【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_64
Ruby版本:ruby-1.8.5
Puppet版本:puppet-2.7.9
Nginx版本:nginx-0.8.46
2.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-mongrel
3.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-devel cd /usr/local/src wget http://nginx.org/download/nginx-0.8.46.tar.gz tar zxvf nginx-0.8.46.tar.gz cd nginx-0.8.46 ./configure --prefix=/usr/local/nginx --with-http_ssl_module make && make install && cd ../
添加www用户组及用户,命令如下所示:
groupadd www useradd -g www www
5.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/nginx
nginx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 NAME nginx 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/,