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Update whole Bind setup

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This commit is contained in:
Lauri Võsandi 2023-08-19 21:31:30 +03:00
parent aacbb20e13
commit 883da46a3b
14 changed files with 448 additions and 163 deletions
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65
ansible-bind-primary.yml Normal file
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@ -0,0 +1,65 @@
- name: Setup primary nameserver
hosts: ns1.k-space.ee
tasks:
- name: Make sure bind9 is installed
ansible.builtin.apt:
name: bind9
state: present
- name: Configure Bind
register: bind
copy:
dest: /etc/bind/named.conf
content: |
# This file is managed by Ansible
# https://git.k-space.ee/k-space/kube/src/branch/master/ansible-bind-primary.yml
# Do NOT modify manually
include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/readwrite.key";
include "/etc/bind/readonly.key";
# https://kb.isc.org/docs/aa-00723
acl allowed {
172.20.3.0/24;
172.20.4.0/24;
};
acl rejected { !allowed; any; };
zone "." {
type hint;
file "/var/lib/bind/db.root";
};
zone "k-space.ee" {
type master;
file "/var/lib/bind/db.k-space.ee";
allow-update { !rejected; key readwrite; };
allow-transfer { !rejected; key readonly; key readwrite; };
notify explicit; also-notify { 172.20.53.1; 172.20.53.2; 172.20.53.3; };
};
zone "k6.ee" {
type master;
file "/var/lib/bind/db.k6.ee";
allow-update { !rejected; key readwrite; };
allow-transfer { !rejected; key readonly; key readwrite; };
notify explicit; also-notify { 172.20.53.1; 172.20.53.2; 172.20.53.3; };
};
zone "kspace.ee" {
type master;
file "/var/lib/bind/db.kspace.ee";
allow-update { !rejected; key readwrite; };
allow-transfer { !rejected; key readonly; key readwrite; };
notify explicit; also-notify { 172.20.53.1; 172.20.53.2; 172.20.53.3; };
};
- name: Check Bind config
ansible.builtin.shell: "named-checkconf"
- name: Reload Bind config
service:
name: bind9
state: reloaded
when: bind.changed

0
external-dns/.gitignore → bind/.gitignore vendored
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31
bind/README.md Normal file
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@ -0,0 +1,31 @@
# Bind setup
The Bind primary resides outside Kubernetes at `193.40.103.2` and
it's internally reachable via `172.20.0.2`
Bind secondaries are hosted inside Kubernetes and load balanced behind `62.65.250.2`
Ingresses and DNSEndpoints referring to `k-space.ee`, `kspace.ee`, `k6.ee`
are picked up automatically by `external-dns` and updated on primary.
The primary triggers notification events to `172.20.53.{1..3}`
which are internally exposed IP-s of the secondaries.
# Secrets
To configure TSIG secrets:
```
kubectl create secret generic -n bind bind-readonly-secret \
--from-file=readonly.key
kubectl create secret generic -n bind bind-readwrite-secret \
--from-file=readwrite.key
kubectl create secret generic -n bind external-dns
kubectl -n bind delete secret tsig-secret
kubectl -n bind create secret generic tsig-secret \
--from-literal=TSIG_SECRET=$(cat readwrite.key | grep secret | cut -d '"' -f 2)
kubectl -n cert-manager delete secret tsig-secret
kubectl -n cert-manager create secret generic tsig-secret \
--from-literal=TSIG_SECRET=$(cat readwrite.key | grep secret | cut -d '"' -f 2)
```

