puppet 横向扩展(一)

简介:

概述

横向扩展实验之一 – 扩展puppet master 的个数.

实验环境

master 和 node 都是 debian 7.7 i686 系统
2个 puppet master 在一台机器上, 都是 apache 虚拟主机

实验步骤

创建puppetmaster的rack环境

cd /usr/share/puppet/rack

mkdir -p puppetmasterd_18140/{public,tmp}
cp puppetmasterd/config.ru puppetmasterd_18140/
chown puppet puppetmasterd_18140/config.ru

mkdir -p puppetmasterd_18141/{public,tmp}
cp puppetmasterd/config.ru puppetmasterd_18141/
chown puppet puppetmasterd_18141/config.ru

配置文件设置

  • passenger.conf : passenger 配置信息
    放在 /etc/apache2/mods-available 中, 并在 /etc/apache2/mods-enabled中建立软连接
  • puppetmaster_proxy.conf
    关闭 SSL, 重新请求头部, 为后端进程做负载均衡,放在 /etc/apache2/site-available 中, 并在 /etc/apache2/site-enabled中建立软连接
  • puppetmaster_worker_1.conf
    虚拟主机1, 指向处理puppet请求的Rac目录,放在 /etc/apache2/site-available 中, 并在 /etc/apache2/site-enabled中建立软连接
  • puppetmaster_worker_2.conf
    虚拟主机2, 指向处理puppet请求的Rac目录,放在 /etc/apache2/site-available 中, 并在 /etc/apache2/site-enabled中建立软连接

各个配置文件的详细内容如下:

$ cat passenger.conf
<IfModule mod_passenger.c>
  PassengerRoot /usr
  PassengerRuby /usr/bin/ruby

  # And the passenger performance tuning settings
  PassengerHighPerformance On
  # Set this to about 1.5 times the number of CPU cores in your master:
  PassengerMaxPoolSize 2
  # Recycle master processes after they service 1000 requests
  PassengerMaxRequests 1000
  # Stop processes if they sit idle for 10 minutes
  PassengerPoolIdleTime 600
</IfModule>

$ cat puppetmaster_proxy.conf
# Available back-end worker virtual hosts
# NOTE the use of cleartext unencrypted HTTP.
<Proxy balancer://puppetmaster>
  BalancerMember http://127.0.0.1:18140
  BalancerMember http://127.0.0.1:18141
</Proxy>

Listen 8140
<VirtualHost *:8140>
  SSLEngine on
  # SSLCipherSuite SSLv2:-LOW:-EXPORT:RC4+RSA
  SSLProtocol ALL +SSLv3 +TLSv1
  SSLCipherSuite ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP
  #SSLProtocol ALL -SSLv2
  #SSLCipherSuite HIGH:!ADH:RC4+RSA:-MEDIUM:-LOW:-EXP
  # Puppet master should generate initial CA certificate.
  # ensure certs are located in /var/lib/puppet/ssl
  SSLCertificateFile /var/lib/puppet/ssl/certs/master-1.puppet.com.pem
  SSLCertificateKeyFile /var/lib/puppet/ssl/private_keys/master-1.puppet.com.pem
  SSLCertificateChainFile /var/lib/puppet/ssl/ca/ca_crt.pem
  SSLCACertificateFile /var/lib/puppet/ssl/ca/ca_crt.pem
  SSLCARevocationFile /var/lib/puppet/ssl/ca/ca_crl.pem
  # optional to all CSR request, required if certificates distributed to client during provisioning.
  SSLVerifyClient optional
  SSLVerifyDepth 1
  SSLOptions +StdEnvVars

  # The following client headers record authentication information for downstream workers.
  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

  <Location />
    SetHandler balancer-manager
    Order allow,deny
    Allow from all
  </Location>

  ProxyPass / balancer://puppetmaster/
  ProxyPassReverse / balancer://puppetmaster/
  ProxyPreserveHost On

