【51CTO原创稿件】随着公司应用需求的增加，需要不断的扩展，服务器数量也随之增加，当服务器数量不断增加，我们会发现一台puppetmaster压力大，解析缓慢，而且时不时出现"time out"之类的报错，那这时有什么优化的办法吗？我们在Puppet官网上找寻解决方案，发现puppetmaster可以配置多端口，结合WEB代理（推荐Nginx），这样puppetmaster承受能力至少可以提升数倍以上，相当于在很大程度上优化了puppet的处理能力。1.遵循前面的环境设定，我们这里的服务器环境及软件版本分别为：服务器系统：CentOS5.8 x86_64Ruby版本：ruby-1.8.5Puppet版本：puppet-2.7.9Nginx版本：nginx-0.8.462.Mongrel安装要使用puppet多端口配置，需要指定mongrel类型，默认没有安装，需要安装：yum install -y rubygem-mongrel3.配置puppetmaster在/etc/sysconfig/puppetmaster文件末尾添加如下两行，分别代表多端口、mongrel类型，内容如下所示：PUPPETMASTER_PORTS=(8141 8142 8143 8144 8145)PUPPETMASTER_EXTRA_OPTS="--servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT"　　4.安装Nginx服务安装之前请确保系统已经安装pcre-devel正则库，然后再编译安装Nginx，需要添加SSL模块参数支持，Nginx的安装过程如下所示：yum -y install pcre-develcd /usr/local/srcwget http://nginx.org/download/nginx-0.8.46.tar.gztar zxvf nginx-0.8.46.tar.gzcd nginx-0.8.46./configure --prefix=/usr/local/nginx --with-http_ssl_modulemake && make install && cd ../添加www用户组及用户，命令如下所示：groupadd wwwuseradd -g www www5.我们依据puppet需求来修改配置文件nginx.conf，内容如下所示：user www; worker_processes  8; events { worker_connections  65535; } http { include       mime.types; default_type  application/octet-stream; sendfile        on; tcp_nopush     on; keepalive_timeout  65; #定义puppet客户端访问puppet-server端日志格式 log_format main ‘$remote_addr - $remote_user [$time_local] "$request" $request_length $request_time $time_local‘ ‘$status $body_bytes_sent $bytes_sent $connection $msec "$http_referer" ‘ ‘"$http_user_agent" $http_x_forwarded_for $upstream_response_time $upstream_addr $upstream_status ‘; access_log  /usr/local/nginx/logs/access.log  main; upstream puppetmaster { server 127.0.0.1:8141; server 127.0.0.1:8142; server 127.0.0.1:8143; server 127.0.0.1:8144; server 127.0.0.1:8145; } server { listen 8140; root /etc/puppet; ssl on; ssl_session_timeout 5m; #如下为puppetmaster服务器端证书地址 ssl_certificate /var/lib/puppet/ssl/certs/server.cn7788.com.pem; ssl_certificate_key /var/lib/puppet/ssl/private_keys/server.cn7788.com.pem; ssl_client_certificate /var/lib/puppet/ssl/ca/ca_crt.pem; ssl_crl /var/lib/puppet/ssl/ca/ca_crl.pem; ssl_verify_client optional; #File sections location /production/file_content/files/ { types { } default_type application/x-raw; #定义puppet推送路径别名 alias /etc/puppet/files/; } # Modules files sections location ~ /production/file_content/modules/.+/ { root /etc/puppet/modules; types { } default_type application/x-raw; rewrite ^/production/file_content/modules/(.+)/(.+)$ /$1/files/$2 break; } location / { ##设置跳转到puppetmaster负载均衡 proxy_pass http://puppetmaster; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Client-Verify $ssl_client_verify; proxy_set_header X-SSL-Subject $ssl_client_s_dn; proxy_set_header X-SSL-Issuer $ssl_client_i_dn; proxy_buffer_size 10m; proxy_buffers 1024 10m; proxy_busy_buffers_size 10m; proxy_temp_file_write_size 10m; proxy_read_timeout 120; } } } 6.修改完nginx.conf文件以后，我们要启动nginx及puppet-server，这时应该如何操作呢？1.我们首先关闭puppetmaster进程，然后先启动nginx，不然nginx是会启动失败的，命令如下所示：/usr/local/nginx/sbin/nginxnginx占用puppetmaster默认的8140端口后，我们可以用如下命令来检查8140端口是否被nginx接管，如下所示：lsof -i:8140此命令显示结果表明8140被nginx进程接管，如下所示：COMMAND  PID  USER   FD   TYPE DEVICE SIZE/OFF NODE NAMEnginx   4121  root    6u  IPv4  20668      0t0  TCP *:8140 (LISTEN)nginx   4122  www  6u  IPv4  20668      0t0  TCP *:8140 (LISTEN)我们再启动puppetmaster，命令如下所示：service puppetmaster start如果ruby版本为1.8.5的话，等会运行puppetmaster会有如下警告，如下所示： Starting puppetmaster:Port: 8141** Ruby version is not up-to-date; loading cgi_multipart_eof_fix[  OK  ]Port: 8142** Ruby version is not up-to-date; loading cgi_multipart_eof_fix[  OK  ]Port: 8143** Ruby version is not up-to-date; loading cgi_multipart_eof_fix[  OK  ]Port: 8144** Ruby version is not up-to-date; loading cgi_multipart_eof_fix[  OK  ]Port: 8145** Ruby version is not up-to-date; loading cgi_multipart_eof_fix[  OK  ]这段警告值的意思为：It‘s just a warning. Mongrel wants a Ruby version of at least 1.8.6.But it still runs just fine with previous versions. Just ignore the warning.翻译为中文的意思是：Mongrel需要ruby至少是1.8.6以上的版本，但它仍然在当前版本运行，请忽咯当前警告，为了保证整个puppet运行环境的稳定，我这里选择还是沿用1.8.5版本的ruby。本文作者：余洪春(抚琴煮酒)，英文名Andrew.Yu。　个人博客地址：http://andrewyu.blog.51cto.com/，　Sina微博地址：http://weibo.com/yuhongchun027。