使用apache管理puppet

   puppet可以独立工作，但当在一个成百上千台服务器的大规模集群中部署 Puppet 环境后，各个 Agent 节点与 Master 之间的同步、检查、通讯就会成为瓶颈，会频繁出现连接超时、读取失败等错误。究其原因，由于 Puppet Master 默认使用的 WEBrick 是一个简单的单进程的 WEB SERVER 服务（类似原始的 CGI），因而在大访问量、高并发的情况下就不适用了。所以，要使用性能更好的 Web Server 来提供 Puppet Rails 应用。在实际应用中，通常将其与apache或者nginx结合使用，以解决高并发的问题。

   在此，我通过apache借助passenger模块的方式来实现apache和puppet的整合。

   puppet master的安装方法在此略过。需要puppet master成功启动过一次，这样会生成相应的证书，方便apache管理。

1.安装ruby环境

    yum -y install  ruby ruby-devel ruby-irb ruby-rdoc ruby-ri  ruby-libs ruby-rdoc openssl-devel

2.安装apache

    yum install -y httpd httpd-devel

3.安装rubygems

       wget http://rubyforge.org/frs/download.php/76729/rubygems-1.8.25.tgz

       tar xf rubygems-1.8.25.tgz

       cd rubygems-1.8.25

       ruby setup.rb

4.安装passenger

      gem install passenger

5.创建apache passenger模块：

       passenger-install-apache2-module

6.修改apache主配置文件，按照安装passenger-install-apache2-module模块时给出的提示添加如下内容：

LoadModule passenger_module /usr/lib64/ruby/gems/1.8/gems/passenger-4.0.17/buildout/apache2/mod_passenger.so PassengerRoot /usr/lib64/ruby/gems/1.8/gems/passenger-4.0.17 PassengerDefaultRuby /usr/bin/ruby PassengerHighPerformance on #PassengerUseGlobalQueue on PassengerMaxPoolSize 3 PassengerMaxRequests 4000 #关闭空闲超过1800秒的passenger实例 PassengerPoolIdleTime 1800 Include conf/extra/puppetmaster.conf     #将puppetmaster.conf配置文件载入

7.将puppet源码包中给出的apache的配置文件apache2.conf复制到apache的子配置文件目录中，并重名为puppetmaster.conf

cp /root/puppet-3.2.2/ext/rack/files/apache2.conf /usr/local/apache2/conf/extra/puppetmaster.conf

8.修改puppetmaster.conf文件，如下：

# you probably want to tune these settings PassengerHighPerformance on PassengerMaxPoolSize 12 PassengerPoolIdleTime 1500 PassengerMaxRequests 4000 PassengerStatThrottleRate 120 #RackAutoDetect Off #RailsAutoDetect Off Listen 8140 <VirtualHost *:8140>        SSLEngine on        SSLProtocol -ALL +SSLv3 +TLSv1        SSLCipherSuite ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP        SSLCertificateFile      /var/lib/puppet/ssl/certs/puppet-master.cmmobi-wh.com.pem        SSLCertificateKeyFile   /var/lib/puppet/ssl/private_keys/puppet-master.cmmobi-wh.com.pem        SSLCertificateChainFile /var/lib/puppet/ssl/ca/ca_crt.pem        SSLCACertificateFile    /var/lib/puppet/ssl/ca/ca_crt.pem        # If Apache complains about invalid signatures on the CRL, you can try disabling        # CRL checking by commenting the next line, but this is not recommended.        SSLCARevocationFile     /var/lib/puppet/ssl/ca/ca_crl.pem        SSLVerifyClient optional        SSLVerifyDepth  1        # The `ExportCertData` option is needed for agent certificate expiration warnings        SSLOptions +StdEnvVars +ExportCertData        # This header needs to be set if using a loadbalancer or proxy        RequestHeader unset X-Forwarded-For        RequestHeader set X-SSL-Subject %{SSL_CLIENT_S_DN}e        RequestHeader set X-Client-DN %{SSL_CLIENT_S_DN}e        RequestHeader set X-Client-Verify %{SSL_CLIENT_VERIFY}e        DocumentRoot /etc/puppet/rack/public/        RackBaseURI /        <Directory /etc/puppet/rack/>                Options None                AllowOverride None                Order allow,deny                allow from all        </Directory> </VirtualHost>

9.创建/etc/puppet/rack/public目录，并将puppet源码包自带的config.ru文件复制到/etc/puppet/rack目录下

mkdir -p /etc/puppet/rack/public

cp /root/puppet-3.2.2/ext/rack/files/config.ru /etc/puppet/rack

cp /usr/lib64/ruby/gems/1.8/gems/passenger-4.0.17/test/stub/rails_apps/1.2/empty/public/*    /etc/puppet/rack/public/

注：如果是以puppet用户身份来运行puppet，需要将config.ru的属主和属组改成puppet

10.关闭puppet master,启动apache，并检查监听端口，然后用客户端测试

service puppetmaster stop

service httpd start

netstat -ntlp | grep httpd

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