  # log settings
  ErrorLog /var/log/apache2/balancer_error.log
  CustomLog /var/log/apache2/balancer_access.log combined
  CustomLog /var/log/apache2/balancer_ssl_requests.log "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"

</VirtualHost>

$ cat puppetmaster_worker_1.conf
Listen 18140
<VirtualHost 127.0.0.1:18140>
  SSLEngine off

  # Obtain Authentication Information from Client Request Headers
  SetEnvIf X-Client-Verify "(.*)" SSL_CLIENT_VERIFY=$1
  SetEnvIf X-SSL-Client-DN "(.*)" SSL_CLIENT_S_DN=$1

  PassengerEnabled On
  DocumentRoot /usr/share/puppet/rack/puppetmasterd_18140/public
  <Directory /usr/share/puppet/rack/puppetmasterd_18140>
    Options None
    AllowOverride None
    Order allow,deny
    allow from all
  </Directory>

  # log settings
  ErrorLog /var/log/apache2/puppetmaster_worker_error_1.log
  CustomLog /var/log/apache2/puppetmaster_worker_access_1.log combined

</VirtualHost>

$ cat puppetmaster_worker_2.conf
Listen 18141
<VirtualHost 127.0.0.1:18141>
  SSLEngine off

  # Obtain Authentication Information from Client Request Headers
  SetEnvIf X-Client-Verify "(.*)" SSL_CLIENT_VERIFY=$1
  SetEnvIf X-SSL-Client-DN "(.*)" SSL_CLIENT_S_DN=$1

  PassengerEnabled On
  DocumentRoot /usr/share/puppet/rack/puppetmasterd_18141/public
  <Directory /usr/share/puppet/rack/puppetmasterd_18141>
    Options None
    AllowOverride None
    Order allow,deny
    allow from all
  </Directory>

  # log settings
  ErrorLog /var/log/apache2/puppetmaster_worker_error_2.log
  CustomLog /var/log/apache2/puppetmaster_worker_access_2.log combined

</VirtualHost>

补充说明

apache默认没有加载 proxy 和 proxy_balancer 和 proxy_http 模块,需要补上

cd /etc/apache2/mods-enabled
ln -s ../mods-available/proxy.conf proxy.conf
ln -s ../mods-available/proxy.load proxy.load
ln -s ../mods-available/proxy_balancer.conf proxy_balancer.conf 
ln -s ../mods-available/proxy_balancer.load proxy_balancer.load
ln -s ../mods-available/proxy_http.load proxy_http.load     # 没有这个模块, agent 会有 503错误

cd /etc/apache2/sites-enabled
ln -s ../sites-available/puppetmaster_proxy.conf puppetmaster_proxy
ln -s ../sites-available/puppetmaster_worker_1.conf puppetmaster_worker_1
ln -s ../sites-available/puppetmaster_worker_2.conf puppetmaster_worker_2

默认的 8140 端口关闭

rm /etc/apache2/sites-enabled/puppetmaster
service apache2 restart

配置完成后如果有类似如下 403 权限不足的错误

Warning: Unable to fetch my node definition, but the agent run will continue:
Warning: Error 403 on SERVER: Forbidden request: localhost(127.0.0.1) access to /certificate_revocation_list/ca [find] at :119

那么, 将 master-1 上的 /etc/puppet/puppet.conf 文件中 [master] 下 如下2行注释掉。(估计SSL由代理服务器来完成)

#ssl_client_header = SSL_CLIENT_S_DN
#ssl_client_verify_header = SSL_CLIENT_VERIFY

测试配置结果

默认的负载均衡

# puppet master 上执行
root@master-1:/var/log/apache2# service apache2 restart
# 开始时, 负载均衡的log都是空的
root@master-1:/var/log/apache2# ll /var/log/apache2/   
total 4
-rw-r--r-- 1 root root   0 Jan  7 09:58 access.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 balancer_access.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 balancer_error.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 balancer_ssl_requests.log
-rw-r--r-- 1 root root 597 Jan  7 16:43 error.log
-rw-r--r-- 1 root root   0 Jan  7 09:58 other_vhosts_access.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_access_1.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_access_2.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_error_1.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_error_2.log

