I have problem with update centos 6.8 to 7
I use how-to - https://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool
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# cat /etc/redhat-release
CentOS release 6.8 (Final)
When I make last command
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#centos-upgrade-tool-cli --network 7 --instrepo=http://mirror.centos.org/centos/7/os/x86_64/ --cleanup-post
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# centos-upgrade-tool-cli --network 7 --instrepo=http://mirror.centos.org/centos/7/os/x86_64/ --cleanup-post
setting up repos...
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/
removing mirrorlist with no valid mirrors: /var/tmp/system-upgrade/base/mirrorlist.txt
cmdline-instrepo | 3.6 kB 00:00
cmdline-instrepo/primary_db | 5.6 MB 00:01
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/
removing mirrorlist with no valid mirrors: /var/tmp/system-upgrade/extras/mirrorlist.txt
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/
removing mirrorlist with no valid mirrors: /var/tmp/system-upgrade/updates/mirrorlist.txt
upg | 1.9 kB 00:00
upg/primary_db | 14 kB 00:00
webtatic | 3.6 kB 00:00
webtatic/primary_db | 298 kB 00:00
No upgrade available for the following repos: base extras updates
.treeinfo | 366 B 00:00
Preupgrade assistant risk check found risks for this upgrade.
You can run preupg --riskcheck --verbose to view these risks.
Addressing high risk issues is required before the in-place upgrade
and ignoring these risks may result in a broken upgrade and unsupported upgrade.
Please backup your data.
Continue with the upgrade [Y/N]? Y
getting boot images...
Downloading failed: invalid data in .treeinfo: No section: 'checksums'
Thanks.