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Chapter 62. Servers and Services

No clear indication of profile activation error in the Tuned service

Errors in the Tuned service configuration or errors occurring when loading Tuned profiles are in some cases not shown in the output of the systemctl status tuned command. As a consequence, if errors occur that prevent Tuned from loading, Tuned sometimes enters a state with no profile activated. To view possible error messages, consult the output of the tuned-adm active command and check the contents of the /var/log/tuned/tuned.log file. (BZ#1385838)

db_hotbackup -c should be used with caution

The db_hotbackup command with the -c option must be run by the user that owns the database. If the user is different and the log file reaches its maximal size, a new log file is created with an ownership of the user that ran the command, which consequently makes the database unusable for its owner. This note has been added to the db_hotbackup(1) manual page. (BZ#1460077)

Setting ListenStream= options in rpcbind.socket causes systemd-logind to fail and SSH connections to be delayed

Setting the ListenStream= options in the rpcbind.socket unit file currently causes a failure of the systemd-logind service and a delay in SSH connections that import system users from a NIS database. To work around the problem, remove lines with the ListenStream= option from rpcbind.socket. (BZ#1425758)

ReaR recovery process fails on non-UEFI systems with the grub2-efi-x64 package installed

Installing the grub2-efi-x64 package, which contains the GRUB2 boot loader for UEFI systems, changes the file /boot/grub2/grubenv into a dead absolute symlink on systems which do not use UEFI firmware. When attempting to recover such a system using the ReaR (Relax and Recover) recovery tool, the process fails and the system is rendered unbootable. To work around this problem, do not install the grub2-efi-x64 package on systems where it is not required (systems without UEFI firmware). (BZ#1498748)

ISO images generated by ReaR with Linux TSM fail to work

The password store has changed in the Linux TSM (Tivoli Storage Manager) client versions 8.1.2 and above. This means ISO images generated by ReaR using TSM will not work, as the TSM node password and encryption key will not be included in the ISO file. To fix this problem, add the following line into the /etc/rear/local.conf or /etc/rear/site.conf configuration file: 
COPY_AS_IS_TSM=( /etc/adsm /opt/tivoli/tsm/client /usr/local/ibm/gsk8* )
(BZ#1534646)

Unexpected problems with the dbus rebase

The dbus package rebase with its configuration changes can cause unexpected problems. Thus, it is recommended to avoid the following actions:
  • updating only the dbus service
  • updating only parts of the system
  • updating from a graphical session
On the contrary, it is recommended to reboot after executing the yum update command as updating several major components including dbus without reboot rarely works as expected. (BZ#1550582)
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