163
bind/bind-secondary.yaml Normal file
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@ -0,0 +1,163 @@
---
apiVersion: v1
kind: ConfigMap
metadata:
name: bind-secondary-config
data:
named.conf: |
include "/etc/bind/readonly.key";
options {
recursion no;
pid-file "/var/bind/named.pid";
allow-query { 0.0.0.0/0; };
allow-notify { 172.20.0.2; };
allow-transfer { none; };
check-names slave ignore;
};
zone "k-space.ee" { type slave; masters { 172.20.0.2 key readonly; }; };
zone "k6.ee" { type slave; masters { 172.20.0.2 key readonly; }; };
zone "kspace.ee" { type slave; masters { 172.20.0.2 key readonly; }; };
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: bind-secondary
namespace: bind
spec:
replicas: 3
selector:
matchLabels:
app: bind-secondary
template:
metadata:
labels:
app: bind-secondary
spec:
volumes:
- name: run
emptyDir: {}
containers:
- name: bind-secondary
image: internetsystemsconsortium/bind9:9.19
volumeMounts:
- mountPath: /run/named
name: run
workingDir: /var/bind
command:
- named
- -g
- -c
- /etc/bind/named.conf
volumeMounts:
- name: bind-secondary-config
mountPath: /etc/bind
readOnly: true
- name: bind-data
mountPath: /var/bind
volumes:
- name: bind-secondary-config
projected:
sources:
- configMap:
name: bind-secondary-config
- secret:
name: bind-readonly-secret
- name: bind-data
emptyDir: {}
affinity:
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: app
operator: In
values:
- bind-secondary
topologyKey: "kubernetes.io/hostname"
---
apiVersion: v1
kind: Service
metadata:
name: bind-secondary
namespace: bind
spec:
type: LoadBalancer
externalTrafficPolicy: Local
loadBalancerIP: 62.65.250.2
selector:
app: bind-secondary
ports:
- protocol: TCP
port: 53
name: dns-tcp
targetPort: 53
- protocol: UDP
port: 53
name: dns-udp
targetPort: 53
---
apiVersion: v1
kind: Service
metadata:
name: bind-secondary-0
namespace: bind
spec:
type: LoadBalancer
externalTrafficPolicy: Local
loadBalancerIP: 172.20.53.1
selector:
app: bind-secondary
statefulset.kubernetes.io/pod-name: bind-secondary-0
ports:
- protocol: TCP
port: 53
name: dns-tcp
targetPort: 53
- protocol: UDP
port: 53
name: dns-udp
targetPort: 53
---
apiVersion: v1
kind: Service
metadata:
name: bind-secondary-1
namespace: bind
spec:
type: LoadBalancer
externalTrafficPolicy: Local
loadBalancerIP: 172.20.53.2
selector:
app: bind-secondary
statefulset.kubernetes.io/pod-name: bind-secondary-1
ports:
- protocol: TCP
port: 53
name: dns-tcp
targetPort: 53
- protocol: UDP
port: 53
name: dns-udp
targetPort: 53
---
apiVersion: v1
kind: Service
metadata:
name: bind-secondary-2
namespace: bind
spec:
type: LoadBalancer
externalTrafficPolicy: Local
loadBalancerIP: 172.20.53.3
selector:
app: bind-secondary
statefulset.kubernetes.io/pod-name: bind-secondary-2
ports:
- protocol: TCP
port: 53
name: dns-tcp
targetPort: 53
- protocol: UDP
port: 53
name: dns-udp
targetPort: 53

40
bind/external-dns-k-space.yaml Normal file
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@ -0,0 +1,40 @@
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: external-dns-k-space
spec:
revisionHistoryLimit: 0
selector:
matchLabels: &selectorLabels
app.kubernetes.io/name: external-dns
domain: k-space.ee
template:
metadata:
labels: *selectorLabels
spec:
serviceAccountName: external-dns
containers:
- name: external-dns
image: registry.k8s.io/external-dns/external-dns:v0.13.5
envFrom:
- secretRef:
name: tsig-secret
args:
- --events
- --registry=txt
- --txt-prefix=external-dns-
- --txt-owner-id=k8s
- --provider=rfc2136
- --source=ingress
- --source=service
- --source=crd
- --domain-filter=k-space.ee
- --rfc2136-tsig-axfr
- --rfc2136-host=172.20.0.2
- --rfc2136-port=53
- --rfc2136-zone=k-space.ee
- --rfc2136-tsig-keyname=readwrite
- --rfc2136-tsig-secret-alg=hmac-sha512
- --rfc2136-tsig-secret=$(TSIG_SECRET)
# https://github.com/kubernetes-sigs/external-dns/issues/2446

