USE [master]
GO

-- Create login for SQL service account
CREATE LOGIN [CVSDEMO\sqlsvc] FROM WINDOWS
  WITH DEFAULT_DATABASE=[master], DEFAULT_LANGUAGE=[us_english]
GO

-- Add to sysadmin role
ALTER SERVER ROLE [sysadmin] ADD MEMBER [CVSDEMO\sqlsvc]
GO

-- Create user in master and assign role
USE [master]
GO
CREATE USER [CVSDEMO\sqlsvc] FOR LOGIN [CVSDEMO\sqlsvc]
GO
ALTER ROLE [db_owner] ADD MEMBER [CVSDEMO\sqlsvc]
GO

-- Repeat for model, msdb, and tempdb databases
USE [model]
GO
CREATE USER [CVSDEMO\sqlsvc] FOR LOGIN [CVSDEMO\sqlsvc]
GO
ALTER ROLE [db_owner] ADD MEMBER [CVSDEMO\sqlsvc]
GO

USE [msdb]
GO
CREATE USER [CVSDEMO\sqlsvc] FOR LOGIN [CVSDEMO\sqlsvc]
GO
ALTER ROLE [db_owner] ADD MEMBER [CVSDEMO\sqlsvc]
GO

USE [tempdb]
GO
CREATE USER [CVSDEMO\sqlsvc] FOR LOGIN [CVSDEMO\sqlsvc]
GO
ALTER ROLE [db_owner] ADD MEMBER [CVSDEMO\sqlsvc]
GO

USE [master]
GO

EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE',
  N'Software\Microsoft\MSSQLServer\MSSQLServer',
  N'BackupDirectory', REG_SZ, N'F:\MSSQL\Backup'
GO

EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE',
  N'Software\Microsoft\MSSQLServer\MSSQLServer',
  N'DefaultData', REG_SZ, N'D:\MSSQL\DATA'
GO

EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE',
  N'Software\Microsoft\MSSQLServer\MSSQLServer',
  N'DefaultLog', REG_SZ, N'E:\MSSQL\Log'
GO

ALTER DATABASE MyDB1 SET RECOVERY FULL;
GO

-- Full backup
BACKUP DATABASE MyDB1
TO DISK = 'F:\MSSQL\Backup\MyDB1_Full.bak'
WITH INIT, COMPRESSION;

-- Transaction log backup
BACKUP LOG MyDB1
TO DISK = 'F:\MSSQL\Backup\MyDB1_Log.trn'
WITH INIT, COMPRESSION;

-- Restore full backup
RESTORE DATABASE MyDB1
FROM DISK = 'F:\MSSQL\Backup\MyDB1_Full.bak'
WITH NORECOVERY;

-- Restore log backup
RESTORE LOG MyDB1
FROM DISK = 'F:\MSSQL\Backup\MyDB1_Log.trn'
WITH NORECOVERY;

-- Run on primary replica
CREATE AVAILABILITY GROUP sqlagwest1
WITH (AUTOMATED_BACKUP_PREFERENCE = SECONDARY)
FOR DATABASE MyDB1
REPLICA ON
  N'SQLNODE1' WITH (
    ENDPOINT_URL = N'TCP://sqlnode1.cvsdemo.internal:5022',
    AVAILABILITY_MODE = SYNCHRONOUS_COMMIT,
    FAILOVER_MODE = AUTOMATIC,
    SECONDARY_ROLE(ALLOW_CONNECTIONS = YES)
  ),
  N'SQLNODE2' WITH (
    ENDPOINT_URL = N'TCP://sqlnode2.cvsdemo.internal:5022',
    AVAILABILITY_MODE = SYNCHRONOUS_COMMIT,
    FAILOVER_MODE = AUTOMATIC,
    SECONDARY_ROLE(ALLOW_CONNECTIONS = YES)
  );
GO

SELECT ag.name AS AG_Name, ars.primary_replica
FROM sys.dm_hadr_availability_group_states AS ars
JOIN sys.availability_groups AS ag ON ag.group_id = ars.group_id;

-- Check replica configuration
SELECT replica_server_name, availability_mode_desc, failover_mode_desc
FROM sys.availability_replicas
WHERE group_id = (SELECT group_id FROM sys.availability_groups WHERE name = N'sqlagwest1');

ALTER AVAILABILITY GROUP sqlagwest1 FAILOVER;
GO

--
SELECT @@SERVERNAME AS NowPrimary;