Puppet apache + passenger模式扩展

浏览数：68 / 时间：2015年06月09日

puppet使用SSL(https)协议来进行通讯，默认情况下，puppet server端使用基于Ruby的WEBRick HTTP服务器。由于WEBRick HTTP服务器在处理agent端的性能方面并不是很强劲，因此需要扩展puppet，搭建Apache或者其他web服务器来处理客户的https请求。

Passenger是一个将Ruby程序嵌入执行的apache的一个模块,它可以让你运行Rails,即Rack应用内的一个Web服务器.能够自动增减集群进程的数量.能提高性能并增加Master和agent之间的并发连接数量。

工作原理如下:

安装好apache和passenger,然后配置apache处理puppet agent的SSL验证请求,最后将apache连接到puppet master.在处理SSL验证请求时,apache会验证puppet agent的证书是否由puppet CA签发,apache 会先验证请求.如果授权通过,则调用master.同时,apache会提供给puppet agent一个证书用于验证服务器的真实性,再将SSL证书存放在适当的位置.打开passenger模块并为puppet master服务创建一个虚拟主机来配置apache.

下面来配置一番:

1.安装apache等相关组件

yum install httpd httpd-devel mod_ssl ruby-devel rubygems libcurl-devel

2.使用ruby gem安装passenger

更换gem镜像使用淘宝源:

gem sources --remove http://rubygems.org/
gem sources -a http://ruby.taobao.org/
gem sources -l
*** CURRENT SOURCES ***

http://ruby.taobao.org/

gem install rack passenger        #安装passenger
passenger-install-apache2-module  #整合apache和passenger  按照相关提示解决依赖关系
安装过程会提示配置apache虚拟主机时需要增加passenger模块配置文件
LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-4.0.55/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
    PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-4.0.55
    PassengerDefaultRuby /usr/bin/ruby
</IfModule>

查看passengeroot目录.
[email protected]:~# passenger-config --root
/usr/lib/ruby/gems/1.8/gems/passenger-4.0.55

3.配置apache和passenger

需要在puppet master创建rack应用,创建一个目录用来存放config.ru配置文件,并创建一个虚拟主机配置文件.rack为web服务器提供了用来和puppet服务交换请求和响应的一些常用API.Rack适用于Ruby类的HTTP服务,可以用于多台服务器之间部署服务.

创建rack框架目录,拷贝配置文件,赋予puppet权限.

mkdir -p /etc/puppet/rack/puppetmaster/{public,tmp}
cp /usr/share/puppet/ext/rack/config.ru /etc/puppet/rack/puppetmaster/
chown puppet. /etc/puppet/rack/puppetmaster/config.ru

配置apache虚拟主机文件:

cp /usr/share/puppet/ext/rack/example-passenger-vhost.conf  /etc/httpd/conf.d/puppet.domain.com.conf
vim /etc/httpd/conf.d/puppet.domain.com.conf
# This Apache 2 virtual host config shows how to use Puppet as a Rack
# application via Passenger. See
# http://docs.puppetlabs.com/guides/passenger.html for more information.


# You can also use the included config.ru file to run Puppet with other Rack
# servers instead of Passenger.


LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-4.0.55/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
    PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-4.0.55
    PassengerDefaultRuby /usr/bin/ruby
    # you probably want to tune these settings
    PassengerHighPerformance on
    PassengerMaxPoolSize 12
    PassengerPoolIdleTime 1500
    # PassengerMaxRequests 1000
    PassengerStatThrottleRate 120
#    RackAutoDetect Off
#    RailsAutoDetect Off
</IfModule>


Listen 8140


<VirtualHost *:8140>
        SSLEngine on
        SSLProtocol             ALL -SSLv2 -SSLv3
        SSLCipherSuite          EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA
        SSLHonorCipherOrder     on


        SSLCertificateFile      /var/lib/puppet/ssl/certs/puppet.domain.com.pem
        SSLCertificateKeyFile   /var/lib/puppet/ssl/private_keys/puppet.domain.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
        # Apache 2.4 introduces the SSLCARevocationCheck directive and sets it to none
        # which effectively disables CRL checking; if you are using Apache 2.4+ you must
        # specify ‘SSLCARevocationCheck chain‘ to actually use the CRL.
        # SSLCARevocationCheck chain
        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/puppetmaster/public/
        RackBaseURI /
        <Directory /etc/puppet/rack/puppetmaster/>
                Options None
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>
</VirtualHost>

检查配置
[email protected]:~# service httpd configtest
Syntax OK  启动apache
[email protected]:~# /etc/init.d/httpd start
检测端口及进程
[email protected]:~# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
tcp        0      0 0.0.0.0:22000               0.0.0.0:*                   LISTEN      811/sshd            
tcp        0      0 127.0.0.1:55939             0.0.0.0:*                   LISTEN      15291/Passenger Rac 
tcp        0      0 :::8140                     :::*                        LISTEN      15234/httpd         
tcp        0      0 :::80                       :::*                        LISTEN      15234/httpd         
tcp        0      0 :::22000                    :::*                        LISTEN      811/sshd            
tcp        0      0 :::443                      :::*                        LISTEN      15234/httpd

4.客户测试:

[email protected]:~# puppet agent --test 
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for agent.domain.com
Info: Applying configuration version ‘1418805297‘
Notice: Finished catalog run in 0.36 seconds

5.查看passenger状态

[email protected]:~# passenger-status
Version : 4.0.55
Date    : Wed Dec 17 17:24:28 +0800 2014
Instance: 15234
----------- General information -----------
Max pool size : 12
Processes     : 1
Requests in top-level queue : 0

----------- Application groups -----------
/etc/puppet/rack/puppetmaster#default:
  App root: /etc/puppet/rack/puppetmaster
  Requests in queue: 0
  * PID: 15291   Sessions: 0       Processed: 62      Uptime: 49m 35s
    CPU: 0%      Memory  : 85M     Last used: 1m 24s ago

[email protected]:~# passenger-memory-stats 
Version: 4.0.55
Date   : Wed Dec 17 17:24:32 +0800 2014

---------- Apache processes ----------
PID    PPID   VMSize    Private  Name
--------------------------------------
15234  1      203.0 MB  0.4 MB   /usr/sbin/httpd
15254  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15255  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15256  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15257  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15258  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15259  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15260  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
15261  15234  203.3 MB  0.5 MB   /usr/sbin/httpd
### Processes: 9
### Total private dirty RSS: 4.27 MB


-------- Nginx processes --------

### Processes: 0
### Total private dirty RSS: 0.00 MB


----- Passenger processes -----
PID    VMSize    Private  Name
-------------------------------
15236  211.6 MB  0.3 MB   PassengerWatchdog
15239  564.9 MB  0.7 MB   PassengerHelperAgent
15244  210.5 MB  0.8 MB   PassengerLoggingAgent
15291  190.6 MB  85.4 MB  Passenger RackApp: /etc/puppet/rack/puppetmaster
### Processes: 4
### Total private dirty RSS: 87.20 MB