View source for K8s/N8N

==K8s » Config==
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K8s » Config
|-
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<syntaxhighlight lang="bash">
export KUBECONFIG=${HOME}/.kube/aws-kubeconfig.yaml
export KUBECONFIG=${HOME}/.kube/dev-kubeconfig.yaml
export KUBECONFIG=${HOME}/.kube/gcp-kubeconfig.yaml
</syntaxhighlight>

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<syntaxhighlight lang="bash">
export KUBECONFIG=${HOME}/.kube/shahed-aa-kubeconfig.yaml
export KUBECONFIG=${HOME}/.kube/shahed-ab-kubeconfig.yaml
export KUBECONFIG=${HOME}/.kube/shahed-ac-kubeconfig.yaml
</syntaxhighlight>

|-
|valign='top' colspan='2'|
<syntaxhighlight lang="bash">
export KUBECONFIG=${HOME}/.kube/shahed-ae-kubeconfig.yaml
kubectl config get-contexts
kubectl config view
</syntaxhighlight>
|}

==K8s » Storage==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' colspan='2' style='width:1000px'|
K8s » Storage
|-
|valign='top' colspan='2'|
<syntaxhighlight lang="bash">
cat <<'EXE'| sudo bash
            mkdir -p /var/minikube/pvc/n8n/data-n8n-0/
  chown -R 1000:1000 /var/minikube/pvc/n8n/
EXE
</syntaxhighlight>
|-
|valign='top'|
<syntaxhighlight lang="yaml" highlight="6,15" line>
cat <<'YML'| kubectl apply -f -
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: n8n-data-n8n-0
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: hostpath
  hostPath:
    path: /var/hostpath_pv/n8n/data-n8n-0
    type: DirectoryOrCreate
YML
</syntaxhighlight>

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* [[K8s/Storage#Storage » Mount|Find More 👉 Storage » Mount]]
----
* [[K8s/Storage#Storage » Class » Hostpath|Find More 👉 Storage » Class » Hostpath]]
----
* [[K8s/Storage#Storage » Persistent Volume|Find More 👉 Storage » Persistent Volume]]
----
|}

==K8s » Database==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' style='width:1000px'|
K8s » Database
|-
|valign='top'|
<syntaxhighlight lang="bash">
ssh -qt shahed@shahed-ae.local.or.tunnel.ip bash
echo -n 'Password: ';read -s N8N_PASSWORD;export N8N_PASSWORD;echo
# Password: sadaqah!
</syntaxhighlight>
----
<syntaxhighlight lang="sql">
cat << DDL | psql
\! printf '\n'
SELECT 'CREATE DATABASE shahed_n8n' 
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'shahed_n8n')\gexec
CREATE USER shahed_n8n WITH ENCRYPTED PASSWORD '${N8N_PASSWORD}';

GRANT ALL PRIVILEGES ON DATABASE shahed_n8n TO shahed_n8n;
ALTER DATABASE shahed_n8n OWNER TO shahed_n8n;
DDL
</syntaxhighlight>
|-
|valign='top'|
<syntaxhighlight lang="bash">
echo -n 'Password: ';read -s PGBOUNCER_PASSWORD;export PGBOUNCER_PASSWORD;echo
# Password: sadaqah!
</syntaxhighlight>
----
<syntaxhighlight lang="sql">
cat << DDL | psql
\! printf '\n'
SELECT 'CREATE DATABASE bouncer' 
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'bouncer')\gexec
CREATE USER bouncer WITH ENCRYPTED PASSWORD '${PGBOUNCER_PASSWORD}';

GRANT ALL PRIVILEGES ON DATABASE bouncer TO bouncer;
ALTER DATABASE bouncer OWNER TO bouncer;
DDL
</syntaxhighlight>
|}