# agent 上执行
puppet agent -t

# master 上查看log
root@master-1:/var/log/apache2# ll /var/log/apache2/
total 20
-rw-r--r-- 1 root root   0 Jan  7 09:58 access.log
-rw-r--r-- 1 root root 821 Jan  7 16:52 balancer_access.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 balancer_error.log
-rw-r--r-- 1 root root 903 Jan  7 16:52 balancer_ssl_requests.log
-rw-r--r-- 1 root root 597 Jan  7 16:43 error.log
-rw-r--r-- 1 root root   0 Jan  7 09:58 other_vhosts_access.log
-rw-r--r-- 1 root root 489 Jan  7 16:52 puppetmaster_worker_access_1.log
-rw-r--r-- 1 root root 311 Jan  7 16:52 puppetmaster_worker_access_2.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_error_1.log
-rw-r--r-- 1 root root   0 Jan  7 16:43 puppetmaster_worker_error_2.log
root@master-1:/var/log/apache2# cat balancer_access.log
192.168.1.120 - - [07/Jan/2015:16:52:37 +0800] "GET /production/node/node-1.puppet.com?transaction_uuid=7998c4d3-ba8e-4ffd-8f7f-8d37f3de42ec&fail_on_404=true HTTP/1.1" 200 10464 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:16:52:39 +0800] "GET /production/file_metadatas/pluginfacts?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 569 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:16:52:40 +0800] "GET /production/file_metadatas/plugins?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 569 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:16:52:40 +0800] "POST /production/catalog/node-1.puppet.com HTTP/1.1" 200 869 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:16:52:41 +0800] "PUT /production/report/node-1.puppet.com HTTP/1.1" 200 298 "-" "Ruby"
root@master-1:/var/log/apache2# cat puppetmaster_worker_access_1.log
127.0.0.1 - - [07/Jan/2015:16:52:37 +0800] "GET /production/node/node-1.puppet.com?transaction_uuid=7998c4d3-ba8e-4ffd-8f7f-8d37f3de42ec&fail_on_404=true HTTP/1.1" 200 5120 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:16:52:40 +0800] "GET /production/file_metadatas/plugins?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 566 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:16:52:41 +0800] "PUT /production/report/node-1.puppet.com HTTP/1.1" 200 295 "-" "Ruby"
root@master-1:/var/log/apache2# cat puppetmaster_worker_access_2.log
127.0.0.1 - - [07/Jan/2015:16:52:39 +0800] "GET /production/file_metadatas/pluginfacts?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 567 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:16:52:40 +0800] "POST /production/catalog/node-1.puppet.com HTTP/1.1" 200 866 "-" "Ruby"

从上面的log可以看出 agent 上执行的 puppet agent -t 一共访问了 5 次 master.
其中3次由 worker_1 处理了, 2次由 worker_2 处理了. <== 这就是负载均衡的效果

负载均衡情况下, 一台 puppet master 挂了的情况

# master 上执行, 清空log, 删除 puppetmaster_worker_1 的配置, 重启apache2 服务
root@master-1:~# rm /var/log/apache2/* -rf
root@master-1:~# rm /etc/apache2/sites-enabled/puppetmaster_worker_1
rm: remove symbolic link `/etc/apache2/sites-enabled/puppetmaster_worker_1'? y
root@master-1:~# service apache2 restart
[ ok ] Restarting web server: apache2 ... waiting .
root@master-1:~# ll /var/log/apache2/
total 4
-rw-r--r-- 1 root root   0 Jan  7 17:53 access.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 balancer_access.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 balancer_error.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 balancer_ssl_requests.log
-rw-r--r-- 1 root root 155 Jan  7 17:53 error.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 other_vhosts_access.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 puppetmaster_worker_access_2.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 puppetmaster_worker_error_2.log

