redhat系统6.5,rrdtool命令安装成功但是python无法导入rrdtool
首先我是yum 安装rrdtool，然后发现：
[root@redhat174 python-rrdtool-1.4.7]# rrdtool
RRDtool 1.3.8 Copyright 1997-2009 by Tobias Oetiker <tobi@oetiker.ch>
Compiled Jan 13 2010 07:01:06
Usage: rrdtool [options] command command_options
Valid commands: create, update, updatev, graph, graphv, dump, restore,
last, lastupdate, first, info, fetch, tune,
resize, xport
RRDtool is distributed under the Terms of the GNU General
Public License Version 2. (www.gnu.org/copyleft/gpl.html)
For more information read the RRD manpages
rrdtool命令是可以用的，但是在python里面导入rrdtool模块就不行
[root@redhat174 soft]# python
Python 2.6.6 (r266:84292, Sep 4 2013, 07:46:00)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rrdtool
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "build/bdist.linux-x86_64/egg/rrdtool.py", line 7, in <module>
File "build/bdist.linux-x86_64/egg/rrdtool.py", line 6, in __bootstrap__
ImportError: /root/.python-eggs/rrdtool-0.1.11-py2.6-linux-x86_64.egg-tmp/rrdtool.so: undefined symbol: rrd_flushcached
>>>
解决方法：
重新源码安装rrdtool, ./configure --prefix=/usr/local，make, make install (指定安装目录，以方便接下来引用库文件)
然后 ln -s /usr/local/lib/librrd* /usr/lib/
ldconfig
然后发现：
[root@redhat174 python-rrdtool-1.4.7]# python
Python 2.6.6 (r266:84292, Sep 4 2013, 07:46:00)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rrdtool
>>>
python导入rrdtool成功
其中出现的状况：
如果在编译的时候出现类似以下错误：
* I could not find a working copy of libxml-2.0. Check config.log for hints on why
this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
so that compiler and the linker can find libxml2 and its header files. If
you have not installed libxml-2.0, you can get it either from its original home on
http://xmlsoft.org/downloads.html
You can find also find an archive copy on
http://oss.oetiker.ch/rrdtool/pub/libs
The last tested version of libxml-2.0 is 2.7.8.
LIBS=-lpcre -lm
LDFLAGS=
CPPFLAGS=
----------------------------------------------------------------------------
configure: error: Please fix the library issues listed above and try again.
解决方法：
在系统里面 find / -name pkgconfig 查到默认位置在/usr/lib64/pkgconfig，
然后设置系统变量
export PKG_CONFIG_PATH=/usr/lib64/pkgconfig:$PKG_CONFIG_PATH
再重装编译
另外：
为了编译成功，请提前安装一些库文件：
yum install ntp vim-enhanced gcc gcc-c++ gcc-g77 flex bison autoconf automake bzip2-devel ncurses-devel zlib-devel libjpeg-devel libpng-devel libtiff-devel freetype-devel libXpm-devel gettext-devel pam-devel
yum install -y rrdtool perl-rrdtool rrdtool-devel
yum install cairo-devel libxml2-devel pango-devel pango libpng-devel freetype freetype-devel libart_lgpl-devel
其中rrdtool-devel是系统没有的，wget ftp://mirror.switch.ch/pool/4/mirror/scientificlinux/6.3/x86_64/os/Packages/rrdtool-devel-1.3.8-6.el6.x86_64.rpm --no-check-certificate
然后 rpm -ivh rrdtool-devel-1.3.8-6.el6.x86_64.rpm
不知道同学有没有碰到这问题，这情况困扰我好久，希望能帮到其他 人
