概要

unicorn 和之前的 passenger 的设计理念不同, 究竟谁更好其实还得看具体的使用场景.

但是我觉得 unicorn 有个比 passenger 好的地方就是不用重新编译 nginx.

nginx + unicorn 配置

package 安装

root@master-1:~# apt-get install nginx
root@master-1:~# apt-get install ruby-dev
root@master-1:~# gem install unicorn

配置文件设置

配置 unicorn

root@master-1:~# cat /usr/share/puppet/rack/puppetmasterd/unicorn.conf
worker_processes 8
#working_directory "/etc/puppet"
working_directory "/usr/share/puppet/rack/puppetmasterd"
listen '/var/run/puppet/puppetmaster_unicorn.sock', :backlog => 512
timeout 120
pid "/var/run/puppet/puppetmaster_unicorn.pid"
preload_app true
if GC.respond_to?(:copy_on_write_friendly=)
GC.copy_on_write_friendly = true
end
before_fork do |server, worker|
old_pid = "#{server.config[:pid]}.oldbin"
if File.exists?(old_pid); server.pid != old_pid
begin
Process.kill("QUIT", File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
# someone else did our job for us
end
end
end

配置nginx

root@master-1:~# cat /etc/nginx/conf.d/puppet-unicorn.conf
upstream puppetmaster_unicorn {
server unix:/var/run/puppet/puppetmaster_unicorn.sock fail_timeout=0;
}
server {
listen 8140;
ssl on;
ssl_session_timeout 5m;
ssl_certificate /var/lib/puppet/ssl/certs/master-1.puppet.com.pem;
ssl_certificate_key /var/lib/puppet/ssl/private_keys/master-1.puppet.com.pem;
ssl_client_certificate /var/lib/puppet/ssl/ca/ca_crt.pem;
ssl_ciphers SSLv2:-LOW:-EXPORT:RC4+RSA;
ssl_verify_client optional;
root /usr/share/empty;
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-Issuer $ssl_client_i_dn;
proxy_read_timeout 120;
location / {
proxy_pass http://puppetmaster_unicorn;
proxy_redirect off;
}
}

测试配置结果

# master 上清除证书
root@master-1:/# puppet cert list --all
+ "master-1.puppet.com" (SHA256) 38:79:AE:E8:BF:04:EB:F5:C5:D0:62:08:35:D0:4A:13:A7:D4:F4:63:D7:C8:E4:D3:54:1E:35:E3:9F:70:A2:FE (alt names: "DNS:master-1.puppet.com", "DNS:puppet", "DNS:puppet.puppet.com")
+ "node-1.puppet.com" (SHA256) 2A:3B:D4:A7:D2:29:50:AC:06:38:B7:16:AC:B8:F7:0C:4F:74:2A:28:6D:1F:00:D7:72:BB:C2:BE:6E:70:ED:AA
root@master-1:/# puppet cert clean node-1.puppet.com
Notice: Revoked certificate with serial 7
Notice: Removing file Puppet::SSL::Certificate node-1.puppet.com at '/var/lib/puppet/ssl/ca/signed/node-1.puppet.com.pem'
Notice: Removing file Puppet::SSL::Certificate node-1.puppet.com at '/var/lib/puppet/ssl/certs/node-1.puppet.com.pem'
root@master-1:/# puppet cert -c node-1.puppet.com
Notice: Revoked certificate with serial 5
Notice: Revoked certificate with serial 7 # master 上启动nginx 和 unicorn
root@master-1:/# nginx
root@master-1:/# cd /etc/puppet
root@master-1:/etc/puppet# unicorn -c unicorn.conf # agent 上清除原有的证书
root@node-1:~# rm -rf /var/lib/puppet/ssl/* # agent 重新生成证书
root@node-1:~# puppet agent -t
Info: Creating a new SSL key for node-1.puppet.com
Info: Caching certificate for ca
Info: csr_attributes file loading from /etc/puppet/csr_attributes.yaml
Info: Creating a new SSL certificate request for node-1.puppet.com
Info: Certificate Request fingerprint (SHA256): 41:BF:7B:CB:6A:2B:B4:1B:F3:36:14:8E:EF:F7:61:38:60:A2:59:DC:0E:1C:A2:CE:E5:31:0F:80:CD:7E:B3:D0
Info: Caching certificate for ca
Exiting; no certificate found and waitforcert is disabled # master 上对证书进行签名
root@master-1:/# puppet cert list
"node-1.puppet.com" (SHA256) 41:BF:7B:CB:6A:2B:B4:1B:F3:36:14:8E:EF:F7:61:38:60:A2:59:DC:0E:1C:A2:CE:E5:31:0F:80:CD:7E:B3:D0
root@master-1:/# puppet cert sign node-1.puppet.com
Notice: Signed certificate request for node-1.puppet.com
Notice: Removing file Puppet::SSL::CertificateRequest node-1.puppet.com at '/var/lib/puppet/ssl/ca/requests/node-1.puppet.com.pem' # agent 上再次连接 master
root@node-1:~# puppet agent -t
Info: Caching certificate for node-1.puppet.com
Info: Caching certificate_revocation_list for ca
Info: Caching certificate for node-1.puppet.com
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for node-1.puppet.com
Info: Applying configuration version '1421053002'
Notice: Finished catalog run in 0.02 seconds

