开启服务器
systemctl start puppetmaster.service 添加配置文件
vim /etc/puppet/manifests/site.pp
#这个配置可以匹配一个主机centos7.oeg
node 'centos7.org' {
include nginx::proxy
}
#这个配置可以配置多个node主机
node /node\.org/' {
include tomcat::tomcatweb
}
从节点启动从节点服务
puppet agent --server node3.org -v 主节点查看证书
puppet cert list 主节点签署证书
puppet cert sign centos7.org
puppet cert sign node1.org
puppet cert sign node2.org
从节点重启从节点服务
puppet agent --server node3.org -v 从节点永久自动连接master的方法，在agent配置段中添加一行
vim /etc/puppet/puppet.conf
master = node3.org
多环境配置
多环境的意思是，打个比方一个公司有三个环境，一个开发人员测试自己程序的环境，一个测试人员测试程序的环境，还有一个是提供业务的环境。每个环境的配置可能不一样，这里我们使用puppet提供三种不同的环境。
master节点node3提供多环境需要的文件及目录
cd /etc/puppet
mkdir -pv environment/{production,development,testing}/{manifests,moudules}
cp -a modules/* environments/production/moudules/
cp -a modules/* environments/development/moudules/
cp -a modules/* environments/testing/moudules/
#每个环境使用模块时，使用的是/etc/puppet/modules/目录下的模块，所以我们定义模块时要定义的灵活一些
master节点node3 在main配置段中添加如下内容，重启puppetmaster
vim /etc/puppet/puppet.conf
environmentpath = $confdir/environments
systemctl restart puppetmaster.service
master节点提供安装哪些模块
vim environments/production/manifests/site.pp
node 'node2.org' {
include nginx::proxy
}
vim environments/development/manifests/site.pp
node 'node2.org' {
include openjdk
include tomcat::tomcatweb
}
vim environments/development/manifests/site.pp
node 'node1.org' {
include openjdk
include tomcat::tomcatweb
}
vim environments/testing/manifests/site.pp
node 'centos7.org' {
include mariadb
}
node2的agent配置段中添加如下内容，并启动
vim /etc/puppet/puppet.conf
#指向主节点
server = node3.org
listen = true
systemctl start puppetagent.service
安装后的截图如下，只监听了80端口说明，使用了production配置环境，若使用development环境会监听80，8080
node1的agent配置段中添加如下内容，并启动
vim /etc/puppet/puppet.conf
#指向主节点
server = node3.org
listen = true
environment = development
systemctl start puppetagent.service
centos7的agent配置段中添加如下内容，并启动
vim /etc/puppet/puppet.conf
#指向主节点
server = node3.org
listen = true
environment = testing
systemctl start puppetagent.service
puppet的kick的使用
之前puppet工作时都是agent向master请求数据，并且是每30min请求一次，当我们遇到紧急情况，需要立即变更线上业务的时候，我们就需要使用kick，由master主动通知agent，获取配置信息。
从节点node2在path /之前添加一个认证配置段
vim /etc/puppet/auth.conf
path /run
method save
auth any
allow node3.org
从节点node2 在agent配置段中添加监听
vim /etc/puppet/ puppet.conf
listen = true
server = node3.org
主节点编辑
vim environments/production/manifests/site.pp
node 'node2.org' {
include nginx::proxy
include mariadb
}
主节点推服务
puppet kick node2.org node2又监听3306
总结
puppetmater首先提供多个主机需要的模块，各个模块，每个模块中有多个类，类中定义多个服务；然后同时还提供每个主机使用不同的模块提供不同的服务，并且可以把主机分类体提供配置。同时还可以使用master使用kick主动通知agent安装特定的模块。
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