AlwaysOn Availability Group Job Management
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Job Management in an AlwaysOn World How to handle jobs that need to run on the primary replica.
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Transcript of AlwaysOn Availability Group Job Management
Job Management in an AlwaysOn WorldHow to handle jobs that need to run on the primary replica.
About Me…• Database Administrator at Boulder County
• Twitter: @_KenWilson
• Blog: SQLBama.com
• LinkedIn: https://www.linkedin.com/in/sqlbama
Ken Wilson
Agenda• Types of Jobs
• Job Failover Options
Job Types• Active X• Command Line• PowerShell
OS
• Command Jobs• Query JobsAnalysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
So What Are My Options• Add a job step
• Add a job server
• Move logic out of SQL Agent
• Use Alerts to enable/disable jobs
Adding a Job Step• Add top level job step.
• Use logic to detect primary
• Continue Processing
• Exit Gracefully
• Possible Issues Detection could be tricky
In 2012 you need to come up with the logic yourself
In 2014 and newer you can use the system function sys.fn_hadr_is_primary_replica
Misleading Error Log
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Add Job Server• Build a separate SQL Server
• Configure Job Server for Multi-Server Administration
• Point Jobs at target servers
• Possible Issues Initial Setup Cost
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Moving Logic• Move primary detection logic out of the
SQL Agent Job Works well with T-SQL Statements and
OS job types Examples: Ola Hallengren’s Maintenance
Solution and MidnightDBA’s Minion Backup Solution
• Possible Issues Need access to code Replication job types may be difficult to
setup.
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Using Alerts• Setup Alert on 1480 (AlwaysOn Role
Change)
• Setup Job to enable/disable other jobs
• Use the response of the alert to execute the disable/enable job.
• Possible Issues Initial Setup a little more involved False positives are possible
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
To Recap…• No one right way to manage jobs
• Document, Document, Document
References• Michael Campbell’s Blog Series
http://sqlmag.com/blog/alwayson-availability-groups-and-sql-server-jobs-part-1-introduction
• SQL Agent Job Types https://msdn.microsoft.com/en-US/librAry/ms187056.aspx
• Minion Backup http://minionware.net/backup/
• Ola Halengren https://ola.hallengren.com/
Questions?
