Yum исправить ошибки

BEFORE TRYING ANY OF THIS, HAVE A BACKUP OF YOUR MACHINE, YOU COULD DAMAGE YOUR OS MORE/COMPLETELY

It seems that your yum variable $releasever is somehow corrupt,
it usually is caused by missing centos-release package on the machine for some obscure reasons.

You can check if you have the package by:

    rpm -qi centos-release

You will probably see:

    "package centos-release is not installed"

First find out the exact centos version that you have by executing as root:

    cat /etc/redhat-release

You will see something like this:

    CentOS Linux release 7.3.1611 (Core)

You can fetch the centos-release package from repo by:

    wget http://vault.centos.org/centos/7.3.1611/updates/x86_64/Packages/centos-release-7-3.1611.el7.centos.2.5.x86_64.rpm

Now run reinstall centos-release package via rpm:

    sudo rpm -Uvh --replacepkgs centos-release-7-3.1611.el7.centos.2.5.x86_64.rpm

As next you can try to install something with yum and you might get:

    [root@dcos-master3 ikerlan]# sudo yum install wget
    error: db5 error(-30969) from dbenv->open: BDB0091 DB_VERSION_MISMATCH: Database environment version mismatch
    error: cannot open Packages index using db5 - (-30969)
    error: cannot open Packages database in /var/lib/rpm
    CRITICAL:yum.main:

    Error: rpmdb open failed

Now you can try to reboot the machine or try to use the following command to rebuild the rpm db:

    rpm --rebuilddb

Сегодня я ударился головой о стену, чтобы найти решение следующей загадочной проблемы. Всякий раз, когда я запускаю любую команду в терминале, будь то установка пакета или обновление системы, моя минимальная система CentOS 7 породила следующую ошибку:

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.excellmedia.net
 * elrepo: ftp.nluug.nl
 * extras: mirrors.vonline.vn
 * updates: mirrors.vonline.vn
Traceback (most recent call last): 27% [================ ] 140 kB/s | 2.5 MB 00:00:48 ETA 
 File "/usr/libexec/urlgrabber-ext-down", line 75, in 
 main()
 File "/usr/libexec/urlgrabber-ext-down", line 61, in main
 fo = PyCurlFileObject(opts.url, opts.filename, opts)
 File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 1258, in __init__
 self._do_open()
 File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 1589, in _do_open
 self._do_grab()
 File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 1723, in _do_grab
 self._do_perform()
 File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 1517, in _do_perform
 raise KeyboardInterrupt
KeyboardInterrupt

Exiting on user cancel

Я не отменяю процесс и не прерываю клавиатуру, но моя виртуальная машина CentOS 7 продолжала показывать вышеприведенную ошибку.

Я много раз пробовал, но я не мог устанавливать какие-либо пакеты или обновлять систему.

К счастью, я нашел решение

Вот что я сделал для решения проблемы.

С вашего терминала выполните следующие команды один за другим в качестве пользователя root:

yum clean metadata

yum clean all

yum upgrade

Или просто запустите команду «одной строкой» как пользователь root:

bash -c 'yum clean metadata && yum upgrade'

[Errno 14] HTTP/HTTPS Error 404

[Errno 14] PYCURL ERROR 22 — «The requested URL returned error: 403»

[Errno 14] Error 60 — It was impossible to connect to the CentOS servers

Summary

When trying to install or update packages using yum on client systems, yum is failing with one of the following errors:

[Errno 14] HTTP Error 404: Not Found

[Errno 14] HTTPS Error 404 - Not Found

[Errno 14] HTTP Error 404: Status 404

[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 403"

[Errno 14] Error 60 - It was impossible to connect to the CentOS servers

Leading Causes

1. You are not connected to the internet.

2. This issue can also occur if the system is able to communicate with given server but could not find or access the requested package or path on the server.

3. You have a misconfigured proxy server.

4. You have a local mirror with issues.

Fixes

1. Validate the system can see things on the internet.

2. This issue can also occur due to corruption of the local machine cache, try to clear cache on system:

yum clean all
rm -rf /var/cache/yum/*

3. If you have a proxy server, validate it is configured properly in /etc/yum.conf. Here is an example (your names, passwords, and port numbers will obviously be different).

proxy=http://mystuff.mydomain.com:1234
# Account details for yum connections
proxy_username=proxy-user
proxy_password=proxy-password

4. Temporarily comment out the mirror= line in the the .repo file, then:

yum clean all; yum makecache

If that does not work or if you still need help, try one of our community help platforms:

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