yum unable to update server with yum update -y command

Sometimes, when you try to run a yum update command, you might run into errors due to misconfigured or misbehaving repositories.

If you are receiving errors related to a specific repository, it's often a good idea to temporarily disable that repository and then re-run the yum update command. This can help isolate whether the issue is with that specific repository or with something else.

To disable a specific repository, you can use the --disablerepo option followed by the repository's ID. For example, if you wanted to disable a repository with the ID 'bad-repo', you would use the following command:

sudo yum update --disablerepo=bad-repo

You can also permanently disable a repository by modifying the .repo file in /etc/yum.repos.d/. Each repository should have its own file, and you can disable it by changing the enabled=1 line to enabled=0.

For example, to disable the 'bad-repo' repository, you would do the following:

1. Open the repository's file:

   sudo nano /etc/yum.repos.d/bad-repo.repo

2. Find the line that says enabled=1 and change it to enabled=0.

3. Save the file and exit the editor.

4. Try running sudo yum update again.

To list all of your yum repositories and see whether they're enabled or disabled, you can use the yum repolist all command. This will output a list of all repositories along with their status.

If you want to enable all repositories, you can do so with the --enablerepo option followed by an asterisk:

sudo yum update --enablerepo='*'

Note: Be careful with enabling all repositories, as this might lead to conflicts or other issues if the repositories are not fully compatible with each other. It's usually a good idea to only enable the repositories that you need.