The Lambda function outputs messages to the following log group:
/aws/lambda/<Lambda function name>
<Lambda Function Name> is the name of the Lambda function configured for switcher. For details, please refer to "Configuring AWS Lambda" in "Using the Smart Workload Recovery Feature" in the "PRIMECLUSTER Installation and Administration Guide Cloud Services".
Information
Log Group is the unit of log management in Amazon CloudWatch Logs (the Log Management Service).
For details on Log Group, refer to "Amazon CloudWatch Logs User Guide".
The variables that appear in the Lambda function message are as follows:
Value | Contents |
|---|---|
system_id | Integer value identifying the cluster node |
instance_id | Instance ID of the source instance |
new_instance_id | Instance ID of the target instance |
event_id | ID of the event that occurred during the switch |
event_type | Type of event that occurred during the switch |
bhsg_id | Security group ID applied for data protection |
target_id | Target group ID of the ELB to which you want to add the target instance |
state | State used by the switch for internal control.
|
is_recovery_target | The value of the instance's tag "fujitsu.swr.is_recovery_target" |
PCLSWR_SYSTEM_LIST | AWS Lambda Environment Variables Configured in a Running Lambda Function |
alarm_name | CloudWatch alarm name whose configuration is updated on the target instance |
ami_id | The ID of the Amazon Machine Image (Hereinafter referred to as AMI) to use in creating the instance |
The execution managed object is the value used to prevent double execution of the Lambda function when switching. If the execution management object is SWITCHING, the Lambda function is not executed. The values indicate the following:
Value | Contents |
|---|---|
SWITCHING | The Lambda function is running. |
NOT_SWITCHED | The Lambda function is not running. |
Point
Handling messages in your Lambda function may require you to check the tags on your instance. To verify the tag, do the following:
Open the Amazon EC2 service management screen and choose the < Instances > button from the sidebar.
From the list of displayed instances, select an instance with the same instance ID as the < instance_id > output in the message.
Select the Tags tab from the instance detail. Displays the tags for the instance.
