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4.4. BaselineAdminNetworkPolicy 审计日志记录

使用 k8s.ovn.org/acl-logging 键注解 BANP 策略，在 BaselineAdminNetworkPolicy CR 中启用审计日志记录，如下例所示：

例 4.5. BaselineAdminNetworkPolicy CR 的注解示例

apiVersion: policy.networking.k8s.io/v1alpha1
kind: BaselineAdminNetworkPolicy
metadata:
  annotations:
    k8s.ovn.org/acl-logging: '{ "deny": "alert", "allow": "alert"}'
  name: default
spec:
  subject:
    namespaces:
      matchLabels:
          tenant: workloads # Selects all workload pods in the cluster.
  ingress:
  - name: "default-allow-dns" # This rule allows ingress from dns tenant to all workloads.
    action: "Allow"
    from:
    - namespaces:
          matchLabels:
            tenant: dns
  - name: "default-deny-dns" # This rule denies all ingress from all pods to workloads.
    action: "Deny"
    from:
    - namespaces: {} # Use the empty selector with caution because it also selects OpenShift namespaces as well.
  egress:
  - name: "default-deny-dns" # This rule denies all egress from workloads. It will be applied when no ANP or network policy matches.
    action: "Deny"
    to:
    - namespaces: {} # Use the empty selector with caution because it also selects OpenShift namespaces as well.
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在示例中，一个事件，其中任何带有标签 tenant: dns 的命名空间都访问带有标签 tenant: workload 的命名空间，则会生成日志。

以下是以下示例日志条目的方向索引：

Expand
方向规则

入口

Rule0
允许从租户 dns 到租户 workloads; Ingress0: Allow
Rule1
拒绝从所有 pod 到租户 workloads; Ingress1: Deny

Egress

Rule0
拒绝所有 pod; Egress0: Deny

例 4.6. ACL allow 日志项示例，用于带有 Ingress:0 的 default BANP 的 Allow 操作

2024-06-10T18:11:58.263Z|00022|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=syn
2024-06-10T18:11:58.264Z|00023|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=psh|ack
2024-06-10T18:11:58.264Z|00024|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=ack
2024-06-10T18:11:58.264Z|00025|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=ack
2024-06-10T18:11:58.264Z|00026|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=fin|ack
2024-06-10T18:11:58.264Z|00027|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:0", verdict=allow, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:57,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.87,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=60510,tp_dst=8080,tcp_flags=ack
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例 4.7. ACL allow 日志项示例，用于带有 Egress:0 和 Ingress:1 的 default BANP 的 Allow 操作

2024-06-10T18:09:57.774Z|00016|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Egress:0", verdict=drop, severity=alert, direction=from-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:56,dl_dst=0a:58:0a:82:02:57,nw_src=10.130.2.86,nw_dst=10.130.2.87,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=45614,tp_dst=8080,tcp_flags=syn
2024-06-10T18:09:58.809Z|00017|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Egress:0", verdict=drop, severity=alert, direction=from-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:56,dl_dst=0a:58:0a:82:02:57,nw_src=10.130.2.86,nw_dst=10.130.2.87,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=45614,tp_dst=8080,tcp_flags=syn
2024-06-10T18:10:00.857Z|00018|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Egress:0", verdict=drop, severity=alert, direction=from-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:56,dl_dst=0a:58:0a:82:02:57,nw_src=10.130.2.86,nw_dst=10.130.2.87,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=45614,tp_dst=8080,tcp_flags=syn
2024-06-10T18:10:25.414Z|00019|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:1", verdict=drop, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:58,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.88,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=40630,tp_dst=8080,tcp_flags=syn
2024-06-10T18:10:26.457Z|00020|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:1", verdict=drop, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:58,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.88,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=40630,tp_dst=8080,tcp_flags=syn
2024-06-10T18:10:28.505Z|00021|acl_log(ovn_pinctrl0)|INFO|name="BANP:default:Ingress:1", verdict=drop, severity=alert, direction=to-lport: tcp,vlan_tci=0x0000,dl_src=0a:58:0a:82:02:58,dl_dst=0a:58:0a:82:02:56,nw_src=10.130.2.88,nw_dst=10.130.2.86,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=40630,tp_dst=8080,tcp_flags=syn
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下表描述了 BANP 注解：

Expand
表 4.4. 审计日志记录 BaselineAdminNetworkPolicy 注解
注解value

k8s.ovn.org/acl-logging

您必须至少指定 Allow 或 Deny 之一才能为命名空间启用审计日志记录。

Deny
可选：指定 alert、warning、notice、info 或 debug。
Allow
可选：指定 alert、warning、notice、info 或 debug。
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