==K8s » Deploy==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' colspan='2' style='width:1000px'|
K8s » Deploy
|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl config get-contexts
kubectl config view
</syntaxhighlight>

|valign='top'|
<syntaxhighlight lang="bash">
kubectl create ns   n8n
kubectl get ns|grep n8n
</syntaxhighlight>

|-
|valign='top' colspan='2'|
<syntaxhighlight lang="properties">
cat <<'ENV'| kubectl -n n8n create configmap n8n --from-env-file=/dev/stdin
N8N_PORT=5678
N8N_HOST=n8n.shahed.biz
N8N_RUNNERS_ENABLED=true
GENERIC_TIMEZONE=Asia/Kuala_Lumpur
WEBHOOK_URL=https://n8n.shahed.biz/
N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS=true
ENV
</syntaxhighlight>
----
<syntaxhighlight lang="properties">
cat <<'ENV'| kubectl -n n8n create secret generic n8n --from-env-file=/dev/stdin
DB_TYPE=postgresdb
DB_POSTGRESDB_PORT=5432
DB_POSTGRESDB_USER=shahed_n8n
DB_POSTGRESDB_PASSWORD=sadaqah!
DB_POSTGRESDB_DATABASE=shahed_n8n
DB_POSTGRESDB_HOST=pgbouncer.pgbouncer
ENV
</syntaxhighlight>

|-
|valign='top'|
<syntaxhighlight lang="yaml">
cat <<'YML'| kubectl apply -n n8n -f -
---
apiVersion: v1
kind: Service
metadata:
  name: n8n
  namespace: n8n
  labels:
    app.kubernetes.io/name: n8n
    app.kubernetes.io/instance: n8n
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/managed-by: kubectl
spec:
  selector:
    app: n8n
  ports:
    - targetPort: 5678
      protocol: TCP
      port: 5678
      name: n8n
  type: ClusterIP
YML
</syntaxhighlight>

|valign='top'|
<syntaxhighlight lang="yaml">
cat <<'YML'| kubectl apply -n n8n -f -
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data-n8n-0
  namespace: n8n
  labels:
    app.kubernetes.io/name: n8n
    app.kubernetes.io/instance: n8n
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/managed-by: kubectl
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: hostpath
  volumeName: n8n-data-n8n-0

YML
</syntaxhighlight>

|-
|valign='top' colspan='2'|
<syntaxhighlight lang="yaml">
cat <<'YML'| kubectl apply -n n8n -f -
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: n8n
  namespace: n8n
  labels:
    app: n8n
    app.kubernetes.io/name: n8n
    app.kubernetes.io/instance: n8n
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/managed-by: kubectl
  annotations:
    kubernetes.io/change-cause: "CKI-1| Initial Deployment"
spec:
  replicas: 1
  selector:
    matchLabels:
      app: n8n
  template:
    metadata:
      labels:
        app: n8n
    spec:
      securityContext:
        runAsUser: 1000
        fsGroup: 1000
      containers:
        - name: n8n
          image: docker.n8n.io/n8nio/n8n
          ports:
          - containerPort: 5678
            protocol: TCP
            name: n8n
          resources:
            requests:
              cpu: 100m
              memory: 256Mi
            limits:
              cpu: 250m
              memory: 512Mi
          envFrom:
            - secretRef:
                name: n8n
            - configMapRef:
                name: n8n
          volumeMounts:
          - mountPath: /home/node/.n8n
            name: data-n8n-0
      volumes:
        - name: data-n8n-0
          persistentVolumeClaim:
            claimName: data-n8n-0
YML
</syntaxhighlight>
|}

==K8s » Ingress==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' style='width:1000px'|
K8s » Ingress
|-
|valign='top'|
<syntaxhighlight lang="yaml">
cat << YML | kubectl apply -n n8n -f -
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: n8n
  namespace: n8n
  labels:
    app.kubernetes.io/name: n8n
    app.kubernetes.io/instance: n8n
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/managed-by: kubectl
spec:
  ingressClassName: nginx
  rules:
    - host: n8n.shahed.biz
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: n8n
                port:
                  number: 5678
YML
</syntaxhighlight>
|}

