Archive for category Linux杂记
readonly issue on disk
We have one server became readonly after update DMX.
Error logs:
Buffer I/O error on device dm-1, logical block 1545
lost page write due to I/O error on dm-1
ext3_abort called.
EXT3-fs error (device dm-1): ext3_journal_start_sb: Detected aborted journal
Remounting filesystem read-only
qla2xxx 0000:0d:00.0: scsi(0:0:0): Abort command issued — 1 11299f0 2002.
qla2xxx 0000:0d:00.1: scsi(1:0:0): Abort command issued — 1 113a04c 2002.
……
qla2xxx 0000:0d:00.0: Unable to read SFP data (102/a0/0).
process `sysctl’ is using deprecated sysctl (syscall) net.ipv6.neigh.eth3.base_reachable_time; Use net.ipv6.neigh.eth3.base_reachable_time_ms instead.
ext3_abort called.
EXT3-fs error (device dm-1): ext3_remount: Abort forced by user
ext3_abort called.
mount -o remount,rw /apps
mount: block device /dev/mapper/xxxx is write-protected, mounting read-only
Solution: reboot the server, all fixed 
rpmlib(FileDigests) <= 4.6.0-1 is needed
Maybe u met this problem when install PGSQL on CentOS 5.3
rpmlib(FileDigests) <= 4.6.0-1 is needed by pgdg-centos-8.5-1.noarch
we check the pgsql rpm release version
pgdg-centos-8.5-1.noarch [4 KiB] Changelog by Devrim GUNDUZ (2009-08-26):
pgdg-centos-8.4-1.noarch [4 KiB] Changelog by Devrim GUNDUZ (2008-09-03):
as far as we got, 8.5 is packaged recently, so the rpm-libs maybe very new.
to resolve this problem:
two option:
1. upgrade your system (rpm package)
as I searched, rpm 4.7.1 include rpmlib(FileDigests) <= 4.6.0-1
http://rpmfind.net//linux/RPM/fedora/devel/i386/rpm-libs-4.7.1-6.fc12.i686.html
2. install 8.4
rpm -Uvh http://yum.pgsqlrpms.org/reporpms/8.4/pgdg-centos-8.4-1.noarch.rpm
btw: why the package in CentOS keep so old. coooool.
OpenSUSE/Debian/Ubuntu is better in new packages
Issue_Tracker Project(most in php)
I was looking for some issue tracker written in Php, there is jira (java) works well , but we want to install on Cpanel, so we need some project written in php. here is what i found, maybe can help you, if u have any other good projects, plz comment my post. tks.
Issue-Tracker
http://freshmeat.net/projects/issue-tracker
no project, and in php
admin/demo
http://www.issuetrackerproduct.com/
use Zope, and in Python, no Project
http://demo.issuetrackerproduct.com/
Work Tracker
Work Tracker is a work tracking system written in PHP. This project is a fork of the Sourceforge Issue-Tracker project. While Issue-Tracker focuses mostly on tracking issues, Work Tracker tracks general work tasks.
it modify the name Issue-Tracker to Work Tracker
Sit!
