Before You Begin
This tutorial shows you how to set up the systemd service
manager on an Oracle Linux 8 system to ensure that services and processes
that are started by a user continue after the user's session has
ended.
Background
Systemd is a software suite that is designed to replace the
init system that is used to bootstrap userspace and
manage user processes on Linux systems. Systemd is more robust and can replace existing daemons and utilities for user
management, login sessions, and networking.
By default, services and processes that are started and owned by a user are terminated when that user's login session ends. The loginctl command can be used to change this default behavior.
What Do You Need?
- Any system with Oracle Linux 8 installed
Enable processes to continue by using the loginctl utility
Use the loginctl utility to change the default behavior for the users that you specify, for example:
$ sudo loginctl enable-linger user
To verify that the setting has been applied, check for a file with the same name as the
user in the /var/lib/systemd/linger directory.
Enable processes to continue for specified users by using the logind.conf file
Edit the /etc/systemd/logind.conf
file by entering a space-separated list of users for the
KillExcludeUsers parameter. The configuration ensures that user-owned services and processes continue for these users, for example:
KillExcludeUsers=user1 user2 user3
Enable processes to continue for all users by using the logind.conf
file
Open the /etc/systemd/logind.conf file for editing and
uncomment the KillUserProcesses setting as follows:
KillUserProcesses=no
To reinstate the previous behavior, modify the KillOnlyUsers setting by
specifying a space-separated list of the selected users, for
example:
KillOnlyUsers=user1 user2 user3
Want to Learn More?
- Systemd documentation: https://systemd.io/
logind.conf(5)manual page, also at https://www.freedesktop.org/software/systemd/man/logind.conf.html- Oracle Linux Documentation
Oracle Linux: Configure Systemd to Enable User Processes to Continue to Run After Logout
F29114_04
October 2020
Copyright © 2020, Oracle and/or its affiliates.
This tutorial provides instructions to configure Systemd services to keep running after users log out on Oracle Linux 8.
This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited.
The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing.
If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable:
U.S. GOVERNMENT END USERS: Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs) and Oracle computer documentation or other Oracle data delivered to or accessed by U.S. Government end users are "commercial computer software" or "commercial computer software documentation" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, reproduction, duplication, release, display, disclosure, modification, preparation of derivative works, and/or adaptation of i) Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs), ii) Oracle computer documentation and/or iii) other Oracle data, is subject to the rights and limitations specified in the license contained in the applicable contract. The terms governing the U.S. Government's use of Oracle cloud services are defined by the applicable contract for such services. No other rights are granted to the U.S. Government.
This software or hardware is developed for general use in a variety of information management applications. It is not developed or intended for use in any inherently dangerous applications, including applications that may create a risk of personal injury. If you use this software or hardware in dangerous applications, then you shall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure its safe use. Oracle Corporation and its affiliates disclaim any liability for any damages caused by use of this software or hardware in dangerous applications.
Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.
Intel and Intel Inside are trademarks or registered trademarks of Intel Corporation. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. AMD, Epyc, and the AMD logo are trademarks or registered trademarks of Advanced Micro Devices. UNIX is a registered trademark of The Open Group.
This software or hardware and documentation may provide access to or information about content, products, and services from third parties. Oracle Corporation and its affiliates are not responsible for and expressly disclaim all warranties of any kind with respect to third-party content, products, and services unless otherwise set forth in an applicable agreement between you and Oracle. Oracle Corporation and its affiliates will not be responsible for any loss, costs, or damages incurred due to your access to or use of third-party content, products, or services, except as set forth in an applicable agreement between you and Oracle.