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• Jobs and Job Chains can be executed by Agents. 
• Agents can be operated in a an Agent Cluster:
  
  • Fixed Priority Scheduling
    • JobScheduler Master selects the first available Agent from a cluster for job execution.
    • Should an Agent not be available then the next available Agent is used.

    • Jira
      server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key JS-1554

  • Round-Robin Scheduling
    • JobScheduler Master switches the Agent used for each job execution.
    • Should an Agent not be available then the next available Agent is used.

    • Jira
      server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key JS-1188

• Example configuration files are provided for downloading.

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order_1 [shape="ellipse",label="Order",fillcolor="violet"] 
process_class_1 [label="Fixed Priority Scheduling Process Class\nassigned to Job Chain",fillcolor="white"] 
agent_1 [label="Agent 1\nPrimary Agent",fillcolor="white"] 
agent_2 [label="Agent 2\nFallback Agent\nactive after failure of Agent 1",fillcolor="white"] 

job_chain_1 [label="Job Chain",fillcolor="orange"]
job_1 [label="Job 1\nexecuted on Agent 1", fillcolor="lightskyblue"]
job_2 [label="Job 2\nexecuted on Agent 2", fillcolor="lightskyblue"]
job_3 [label="Job 3\nexecuted on Agent 2", fillcolor="lightskyblue"]

order_1 -> job_chain_1
process_class_1 -> agent_1
process_class_1 -> agent_2
job_chain_1 -> job_1 -> job_2 -> job_3

agent_1 -> job_1
agent_2 -> job_2
agent_2 -> job_3

Description

• The job chain process class is assigned a Primary Agent and a default Agent.Fallback Agent

  • Code Block
    language xml title Process Class configuration for Fixed Priority Scheduling collapse true
    <process_class> <remote_schedulers select="first"> <remote_scheduler remote_scheduler="http://agent1:4445"/> <remote_scheduler remote_scheduler="http://agent2:4445"/> </remote_schedulers> </process_class>

• All jobs are executed by this Agentthe Primary Agent.
• Only If the Primary Agent becomes unavailable then the Fallback Agent will become active.
• If later on the Primary Agent becomes available then subsequent jobs will be executed on that Agent.

Note that:

• Fixed Priority Scheduling requires that the select parameter is set to first as shown in the code block above.
• If the select parameter is not set then fixed priority scheduling will be carried out by default.

Example

• Download jobfixed_chainpriority_defaultscheduling_agent.zip
  • Extract the archive to your live folder, a directory jobfixed_chainpriority_defaultscheduling_agent will be created.
• The process class - 01_ProcessClass_DefaultFixed_Priority_Scheduling_Agent - has been configured for an Agent on the localhost and port 4445two Agents: adjust these values to point to your default Agent installationinstallations.

Agent configuration for Round-Robin Scheduling

order_1 [shape="ellipse",label="Order",fillcolor="violet"] 
process_class_1 [label="Round-Robin Scheduling Process Class\nassigned to Job Chain",fillcolor="white"] 
agent_1 [label="Agent 1\nFirst Agent",fillcolor="white"] 
agent_2 [label="Agent 2\nSecond Agent",fillcolor="white"] 
agent_11 [label="Agent 1\nFirst Agent",fillcolor="white"]
job_chain_1 [label="Job Chain",fillcolor="orange"]
job_1 [label="Job 1\nexecuted on Agent 1", fillcolor="lightskyblue"]
job_2 [label="Job 2\nexecuted on Agent 2", fillcolor="lightskyblue"]
job_3 [label="Job 3\nexecuted on Agent 21", fillcolor="lightskyblue"]

order_1 -> job_chain_1
process_class_1 -> agent_1
process_class_1 -> agent_2
process_class_1 -> agent_11
job_chain_1 -> job_1 -> job_2 -> job_3

agent_1 -> job_1
agent_211 -> job_23
agent_12 -> job_32

Description

• The job chain is assigned a default Agent.process class is assigned a two Agents that are use interchangeably.

  • Code Block
    language xml title Process Class configuration for Round-Robin Scheduling collapse true
    <process_class> <remote_schedulers select="next"> <remote_scheduler remote_scheduler="http://agent1:4445"/> <remote_scheduler remote_scheduler="http://agent2:4445"/> </remote_schedulers> </process_class>

• Jobs are executed interchangeably on each Agent.
• If one Agent becomes unavailable then the jobs will be executed on the remaining Agent.

Note that:

• Round-Robin Scheduling requires that the select parameter is set to next as shown in the code block above.
• If the select parameter is not set then fixed priority scheduling will be carried out by defaultAll jobs are executed by this Agent.

Example

• Download jobround_chainrobin_defaultscheduling_agent.zip
  • Extract the archive to your live folder, a directory jobdirectory fixed_chainpriority_defaultscheduling_agent will be created.
• The process class - 01_ProcessClass_Round_Robin_DefaultScheduling_Agent - has been configured for an Agent on the localhost and port 4445two Agents: adjust these values to point to your default Agent installationinstallations.

References

Change Management References

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