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Upgrade ServiceControl from Version 4 to Version 5

Component: ServiceControl

Upgrading ServiceControl from version 4 to version 5 is a major upgrade and requires careful planning. Throughout the upgrade process, the instance of ServiceControl will be offline and will not ingest messages

Breaking changes

  • ServiceControl now uses a new data format for data storage which is not compatible with previous versions.

  • The Error Instance will no longer process saga audit data. If some endpoints are still configured to send saga audit data to the error instance instead of the audit instance, the error instance will attempt to forward the messages to the audit instance and display a custom check warning until the misconfigured endpoints are corrected.

  • ServiceControl Management is no longer distributed as an installable package. Starting with version 5.0.0, ServiceControl Management is now distributed as a portable application that is used to create, update, and delete ServiceControl instances. This allows using different versions of ServiceControl Management side-by-side, without the need to uninstall or reinstall different versions.

  • The ServiceControl PowerShell module is no longer installed with ServiceControl. Instead, the PowerShell module can be installed from the PowerShell Gallery.

  • The ServiceControl PowerShell module requires PowerShell 7.2 or greater to run.

  • PowerShell: The Transport parameter no longer accepts the DisplayName descriptions but only the Name code. See PowerShell Transport argument

  • ServiceControl instances using Azure Service Bus - Endpoint-oriented topology (Legacy) as the message transport cannot be upgraded to ServiceControl version 5. Systems using this deprecated configuration must first use the upgrade steps documented in Azure Service Bus Transport (Legacy) Upgrade Version 9 to 9.1. After this process is complete, a ServiceControl 4.x instance can be switched to the supported Azure Service Bus transport, and then an upgrade to ServiceControl 5 can occur.

  • !disable is no longer supported as an error and/or audit queue names. Instead, dedicated settings i.e. ServiceControl/IngestErrorMessages and ServiceControl/IngestAuditMessages should be used to control the message ingestion process. These settings are useful for upgrade scenarios, such as the one that will be described later in this article.

  • The setting IndexStoragePath is no longer supported. Use symbolic links (soft links) to map any storage subfolder to other physical drives.

  • The ServiceControl.Audit/RavenDBLogLevel and ServiceControl/RavenDBLogLevel settings use new values. The previous values are mapped to new values native to RavenDB5.

New data format

Version 4.26 of ServiceControl introduced a new persistence format for audit instances. Version 5 of ServiceControl uses the new persistence format for all instance types.

As a result, not all ServiceControl instances can be automatically upgraded from Version 4 to Version 5, including the data. An automatic upgrade process is available for:

  • Primary instances but the process does not include data migration i.e. all the data stored are deleted in the process. The manual migration process describes how to migrate the data.
  • Audit instances that use RavenDB 5 storage engine (instances created with version 4.26 or later).
  • All Monitoring instances.

PowerShell Transport argument

The value passed for the -Transport argument has changed in ServiceControl version 5. This value must now be a code which is shorter in length and does not have spaces.

To find the information for the transports supported by any particular release of the PowerShell plugin, use the cmdlet Get-ServiceControlTransportTypes.

Planning

Time for upgrade

This upgrade does not contain any data migrations, the size of the database does not have any impact on the time to perform the upgrade.

Editing older instances

ServiceControl Management Utility version 5 cannot be used to edit ServiceControl instances until they have been upgraded to version 4. These instances can still be started, stopped, put into maintenance mode, and removed using ServiceControl Management.

ServiceControl Management version 4.33.0 can be used to continue managing older instances. Version 4.33.0, which is still installed, can be used side-by-side with ServiceControl 5.

Disk space requirements

ServiceControl instances that use RavenDB 5 must use a completely different database than the older RavenDB 3.5 counterparts:

  • Adding a new Audit instance will have a new database, which will likely grow in size to the same or slightly larger than the previous Audit instance, given similar message volumes and retention settings.
  • Upgrading an Error instance will set aside the old database by renaming the directory. When following the upgrade procedure above, it should be safe to delete the old database after all failed messages are dealt with, but the database directory is renamed instead as an extra precaution.

To create a cautious estimate, total the size of any existing RavenDB 3.5 databases and assume that 20% more space than that will be required during the migration process.

The old audit instance database can be removed after the retention period has lapsed, and the old error instance database can be removed once confident of a successful upgrade, meaning ultimately the remaining databases will be roughly the same size or slightly larger than their previous RavenDB 3.5 counterparts.

Upgrading to Version 5

Follow this procedure to upgrade all necessary ServiceControl 4 instances to version 5.

This procedure should first be run in a test environment.

Getting ready

These steps should be followed whether updating using ServiceControl Management or via PowerShell:

  1. Upgrade all ServiceControl instances to 4.33.0 or later. This is required to support the upgrade path that keeps all failed messages safe.
  2. To preserve audit data, install a new Audit instance that uses RavenDB 5 persistence as described in zero-downtime upgrades, if this has not already been done.
  3. In ServicePulse, clean up all failed messages. It's acceptable if a few failed messages still come in, but ideally, all failed messages should either be retried or archived.
  4. Disable error message ingestion:
    • Stop the ServiceControl instance.
    • Open the ServiceControl.exe.config file.
    • Add an appSetting value: <add key="ServiceControl/IngestErrorMessages" value="false" />
    • Restart the ServiceControl instance. ServiceControl will be able to manage failed messages that have come in before the ingestion was disabled, but will not ingest any new error messages.
  5. In ServicePulse, retry or archive any failed messages that have arrived during the upgrade process.
    • If a retried message fails again, it will go to the error queue, but the instance will not ingest it.
    • Once the failed message list is "clean" there will be no data of any value left in the database, making it safe to upgrade.
If data migration is not required for existing error messages, for example on developer workstations, the forced upgrade procedure can be used on instances with version 4.26.0 or later. This is the minimum version that can be upgraded to ServiceControl 5.

