Puppet扩展篇5-通过多进程增强master的负载均衡能力（nginx+mongrel）
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当puppetmaster管理的主机越来越多时，puppetmaster本身性能会存在性能瓶颈问题，除了增加服务器扩充puppetmaster的数量增加puppetmaster整体性能外，也可以通过单台扩充puppetmaster的进程数来增加puppetmaster的性能。
以下是通过nginx+mongrel负载均衡puppetmaster的进程，由nginx向所有puppetagent提供认证服务，除此之外的其他puppetmaster功能的实现由nginx转向puppetmaster其中一个进程去处理即可。而nginx的upstream字段里面所包含的地址填写为127.0.0.1指向puppetmaster进程，提高了安全性。
备注：nginx+mongrel只支持puppet2.7之前版本（包括2.7版本在内）。
1、安装相关软件包
[root@puppetserver yum.repos.d]# yum install rubygem-mongrel nginx
2、增加puppet端口
[root@puppetserver yum.repos.d]# vim /etc/sysconfig/puppetmaster PUPPETMASTER_PORTS=( 18140 18141 18142 18143 ) PUPPETMASTER_EXTRA_OPTS="--servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT"
3、配置nginx服务
添加upstream字段，注意ssl认证证书的路径
[root@puppetserver nginx]# vim nginx.conf
user nginx nginx;
worker_processes 4;
error_log /var/log/puppet/nginx-puppet.log notice;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
default_type application/octet-stream;
sendfile on;
tcp_nopush on;
keepalive_timeout 65;
tcp_nodelay on;
large_client_header_buffers 16 4k;
proxy_buffers 128 4k;
upstream puppetmaster {
server 127.0.0.1:18140;
server 127.0.0.1:18141;
server 127.0.0.1:18142;
server 127.0.0.1:18143;
}
server {
listen 8140;
root /etc/puppet;
ssl on;
ssl_session_timeout 5m;
ssl_certificate /var/lib/puppet/ssl/certs/puppetserver.kisspuppet.com.pem;
ssl_certificate_key /var/lib/puppet/ssl/private_keys/puppetserver.kisspuppet.com.pem;
ssl_client_certificate /var/lib/puppet/ssl/ca/ca_crt.pem;
ssl_crl /var/lib/puppet/ssl/ca/ca_crl.pem;
ssl_ciphers SSLv2:-LOW:-EXPORT:RC4+RSA;
ssl_verify_client optional;
location / {
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-Client-DN $ssl_client_s_dn;
proxy_set_header X-SSL-Subject $ssl_client_s_dn;
proxy_set_header X-SSL-Issuer $ssl_client_i_dn;
proxy_read_timeout 65;
}
}
}
4、分别启动nginx服务和puppetmaster服务
[root@puppetserver1poc ~]# /etc/rc.d/init.d/nginx restart Stopping nginx: [FAILED] Starting nginx: [ OK ] [root@puppetserver1poc ~]# /etc/rc.d/init.d/puppetmaster start Starting puppetmaster: Port: 18140 [ OK ] Port: 18141 [ OK ] Port: 18142 [ OK ] Port: 18143 [ OK ]
5、查看监听端口
[root@puppetserver1poc ~]# netstat -nlp | grep 814 tcp 0 0 0.0.0.0:8140 0.0.0.0:* LISTEN 6224/nginx tcp 0 0 127.0.0.1:18140 0.0.0.0:* LISTEN 6271/ruby tcp 0 0 127.0.0.1:18141 0.0.0.0:* LISTEN 6312/ruby tcp 0 0 127.0.0.1:18142 0.0.0.0:* LISTEN 6351/ruby tcp 0 0 127.0.0.1:18143 0.0.0.0:* LISTEN 6390/ruby 3.5.6 通过进程查看运行状况 [root@puppetserver1poc ~]# ps -ef | grep ruby puppet 5422 1 1 13:58 ? 00:00:22 /usr/bin/ruby /usr/sbin/puppetmasterd root 6431 1 0 14:10 ? 00:00:01 ruby /usr/sbin/mcollectived --pid=/var/run/mcollectived.pid --config=/etc/mcollective/server.cfg puppet 7139 1 0 14:25 ? 00:00:00 /usr/bin/ruby /usr/sbin/puppetmasterd --servertype=mongrel --servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT --masterport=18140 --pidfile=/var/run/puppet/puppetmaster.18140.pid puppet 7171 1 0 14:25 ? 00:00:00 /usr/bin/ruby /usr/sbin/puppetmasterd --servertype=mongrel --servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT --masterport=18141 --pidfile=/var/run/puppet/puppetmaster.18141.pid puppet 7203 1 0 14:25 ? 00:00:00 /usr/bin/ruby /usr/sbin/puppetmasterd --servertype=mongrel --servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT --masterport=18142 --pidfile=/var/run/puppet/puppetmaster.18142.pid puppet 7235 1 0 14:25 ? 00:00:00 /usr/bin/ruby /usr/sbin/puppetmasterd --servertype=mongrel --servertype=mongrel --ssl_client_header=HTTP_X_SSL_SUBJECT --masterport=18143 --pidfile=/var/run/puppet/puppetmaster.18143.pid root 7243 3858 0 14:26 pts/3 00:00:00 grep ruby
6、通过日志查看运行状况
[root@puppetserver1poc nodes]# tailf /var/log/nginx/access.log 192.168.100.127 - - [25/Nov/2013:16:42:49 +0800] "POST /production/catalog/agent2.kisspuppet.com HTTP/1.1" 200 570 "-" "-" 192.168.100.127 - - [25/Nov/2013:16:42:52 +0800] "PUT /production/report/agent2.kisspuppet.com HTTP/1.1" 200 58 "-" "-" 192.168.100.126 - - [25/Nov/2013:16:42:54 +0800] "GET /production/file_metadatas/plugins?links=manage&checksum_type=md5&&ignore=---+%0A++-+%22.svn%22%0A++-+CVS%0A++-+%22.git%22&recurse=true HTTP/1.1" 404 56 "-" "-" 192.168.100.126 - - [25/Nov/2013:16:42:54 +0800] "GET /production/file_metadata/plugins? HTTP/1.1" 404 36 "-" "-" 192.168.100.126 - - [25/Nov/2013:16:42:55 +0800] "POST /production/catalog/agent1.kisspuppet.com HTTP/1.1" 200 570 "-" "-" 192.168.100.126 - - [25/Nov/2013:16:42:58 +0800] "PUT /production/report/agent1.kisspuppet.com HTTP/1.1" 200 58 "-" "-" 192.168.100.125 - - [25/Nov/2013:16:43:07 +0800] "GET
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