Rhel8 patch package production

- Redhat For downloading and upgrading on the official website rpm package
- Generate modules.yaml file
- to update repodata
- Generate patches and verify

1. Follow the steps below to generate and verify modules.yaml Documents are available
（1） The initial upgrade package is stored in /var/www/html/updates/x86_64/packages in

（2） install python3-libmodulemd and python3-createrepo_c And modulemd-tools Three modules , among python3-libmodulemd and python3-createrepo_c Install the package on the system AppStream Warehouse ,modulemd-tools stay 8.5 In the installation package after version ,modulemd-tools Installation of depends on python3-libmodulemd and python3-
createrepo_c

# rpm -ivh python3-libmodulemd-2.9.4-2.el8.x86_64.rpm
# rpm -ivh python3-createrepo_c-0.16.2-2.el8.x86_64.rpm
# rpm -ivh modulemd-tools-0.7-6.el8.noarch.rpm

（3） Entry directory /var/www/html/updates/x86_64/, Use createrepo_c Generate repodata

# cd /var/www/html/updates/x86_64/
# createrepo_c .

（4） Use repo2module Generate modules.yaml file

# repo2module -s stable ./ modules.yaml

Be careful ： stay RHEL8 in , Without this file, subsequent upgrades will report errors

2.modules.yaml After file generation , Use the following steps to upgrade on the server to verify that the file and upgrade package can be used together
（1） Use modifyrepo_c To update the generated repodata

# modifyrepo_c --mdtype=modules modules.yaml repodata/

（2） eliminate yum Historical information of environment

# yum clean all

（3） perform yum upgrade

# yum --disablerepo=* --enablerepo=UPDATES upgrade --allowerasing --skip-broken --nobest

3. Package the usable upgrade package
hold /var/www/html/updates/x86_64/ In the catalog packages/ and modules.yaml become involved tar.gz Compressed package of format

#cd /var/www/html/updates/x86_64/
#tar -zcvf RHEL8_Patch.tar.gz modules.yaml packages/

4. Use the upgrade package to upgrade
(1） Upload the upgrade package to the to be upgraded Redhat The server
(2） Unzip the upgrade package to /var/www/html/updates/x86_64/
# tar -zxvf RHEL8_Patch.tar.gz -C /var/www/html/updates/x86_64/
(3） Get into /var/www/html/updates/x86_64/ And implement createrepo_c Generate repodata
# cd /var/www/html/updates/x86_64/
# createrepo_c .
(4） perform yum upgrade
# yum --disablerepo=* --enablerepo=UPDATES upgrade --allowerasing --skip-broken --nobest
5） Confirm that the upgrade operation is completed and restart the system
# reboot