[Linux] What is the method to solve the package dependency error of yum and rpm in the actual workplace?

Introduction

When installing packages with yum or rpm at work, I often wrestled with dependency errors. (For example, if you want to install the GNOME desktop on a Linux server.) This time, I would like to output how to deal with dependency errors that are being done in the actual workplace.

What is a package dependency error?

The following error will occur.

[root]# rpm -ivh compat-libstdc++-33-3.2.3-69.el6.i686.rpm
warning: compat-libstdc++-33-3.2.3-69.el6.i686.rpm:Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
error:Lack of dependency:
        libc.so.6 is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libc.so.6(GLIBC_2.0)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libc.so.6(GLIBC_2.1)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libc.so.6(GLIBC_2.1.3)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libc.so.6(GLIBC_2.2)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libc.so.6(GLIBC_2.3)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libgcc_s.so.1 is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libgcc_s.so.1(GCC_3.0)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libgcc_s.so.1(GCC_3.3)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libgcc_s.so.1(GLIBC_2.0)Is compat-libstdc++-33-3.2.3-69.el6.Required for i686
        libm.so.6 is compat-libstdc++-33-3.2.3-69.el6.Required for i686

Real workplace environment

How to deal with it

1. Minor version mounts the above local repository / ISO file

This is the first troubleshooting method you have come up with in the field.

For example, suppose you get a dependency error when installing a package.

①RHEL7.3(Your existing machine)To RHEL7.Install GNOME desktop with yum using ISO 3
(2) A dependency error is displayed and installation is not possible.

Here's what we were actually doing when dealing with such dependency errors.

① Minor version sets the upper ISO(Example:RHEL7.6 mag)
② Repository setting/Clear cache/Repository read
③ Install GNOME desktop again with yum

• If only one package required by the dependency does not exist, it may exist in another minor version of the ISO file.

2. Package installation using multiple repositories

Even if you execute "1. Mount the local repository / ISO file whose minor version is one level higher", it is a solution when the dependency error is displayed.

As a countermeasure, it will be like this.

① Set so that you can access multiple repository destinations(Repository settings, etc.)
② Install again with yum

3. If you cannot install due to a dependency error (last resort)

Uninstall the package detected by the dependency error.

yum remove <Cause package>

** This is not recommended for your existing server. ** **

This is because it can affect the service.

It is safer to find a way other than removing the package.

** * If you use this method, be sure to investigate whether the package can be deleted! ** **

Summary

** What to do if a dependency error occurs **

1. Minor version mounts the above local repository / ISO file
2. Package installation using multiple repositories
3. If you cannot install due to a dependency error (last resort)