120 lines
6.3 KiB
Markdown
120 lines
6.3 KiB
Markdown
# Challenge
|
|
|
|
The infrastructure is set up with minikube and fluxcd.
|
|
The bitnami PostgreSQL HA chart is used for a highly available PostgreSQL
|
|
database backend.
|
|
kube-prometheus-stack is used for monitoring.
|
|
Trivy scans for vulnerabilities.
|
|
|
|
The app consists of two parts: an import job for PostgreSQL
|
|
and the HA API deployment with the /success endpoint and a ReplicaSet of 2.
|
|
|
|
- Database: PostgresqlHA
|
|
- Import: gtfso-import
|
|
- API: gtfso-vbb
|
|
Monitoring: kube-prometheus-stack
|
|
Vulnerability Scanning: Trivy
|
|
|
|
## Clone repository
|
|
```
|
|
$ git clone https://github.com/bbusse/obch
|
|
$ cd obch
|
|
```
|
|
|
|
## Setup minikube and flux
|
|
### Optionally remove remnants of previous minikube clusters
|
|
```
|
|
$ minikube delete --all
|
|
|
|
# The above was not sufficient to setup a new cluster
|
|
# Additionally deleting the local minikube config folder helped:
|
|
$ rm -rf ~/.minikube
|
|
```
|
|
|
|
### Setup cluster and deploy app
|
|
run sh sources 'setup-cluster' and 'deploy'
|
|
> [!NOTE]
|
|
> A Personal Access Token (PAT) is needed for fluxcd
|
|
> to create and/or write to its state repository
|
|
```
|
|
$ ./run.sh
|
|
```
|
|
|
|
### Setup cluster
|
|
```
|
|
$ ./setup-cluster
|
|
```
|
|
|
|
## Deploy Service
|
|
```
|
|
$ ./deploy
|
|
```
|
|
### Stop cluster
|
|
```
|
|
$ minikube stop
|
|
```
|
|
|
|
## Expected Result
|
|
Probe APIs /success endpoint
|
|
```
|
|
$ kubectl port-forward --namespace app gtfso-vbb-8586b6cddc-f29bh 8080:5000 &
|
|
$ curl http://localhost:8080/success
|
|
Success!
|
|
```
|
|
Probe Metrics
|
|
```
|
|
$ curl http://localhost:8080/metrics
|
|
```
|
|
Show services
|
|
```
|
|
kubectl get service -A NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
|
app gtfso-vbb ClusterIP 10.99.63.60 <none> 80/TCP 31m
|
|
app pgsql-ha-postgresql-ha-pgpool ClusterIP 10.96.68.65 <none> 5432/TCP 3h23m
|
|
app pgsql-ha-postgresql-ha-postgresql ClusterIP 10.101.13.69 <none> 5432/TCP 3h23m
|
|
app pgsql-ha-postgresql-ha-postgresql-headless ClusterIP None <none> 5432/TCP 3h23m
|
|
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 3h31m
|
|
flux-system notification-controller ClusterIP 10.111.215.54 <none> 80/TCP 3h27m
|
|
flux-system source-controller ClusterIP 10.107.64.201 <none> 80/TCP 3h27m
|
|
flux-system webhook-receiver ClusterIP 10.109.54.68 <none> 80/TCP 3h27m
|
|
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 3h31m
|
|
kube-system prometheus-kube-prometheus-coredns ClusterIP None <none> 9153/TCP 3h10m
|
|
kube-system prometheus-kube-prometheus-kube-controller-manager ClusterIP None <none> 10257/TCP 3h10m
|
|
kube-system prometheus-kube-prometheus-kube-etcd ClusterIP None <none> 2381/TCP 3h10m
|
|
kube-system prometheus-kube-prometheus-kube-proxy ClusterIP None <none> 10249/TCP 3h10m
|
|
kube-system prometheus-kube-prometheus-kube-scheduler ClusterIP None <none> 10259/TCP 3h10m
|
|
kube-system prometheus-kube-prometheus-kubelet ClusterIP None <none> 10250/TCP,10255/TCP,4194/TCP 3h8m
|
|
monitoring alertmanager-operated ClusterIP None <none> 9093/TCP,9094/TCP,9094/UDP 3h8m
|
|
monitoring prometheus-grafana ClusterIP 10.105.202.74 <none> 80/TCP 3h10m
|
|
monitoring prometheus-kube-prometheus-alertmanager ClusterIP 10.110.246.137 <none> 9093/TCP,8080/TCP 3h10m
|
|
monitoring prometheus-kube-prometheus-operator ClusterIP 10.105.238.213 <none> 443/TCP 3h10m
|
|
monitoring prometheus-kube-prometheus-prometheus ClusterIP 10.102.52.55 <none> 9090/TCP,8080/TCP 3h10m
|
|
monitoring prometheus-kube-state-metrics ClusterIP 10.106.92.254 <none> 8080/TCP 3h10m
|
|
monitoring prometheus-operated ClusterIP None <none> 9090/TCP 3h8m
|
|
monitoring prometheus-prometheus-node-exporter ClusterIP 10.109.107.194 <none> 9100/TCP 3h10m
|
|
security-scan trivy-trivy-operator ClusterIP None <none> 80/TCP 3h6m
|
|
```
|
|
|
|
## TODOs / Notes
|
|
gtfso-import needs the database secret for import
|
|
gtfso-import: Retry job until success
|
|
Add gtfs-vbb as target to prometheus
|
|
Change default credentials for the kube-prometheus-stack
|
|
Define strategy for version updates
|
|
Consume and act on Trivy results
|
|
Consider SOPS / Vault for secret management
|
|
Terraform has minikube and flux providers
|
|
|
|
For a pure GitOps experience the path containing the yaml manifests
|
|
created by 'flux create [..] --export' would have to be added to the fluxcd
|
|
repository
|
|
|
|
## Resources
|
|
[Flux bootstrap for Gitea](https://fluxcd.io/flux/installation/bootstrap/gitea/)
|
|
[Flux github action](https://fluxcd.io/flux/flux-gh-action/)
|
|
[Flux Monitoring](https://github.com/fluxcd/flux2-monitoring-example)
|
|
[Flux Monotioring custom metrics](https://fluxcd.io/flux/monitoring/custom-metrics/)
|
|
[Terraform Flux Provider](https://github.com/fluxcd/terraform-provider-flux)
|
|
[Mozilla SOPS](https://fluxcd.io/flux/guides/mozilla-sops/)
|
|
[bitnami PostgreSQL HA Helm](https://bitnami.com/stack/postgresql-ha/helm)
|
|
[Trivy](https://github.com/aquasecurity/trivy)
|