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54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
//go:build linux
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/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package nftables
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import (
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"context"
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"k8s.io/klog/v2"
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"sigs.k8s.io/knftables"
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)
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// CleanupLeftovers removes all nftables rules and chains created by the Proxier
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// It returns true if an error was encountered. Errors are logged.
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func CleanupLeftovers(ctx context.Context) (encounteredError bool) {
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for _, family := range []knftables.Family{knftables.IPv4Family, knftables.IPv6Family} {
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nft, err := knftables.New(family, kubeProxyTable)
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if err != nil {
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continue
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}
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encounteredError = cleanupLeftoversForFamily(ctx, nft) || encounteredError
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}
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return
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}
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func cleanupLeftoversForFamily(ctx context.Context, nft knftables.Interface) (encounteredError bool) {
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logger := klog.FromContext(ctx)
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tx := nft.NewTransaction()
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tx.Delete(&knftables.Table{})
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err := nft.Run(ctx, tx)
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if err != nil && !knftables.IsNotFound(err) {
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logger.Error(err, "Error cleaning up nftables rules")
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return true
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}
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return false
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}
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