mirror of
https://github.com/rubenhensen/k8scd.git
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74 lines
2.0 KiB
YAML
74 lines
2.0 KiB
YAML
# cert-manager's three pods reach each other, DNS and the API server (the
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# node, port 16443), and take connections only from each other and the
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# node: the API server calls the webhook from there and the kubelet probes
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# come from there too (10.1.7.64 is the node's Calico VXLAN address,
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# projectcalico.org/IPv4VXLANTunnelAddr). Nothing scrapes the metrics on
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# 9402. The HTTP-01 solver pods run in each Certificate's own namespace
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# (acme-http01-solver in <namespace>/networkpolicy.yaml), not here.
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: default
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spec:
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podSelector: {}
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policyTypes:
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- Ingress
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- Egress
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ingress:
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- from:
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- podSelector: {}
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- from:
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- ipBlock:
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cidr: 192.168.1.204/32
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- ipBlock:
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cidr: 10.1.7.64/32
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egress:
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- to:
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- podSelector: {}
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: kube-system
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podSelector:
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matchLabels:
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k8s-app: kube-dns
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ports:
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- protocol: UDP
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port: 53
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- protocol: TCP
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port: 53
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- to:
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- ipBlock:
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cidr: 192.168.1.204/32
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ports:
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- port: 16443
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---
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# The controller talks to Let's Encrypt (443), and before it lets Let's
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# Encrypt check a challenge it fetches http://<host>/.well-known/... itself
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# (80). Every certificate's host has a public address, node001's or the
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# home router's (checked 2026-10-26), so the LAN stays out.
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: controller-to-internet
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spec:
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podSelector:
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matchLabels:
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app.kubernetes.io/name: cert-manager
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app.kubernetes.io/component: controller
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policyTypes:
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- Egress
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egress:
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- to:
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- ipBlock:
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cidr: 0.0.0.0/0
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except:
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- 10.0.0.0/8
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- 100.64.0.0/10
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- 169.254.0.0/16
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- 172.16.0.0/12
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- 192.168.0.0/16
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ports:
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- port: 80
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- port: 443
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