45
external-dns/k6.yaml → bind/external-dns-k6.yaml
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@ -2,8 +2,7 @@
apiVersion: apps/v1 apiVersion: apps/v1
kind: Deployment kind: Deployment
metadata: metadata:
name: k6 name: external-dns-k6
namespace: external-dns
spec: spec:
revisionHistoryLimit: 0 revisionHistoryLimit: 0
selector: selector:
@ -16,27 +15,27 @@ spec:
spec: spec:
serviceAccountName: external-dns serviceAccountName: external-dns
containers: containers:
- name: external-dns - name: external-dns
image: registry.k8s.io/external-dns/external-dns:v0.13.5 image: registry.k8s.io/external-dns/external-dns:v0.13.5
envFrom: envFrom:
- secretRef: - secretRef:
name: tsig-secret name: tsig-secret
args: args:
- --log-level=debug - --log-level=debug
- --events - --events
- --registry=noop - --registry=noop
- --provider=rfc2136 - --provider=rfc2136
- --source=service - --source=service
- --source=crd - --source=crd
- --domain-filter=k6.ee - --domain-filter=k6.ee
- --rfc2136-tsig-axfr - --rfc2136-tsig-axfr
- --rfc2136-host=193.40.103.2 - --rfc2136-host=172.20.0.2
- --rfc2136-port=53 - --rfc2136-port=53
- --rfc2136-zone=k6.ee - --rfc2136-zone=k6.ee
- --rfc2136-tsig-keyname=acme - --rfc2136-tsig-keyname=readwrite
- --rfc2136-tsig-secret-alg=hmac-sha512 - --rfc2136-tsig-secret-alg=hmac-sha512
- --rfc2136-tsig-secret=$(TSIG_SECRET) - --rfc2136-tsig-secret=$(TSIG_SECRET)
# https://github.com/kubernetes-sigs/external-dns/issues/2446 # https://github.com/kubernetes-sigs/external-dns/issues/2446
--- ---
apiVersion: externaldns.k8s.io/v1alpha1 apiVersion: externaldns.k8s.io/v1alpha1
kind: DNSEndpoint kind: DNSEndpoint

45
external-dns/kspace.yaml → bind/external-dns-kspace.yaml
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@ -2,8 +2,7 @@
apiVersion: apps/v1 apiVersion: apps/v1
kind: Deployment kind: Deployment
metadata: metadata:
name: kspace name: external-dns-kspace
namespace: external-dns
spec: spec:
revisionHistoryLimit: 0 revisionHistoryLimit: 0
selector: selector:
@ -16,27 +15,27 @@ spec:
spec: spec:
serviceAccountName: external-dns serviceAccountName: external-dns
containers: containers:
- name: external-dns - name: external-dns
image: registry.k8s.io/external-dns/external-dns:v0.13.5 image: registry.k8s.io/external-dns/external-dns:v0.13.5
envFrom: envFrom:
- secretRef: - secretRef:
name: tsig-secret name: tsig-secret
args: args:
- --events - --events
- --registry=noop - --registry=noop
- --provider=rfc2136 - --provider=rfc2136
- --source=ingress - --source=ingress
- --source=service - --source=service
- --source=crd - --source=crd
- --domain-filter=kspace.ee - --domain-filter=kspace.ee
- --rfc2136-tsig-axfr - --rfc2136-tsig-axfr
- --rfc2136-host=193.40.103.2 - --rfc2136-host=172.20.0.2
- --rfc2136-port=53 - --rfc2136-port=53
- --rfc2136-zone=kspace.ee - --rfc2136-zone=kspace.ee
- --rfc2136-tsig-keyname=acme - --rfc2136-tsig-keyname=readwrite
- --rfc2136-tsig-secret-alg=hmac-sha512 - --rfc2136-tsig-secret-alg=hmac-sha512
- --rfc2136-tsig-secret=$(TSIG_SECRET) - --rfc2136-tsig-secret=$(TSIG_SECRET)
# https://github.com/kubernetes-sigs/external-dns/issues/2446 # https://github.com/kubernetes-sigs/external-dns/issues/2446
--- ---
apiVersion: externaldns.k8s.io/v1alpha1 apiVersion: externaldns.k8s.io/v1alpha1
kind: DNSEndpoint kind: DNSEndpoint

58
bind/external-dns.yaml Normal file
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@ -0,0 +1,58 @@
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: external-dns
rules:
- apiGroups:
- ""
resources:
- services
- endpoints
- pods
- nodes
verbs:
- get
- watch
- list
- apiGroups:
- extensions
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- externaldns.k8s.io
resources:
- dnsendpoints
verbs:
- get
- watch
- list
- apiGroups:
- externaldns.k8s.io
resources:
- dnsendpoints/status
verbs:
- update
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: external-dns
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: external-dns-viewer
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: external-dns
subjects:
- kind: ServiceAccount
name: external-dns
namespace: bind

15
external-dns/README.md
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@ -1,15 +0,0 @@
Before applying replace the secret with the actual one.
For debugging add `- --log-level=debug`:
```
wget https://raw.githubusercontent.com/kubernetes-sigs/external-dns/master/docs/contributing/crd-source/crd-manifest.yaml -O crd.yml
kubectl apply -n external-dns -f application.yml -f crd.yml
```
Insert TSIG secret:
```
kubectl -n external-dns create secret generic tsig-secret \
--from-literal=TSIG_SECRET=<secret>
```

