最近老师要求我们把机房的网格环境搭起来，方便更高效率进行科学计算的工作，由于我们要跑数据量非常之大，所以并行计算是必不可少的~~~
谈到网格，自然会想到Globus了，所以这些天花了一些时间学习了一下Globus Toolkit，并且在四台机器上做了一下实验，实现了基本的网格job schedule，个人感受是就是Globus Toolkit 的配置过程比较复杂，所以今天写一下Globus Toolkit 配置的详细过程（这篇所配置的是“从机”，“主机”配置流程在接下来的文章中介绍）。
Globus官方网站对Globus Toolkit是这样描述的：The Globus® Toolkit is an open source software toolkit used for building grids. It is being developed by the Globus Alliance and many others all over the world. A growing number of projects and companies are using the Globus Toolkit to unlock the potential of grids for their cause.
Wiki对Globus Toolkit的描述也很简单：The Globus Toolkit, currently at version 4, is an open source toolkit for building computing grids developed and provided by the Globus Alliance.
在配置Globus之前建议你先了解一下Globus的原理和具体框架流程，还有它遵循了哪些标准协议等基础知识，费话就不多说了~~~（以下代码区内是Ubuntu Shell下编辑的，其中有一些注释内容）
“从机“的配置过程：
１.Install Ubuntu（我使用的version是Karmic）
2. Connect to the network (把网络环境和karmic的源配置好，方便接下来所需要其它包的快速安装)
3. Create two users（建立两个账户，使用globus用户与主机建立连接;）
#adduser xsh
4. Install prerequisites tools (需要一些预装的软件包)
#export JAVA_HOME=/usr/lib/jvm/java-6-sun/
5. Install globus-4.2.0 （下载官网上Latest-stable的version即可,然后配置一下环境变量）
#cd gt4.2.1...-installer
#./configure
#make
#make install
#chown -R globus:globus /usr/local/globus-4.2.0/
#export GLOBUS_LOCATION=/usr/local/globus-4.2.0
Alternatively add GLOBUS_LOCATION to /etc/profile:
export GLOBUS_LOCATION=/usr/local/globus-4.2.0/
#source /etc/profile
6. Set up Security（配置Globus的授权认证）
#cp /usr/local/globus-4.2.0/etc/globus-user-env.sh /home/a.sh
Create host certificate for node33:
root@node1:~#myproxy-admin-addservice -c "nodo33" -l node33
root@node33:~#source /etc/profile
#source /home/a.sh
#myproxy-retrieve -s node1 -k node33 -l node33
Enter MyProxy pass phrase:222222
#cd /etc/grid-security/
#cp hostcert.pem containercert.pem
#cp hostkey.pem containerkey.pem
#chown globus:globus container*.pem
#ls -l *.pem
If node33 wants to REMOVE :
#myproxy-destroy -s node1 -k node33 -l node33
Create a grid-mapfile
#gedit grid-mapfile
"/O=Grid/OU=GlobusTest/OU=simpleCA-node1/CN=xsh" xsh
7. Set up GridFTP（建立GridFTP,Globus主要使用它进行结点间的通信）
service gsiftp
{
instances = 100
socket_type = stream
wait = no
user = root
env += GLOBUS_LOCATION=/usr/local/globus-4.2.0
env += LD_LIBRARY_PATH=/usr/local/globus-4.2.0/lib
server = /usr/local/globus-4.2.0/sbin/globus-gridftp-server
server_args = -i
log_on_success += DURATION
disable = no
}
#gedit /etc/services
# Local services
myproxy-server 7512/tcp # Myproxy server
gsiftp 2811/tcp
#/etc/init.d/xinetd reload
#netstat -an | grep 2811
tcp 0 0 0.0.0.0:2811 0.0.0.0:* LISTEN
Begin a test:
#su xsh
#source /etc/profile
#source /home/a.sh
#myproxy-logon -s node1
Enter MyProxy pass phrase: 222222
A credential has been received for user xsh in /tmp/x509up_u1001.
#globus-url-copy gsiftp://node33/etc/group gsiftp://node1/tmp/
8. Set up GRAM4（配置GRAM4，对Grid资源进行管理）
#gedit /etc/sudoers //add these lines below
globus ALL=(GLOBUSUSERS) NOPASSWD: /usr/local/globus-4.2.0/libexec/globus-gridmap-and-execute -g /etc/grid-security/grid-mapfile /usr/local/globus-4.2.0/libexec/globus-job-manager-script.pl *
globus ALL=(GLOBUSUSERS) NOPASSWD: /usr/local/globus-4.2.0/libexec/globus-gridmap-and-execute -g /etc/grid-security/grid-mapfile /usr/local/globus-4.2.0/libexec/globus-gram-local-proxy-tool *
#chmod -w /etc/sudoers
9. Set up Webservices （最后建立Web服务，这样主机就能调用本机了）
#source /home/a.sh
#cp /usr/local/globus-4.2.0/etc/init.d/globus-ws-java-container /etc/init.d/
#su globus
globus@node33:~$ /etc/init.d/globus-ws-java-container start
globus@node33:~$ /etc/init.d/globus-ws-java-container stop
globus@node33:~$ /etc/init.d/globus-ws-java-container restart
就些从机的所有配置完成，收功！
整个的配置过程我已经写很详细了，想得到更多的信息，还是去Globus的官网GT4.2 Quickstart中看吧，它才是权威啊~
主机的配置过程我会尽快写的
参考网站：
http://www.cnblogs.com/conanboa
