Override Informer parameters from the Instance

Control Kubernetes Visibility Agent Informer execution parameters from the ServiceNow Instance to avoid dependence on your Kubernetes admin.

Before you begin

Role required: discovery_admin

About this task

The Informer execution parameters are configured during deployment using the Kubernetes Yaml file or the Helm command. If you need to change these settings later, you can do so directly from the Instance without having to ask your Kubernetes team to update or reinstall the deployment.

When you add or modify a parameter, it is synchronized with the informer through the ECC Queue. Depending on the parameter, the Informer pod may need to restart. Parameters requiring a restart must have the SELF_PATCHING_ALLOWED environment variable set to true for changes to be effective upon restart. If this variable is set to false, the Informer is not restarted and continues to use the old values.

Note:

Informer-specific parameters only affect a specific Informer. If you add a parameter without assigning it to an Informer, it defaults to a global parameter and affects all Informers in the system. When both global and Informer-specific parameters are present, Informer-specific parameters take precedence.

You can update the following parameters from the Instance:

Parameter	Restart upon change
VERBOSE_LOGGING	No
OPENSHIFT	Yes
CREATE_SERVER_CI	No
INCLUDE_LABELS_AND_ANNOTATIONS	No
EXCLUDE_LABELS_AND_ANNOTATIONS	No
FULL_DISCOVERY_MIN	Yes
SEND_INTERVAL_SEC	Yes
CONTINUOUS_DISCOVERY	Yes
CLUSTER_RESOURCE_ID	No
CLUSTER_NAME	No

The CREATE_CONTAINERS parameter determines which Docker containers are deployed to the instance. It is managed automatically and is not exposed in the Configuration Parameters list. A new system property, sn_itom_pattern.bring_discovery_container, which is available when the Discovery and Service Mapping Patterns plugin is installed, governs CREATE_CONTAINERS automatically. When sn_itom_pattern.bring_discovery_container is set to true (default), CREATE_CONTAINERS is set to non-init-containers. When set to false, CREATE_CONTAINERS is set to none and no Docker containers are brought to the instance. Each change triggers the ECC Queue sync to propagate the updated value with the Informer.

For information about the purpose of each parameter, see the Kubernetes Visibility Agent (formerly CNO for Visibility) Advanced Configuration Options [KB1648891] article in the Now Support Knowledge Base.

Procedure

1. Navigate to All > Kubernetes Visibility Agent > Configuration Parameters.
2. Select a parameter in the Kubernetes Informer Parameters list.
3. Change the configured value as needed, and then select Update.