101
external-dns/k-space.yaml
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@ -1,101 +0,0 @@
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: external-dns
namespace: external-dns
rules:
- apiGroups:
- ""
resources:
- services
- endpoints
- pods
- nodes
verbs:
- get
- watch
- list
- apiGroups:
- extensions
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- externaldns.k8s.io
resources:
- dnsendpoints
verbs:
- get
- watch
- list
- apiGroups:
- externaldns.k8s.io
resources:
- dnsendpoints/status
verbs:
- update
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: external-dns
namespace: external-dns
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: external-dns-viewer
namespace: external-dns
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: external-dns
subjects:
- kind: ServiceAccount
name: external-dns
namespace: external-dns
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: k-space
namespace: external-dns
spec:
revisionHistoryLimit: 0
selector:
matchLabels: &selectorLabels
app.kubernetes.io/name: external-dns
domain: k-space.ee
template:
metadata:
labels: *selectorLabels
spec:
serviceAccountName: external-dns
containers:
- name: external-dns
image: registry.k8s.io/external-dns/external-dns:v0.13.5
envFrom:
- secretRef:
name: tsig-secret
args:
- --events
- --registry=txt
- --txt-prefix=external-dns-
- --txt-owner-id=k8s
- --provider=rfc2136
- --source=ingress
- --source=service
- --source=crd
- --domain-filter=k-space.ee
- --rfc2136-tsig-axfr
- --rfc2136-host=193.40.103.2
- --rfc2136-port=53
- --rfc2136-zone=k-space.ee
- --rfc2136-tsig-keyname=acme
- --rfc2136-tsig-secret-alg=hmac-sha512
- --rfc2136-tsig-secret=$(TSIG_SECRET)
# https://github.com/kubernetes-sigs/external-dns/issues/2446

3
inventory.yml
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@ -1,5 +1,8 @@
all: all:
children: children:
bind:
hosts:
ns1.k-space.ee:
kubernetes: kubernetes:
children: children:
masters: masters:

21
inventory/README.md Normal file
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@ -0,0 +1,21 @@
To deploy components:
```
kubectl create namespace members-site
kubectl apply -n members-site -f doorboy.yml
```
# Doorboy
Set up Doorboy UID hashing salt:
```
kubectl create secret generic -n members-site doorboy-api \
--from-literal=DOORBOY_SECRET=hg2NmVlf6JcS3w237ZXn
kubectl create secret generic -n members-site doorboy-uid-hash-salt \
--from-literal=KDOORPI_UID_SALT=hkRXwLlQKmCJoy5qaahp
kubectl create secret generic -n members-site mongo-application-readwrite \
--from-literal=connectionString.standard=mongodb://kspace_accounting:dBDCS21pHlZAd5isyfBI@mongodb.infra.k-space.ee:27017/kspace_accounting?replicaSet=kspace-mongo-set
```

22
metallb-system/application.yml
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@ -35,7 +35,9 @@ metadata:
namespace: metallb-system namespace: metallb-system
spec: spec:
ipAddressPools: ipAddressPools:
- zoo - zoo
- bind-secondary-external
- bind-secondary-internal
--- ---
# Slice of public EEnet subnet using MetalLB L3 method # Slice of public EEnet subnet using MetalLB L3 method
apiVersion: metallb.io/v1beta1 apiVersion: metallb.io/v1beta1
@ -57,6 +59,24 @@ spec:
addresses: addresses:
- 62.65.250.36/30 - 62.65.250.36/30
--- ---
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
name: bind-secondary-internal
namespace: metallb-system
spec:
addresses:
- 172.20.53.0/24
---
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
name: bind-secondary-external
namespace: metallb-system
spec:
addresses:
- 62.65.250.2/32
---
apiVersion: metallb.io/v1beta2 apiVersion: metallb.io/v1beta2
kind: BGPPeer kind: BGPPeer
metadata: metadata:

2
ssh_config
View File

@ -4,3 +4,5 @@ Host *
ControlMaster auto ControlMaster auto
ControlPath ~/.ssh/cm-%r@%h:%p ControlPath ~/.ssh/cm-%r@%h:%p
Host ns1.k-space.ee
Hostname 172.20.0.2