==K8s » Verify==
{|class='wikitable mw-collapsible'
!scope='col' colspan='2' style='width:1000px'|
K8s » Verify
|-
|valign='top' colspan='2'|
<syntaxhighlight lang="bash">
xdg-open https://www.cdn77.com/tls-test/result?domain=n8n.shahed.biz
xdg-open https://n8n.shahed.biz
</syntaxhighlight>

|-
|valign='top' style='width:490px'|
<syntaxhighlight lang="bash">
kubectl -n n8n exec -it svc/n8n -c n8n -- ash
kubectl -n n8n exec -it svc/n8n -- ash
kubectl -n n8n exec -it svc/n8n -- id
kubectl -n n8n logs -f  svc/n8n
</syntaxhighlight>

|valign='top' style='width:490px'|
<syntaxhighlight lang="yaml">
---
Page: https://n8n.shahed.biz
user: tool.tech@shahed.biz
pass: sadaqah!
</syntaxhighlight>
|}

==K8s » Scaling==
{|class='wikitable mw-collapsible'
!scope='col' style='width:1000px'|
K8s » Scaling
|-
|valign='top'|
<syntaxhighlight lang="yaml">
cat <<YML | kubectl -n n8n patch deploy/n8n --patch-file=/dev/stdin
---
spec:
  replicas: 0
YML
</syntaxhighlight>
----
<syntaxhighlight lang="yaml">
cat <<YML | kubectl -n n8n patch deploy/n8n --patch-file=/dev/stdin
---
spec:
  replicas: 1
YML
</syntaxhighlight>
----
<syntaxhighlight lang="yaml">
cat <<YML | kubectl -n n8n patch deploy/n8n --patch-file=/dev/stdin
---
metadata:
  annotations:
    kubernetes.io/change-cause: "CKI-2| Resources Updated"
spec:
  template:
    spec:
      containers:
        - name: n8n
          resources:
            requests:
              cpu: 250m
              memory: 512Mi
            limits:
              cpu: 500m
              memory: 1Gi
YML
</syntaxhighlight>
|}

==K8s » Rolling==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' style='width:1000px'|
K8s » Rollout
|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl -n n8n rollout history deploy/n8n
kubectl -n n8n rollout pause   deploy/n8n
</syntaxhighlight>
----
<syntaxhighlight lang="yaml">
cat <<YML | kubectl -n n8n patch deploy/n8n --patch-file=/dev/stdin
---
metadata:
  annotations:
    kubernetes.io/change-cause: "CKI-2| Container Updated"
spec:
  template:
    spec:
      containers:
        - name: n8n
          resources:
            requests:
              cpu: 250m
              memory: 512Mi
            limits:
              cpu: 500m
              memory: 1Gi
YML
</syntaxhighlight>
----
<syntaxhighlight lang="bash">
kubectl -n n8n annotate        deploy/n8n --overwrite \
 kubernetes.io/change-cause="CKI-2| Resources Updated"

kubectl -n n8n rollout resume  deploy/n8n
kubectl -n n8n rollout history deploy/n8n
</syntaxhighlight>
|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl -n n8n rollout undo    deploy/n8n --to-revision=1
kubectl -n n8n rollout history deploy/n8n
</syntaxhighlight>
----
<syntaxhighlight lang="bash">
kubectl -n n8n annotate        deploy/n8n --overwrite \
 kubernetes.io/change-cause="CKI-3| Revert Back to CKI-1"

kubectl -n n8n rollout history deploy/n8n
</syntaxhighlight>
|}

==K8s » Delete==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' colspan='2' style='width:1000px'|
K8s » Delete
|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl delete svc    --all -n n8n
kubectl delete deploy --all -n n8n
kubectl delete pvc    --all -n n8n
</syntaxhighlight>

|valign='top'|
<syntaxhighlight lang="bash">
kubectl delete pv     n8n-data-n8n-0
kubectl delete all    --all -n n8n
kubectl delete ns     n8n
</syntaxhighlight>
|}

