keystore: expose health check config in config file

lib/config/configuration.go

@@ -1065,6 +1065,7 @@ func applyKeyStoreConfig(fc *FileConfig, cfg *servicecfg.Config) error {
 	if fc.Auth.CAKeyParams.AWSKMS != nil {
 		return trace.Wrap(applyAWSKMSConfig(fc.Auth.CAKeyParams.AWSKMS, cfg))
 	}
+	cfg.Auth.KeyStore.HealthCheck = fc.Auth.CAKeyParams.HealthCheck
 	return nil
 }
 

lib/config/configuration_test.go

@@ -3414,6 +3414,44 @@ func TestApplyKeyStoreConfig(t *testing.T) {
 			},
 			errMessage: "must set keyring in ca_key_params.gcp_kms",
 		},
+		{
+			name: "enable health checking",
+			auth: Auth{
+				CAKeyParams: &CAKeyParams{
+					HealthCheck: &servicecfg.KeystoreHealthCheck{
+						Active: &servicecfg.KeystoreActiveHealthCheck{
+							Enabled: true,
+						},
+					},
+				},
+			},
+			want: servicecfg.KeystoreConfig{
+				HealthCheck: &servicecfg.KeystoreHealthCheck{
+					Active: &servicecfg.KeystoreActiveHealthCheck{
+						Enabled: true,
+					},
+				},
+			},
+		},
+		{
+			name: "disable health checking",
+			auth: Auth{
+				CAKeyParams: &CAKeyParams{
+					HealthCheck: &servicecfg.KeystoreHealthCheck{
+						Active: &servicecfg.KeystoreActiveHealthCheck{
+							Enabled: false,
+						},
+					},
+				},
+			},
+			want: servicecfg.KeystoreConfig{
+				HealthCheck: &servicecfg.KeystoreHealthCheck{
+					Active: &servicecfg.KeystoreActiveHealthCheck{
+						Enabled: false,
+					},
+				},
+			},
+		},
 	}
 
 	for _, tt := range tests {

lib/config/fileconf.go

@@ -935,6 +935,8 @@ type CAKeyParams struct {
 	// AWSKMS configures AWS Key Management Service to to be used for
 	// all CA private key crypto operations.
 	AWSKMS *AWSKMS `yaml:"aws_kms,omitempty"`
+	// HealthCheck contains configuration for keystore health checking.
+	HealthCheck *servicecfg.KeystoreHealthCheck `yaml:"health_check,omitempty"`
 }
 
 // PKCS11 configures a PKCS#11 HSM to be used for private key generation and