/
logging.go
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/
logging.go
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// Copyright 2023 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package nodeagent
import (
fluentbitv1alpha2 "github.com/fluent/fluent-operator/v2/apis/fluentbit/v1alpha2"
fluentbitv1alpha2filter "github.com/fluent/fluent-operator/v2/apis/fluentbit/v1alpha2/plugins/filter"
fluentbitv1alpha2input "github.com/fluent/fluent-operator/v2/apis/fluentbit/v1alpha2/plugins/input"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
comp "github.com/gardener/gardener/pkg/component"
)
var (
journaldServiceName = "journald-gardener-node-agent"
)
// CentralLoggingConfiguration returns a fluent-bit parser and filter for the gardener-node-agent logs.
func CentralLoggingConfiguration() (comp.CentralLoggingConfig, error) {
return comp.CentralLoggingConfig{Inputs: generateClusterInputs(), Filters: generateClusterFilters()}, nil
}
func generateClusterInputs() []*fluentbitv1alpha2.ClusterInput {
return []*fluentbitv1alpha2.ClusterInput{
{
ObjectMeta: metav1.ObjectMeta{
Name: journaldServiceName,
Labels: map[string]string{v1beta1constants.LabelKeyCustomLoggingResource: v1beta1constants.LabelValueCustomLoggingResource},
},
Spec: fluentbitv1alpha2.InputSpec{
Systemd: &fluentbitv1alpha2input.Systemd{
Tag: "journald.gardener-node-agent",
ReadFromTail: "on",
SystemdFilter: []string{"_SYSTEMD_UNIT=gardener-node-agent.service"},
},
},
},
}
}
func generateClusterFilters() []*fluentbitv1alpha2.ClusterFilter {
return []*fluentbitv1alpha2.ClusterFilter{
{
ObjectMeta: metav1.ObjectMeta{
Name: journaldServiceName,
Labels: map[string]string{v1beta1constants.LabelKeyCustomLoggingResource: v1beta1constants.LabelValueCustomLoggingResource},
},
Spec: fluentbitv1alpha2.FilterSpec{
Match: "journald.gardener-node-agent*",
FilterItems: []fluentbitv1alpha2.FilterItem{
{
RecordModifier: &fluentbitv1alpha2filter.RecordModifier{
Records: []string{"hostname ${NODE_NAME}", "unit gardener-node-agent"},
},
},
},
},
},
}
}