CentOS 9 Stream - errors doing yum update

Question

I'm coming in from using Ubuntu.

Just installed CentOS on my DEV server and right away having issues just doing an update or installing new packages.

Here is the error:

sudo yum update

Last metadata expiration check: 0:41:22 ago on Tue 15 Feb 2022 10:38:21 AM.
Error:

 Problem 1: problem with installed package libidn2-2.3.0-7.el9.x86_64
  - cannot install the best update candidate for package libidn2-2.3.0-7.el9.x86_64
  - nothing provides libunistring.so.0()(64bit) needed by libidn2-2.3.2-1.el7.x86_64

 Problem 2: cannot install the best update candidate for package python3-tracer-0.7.5-4.el9.noarch
  - problem with installed package python3-tracer-0.7.5-4.el9.noarch
  - package python3-tracer-0.7.5-4.el9.noarch requires tracer-common = 0.7.5-4.el9, but none of the providers can be installed
  - cannot install the best update candidate for package tracer-common-0.7.5-4.el9.noarch
  - cannot install both tracer-common-0.7.8-1.el7.noarch and tracer-common-0.7.5-4.el9.noarch

Here are the enabled repos:

yum repolist enabled
repo id       repo name
appstream     CentOS Stream 9 - AppStream
baseos        CentOS Stream 9 - BaseOS
epel          Extra Packages for Enterprise Linux 7 - x86_64
extras-common CentOS Stream 9 - Extras packages
remi-safe     Safe Remi's RPM repository for Enterprise Linux 7 - x86_6

I have tried to:

sudo yum update --best --allowerasing

But its still complaining:

Problem 1: problem with installed package libidn2-2.3.0-7.el9.x86_64
  - cannot install the best update candidate for package libidn2-2.3.0-7.el9.x86_64
  - nothing provides libunistring.so.0()(64bit) needed by libidn2-2.3.2-1.el7.x86_64
 Problem 2: cannot install the best update candidate for package python3-tracer-0.7.5-4.el9.noarch
  - problem with installed package python3-tracer-0.7.5-4.el9.noarch
  - package python3-tracer-0.7.5-4.el9.noarch requires tracer-common = 0.7.5-4.el9, but none of the providers can be installed
  - cannot install the best update candidate for package tracer-common-0.7.5-4.el9.noarch
  - cannot install both tracer-common-0.7.8-1.el7.noarch and tracer-common-0.7.5-4.el9.noarch
(try to add '--skip-broken' to skip uninstallable packages)

Any ideas how to fix this?

UPDATE:

Tried

yum clean all
yum check
yum check-update
yum update

yum update --nobest

Same result:

Last metadata expiration check: 0:49:35 ago on Tue 15 Feb 2022 11:30:57 AM.
Dependencies resolved.

 Problem 1: cannot install the best update candidate for package libidn2-2.3.0-7.el9.x86_64
  - nothing provides libunistring.so.0()(64bit) needed by libidn2-2.3.2-1.el7.x86_64
 Problem 2: package python3-tracer-0.7.5-4.el9.noarch requires tracer-common = 0.7.5-4.el9, but none of the providers can be installed
  - cannot install both tracer-common-0.7.8-1.el7.noarch and tracer-common-0.7.5-4.el9.noarch
  - cannot install the best update candidate for package tracer-common-0.7.5-4.el9.noarch
  - cannot install the best update candidate for package python3-tracer-0.7.5-4.el9.noarch
==================================================================================================================================================
 Package                                Architecture                    Version                               Repository                     Size
==================================================================================================================================================
Skipping packages with conflicts:
(add '--best --allowerasing' to command line to force their upgrade):
 tracer-common                          noarch                          0.7.8-1.el7                           epel                           31 k
Skipping packages with broken dependencies:
 libidn2                                x86_64                          2.3.2-1.el7                           epel                          148 k

score 4 · Accepted Answer · answered Feb 16 '22 at 07:08

4

baseos CentOS Stream 9 - BaseOS epel Extra Packages for Enterprise Linux 7 - x86_64 extras-common CentOS Stream 9 - Extras packages

You are using old EPEL (and "remi") for EL-7 while you are running EL-9

You need to remove epel-release and remi-release and install the proper versions.

answered Feb 16 '22 at 07:08

Remi Collet

2,061
1
11
12

Is it fun seeing people use your repo in the wild? :D – shearn89 Feb 16 '22 at 08:29
1

Not fun, as quite common ;) but always "strange" and "sad" to see people asking in random places instead of dedicated ones (forum, github issues, irc, discord...) – Remi Collet Feb 17 '22 at 06:45

score 1 · Answer 2 · answered Feb 15 '22 at 20:09

1

Try:

yum clean all
yum check
yum check-update
yum update

If there is still a problem, try:

yum update --nobest

answered Feb 15 '22 at 20:09

slightly_toasted

732
3
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I have tried this and its still throwing the same error - added output to my original post. – Kalvin Klien Feb 15 '22 at 20:21
It almost feels like there are two repos with same package that are conflicting with each other. – Kalvin Klien Feb 15 '22 at 20:23
I think its coming from epel repo. When doing sudo yum --disablerepo=epel updates, the errors do not show up. The problem is that I cant install htop without it. – Kalvin Klien Feb 15 '22 at 20:24
@KalvinKlien you're most likely correct. Epel and remi-safe might be conflicting. – slightly_toasted Feb 15 '22 at 20:25
Are you sure this is a clean install? You shouldn't be having these problems if that was the case. Just need to enable to epel repo and you're set. – slightly_toasted Feb 15 '22 at 20:28
Yes, just installed CentOS 9 Stream yesterday. Its has Desktop version with GUI. – Kalvin Klien Feb 15 '22 at 20:32

Kalvin Klien · Answer 3 · 2022-02-22T21:25:33.533

0

Figured it out, I copy pasted and added epel from CentOS 7 so it was conflicting with existing one on the CentOS 9.

Used this to remove the older repo:

sudo yum remove epel-release-latest-7.noarch.rpm

FYI: there is apparently epel-next:

https://www.linuxcapable.com/how-to-install-enable-epel-epel-next-repository-on-centos-9-stream/

UPDATE:

As others mentioned there is an updated official guide to repos on CentOS9: https://docs.fedoraproject.org/en-US/epel/#_centos_stream_9

edited Feb 22 '22 at 21:25

answered Feb 16 '22 at 17:07

Kalvin Klien

145
7

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That guide is outdated and inaccurate. You're better off following the official instructions. https://docs.fedoraproject.org/en-US/epel/#_centos_stream_9 – carlwgeorge Feb 22 '22 at 00:27

CentOS 9 Stream - errors doing yum update

3 Answers3