# agent 上执行
root@node-1:~# puppet agent -t
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for node-1.puppet.com
Info: Applying configuration version '1420626127'
Notice: Finished catalog run in 0.03 seconds

# master 上查看执行结果
root@master-1:~# ll /var/log/apache2/
total 20
-rw-r--r-- 1 root root   0 Jan  7 17:53 access.log
-rw-r--r-- 1 root root 821 Jan  7 18:22 balancer_access.log
-rw-r--r-- 1 root root 223 Jan  7 18:22 balancer_error.log
-rw-r--r-- 1 root root 903 Jan  7 18:22 balancer_ssl_requests.log
-rw-r--r-- 1 root root 155 Jan  7 17:53 error.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 other_vhosts_access.log
-rw-r--r-- 1 root root 800 Jan  7 18:22 puppetmaster_worker_access_2.log
-rw-r--r-- 1 root root   0 Jan  7 17:53 puppetmaster_worker_error_2.log
root@master-1:~# cat /var/log/apache2/balancer_access.log
192.168.1.120 - - [07/Jan/2015:18:22:05 +0800] "GET /production/node/node-1.puppet.com?transaction_uuid=29b0a3a5-8749-4647-92a4-a6da66c25c64&fail_on_404=true HTTP/1.1" 200 10466 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:18:22:06 +0800] "GET /production/file_metadatas/pluginfacts?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 569 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:18:22:06 +0800] "GET /production/file_metadatas/plugins?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 569 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:18:22:07 +0800] "POST /production/catalog/node-1.puppet.com HTTP/1.1" 200 869 "-" "Ruby"
192.168.1.120 - - [07/Jan/2015:18:22:07 +0800] "PUT /production/report/node-1.puppet.com HTTP/1.1" 200 298 "-" "Ruby"
root@master-1:~# cat /var/log/apache2/puppetmaster_worker_access_2.log
127.0.0.1 - - [07/Jan/2015:18:22:05 +0800] "GET /production/node/node-1.puppet.com?transaction_uuid=29b0a3a5-8749-4647-92a4-a6da66c25c64&fail_on_404=true HTTP/1.1" 200 5122 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:18:22:06 +0800] "GET /production/file_metadatas/pluginfacts?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 566 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:18:22:06 +0800] "GET /production/file_metadatas/plugins?links=manage&recurse=true&ignore=.svn&ignore=CVS&ignore=.git&checksum_type=md5 HTTP/1.1" 200 566 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:18:22:07 +0800] "POST /production/catalog/node-1.puppet.com HTTP/1.1" 200 866 "-" "Ruby"
127.0.0.1 - - [07/Jan/2015:18:22:07 +0800] "PUT /production/report/node-1.puppet.com HTTP/1.1" 200 295 "-" "Ruby"

从上面的log可以看出, 没有生成 worker_1 的log, 全部处理都是由 worker_2 完成的. agent 也没有出错.




本文转自wang_yb博客园博客,原文链接:http://www.cnblogs.com/wang_yb/p/4249621.html,如需转载请自行联系原作者


相关实践学习
部署高可用架构
本场景主要介绍如何使用云服务器ECS、负载均衡SLB、云数据库RDS和数据传输服务产品来部署多可用区高可用架构。
负载均衡入门与产品使用指南
负载均衡(Server Load Balancer)是对多台云服务器进行流量分发的负载均衡服务,可以通过流量分发扩展应用系统对外的服务能力,通过消除单点故障提升应用系统的可用性。 本课程主要介绍负载均衡的相关技术以及阿里云负载均衡产品的使用方法。
目录
相关文章
|
网络安全 Apache Ruby
puppet 纵向扩展Apache+Passenger
转载:http://blog.51cto.com/ywzhou/15765291、功能说明 puppet默认使用基于Ruby的WEBRickHTTP来处理HTTPS请求, 单个服务器使用Apache+Passenger替换掉WEBRickHTTP, P...
1120 0
|
测试技术 应用服务中间件 Apache