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-26
View File
@@ -55,29 +55,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
+19
View File
@@ -0,0 +1,19 @@
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: cloudnative-pg-folder
namespace: argocd
finalizers:
- resources-finalizer.argocd.argoproj.io
spec:
project: default
source:
repoURL: https://github.com/rubenhensen/k8scd.git
targetRevision: HEAD
path: cloudnative-pg
destination:
server: https://kubernetes.default.svc
namespace: cnpg-system
syncPolicy:
automated:
selfHeal: true
+19
View File
@@ -0,0 +1,19 @@
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: default-folder
namespace: argocd
finalizers:
- resources-finalizer.argocd.argoproj.io
spec:
project: default
source:
repoURL: https://github.com/rubenhensen/k8scd.git
targetRevision: HEAD
path: default
destination:
server: https://kubernetes.default.svc
namespace: default
syncPolicy:
automated:
selfHeal: true
@@ -0,0 +1,19 @@
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: external-secrets-folder
namespace: argocd
finalizers:
- resources-finalizer.argocd.argoproj.io
spec:
project: default
source:
repoURL: https://github.com/rubenhensen/k8scd.git
targetRevision: HEAD
path: external-secrets
destination:
server: https://kubernetes.default.svc
namespace: external-secrets
syncPolicy:
automated:
selfHeal: true
-26
View File
@@ -135,29 +135,3 @@ spec:
cidr: 192.168.1.204/32
ports:
- port: 16443
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -54,29 +54,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
+73
View File
@@ -0,0 +1,73 @@
# cert-manager's three pods reach each other, DNS and the API server (the
# node, port 16443), and take connections only from each other and the
# node: the API server calls the webhook from there and the kubelet probes
# come from there too (10.1.7.64 is the node's Calico VXLAN address,
# projectcalico.org/IPv4VXLANTunnelAddr). Nothing scrapes the metrics on
# 9402. The HTTP-01 solver pods run in each Certificate's own namespace
# (acme-http01-solver in <namespace>/networkpolicy.yaml), not here.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
ingress:
- from:
- podSelector: {}
- from:
- ipBlock:
cidr: 192.168.1.204/32
- ipBlock:
cidr: 10.1.7.64/32
egress:
- to:
- podSelector: {}
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 192.168.1.204/32
ports:
- port: 16443
---
# The controller talks to Let's Encrypt (443), and before it lets Let's
# Encrypt check a challenge it fetches http://<host>/.well-known/... itself
# (80). Every certificate's host has a public address, node001's or the
# home router's (checked 2026-10-26), so the LAN stays out.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: controller-to-internet
spec:
podSelector:
matchLabels:
app.kubernetes.io/name: cert-manager
app.kubernetes.io/component: controller
policyTypes:
- Egress
egress:
- to:
- ipBlock:
cidr: 0.0.0.0/0
except:
- 10.0.0.0/8
- 100.64.0.0/10
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
ports:
- port: 80
- port: 443
+56
View File
@@ -0,0 +1,56 @@
# The CloudNativePG operator reaches DNS, the API server (the node, port
# 16443) and the PostgreSQL instances it runs in other namespaces: the
# instance manager's status port (8000) and PostgreSQL (5432), which the
# instances' own policies let in (postgres-cnpg in authentik and immich).
# Besides its own namespace it takes connections only from the node: the
# API server calls its webhook (9443) from there and the kubelet probes
# come from there too (10.1.7.64 is the node's Calico VXLAN address,
# projectcalico.org/IPv4VXLANTunnelAddr). The chart's Application
# (apps/templates/cloudnativepg-helm.yaml) only installs the chart, so
# this folder gets an Application of its own, cloudnative-pg-folder.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
ingress:
- from:
- podSelector: {}
- from:
- ipBlock:
cidr: 192.168.1.204/32
- ipBlock:
cidr: 10.1.7.64/32
egress:
- to:
- podSelector: {}
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 192.168.1.204/32
ports:
- port: 16443
- to:
- namespaceSelector: {}
podSelector:
matchExpressions:
- key: cnpg.io/cluster
operator: Exists
ports:
