SCOM deployment configuration for SQL Always On

When you deploy SCOM into a SQL Always On scenario, there are some post-installation procedures that must be configured.

When you install SCOM, you will provide the SQL Always On Availability Group Listener (name,port) during setup. That will install the SCOM databases on whichever node is Primary at that time.

Or, perhaps you migrated an existing SCOM database to an Always On SQL instance as part of a version migration.

You still need to configure the SCOM database as FULL Recovery model, back it up, then add it to the availability group as a database Replica.

After that, there are several items to fix or check:

Create the logins on replica nodes

You will need to add the logins on the secondary nodes.

For the OperationsManger Database, you will need to add logins for:

Management Server Action Account
System Center Data Access Account
Data Warehouse Write Account
Computer accounts for any Web Console Servers

For the OperationsMangerDW Database, you will need to add logins for:

System Center Data Access Account
Data Warehouse Read Account
Data Warehouse Write Account
Computer accounts for any Web Console Servers

When you fail the Availability Group over to the second node – the permissions assigned to these accounts should be inherited, because the database is now running on the second node. You can spot check the permissions and compare to: SCOM 2022 Security Account Matrix

Enable CLR on replica nodes

As soon as you perform a failover to the second node, other changes need to be made.

CLR does not get enabled for the OperationsManager Database SQL Instance on the replica nodes by default, yet we do require this. You might see errors in your event log such as:

Log Name:      Operations Manager
Source:        DataAccessLayer
Event ID:      33333
Level:         Warning
Description: Data Access Layer rejected retry on SqlError:
Message: Execution of user code in the .NET Framework is disabled. Enable “clr enabled” configuration option.

To check the CLR setting, run this SQL query: (0=disabled, 1=enabled)

SELECT name,value
FROM sys.configurations 
WHERE name = 'clr enabled'

To enable CLR:

EXEC sp_configure 'clr enabled', 1;  
RECONFIGURE;  
GO

This is documented here: Enabling CLR Integration – SQL Server | Microsoft Learn

Enable trusted binaries for CLR

Next, we need to enable some binaries to be trusted for use by CLR, on the OperationsManager Database SQL Instance, on the second node.

-- Do this only for SQL server version 2017 and more
IF( convert(int, SERVERPROPERTY('ProductMajorVersion')) > 13 )
BEGIN
DECLARE @Hash1 BINARY(64), @ClrName1 NVARCHAR(4000);
set @Hash1 = HASHBYTES(N'SHA2_512', 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set        @ClrName1 = CONVERT(NVARCHAR(4000), 'Microsoft.EnterpriseManagement.Sql.DataAccessLayer');        

-- Drop trusted assembly if exists
IF EXISTS (select * from sys.trusted_assemblies where description = @ClrName1)
BEGIN
EXEC SYS.sp_drop_trusted_assembly @Hash1
END        

--Add to trusted assembly
EXEC SYS.SP_ADD_TRUSTED_ASSEMBLY @Hash1, @ClrName1        
END
GO

-- Do this only for SQL server version 2017 and more
IF( convert(int, SERVERPROPERTY('ProductMajorVersion')) > 13 )
BEGIN
DECLARE @Hash BINARY(64), @ClrName NVARCHAR(4000);
set  @Hash = HASHBYTES(N'SHA2_512', 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set        @ClrName = CONVERT(NVARCHAR(4000), 'Microsoft.EnterpriseManagement.Sql.UserDefinedDataType');

-- Drop trusted assembly if exists
IF EXISTS (select * from sys.trusted_assemblies where description = @ClrName)
BEGIN
EXEC SYS.sp_drop_trusted_assembly @Hash
END        

--Add to trusted assembly
EXEC SYS.SP_ADD_TRUSTED_ASSEMBLY @Hash, @ClrName        
END
GO

This is documented here: Upgrade Operations Manager databases to SQL Server 2019 | Microsoft Learn

Add SCOM specific SysMessages to the SQL instance.

I wrote about this previously here: SCOM 2016, 2019 and 2022: Event 18054 errors in the SQL application log – Kevin Holman’s Blog

When you move a SCOM database to a new server, or you install into an Always On SQL cluster, the replica (or passive) nodes will not get this configuration by default.

In SCOM 2022 – you need to run the SQL scripts for the SQL instances hosting the OperationsManager and OperationsManagerDW databases.

Simply open SQL management studio, connect to the SQL instance, open the file (or paste it into a new query window) and run it. There is one file for the Ops DB and one file for the DW DB.

Check Is Broker Enabled

Anytime you move or restore SCOM databases, you should verify that SQL Broker is enabled for the OperationsManager database.

SELECT is_broker_enabled FROM sys.databases WHERE name='OperationsManager'

Add/Verify the AA and DAS accounts have access to MSDB for Scheduled Maintenance Mode

When you install SCOM, this permission is provisioned automatically on a Stand Alone or Primary node in Always On. However, it is not provisioned on the secondary replicas.

You need to configure this for any SQL server instance hosting an OperationsManager database.

Open SQL management Studio > Security > Logins

Open the properties for the MSAA and DAS accounts, and ensure they have a user mapping to the MSDB database, with the following roles checked:

public
SQLAgentOperatorRole
SQLAgentReaderRole
SQLAgentUserRole

2 Comments

Kamil
October 22, 2022 at 7:02 am

Hi Kevin,thanks for article. Good point in last paragraph.
stephen morrison
October 25, 2022 at 2:09 pm

Suggest also making sure that Full Text Search is installed. We recently migrated from a SQL instance to another Instance due to life cycle management. No signs there was an issue but upgrading from 2019 to 2022 the installer had a fatal stop.

I have asked MS to add this check to the migration documentation as well.

SCOM deployment configuration for SQL Always On

2 Comments

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