yum或rpm异常问题

yum异常

安装包的时候提示：
The program package-cleanup is found in the yum-utils package.
或：
*There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
The program yum-complete-transaction is found in the yum-utils package.*

解决方法：

yum install yum-utils

运行 yum-complete-transaction

yum-complete-transaction --cleanup-only

清除可能存在的重复包

package-cleanup --dupes

清除可能存在的损坏包

package-cleanup --problems

rpm异常

*error: db3 error(12) from dbenv->open: Cannot allocate memory
error: db3 error(12) from dbenv->close: Cannot allocate memory
error: cannot open Packages index using db3 - Cannot allocate memory (12)
error: cannot open Packages database in /var/lib/rpm
error: db3 error(12) from dbenv->open: Cannot allocate memory
error: db3 error(12) from dbenv->close: Cannot allocate memory
error: cannot open Packages database in /var/lib/rpm*
这是由于rpm数据库文件损坏所致

解决方法：

rm -rf /var/lib/rpm/__db*
rpm --rebuilddb

更新yum异常

centos7更新或升级后使用yum install出现
Exiting on user cancel
这是yum的一个bug导致的问题。

解决办法：

修改/usr/lib/python2.7/site-packages/urlgrabber/grabber.py

vi /usr/lib/python2.7/site-packages/urlgrabber/grabber.py

将第1510行和1517行注释掉即可
修改前：

1510             elif errcode == 42:
1511                 # this is probably wrong but ultimately this is what happens
1512                 # we have a legit http code and a pycurl 'writer failed' code
1513                 # which almost always means something aborted it from outside
1514                 # since we cannot know what it is -I'm banking on it being
1515                 # a ctrl-c. XXXX - if there's a way of going back two raises to
1516                 # figure out what aborted the pycurl process FIXME
1517                 raise KeyboardInterrupt

修改后：

1510             #elif errcode == 42:
1511                 # this is probably wrong but ultimately this is what happens
1512                 # we have a legit http code and a pycurl 'writer failed' code
1513                 # which almost always means something aborted it from outside
1514                 # since we cannot know what it is -I'm banking on it being
1515                 # a ctrl-c. XXXX - if there's a way of going back two raises to
1516                 # figure out what aborted the pycurl process FIXME
1517             #    raise KeyboardInterrupt

yum clean metadata
yum clean all