- port: 8000
- port: 5432
+14
View File
@@ -0,0 +1,14 @@
# Nothing runs in default (2026-10-26: only the kubernetes Service, whose
# endpoint is the API server on the node, which this doesn't touch). A pod
# started here, by `kubectl run` or a manifest without a namespace, gets
# no network at all, instead of reaching the LAN, Vault and every app.
# Anything that needs a network gets a namespace and a policy of its own.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default-deny
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
+1
View File
@@ -7,6 +7,7 @@ resources:
- external-secret.yaml
- rbac.yaml
- cronjob.yaml
- networkpolicy.yaml
configMapGenerator:
- name: dns-sync-script
+37
View File
@@ -0,0 +1,37 @@
# The only pod here is the dns-sync Job (a PostSync hook): it installs its
# Python packages from PyPI and pushes domains/ to TransIP's API, so it
# reaches DNS and the internet (not the LAN, the API server or other
# namespaces). Nothing connects to it.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
egress:
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 0.0.0.0/0
except:
- 10.0.0.0/8
- 100.64.0.0/10
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
ports:
- port: 443
+68
View File
@@ -0,0 +1,68 @@
# External Secrets' three pods reach each other, DNS and the API server
# (the node, port 16443); the controller also reads Vault
# (vault-active.vault.svc:8200, which vault/networkpolicy.yaml lets it
# into). Besides their own namespace they take connections only from the
# node: the API server calls the webhook from there and the kubelet probes
# come from there too (10.1.7.64 is the node's Calico VXLAN address,
# projectcalico.org/IPv4VXLANTunnelAddr). The Password generator behind
# gatus/backup-check-token needs no network. The chart's Application
# (apps/templates/external-secrets-helm.yaml) only installs the chart, so
# this folder gets an Application of its own, external-secrets-folder.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
ingress:
- from:
- podSelector: {}
- from:
- ipBlock:
cidr: 192.168.1.204/32
- ipBlock:
cidr: 10.1.7.64/32
egress:
- to:
- podSelector: {}
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 192.168.1.204/32
ports:
- port: 16443
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: controller-to-vault
spec:
podSelector:
matchLabels:
app.kubernetes.io/name: external-secrets
policyTypes:
- Egress
egress:
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: vault
podSelector:
matchLabels:
app.kubernetes.io/name: vault
ports:
- port: 8200
-26
View File
@@ -56,29 +56,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -83,29 +83,3 @@ spec:
cidr: 192.168.1.204/32
ports:
- port: 16443
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -55,29 +55,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -100,29 +100,3 @@ spec:
cidr: 192.168.1.204/32
ports:
- port: 16443
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
+1
View File
@@ -3,3 +3,4 @@ kind: Kustomization
resources:
- operator-crds-helm.yaml
- operator-helm.yaml
- networkpolicy.yaml
+54
View File
@@ -0,0 +1,54 @@
# The mariadb-operator's three pods reach each other, DNS and the API
# server (the node, port 16443); the operator also connects to MariaDB on
# 3306 for the databases, users and grants it manages (mbgwp's
# mariadb-from-operator lets it in). Besides their own namespace they take
# connections only from the node: the API server calls the webhook from
# there and the kubelet probes come from there too (10.1.7.64 is the node's
# Calico VXLAN address, projectcalico.org/IPv4VXLANTunnelAddr). This
# folder's Application deploys into argocd (the operator's own
# Applications), hence the namespace here.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
namespace: mariadb-system
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
ingress:
- from:
- podSelector: {}
- from:
- ipBlock:
cidr: 192.168.1.204/32
- ipBlock:
cidr: 10.1.7.64/32
egress:
- to:
- podSelector: {}
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 192.168.1.204/32
ports:
- port: 16443
- to:
- namespaceSelector: {}
podSelector:
matchLabels:
app.kubernetes.io/name: mariadb
ports:
- port: 3306
-26
View File
@@ -85,29 +85,3 @@ spec:
kubernetes.io/metadata.name: mariadb-system
ports:
- port: 3306
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -65,29 +65,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -54,29 +54,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
-26
View File
@@ -66,29 +66,3 @@ spec:
- 169.254.0.0/16
- 172.16.0.0/12
- 192.168.0.0/16
---
# cert-manager's HTTP-01 solver, which runs only while a certificate
# renews: Let's Encrypt and cert-manager's own self check reach it on 8089
# through Envoy. The policies above let Envoy reach the app's port only,
# which left the solver unreachable (found 2026-10-26, when ynab's renewal
# hung).
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: acme-http01-solver
spec:
podSelector:
matchLabels:
acme.cert-manager.io/http01-solver: "true"
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: envoy-gateway-system
podSelector:
matchLabels:
app.kubernetes.io/name: envoy
ports:
- port: 8089
+52
View File
@@ -0,0 +1,52 @@
# Velero, its node agent, and the pods it starts here (the data movers of
# each pod volume backup or restore, kopia's maintenance jobs, the chart's
# CRD upgrade job) reach each other, DNS, the API server (the node, port
# 16443) and Garage on the NAS (192.168.1.99:3900, nas/garage). The node
# agent reads volumes through its hostPath mount, not the network. Besides
# their own namespace they take connections only from the node (kubelet
# probes; 10.1.7.64 is the node's Calico VXLAN address,
# projectcalico.org/IPv4VXLANTunnelAddr); nothing scrapes the metrics on
# 8085. MinIO (the NAS, port 9000) is not allowed: going back to it means
# adding its port here as well.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default
spec:
podSelector: {}
policyTypes:
- Ingress
- Egress
ingress:
- from:
- podSelector: {}
- from:
- ipBlock:
cidr: 192.168.1.204/32
- ipBlock:
cidr: 10.1.7.64/32
egress:
- to:
- podSelector: {}
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- protocol: UDP
port: 53
- protocol: TCP
port: 53
- to:
- ipBlock:
cidr: 192.168.1.204/32
ports:
- port: 16443
- to:
- ipBlock:
cidr: 192.168.1.99/32
ports:
- port: 3900