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Example of the K8S deployment.
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# How to install Dawarich on Kubernetes
## Prerequisites
- Kubernetes cluster and basic kubectl knowledge.
- Some persistent storage class prepared, in this example, Longhorn.
- Working Postgres and Redis instances. In this example Postgres lives in 'db' namespace and Redis in 'redis' namespace.
- Ngingx ingress controller with Letsencrypt integeation.
- This example uses 'example.com' as a domain name, you want to change it to your own.
## Installation
### Namespace
```bash
kubectl create namespace dawarich
```
### Persistent volume claims
```yaml
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
namespace: dawarich
name: public
labels:
storage.k8s.io/name: longhorn
spec:
accessModes:
- ReadWriteOnce
storageClassName: longhorn
resources:
requests:
storage: 15Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
namespace: dawarich
name: gem-cache
labels:
storage.k8s.io/name: longhorn
spec:
accessModes:
- ReadWriteOnce
storageClassName: longhorn
resources:
requests:
storage: 15Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
namespace: dawarich
name: gem-sidekiq
labels:
storage.k8s.io/name: longhorn
spec:
accessModes:
- ReadWriteOnce
storageClassName: longhorn
resources:
requests:
storage: 15Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
namespace: dawarich
name: watched
labels:
storage.k8s.io/name: longhorn
spec:
accessModes:
- ReadWriteOnce
storageClassName: longhorn
resources:
requests:
storage: 15Gi
```
### Deployment
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: dawarich
namespace: dawarich
labels:
app: dawarich
spec:
selector:
matchLabels:
app: dawarich
template:
metadata:
labels:
app: dawarich
spec:
containers:
- name: dawarich
env:
- name: TIME_ZONE
value: "Europe/Prague"
- name: RAILS_ENV
value: development
- name: REDIS_URL
value: redis://redis-master.redis.svc.cluster.local:6379/10
- name: REDIS_PASSWORD
valueFrom:
secretKeyRef:
name: redis-password
key: redis-password
- name: DATABASE_HOST
value: postgres-postgresql.db.svc.cluster.local
- name: DATABASE_PORT
value: "5432"
- name: DATABASE_USERNAME
value: postgres
- name: DATABASE_PASSWORD
value: Password123!
- name: DATABASE_NAME
value: dawarich_development
- name: MIN_MINUTES_SPENT_IN_CITY
value: "60"
- name: APPLICATION_HOST
value: localhost
- name: APPLICATION_HOSTS
value: "dawarich.example.com, localhost"
- name: APPLICATION_PROTOCOL
value: http
- name: DISTANCE_UNIT
value: km
- name: PHOTON_API_HOST
value: photon.komoot.io
- name: PHOTON_API_USE_HTTPS
value: "true"
- name: RAILS_MIN_THREADS
value: "5"
- name: RAILS_MAX_THREADS
value: "10"
image: freikin/dawarich:0.16.4
imagePullPolicy: Always
volumeMounts:
- mountPath: /usr/local/bundle/gems_app
name: gem-cache
- mountPath: /var/app/public
name: public
- mountPath: /var/app/tmp/imports/watched
name: watched
command:
- "dev-entrypoint.sh"
args:
- "bin/rails server -p 3000 -b 0.0.0.0"
resources:
requests:
memory: "1Gi"
cpu: "250m"
limits:
memory: "3Gi"
cpu: "2000m"
ports:
- containerPort: 3000
- name: dawarich-sidekiq
env:
- name: RAILS_ENV
value: development
- name: REDIS_URL
value: redis://redis-master.redis.svc.cluster.local:6379/10
- name: DATABASE_HOST
value: postgres-postgresql.db.svc.cluster.local
- name: DATABASE_PORT
value: "5432"
- name: DATABASE_USERNAME
value: postgres
- name: DATABASE_PASSWORD
value: Password123!
- name: DATABASE_NAME
value: dawarich_development
- name: RAILS_MIN_THREADS
value: "5"
- name: RAILS_MAX_THREADS
value: "10"
- name: BACKGROUND_PROCESSING_CONCURRENCY
value: "20"
- name: APPLICATION_HOST
value: localhost
- name: APPLICATION_HOSTS
value: "dawarich.example.com, localhost"
- name: APPLICATION_PROTOCOL
value: http
- name: DISTANCE_UNIT
value: km
- name: PHOTON_API_HOST
value: photon.komoot.io
- name: PHOTON_API_USE_HTTPS
value: "true"
image: freikin/dawarich:0.16.4
imagePullPolicy: Always
volumeMounts:
- mountPath: /usr/local/bundle/gems_sidekiq
name: gem-sidekiq
- mountPath: /var/app/public
name: public
- mountPath: /var/app/tmp/imports/watched
name: watched
command:
- "dev-entrypoint.sh"
args:
- "sidekiq"
resources:
requests:
memory: "1Gi"
cpu: "250m"
limits:
memory: "3Gi"
cpu: "1500m"
volumes:
- name: gem-cache
persistentVolumeClaim:
claimName: gem-cache
- name: gem-sidekiq
persistentVolumeClaim:
claimName: gem-sidekiq
- name: public
persistentVolumeClaim:
claimName: public
- name: watched
persistentVolumeClaim:
claimName: watched
```
### Service and Ingress
```yaml
---
apiVersion: v1
kind: Service
metadata:
namespace: dawarich
labels:
service: dawarich
name: dawarich
spec:
ports:
- protocol: TCP
port: 3000
targetPort: 3000
selector:
app: dawarich
---
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
namespace: dawarich
name: dawarich-ingress
annotations:
kubernetes.io/ingress.class: "nginx"
cert-manager.io/cluster-issuer: letsencrypt-prod
nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
nginx.ingress.kubernetes.io/rewrite-target: /
nginx.ingress.kubernetes.io/proxy-body-size: 1000m
spec:
tls:
- hosts:
- dawarich.example.com
secretName: letsencrypt-prod
rules:
- host: dawarich.example.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: dawarich
port:
number: 3000
```