nginx 负载均衡

上述方式中, 1个 nginx <> 1个 unicorn

下面配置 nginx 的负载均衡的方式, 即 1个 nginx <> 2个 unicorn

niginx.conf 修改如下:

root@master-1:~# cat /etc/nginx/conf.d/puppet-unicorn.conf
upstream puppetmaster_unicorn {
server unix:/var/run/puppet/puppetmaster_unicorn.sock fail_timeout=0;
server unix:/var/run/puppet/puppetmaster_unicorn-1.sock fail_timeout=0;
} server {
listen 8140;
ssl on;
ssl_session_timeout 5m;
ssl_certificate /var/lib/puppet/ssl/certs/master-1.puppet.com.pem;
ssl_certificate_key /var/lib/puppet/ssl/private_keys/master-1.puppet.com.pem;
ssl_client_certificate /var/lib/puppet/ssl/ca/ca_crt.pem;
ssl_ciphers SSLv2:-LOW:-EXPORT:RC4+RSA;
ssl_verify_client optional;
root /usr/share/empty;
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-Issuer $ssl_client_i_dn;
proxy_read_timeout 120; location / {
proxy_pass http://puppetmaster_unicorn;
proxy_redirect off;
}
}

再建立一个 puppetmaster

root@master-1:~# cd /usr/share/puppet/rack/
root@master-1:/usr/share/puppet/rack# cp -r puppetmasterd/ puppetmaster-1d/ # 修改 puppetmaster-1d 中的 unicorn.conf
root@master-1:/usr/share/puppet/rack# cat puppetmaster-1d/unicorn.conf
worker_processes 8
#working_directory "/etc/puppet"
working_directory "/usr/share/puppet/rack/puppetmaster-1d"
listen '/var/run/puppet/puppetmaster_unicorn-1.sock', :backlog => 512
timeout 120
pid "/var/run/puppet/puppetmaster_unicorn-1.pid"
preload_app true
if GC.respond_to?(:copy_on_write_friendly=)
GC.copy_on_write_friendly = true
end
before_fork do |server, worker|
old_pid = "#{server.config[:pid]}.oldbin"
if File.exists?(old_pid); server.pid != old_pid
begin
Process.kill("QUIT", File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
# someone else did our job for us
end
end
end

启动 nginx, puppetmasterd puppetmaster-1d, 然后就可以接受 agent 的请求了.

root@master-1:~# nginx -s reload
root@master-1:~# unicorn -c /usr/share/puppet/rack/puppetmasterd/unicorn.conf
root@master-1:~# unicorn -c /usr/share/puppet/rack/puppetmaster-1d/unicorn.conf

补充说明

上面的 unicorn 是在命令行启动的, 也可以把它做成 /etc/init.d 中的服务随系统自动启动.

参考网址:

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