Oracle Linux 6.10 update to Oracle Linux 7.6 Preupg result!


New Member
Jan 13, 2023
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I want OL 6.10 update to OL 7.6. The result of the command gave the following information, will I have a problem if I install it?

The '/root/preupgrade/dirtyconf/etc/rsyslog.conf' file already exists in the dirtyconf directory
The '/root/preupgrade/cleanconf/etc/ssh/sshd_config' configuration file already exists in the '/root/preupgrade/cleanconf/etc/ssh' directory
The '/root/preupgrade/dirtyconf/etc/sysconfig/rhn/up2date' file already exists in the dirtyconf directory
Result table with checks and their results for 'main contents':
|Bacula Backup Software                                                                        |notapplicable     |
|PostgreSQL                                                                                    |notapplicable     |
|Oracle Directory Server                                                                       |notapplicable     |
|Arptables                                                                                     |notapplicable     |
|BIND9 in a chroot environment                                                                 |notapplicable     |
|BIND9 configuration compatibility                                                             |notapplicable     |
|Moving the 'dhcpd' and 'dhcrelay' arguments                                                   |notapplicable     |
|Dovecot                                                                                       |notapplicable     |
|OpenLDAP server daemon configuration                                                          |notapplicable     |
|SMB                                                                                           |notapplicable     |
|Sendmail                                                                                      |notapplicable     |
|Squid                                                                                         |notapplicable     |
|VSFTP daemon configuration                                                                    |notapplicable     |
|Added and extended options for BIND9                                                          |notapplicable     |
|Load balancer support                                                                         |notapplicable     |
|w3m browser                                                                                   |notapplicable     |
|The qemu-guest-agent package                                                                  |notapplicable     |
|TaskJuggler                                                                                   |notapplicable     |
|Custom SELinux configuration                                                                  |notapplicable     |
|Samba SELinux context check                                                                   |notapplicable     |
|FreeRADIUS                                                                                    |notapplicable     |
|The bind-dyndb-ldap configuration file                                                        |notapplicable     |
|Identity Management Server                                                                    |notapplicable     |
|IPA Server CA                                                                                 |notapplicable     |
|OpenLDAP /etc/sysconfig and data compatibility                                                |notapplicable     |
|System Security Services Daemon                                                               |notapplicable     |
|Tomcat configuration compatibility check                                                      |notapplicable     |
|Detection of Direct Access Storage Device (DASD) format on s390x platform for LDL format      |notapplicable     |
|The clvmd and cmirrord daemon management                                                      |notapplicable     |
|Device Mapper Multipath                                                                       |notapplicable     |
|The scsi-target-utils packages                                                                |notapplicable     |
|The quorum implementation                                                                     |notapplicable     |
|The krb5kdc configuration file                                                                |notapplicable     |
|AIDE                                                                                          |notapplicable     |
|java-1.8.0-ibm compatibility check                                                            |notapplicable     |
|The kernel-kdump package                                                                      |notapplicable     |
|PHP modules not distributed by Oracle                                                         |notapplicable     |
|Ruby 2.0.0                                                                                    |notapplicable     |
|Oracle Network Classic unsupported                                                            |notapplicable     |
|Oracle Subscription Manager                                                                   |notapplicable     |
|The 'tuned' profiles                                                                          |notapplicable     |
|Yaboot                                                                                        |notapplicable     |
|NIS ypbind                                                                                    |notapplicable     |
|NIS Makefile                                                                                  |notapplicable     |
|NIS server maps                                                                               |notapplicable     |
|NIS server UID_MIN and GID_MIN limits                                                         |notapplicable     |
|The NIS server configuration file                                                             |notapplicable     |
|MySQL data stack                                                                              |pass              |
|POWER6 processors                                                                             |pass              |
|Input drivers not supported in Oracle Linux 7                                                 |pass              |
|Kernel networking drivers not available in Oracle Linux 7                                     |pass              |
|Kernel storage drivers not available in Oracle Linux 7                                        |pass              |
|Dnsmasq                                                                                       |pass              |
|Net-SNMP                                                                                      |pass              |
|Reusable configuration files                                                                  |pass              |
|                                                                              |pass              |
|The OpenSSH sshd_config file migration                                                        |pass              |
|The quota_nld service                                                                         |pass              |
|Moving the disk quota netlink message daemon into the quota-nld package                       |pass              |
|Detection of LUKS devices using Whirlpool for password hash                                   |pass              |
|Backing up warnquota                                                                          |pass              |
|Add-Ons                                                                                       |pass              |
|Unsupported architectures                                                                     |pass              |
|Debuginfo packages                                                                            |pass              |
|Read-only FHS directories                                                                     |pass              |
|Requirements for the /usr/ directory                                                          |pass              |
|Cluster and High Availability                                                                 |pass              |
|CGROUP_DAEMON in sysconfig scripts                                                            |pass              |
|Checking the system version and variant                                                       |pass              |
|CA bundles                                                                                    |pass              |
|Oracle Developer Toolset                                                                      |pass              |
|Obsoleting Hardware Abstraction Layer                                                         |pass              |
|Hyper-V                                                                                       |pass              |
|Ethernet interface naming                                                                     |pass              |
|The /etc/rc.local and /etc/rc.d/rc.local files                                                |pass              |
|Pluggable authentication modules (PAM)                                                        |pass              |
