Fix(#7546): Include nftables information in Agent supportbundle

Signed-off-by: molegit9 <jangfish0925>

Author: molegit9

pkg/flowaggregator/test_2551044057.config

@@ -0,0 +1,23 @@
+flowCollector:
+  enable: true
+  address: 10.10.10.10:155
+clickHouse:
+  enable: true
+s3Uploader:
+  enable: true
+  bucketName: test-bucket-name
+flowLogger:
+  enable: true
+  path: /tmp/antrea-flows.log
+flowCollector:
+  enable: true
+  address: 10.10.10.10:155
+clickHouse:
+  enable: true
+s3Uploader:
+  enable: true
+  bucketName: test-bucket-name
+flowLogger:
+  enable: true
+  path: /tmp/antrea-flows.log
+clusterID: custom-cluster-id

pkg/flowaggregator/test_2797609088.config

@@ -0,0 +1,23 @@
+flowCollector:
+  enable: true
+  address: 10.10.10.10:155
+clickHouse:
+  enable: true
+s3Uploader:
+  enable: true
+  bucketName: test-bucket-name
+flowLogger:
+  enable: true
+  path: /tmp/antrea-flows.log
+flowCollector:
+  enable: true
+  address: 10.10.10.10:155
+clickHouse:
+  enable: true
+s3Uploader:
+  enable: true
+  bucketName: test-bucket-name
+flowLogger:
+  enable: true
+  path: /tmp/antrea-flows.log
+clusterID: custom-cluster-id

pkg/flowaggregator/test_3823393030.config

@@ -25,6 +25,7 @@ import (
 
 	"antrea.io/antrea/pkg/agent/util/iptables"
 	"antrea.io/antrea/pkg/util/logdir"
+	"antrea/pkg/agent/util/nftables"
 )
 
 func (d *agentDumper) DumpLog(basedir string) error {
@@ -41,6 +42,9 @@ func (d *agentDumper) DumpHostNetworkInfo(basedir string) error {
 	if err := d.dumpIPTables(basedir); err != nil {
 		return err
 	}
+	if err := d.dumpNFTables(basedir); err != nil {
+		return err
+	}
 	if err := d.dumpIPToolInfo(basedir); err != nil {
 		return err
 	}
@@ -59,6 +63,35 @@ func (d *agentDumper) dumpIPTables(basedir string) error {
 	return writeFile(d.fs, filepath.Join(basedir, "iptables"), "iptables", data)
 }
 
+func (d *agentDumper) dumpNFTables(basedir string) error {
+	c, err := nftables.New(d.v4Enabled, d.v6Enabled)
+	if err != nil {
+		return err
+	}
+
+	dumpTable := func(family knftables.Family, name string) error {
+		output, err := c.GetInterface(family).DumpTable(context.TODO(), name)
+		if err != nil {
+			return fmt.Errorf("error when dumping %s nftables table %s: %w", family, name, err)
+		}
+		fileName := fmt.Sprintf("nftables-%s", family)
+		return writeFile(d.fs, filepath.Join(basedir, fileName), fileName, output)
+	}
+
+	if d.v4Enabled {
+		if err := dumpTable(knftables.IPv4Family, "antrea"); err != nil {
+			return err
+		}
+	}
+	if d.v6Enabled {
+		if err := dumpTable(knftables.IPv6Family, "antrea"); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (d *agentDumper) dumpIPToolInfo(basedir string) error {
 	dump := func(name string) error {
 		output, err := d.executor.Command("ip", name).CombinedOutput()