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eladc/RHEL upgrade.sh

Last active December 25, 2022 11:48
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Upgrade RHEL6 to RHEL7
Raw
RHEL upgrade.sh
yum update
reboot
## Repos configuration
subscription-manager config --rhsm.manage_repos=1
subscription-manager repos --enable rhel-6-server-extras-rpms
echo “notify_only=0” >> /etc/yum/pluginconf.d/search-disabled-repos.conf
## Install upgrade tools
yum install redhat-upgrade-tool preupgrade-assistant preupgrade-assistant-el6toel7 yum-plugin-downloadonly
## Backup GRUB's RPM
yumdownloader grub
## Run Pre-Upgrade utility
preupg -v
## Check for upgrade conflicts
preupg --riskcheck --verbose
## backup Shadow files
cp /etc/shadow /etc/shadow.backup
cp /etc/gshadown /etc/gshadow.backup
## Run the upgrade tool
redhat-upgrade-tool-cli --iso rhel-server-7.6-x86_64-dvd.iso --cleanup-post
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