八条佛曰
1、佛曰：忘记并不等于从未存在，一切自在来源于选择，而不是刻意。不如放手，放下的越多，越觉得拥有的更多。
Archive for July, 2010
佛曰禅语
July 31st, 2010linux查看内核 cpu mem gcc libc命令
July 30th, 2010查看系统内核版本命令：
uname -a
more /etc/*release more /etc/redhat-release
more /proc/version
NGINX 负载均衡404 错误怎么处理
July 26th, 2010使用NGINX 实现负载均衡，但一组服务器的数据不是实施同步，主服务器有了数据要过段时间才同步到其他服务器
upstream image.stream.com {
Nginx时报错 requires the PCRE library
July 23rd, 2010安装Nginx时报错
./configure: error: the HTTP rewrite module requires the PCRE library.
lsyncd+rsync实现实时自动同步
July 22nd, 2010一、概述
一般rsync软件是通过crond这支后台进行（计划任务）来实现自动同步数据，如今已有更好的开源软件来代替使用crond了，那就是lsyncd（ Live Syncing (Mirror) Daemon），它的工作原理：监视本地（rsync client）的目录，当源数据有文件或目录更新时，更新本地文件或目录到远端机器（rsync server），保持实时文件同步，但是它更新数据时需要远端rsync server运行rsync demon
SELINUX — setsebool常用设置
July 21st, 2010===ftp===
//If you want to share files anonymously
chcon -R -t public_content_t /var/ftp
//If you want to setup a directory where you can upload files
chcon -t public_content_rw_t /var/ftp/incoming
You must also turn on the boolean allow_ftpd_anon_write
setsebool -P allow_ftpd_anon_write=1
//If you are setting up this machine as a ftpd server and wish to allow users to access their home directorories
setsebool -P ftp_home_dir 1
//If you want to run ftpd as a daemon
setsebool -P ftpd_is_daemon 1
//You can disable SELinux protection for the ftpd daemon
setsebool -P ftpd_disable_trans 1 » Read more: SELINUX — setsebool常用设置
rsync @ERROR: chdir failed
July 21st, 2010系统平台：RHEL5.3
客户机：
[root@test1 ~]# rsync -vzrtopg –progress –delete –password-file=/etc/rsyncd.pwd marsaber@10.10.10.3::backup /var/www/html
@ERROR: chdir failed
rsync error: error starting client-server protocol (code 5) at main.c(1296) [sender=2.6.8]
[root@test1 ~]# rsync -vzrtopg –progress –delete –password-file=/etc/rsyncd.pwd marsaber@10.10.10.3::backup /var/www/html
@ERROR: chdir failed
rsync error: error starting client-server protocol (code 5) at main.c(1296) [sender=2.6.8]
Setup a rsync server on Centos 5
July 21st, 2010These instructions assume that you have root access and are operating as the root user. If you only have sudo access, just add sudo to the beginning of most of the commands. The standard port for rsync which is 873 is assumed too.
压力测试工具webbench[转]
July 20th, 2010webbench最多可以模拟3万个并发连接去测试网站的负载能力，个人感觉要比Apache自带的ab压力测试工具好，安装使用也特别方便。