|System requirements                                                                           |pass              |
|Oracle Software Collections (RHSCL)                                                           |pass              |
|Copying Kickstart                                                                             |pass              |
|The libuser.conf file                                                                         |pass              |
|MySQL configuration                                                                           |informational     |
|Changes related to moving from MySQL to MariaDB                                               |informational     |
|NFSv2                                                                                         |informational     |
|Postfix                                                                                       |informational     |
|VCS repositories                                                                              |informational     |
|Added options in dnsmasq                                                                      |informational     |
|The coreutils packages                                                                        |informational     |
|The gawk package                                                                              |informational     |
|Removed command line options                                                                  |informational     |
|The netstat binary                                                                            |informational     |
|Quota                                                                                         |informational     |
|The util-linux (util-linux-ng) binaries                                                       |informational     |
|GMP library incompatibilities                                                                 |informational     |
|CVS                                                                                           |informational     |
|httpd                                                                                         |informational     |
|Network Time Protocol                                                                         |informational     |
|The warnquota tool                                                                            |informational     |
|FHS incompatibilities                                                                         |informational     |
|File systems, partitions, and the mounts configuration                                        |informational     |
|Removable media in the /etc/fstab file                                                        |informational     |
|Libraries with their soname kept                                                              |informational     |
|Consequences of upgrading to RHEL 7.6 instead of the latest RHEL minor version                |informational     |
|Perl modules not distributed by Oracle                                                        |informational     |
|PolicyKit                                                                                     |informational     |
|UEFI boot loader                                                                              |informational     |
|The yum configuration file                                                                    |informational     |
|SSH configuration file and SSH keys                                                           |fixed             |
|Package downgrades                                                                            |fixed             |
|Custom SELinux policy                                                                         |fixed             |
|CUPS Browsing and BrowsePoll                                                                  |fixed             |
|The OpenSSH sysconfig/sshd file migration                                                     |fixed             |
|Logical Volume Management 2 services                                                          |fixed             |
|Grubby                                                                                        |fixed             |
|Dangerous ranges of UIDs and GIDs                                                             |fixed             |
|File lists for the manual migration                                                           |needs_inspection  |
|Graphic drivers not supported in Oracle Linux 7                                               |needs_inspection  |
|Compatibility between iptables and ip6tables                                                  |needs_inspection  |
|Moving openssh-keycat                                                                         |needs_inspection  |
|Changed configuration files                                                                   |needs_inspection  |
|Rsyslog configuration incompatibility                                                         |needs_inspection  |
|Changes in utilities                                                                          |needs_inspection  |
|Obsolete RPM packages                                                                         |needs_inspection  |
|Binaries to be rebuilt                                                                        |needs_inspection  |
|Libraries with their soname bumped                                                            |needs_inspection  |
|Removed .so libraries                                                                         |needs_inspection  |
|Python packages                                                                               |needs_inspection  |
|Repositories for Kickstart                                                                    |needs_inspection  |
|Incorrect usage of reserved UIDs and GIDs                                                     |needs_inspection  |
|Configuration files to be reviewed                                                            |needs_action      |
|Packages from other system variants                                                           |needs_action      |
|Packages not signed by Oracle                                                                 |needs_action      |
|Removed RPM packages                                                                          |needs_action      |
|Replaced RPM packages                                                                         |needs_action      |
|"not-base" channels                                                                           |needs_action      |
|Removing sandbox from SELinux                                                                 |needs_action      |
|GRUB to GRUB 2 migration                                                                      |needs_action      |
|Enabled and disabled services in Oracle Linux 6                                               |needs_action      |
|Java upgrade                                                                                  |needs_action      |
|The cgroups configuration compatibility                                                       |needs_action      |
|GNOME desktop environment                                                                     |fail              |
|KDE desktop environment                                                                       |fail              |
The tarball with results is stored in '/root/preupgrade-results/preupg_results-230330095957.tar.gz' .
The latest assessment is stored in the '/root/preupgrade' directory.
Summary information:
We have found some critical issues. In-place upgrade or migration is not advised.
Read the file /root/preupgrade/result.html for more details.
Please ensure you have backed up your system and/or data
before doing a system upgrade to prevent loss of data in
case the upgrade fails and full re-install of the system
from installation media is needed.
Upload results to UI by the command:
e.g. preupg -u -r /root/preupgrade-results/preupg_results-230330095957.tar.gz .


Gold Member
Gold Supporter
Dec 11, 2019
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Contact Oracle support and ask them? As a side note, I wouldn't want to do an in place upgrade from 6 to 7 because 6 still uses systemV and 7 Systemd.


Gold Member
Gold Supporter
Dec 11, 2019
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Yeah, best to fresh install when jumping major versions.
Going from 7 to 8 and from 8 to 9 with an in place upgrade is fine now days, I have done quite a few successful upgrades using leapp going from 7 to 8. However when going from 6 to 7 you are going from one init system to another init system so more likely things to break then.


Super Moderator
Staff member
Gold Supporter
Jul 23, 2020
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Yeah, best to fresh install when jumping major versions.

To add to f33dm3's response, I do in-place upgrades fairly often and haven't had any major distro fail at it in a while. If there are drastic changes, then I'll do a new installation.

The last time I did that was when Lubuntu moved from 18.04 to 20.04 - which involved a completely new desktop (and a bunch else behind the scenes) which was LXDE to LXQt.
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