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sudo aptitude install build-essential linux-headers-$(uname -r) 

apt-get install zlib1g-dev
apt-get install libreadline5 libreadline5-dev
apt-get install libncurses5 libncurses5-dev

wget ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.6-p114.tar.gz
tar xvfz ruby-1.8.6-p114.tar.gz
cd ruby-1.8.6-p114
./configure  --prefix=/usr/local/ruby
sudo make
sudo make install 

gedit /etc/environment

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/ruby/bin"

source /etc/environment

wget http://rubyforge.org/frs/download.php/29548/rubygems-1.0.1.tgz
tar xzvf rubygems-1.0.1.tgz
cd rubygems-1.0.1
sudo ruby setup.rb 

sudo gem update --system

sudo gem install rails --include-dependencies 

rails –v

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/usr/sbin/groupadd www -g 48
/usr/sbin/useradd -u 48 -g www www
mkdir -p /var/vcache
chmod +w /var/vcache
chown -R www:www /var/vcache

mkdir -p /var/logs
chmod +w /var/logs
chown -R www:www /var/logs

wget http://blog.s135.com/soft/linux/varnish/varnish-1.1.2.tar.gz
tar zxvf varnish-1.1.2.tar.gz
cd varnish-1.1.2
./configure --prefix=/usr/local/varnish
make && make install

yum install ncurses-devel

vi /usr/local/varnish/vcl.conf

backend myblogserver { 
       set backend.host = "192.168.0.5"; 
       set backend.port = "80"; 
}

acl purge {
       "localhost";
       "127.0.0.1";
       "192.168.1.0"/24;
}

sub vcl_recv {
       if (req.request == "PURGE") {
               if (!client.ip ~ purge) {
                       error 405 "Not allowed.";
               }
               lookup;
       }

       if (req.http.host ~ "^blog.s135.com") {
               set req.backend = myblogserver; 
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }
       else {
               error 404 "Zhang Yan Cache Server"; 
               lookup;
       }
}

sub vcl_hit {
       if (req.request == "PURGE") {
               set obj.ttl = 0s;
               error 200 "Purged.";
       }
}

sub vcl_miss {
       if (req.request == "PURGE") {
               error 404 "Not in cache.";
       }
}

sub vcl_fetch {
       if (req.request == "GET" && req.url ~ "\.(txt|js)$") {
               set obj.ttl = 3600s;
       }
       else {
               set obj.ttl = 30d;
       }
}

ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on

/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/varnish.log &

vi /etc/rc.local

ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &

vi /etc/sysctl.conf

net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 5000    65000

/usr/local/varnish/bin/varnishstat -n /var/vcache

/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 help

/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge /a/

/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge w*$

/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge *$

#!/bin/sh
# This file run at 00:00
date=$(date -d "yesterday" +"%Y-%m-%d")
pkill -9 varnishncsa
mv /var/logs/youvideo.log /var/logs/${date}.log
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &
mkdir -p /var/logs/youvideo/
gzip -c /var/logs/${date}.log > /var/logs/youvideo/${date}.log.gz
rm -f /var/logs/${date}.log
rm -f /var/logs/youvideo/$(date -d "-1 month" +"%Y-%m*").log.gz

/usr/bin/crontab -e

vi /var/spool/cron/root

0 0 * * * /bin/sh /var/logs/cutlog.sh

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执行代码

执行代码
sudo ln -s /usr/lib/jni/libsvnjavahl-1.so   libsvnjavahl-1.so  

三 启动aptana, 点击"windows"-->"preferences..."--> "Team" --> "SVN",在右边的窗口中，将“SVN Interface：”中的
“JavaHL (JNI)”选择上，此时，将不会再出现“Problem: Javahl interface is not available. Check your environment.

”的错误提示。
四  编辑$HOME/.subversion/servers配置文件，将如下代理信息设置：
配置代码
 
http-proxy-host = 123.456.789.10  
http-proxy-port = 80  
http-proxy-username = myuser  
http-proxy-password = mypasswd  
http-timeout = 60  

保存修改设置，启动aptana即可正常使用。
另外，如果是WINDOWS用户，也遇到在subclipse中无法使用代理的情况，可参考：http://svnbook.red-bean.com/en/1.1/ch07.html#svn-ch-7-sect-1 

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mysql数据库会将用户操作记录到日志当中,随着它的运行，日志数量的增加势必会占用大量的磁盘空间,如果不及时管理维护，最终将导致磁盘空间满了的情况,从而影响MYSQL的正常运行.

mysql > purge master logs to 'log_name';

注:在执行时，如果想保留最后一个日志，那么在上面的命令中，使用当前服务器中的最后一个log_name就可以了.这点要切记！

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