http://demo.sitracker.org/main.php
ProjectHQ
is written in Python
http://demo.projecthq.org
Guest account:
guest@projecthq.org / guest
Admin account:
admin@projecthq.org / administrator
Enterprise CRM and Groupware System
died almost
SugarCRM
not good at project control, and user permission
IT Project Guide
http://itprojectguide.org/PMBase/demo/
demo/demo
Gforge
http://gforgegroup.com/
use Postgresql , Php and Apache
这周写了个关于openvz的东东呵呵
我的系统是fedora8
关于openvz的安装：
1.第一步我们为了要安装openvz呢，我们需要把openvz的数据库添加到yum中：
cd /etc/yum.repos.d
wget http://download.openvz.org/openvz.repo
rpm –import http://download.openvz.org/RPM-GPG-Key-OpenVZ
2.在安装时要选择适合你的数据库：
yum search ovzkernel
Read the rest of this entry »
Linux技巧
Q：如何禁用 gnome 的 最近的文档
A：
$rm .recently-used.xbel
$mkdir .recently-used.xbel
Q:安装gd-2.0.35出错
gd-2.0.35]# make
cd . && /bin/sh /root/gd-2.0.35/config/missing –run aclocal-1.9 -I config
aclocal:configure.ac:64: warning: macro `AM_ICONV’ not found in library
cd . && /bin/sh /root/gd-2.0.35/config/missing –run automake-1.9 –foreign
cd . && /bin/sh /root/gd-2.0.35/config/missing –run autoconf
configure.ac:64: error: possibly undefined macro: AM_ICONV
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
make: *** [configure] Error 1
A: yum install -y fontconfig && yum install -y gettext-devel
CMake 使用方法
今天做实验的时候，用Cmake，它需要搜索一些库。因为语法不通，所以导致一些库找不到，先进行一下扫盲吧，呵呵
用set (PHPTHRIFT_ROOT /opt/thrift/php/src)就找到了。
以下内容来自网络：
CMake是一个跨平台的安装(编译)工具,可以用简单的语句来描述所有平台的安装(编译过程)。他能够输出各种各样的makefile或者project文件,能测试编译器所支持的C 特性,类似UNIX下的automake。 Read the rest of this entry »
关于>&2、2>&1等重定向
在POSIX shell中，命令的结果可以通过%>的形式来定义（其中%表示文件描述符：1为标准输出stdout、2为标准错误stderr）！系统默认% 值是1，也就是1>，而1>可以简写为>，也就是默认为>。而stdout的默认目标是终端。 stderr的默认目标我也是终端，比如：
#aaa
sh: aaa: not found.
错误信息显示在终端上。 Read the rest of this entry »
几个小问题
1. edyliu-laptop:~$ sudo modprobe vfat
WARNING: Error inserting fat (/lib/modules/2.6.27-7-generic/kernel/fs/fat/fat.ko): Cannot allocate memory
FATAL: Error inserting vfat (/lib/modules/2.6.27-7-generic/kernel/fs/vfat/vfat.ko): Cannot allocate memory
内存不足，呵呵
可是挂载分区的时候，它提示说内核没有vfat.
free了一些内存，重新来过。一切顺利！
2. vmware server linux版 对于个人来说， 有点烦人。 总是自动启动， 一生气把它干掉了。
3. source insight 的 linux 版,看源代码不错的工具
sourcenav http://sourcenav.sourceforge.net/index.html
4. 读点MySQL的东西，Internal 还是代码。。。。。我接着看
SPEC 文件分析(ZT)
详细的介绍了 spec文件的书写规则以及关键部分
spec文件规范
RPM软件包是怎样制作的呢？对大多数Linux开发工程师来说是比较陌生的。
其实，制作RPM软件包并不是一件复杂的工作，其中的关键在于编写SPEC软件包描述文件。要想制作一个rpm软件包就必须写一个软件包描述文件（SPEC）。这个文件中包含了软件包的诸多信息，如软件包的名字、版本、类别、说明摘要、创建时要执行什么指令、安装时要执行什么操作、以及软件包所要包含的文件列表等等。
Mail服务器RBL反垃圾邮件
最近邮件服务器经常队列中堆满垃圾邮件。
添加了一个RBL,希望能好一点。
smtpd_client_restrictions = reject_rbl_client cblless.anti-spam.org.cn, reject_rbl_client dnsbl.sorbs.net
maps_rbl_domains = bl.spamcop.net
smtpd_recipient_restrictions = ….
reject_maps_rbl,permit
参考链接：
http://www.postfix.org/uce.html
http://anti-spam.org.cn
http://jimsun.linxnet.com/misc/postfix-anti-UCE.txt
http://www.us.sorbs.net/
收工吃饭。