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logging.go
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logging.go
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// Copyright (c) 2021 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 coredns
import (
"fmt"
"github.com/gardener/gardener/pkg/operation/botanist/component"
)
const (
loggingParser1Name = "coreDNSParser1"
loggingParser1 = `[PARSER]
Name ` + loggingParser1Name + `
Format regex
Regex ^(?<time>\d{4}-\d{2}-\d{2}[Tt].*[zZ])\s+\[(?<severity>\w*[^\]])\]\s+(?<log>.*)
Time_Key time
Time_Format %Y-%m-%dT%H:%M:%S.%L
`
loggingParser2Name = "coreDNSParser2"
loggingParser2 = `[PARSER]
Name ` + loggingParser2Name + `
Format regex
Regex ^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<log>.*)$
Time_Key time
Time_Format %m%d %H:%M:%S.%L
`
loggingFilter = `[FILTER]
Name parser
Match kubernetes.*` + DeploymentName + `*` + containerName + `*
Key_Name log
Parser ` + loggingParser1Name + `
Parser ` + loggingParser2Name + `
Reserve_Data True
`
)
// CentralLoggingConfiguration returns a fluent-bit parser and filter for the CoreDNS logs.
func CentralLoggingConfiguration() (component.CentralLoggingConfig, error) {
return component.CentralLoggingConfig{Filters: loggingFilter, Parsers: fmt.Sprintf("%s\n%s", loggingParser1, loggingParser2)}, nil
}