Znuny – Planning and managing system maintenance

System maintenance is a central component of any IT administration. Some maintenance tasks require a temporary suspension of live operations. In these cases, it is particularly important to inform users in good time and to keep the system accessible only to administrators. With the System maintenance module in the Admin interface, Znuny provides a clear interface for creating and adjusting maintenance windows and warning users via login notices or in-app notifications.

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Adding new system maintenance

1. Click on Add new system maintenance.
2. Fill in Start date, End date, and Comment (description).
3. Optionally activate the Login message and/or Notification message.
4. Save with Save.

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Editing existing system maintenance

1. Select the entry in the maintenance overview.
2. Adjust the start/end date, message, or validity status.
3. Click on Save.

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Deleting system maintenance

1. Click on the trash icon next to the desired entry.
2. Confirm with Confirm.

Note: Use the filter field to quickly find maintenance tasks by name.

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Important settings

• Start date / End date
• Comment * (displayed in the list)
• Show login message (login screen)
• Notification message (in-app notice before maintenance)
• Validity * (active / inactive)

Tip

You can define the default texts for login and in-app messages in the System configuration:

• SystemMaintenance::IsActiveDefaultLoginMessage
• SystemMaintenance::IsActiveDefaultNotification
  You can control the timing of the in-app warning before maintenance begins with
  SystemMaintenance::TimeNotifyUpcomingMaintenance (minutes before start).

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Session management

In addition to scheduled maintenance, it is often necessary to monitor active user sessions and terminate them if required. In the Session management module, you can see all currently logged-in users:

• Terminate individual sessions: Click on Terminate this session
• Terminate all except your own session: Click on Terminate all sessions except your own

These functions help to quickly clean up the system after maintenance or in the event of security incidents.

Conclusion

With the System maintenance module and Session management, Znuny provides administration tools to:

1. Announce maintenance windows transparently
2. Inform users proactively
3. Restrict access during the maintenance window
4. Securely manage active sessions at any time
   This ensures smooth system maintenance while maintaining user satisfaction.

Frequently asked questions

How do I schedule a Znuny system maintenance window?

In the Admin interface, open System maintenance, click Add new system maintenance, set start/end dates and comment, optionally enable login or notification messages, then Save.

Can Znuny warn users before maintenance starts?

Yes. Enable the login message and/or notification message on the maintenance entry; timing of the in-app warning is controlled by SystemMaintenance::TimeNotifyUpcomingMaintenance.

What is Session management used for during maintenance?

Session management lists logged-in users so you can terminate individual sessions or all sessions except your own after maintenance or security incidents.