Solution Based on Experience from the Field
This article provides a solution that has not been approved by the IGEL Research and Development department. Therefore, official support cannot be provided by IGEL. Where applicable, test the solution before deploying it to a productive environment.
Distributed UMS vs. UMS High Availability (HA)
If you want to install the UMS with multiple servers, IGEL recommends to use the Distributed UMS feature:
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for new installations
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for existing single-instance installations. For more details, see IGEL UMS Installation.
If you have an existing fully functional HA installation, you can leave everything as it is. Note, however, that no new features will be added for the UMS HA.
If you want to migrate, see How to Migrate a UMS High Availability Installation to a Distributed UMS.
Symptom
After testing externally signed CA, if switch back to the internal one, an error message will come up:
Environment
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UMS HA; UMS version: any
Solution
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Run the installer again.
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Choose Repair.
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Point to the HA 'token' / certificate and install it that way.