==Playground==
{|class='wikitable mw-collapsible'
!scope='col' colspan='2' style='width:1000px'|
Playground
|-
|valign='top' colspan='2'|
<syntaxhighlight lang="bash">
kubectl -n n8n get secret n8n -o json|jq -r '.data."DB_POSTGRESDB_PASSWORD"'|base64 -d;echo
kubectl -n n8n get cm     n8n -o json|jq -r '.data."GENERIC_TIMEZONE"';echo
</syntaxhighlight>

|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl -n n8n rollout history deploy/n8n
kubectl -n n8n rollout restart deploy/n8n
kubectl -n n8n rollout undo    deploy/n8n
</syntaxhighlight>

|valign='top'|
<syntaxhighlight lang="bash">
kubectl -n n8n rollout pause   deploy/n8n
kubectl -n n8n rollout resume  deploy/n8n
kubectl -n n8n rollout status  deploy/n8n
</syntaxhighlight>

|-
|valign='top'|
<syntaxhighlight lang="bash">
kubectl delete svc    --all -n n8n
kubectl delete deploy --all -n n8n
kubectl delete pvc    --all -n n8n
</syntaxhighlight>

|valign='top'|
<syntaxhighlight lang="bash">
kubectl delete pv     n8n-data-n8n-0
kubectl delete all    --all -n n8n
kubectl delete ns     n8n
</syntaxhighlight>

|-
|valign='top' colspan='2'|
<syntaxhighlight lang="bash">
kubectl -n n8n exec -it svc/n8n -c n8n -- ash
kubectl -n n8n exec -it svc/n8n -- ash
kubectl -n n8n exec -it svc/n8n -- id

kubectl -n n8n logs -f  svc/n8n -c n8n
kubectl -n n8n logs -f  svc/n8n
</syntaxhighlight>
|}

==References==
{|class='wikitable mw-collapsible mw-collapsed'
!scope='col' colspan='3' style='width:1000px'|
References
|-
|valign='top'|
* [[K8s/HAProxy/Ingress|K8s » HAProxy » Ingress]]
* [[K8s/Apache/Ingress|K8s » Apache » Ingress]]
* [[K8s/Nginx/Ingress|K8s » Nginx » Ingress]]
* [[Minikube Ingress DNS|K8s » Ingress » DNS]]
* [[K8s/Swiss Knife|K8s » Swiss Knife]]
* [[K8s/Storage|K8s » Storage]]
* [[K8s/Ingress|K8s » Ingress]]
* [[K8s/Service|K8s » Service]]
* [[K8s/Secret|K8s » Secret]]
* [[K8s/Run|K8s » Run]]

|valign='top'|
* [[K8s/PgBouncer|K8s » PgBouncer]]
* [[K8s/Nexus|K8s » Nexus]]

|valign='top'|

|-
|valign='top'|
* [[Linux Containers]]
* [[Kubernetes]]
* [[Multipass]]
* [[Minikube]]
* [[Podman]]
* [[Vagrant]]
* [[Docker]]
* [[Qemu]]
* [[K9s]]
* [[K8s]]

|valign='top'|
* [[Minikube Ingress DNS|Minikube » Ingress » DNS]]
* [[Minikube Systemd|Minikube » Systemd]]
* [[Minikube Registry|Minikube » Registry]]
* [[Minikube MetalLB|Minikube » MetalLB]]
* [[Minikube Tunnel|Minikube » Tunnel]]
* [[Kubectl]]
* [[Ansible]]
* [[CIDR]]
* [[Helm]]
* [[UFW]]

|valign='top'|
* [[Helm/PostgreSQL/PV|Helm » PostgreSQL » PV]]
* [[PostgreSQL/PgLoader|PostgreSQL » PgLoader]]
* [[PostgreSQL]]
|}