Upgrading using ServiceControl Management

Follow this procedure to upgrade using the ServiceControl Management Utility:

  1. Ensure the getting ready steps above have been completed.
  2. Using ServiceControl Management version 5, perform a forced upgrade on the Error instance:
    • Click the wrench 🔧 icon to access to the Error instance's Advanced Options screen.
    • Under Force Upgrade to Version 5, click the Upgrade Instance button and follow the prompts.
    • Note: This is a destructive operation. A database backup is made but will require application re-installation of the instance to recover.
  3. Re-enable error message ingestion by removing the IngestErrorMessages setting from the ServiceControl.exe.config file.
  4. Restart the primary instance for the configuration change to take effect.
  5. Upgrade any Audit instances that do not use RavenDB 3.5 persistence to ServiceControl 5.
  6. Upgrade any Monitoring instances to ServiceControl 5.
  7. Remove the old database for the Error instance:
    • In ServiceControl Management, click the Browse… button under DB Path.
    • In Windows Explorer, move up one directory level.
    • The old database will be located in this directory with a suffix. For example, if the database directory name was DB, the previous database directory will be named DB_UpgradeBackup. This database directory can be deleted to save disk space once confident that the upgrade process has been a success.

Upgrading with PowerShell

After completing the , follow this procedure to upgrade using PowerShell 7.2 or higher.

  1. Install the Particular.ServiceControl.Management module, replacing 5.0.0 with a newer 5.x version if available:
    Install-Module -Name Particular.ServiceControl.Management -RequiredVersion 5.0.0
    
    Import-Module Particular.ServiceControl.Management -RequiredVersion 5.0.0
    
  2. Ensure the getting ready steps above have been completed. The following query can be used to list all instances and their current versions:
    Get-ServiceControlInstances | Select Name, Version
    Get-ServiceControlAuditInstances | Select Name, Version
    Get-MonitoringInstances | Select Name, Version
    
  3. Perform a Forced upgrade for the version 4 ServiceControl instance. Note: This is a destructive operation. A database backup is made but will require application re-installation of the instance to recover.
    # List existing error/primary instances
    Get-ServiceControlInstances | Select Name, Version
    # For each instance
    Invoke-ServiceControlInstanceUpgrade -Name <InstanceName> -Force
    
  4. Re-enable error message ingestion by removing the IngestErrorMessages setting from the ServiceControl.exe.config file.
  5. Restart the primary instance for the configuration change to take effect.
  6. Upgrade any Audit instances that do not use RavenDB 3.5 persistence to ServiceControl 5.
    # List existing audit instances:
    Get-ServiceControlAuditInstances | ? PersistencePackageName -eq RavenDB | Select Name, PersistencePackageName
    # For each instance
    Invoke-ServiceControlAuditInstanceUpgrade -Name <InstanceName>
    
  7. Upgrade any Monitoring instances to ServiceControl 5.
    # Upgrade monitoring instances
    Get-MonitoringInstances | Select Name, Version
    # For each instance
    Invoke-MonitoringInstanceUpgrade <InstanceName>
    
  8. Remove the old database for the Error instance:
    • Find the current database path for the Error instance:
      Get-ServiceControlAuditInstances | Select Name, DBPath
      
    • The old database will have the same path as the curent DBPath but with a suffix _UpgradeBackup. For example, if the DBPath was D:\ServiceControl\DB, the previous database directory will be located at D:\ServiceControl\DB_UpgradeBackup. This database directory can be deleted to save disk space once confident that the upgrade process has been a success.

Force upgrading

In ServiceControl 5, it is also possible to perform a forced upgrade on instances that still uses RavenDB 3.5 persistence, which will discard all the data in the current database and start with a fresh RavenDB 5 database. This is sometimes preferable on non-production and developer systems where the audit data has little value, or in situations where the audit retention period is low and a decision is made that the value of the temporally-limited audit data is not worth the complexity of following the zero-downtime upgrades procedure.

Force upgrading instance requires upgrading version 4 instances to 4.26.0 or later.

Using ServiceControl Management

In these cases, the error or audit instance can be force-upgraded in ServiceControl Management:

  1. Click the wrench icon 🔧 to access the Advanced Options screen for the instance.
  2. Under Force Upgrade to Version 5, click the Upgrade Instance button and follow the prompts.

Using Powershell

To force upgrade an Audit instance in PowerShell:

# List existing audit instances NOT using RavenDB 5 storage engine:
Get-ServiceControlAuditInstances | ? PersistencePackageName -ne RavenDB | Select Name, PersistencePackageName
# For each instance
Invoke-ServiceControlAuditInstanceUpgrade -Name <InstanceName> -Force

To force upgrade an Error instance in Powershell

# List existing audit instances NOT using RavenDB 5 storage engine:
Get-ServiceControlInstances | ? PersistencePackageName -ne RavenDB | Select Name, PersistencePackageName
# For each instance
Invoke-ServiceControlInstanceUpgrade -Name <InstanceName> -Force

Support for version 4

Version 4 is supported for one year after version 5 is released as defined by the ServiceControl support policy. The ServiceControl support end-date is available at ServiceControl supported versions.


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