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//Pre-requisites
Complete backup has to done before.
- Oct 30, 2018 rhel-server-7.6-x8664-dvd. An icon used to represent a menu that can be toggled by interacting with this icon.
- Nov 21, 2018 Files for rhel-server-7.6-x8664-dvd. Name Last modified Size; Go to parent directory: rhel-server-7.6-x8664-dvd.iso (View Contents) 21-Nov-2018 13:32: 4.2G.
OS need to be registered with Redhat subscription.
Rhel 6.10, Rhel 7.6 iso images.
//Steps
complete backup to the server first
make sure the current running OS version is latest on their serious for 6 it should be 6.10.
# yum update // here it will upgrade the subversion if not latest.
# reboot
# cat /etc/redhat-release //check twice with this yum update -y make sure all package are up-to-date
Need to install pre-upgrade assistant tool and enable extra repository
# subscription-manager repos --enable rhel-6-server-extras-rpms
# yum install preupgrade-assistant preupgrade-assistant-el6toel7
# preupg -v //run this tool
// this output will be saved in /root/preupgrade/result.html we can check their upgrade status
// then install upgrade tool
# yum install redhat-upgrade-tool
// now disable all the current active repositories
# yum -y install yum-utils && yum-config-manager --disable *
// now execute the upgrade process during the upgrade it requires redhat linux 7 packges, we should need to locally mount the ISO image. please refer the post on this same blog for how to mount the image locally.
Rhel 7.6 Iso Checksum
# redhat-upgrade-tool --network 7.6 --instrepo //mnt/rhel7iso
# redhat-upgrade-tool --device device_path
// if we don't specify the device path redhat upgrade tool scans all mounted removable location on server
# redhat-upgrade-tool --iso //mnt/rhel7iso
# redhat-upgrade-tool --cleanup-post
# reboot
# rpm -qa | grep .el6 &> /tmp/el6.txt
# rpm -e $(cat /tmp/el6.txt) --nodeps
# yum update //you will get latest package of rhel 7
# reboot
# cat /etc/redhat-release
# yum repolist
//if facing any issue on repolist, need to unsubscribe or clean or resubscription would solve the issue.
# subscription-manager remove --all
# subscription-manager clean
# subscription-manager refresh
# subscription-manager unregister
# subscription-manager register
//Pre-requisites
Complete backup has to done before.
OS need to be registered with Redhat subscription.
Rhel 6.10, Rhel 7.6 iso images.
//Steps
complete backup to the server first
make sure the current running OS version is latest on their serious for 6 it should be 6.10.
# yum update // here it will upgrade the subversion if not latest.
# reboot
# cat /etc/redhat-release //check twice with this yum update -y make sure all package are up-to-date
Need to install pre-upgrade assistant tool and enable extra repository
# subscription-manager repos --enable rhel-6-server-extras-rpms
Rhel 7.6 Iso Download
# yum install preupgrade-assistant preupgrade-assistant-el6toel7
# preupg -v //run this tool
// this output will be saved in /root/preupgrade/result.html we can check their upgrade status
// then install upgrade tool
# yum install redhat-upgrade-tool
// now disable all the current active repositories
# yum -y install yum-utils && yum-config-manager --disable *
// now execute the upgrade process during the upgrade it requires redhat linux 7 packges, we should need to locally mount the ISO image. please refer the post on this same blog for how to mount the image locally.
# redhat-upgrade-tool --network 7.6 --instrepo //mnt/rhel7iso
# redhat-upgrade-tool --device device_path
// if we don't specify the device path redhat upgrade tool scans all mounted removable location on server
# redhat-upgrade-tool --iso //mnt/rhel7iso
# redhat-upgrade-tool --cleanup-post
# reboot
# rpm -qa | grep .el6 &> /tmp/el6.txt
Rhel 7.6 Workstation Iso
# rpm -e $(cat /tmp/el6.txt) --nodeps
# yum update //you will get latest package of rhel 7
# reboot
# cat /etc/redhat-release
# yum repolist
//if facing any issue on repolist, need to unsubscribe or clean or resubscription would solve the issue.
# subscription-manager remove --all
# subscription-manager clean
# subscription-manager refresh
# subscription-manager unregister
# subscription-manager register