7.3. AlertmanagerMainConfig

The AlertmanagerMainConfig resource defines settings for the Alertmanager component in the openshift-monitoring namespace.

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Property	Type	Description
enabled	*bool	A Boolean flag that enables or disables the main Alertmanager instance in the `openshift-monitoring` namespace. The default value is `true`.
enableUserAlertmanagerConfig	bool	A Boolean flag that enables or disables user-defined namespaces to be selected for `AlertmanagerConfig` lookups. This setting only applies if the user workload monitoring instance of Alertmanager is not enabled. The default value is `false`.
logLevel	string	Defines the log level setting for Alertmanager. The possible values are: `error`, `warn`, `info`, `debug`. The default value is `info`.
nodeSelector	map[string]string	Defines the nodes on which the Pods are scheduled.
resources	*v1.ResourceRequirements	Defines resource requests and limits for the Alertmanager container.
secrets	[]string	Defines a list of secrets to be mounted into Alertmanager. The secrets must reside within the same namespace as the Alertmanager object. They are added as volumes named `secret-<secret-name>` and mounted at `/etc/alertmanager/secrets/<secret-name>` in the `alertmanager` container of the Alertmanager pods.
tolerations	[]v1.Toleration	Defines tolerations for the pods.
topologySpreadConstraints	[]v1.TopologySpreadConstraint	Defines a pod’s topology spread constraints.
volumeClaimTemplate	*monv1.EmbeddedPersistentVolumeClaim	Defines persistent storage for Alertmanager. Use this setting to configure the persistent volume claim, including storage class, volume size, and name.