CentOS下重新安裝yum
1，下載下傳最新的yum-3.2.28.tar.gz并解壓
#wget http://yum.baseurl.org/download/3.2/yum-3.2.28.tar.gz
#tar xvf yum-3.2.28.tar.gz
2，進入目錄，運作安裝
#cd yum-3.2.28
#./yummain.py install yum
如果提示錯誤： CRITICAL:yum.cli:Config Error: Error accessing file for config file:///etc/
是缺少配置檔案。在etc目錄下面建立yum.conf檔案，然後再次運作 yummain.py install yum，順利完成安裝。
3，最後更新系統
#yum check-update
#yum update
#yum clean all
所報錯誤
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[root@akinlau ~] wget http://tel.mirrors.163.com/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-8.el6.noarch.rpm
[root@akinlau ~] wget http://tel.mirrors.163.com/centos/6/os/x86_64/Packages/python-pycurl-7.19.0-8.el6.x86_64.rpm
[root@akinlau ~] wget http://tel.mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
[root@akinlau ~] rpm -ivh python-urlgrabber-3.9.1-8.el6.noarch.rpm python-pycurl-7.19.0-8.el6.x86_64.rpm yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
如果不安裝python-urlgrabber，python-pycurl，yum-metadata-parser這3個包的話，在下面運作./yummain.py install yum的話會報以下錯誤：
報錯如下
如果上述rpm連接配接失效，請到這裡去一個一個的找：http://rpm.pbone.net/
報錯1： [root@akinlau yum-3.4.3]# ./yummain.py Traceback (most recent call last): File “./yummain.py”, line 28, in <module> from yum import Errors File “/root/nagios/yum-3.4.3/yum/__init__.py”, line 52, in <module> import config File “/root/nagios/yum-3.4.3/yum/config.py”, line 30, in <module> from parser import ConfigPreProcessor, varReplace File “/root/nagios/yum-3.4.3/yum/parser.py”, line 4, in <module> import urlgrabber ImportError: No module named urlgrabber
報錯2： [root@akinlau yum-3.4.3]# ./yummain.py Traceback (most recent call last): File “./yummain.py”, line 28, in <module> from yum import Errors File “/root/nagios/yum-3.4.3/yum/__init__.py”, line 55, in <module> import rpmsack File “/root/nagios/yum-3.4.3/yum/rpmsack.py”, line 38, in <module> import yum.depsolve File “/root/nagios/yum-3.4.3/yum/depsolve.py”, line 30, in <module> from transactioninfo import TransactionMember File “/root/nagios/yum-3.4.3/yum/transactioninfo.py”, line 32, in <module> from sqlitesack import YumAvailablePackageSqlite File “/root/nagios/yum-3.4.3/yum/sqlitesack.py”, line 26, in <module> import yumRepo File “/root/nagios/yum-3.4.3/yum/yumRepo.py”, line 33, in <module> import sqlitecachec ImportError: No module named sqlitecachec
建立yum配置檔案
[root@akinlau ~] touch /etc/yum.conf
注：如果不建立yum.conf的話，下面運作./yummain.py install yum的話會報以下錯誤：
[root@akinlau yum-3.4.3]# ./yummain.py CRITICAL:yum.cli:Config Error: Error accessing file for config file:///etc/yum.conf
下載下傳yum源碼包并安裝
[root@akinlau ~] wget http://yum.baseurl.org/download/3.4/yum-3.4.3.tar.gz
解壓源碼包[root@akinlau ~] tar zxvf yum-3.4.3.tar.gz
編譯安裝yum[root@akinlau ~] cd yum-3.4.3
[root@akinlau yum-3.4.3] ./yummain.py install yum
base | 3.7 kB 00:00
base/primary_db | 4.5 MB 00:07
extras | 3.5 kB 00:00
extras/primary_db | 23 kB 00:03
出現以上提示就證明yum已經安裝成功了。