This tutorial shows how to set up a fully working kratos server using our charm, MicroK8s and Juju

Set things up

Bootstrap a microk8s controller using juju 3.4 and create a new Juju model:

$ juju add-model kratos
Added 'kratos' model on microk8s/localhost with credential 'microk8s' for user 'admin'

See more: Set up your test environment automatically

Watch the kratos charm transform the way to deploy, configure, integrate, and manage kratos on any Kubernetes cloud

kratos requires a way to persist data, in the case of our charm we enforce the usage of a postgreSQL database

As mentioned, we need a persistent way to store kratos data, we are going to be using the postgresql-k8s charm

$ juju deploy postgresql-k8s --channel 14/stable --trust postgresql
Deployed "postgresql" from charm-hub charm "postgresql-k8s", revision 193 in channel 14/stable on ubuntu@22.04/stable

Once that is done (no need to wait for it to be ready) we can proceed in deploying kratos and integrate the 2 charms

$ juju deploy kratos --channel 0.2/stable
Deployed "kratos" from charm-hub charm "kratos", revision 399 in channel 0.2/stable on ubuntu@22.04/stable

Integrate with PostgreSQL

$ juju integrate postgresql:database kratos

after some time we should be able to inspect that all has been successfully deployed and connected

$ juju status --relations                           

Model   Controller          Cloud/Region        Version  SLA          Timestamp
kratos  microk8s-localhost  microk8s/localhost  3.4.2    unsupported  09:45:28+01:00

App          Version  Status  Scale  Charm           Channel        Rev  Address         Exposed  Message
kratos       v1.1.0   active      1  kratos          0.2/stable     399  10.152.183.42   no       
postgresql   14.10    active      1  postgresql-k8s  14/stable      193  10.152.183.100  no       Primary

Unit            Workload  Agent  Address       Ports  Message
kratos/0*       active    idle   10.1.245.173         
postgresql/0*   active    idle   10.1.245.146         Primary

Integration provider       Requirer                   Interface          Type     Message
kratos:kratos-peers        kratos:kratos-peers        kratos-peers       peer     
postgresql:database        kratos:pg-database         postgresql_client  regular  
postgresql:database-peers  postgresql:database-peers  postgresql_peers   peer     
postgresql:restart         postgresql:restart         rolling_op         peer     
postgresql:upgrade         postgresql:upgrade         upgrade            peer     

Grafana, Loki, and Prometheus

The kratos operator integrates with Canonical Observability Stack (COS) bundle. It comes with a Grafana dashboard as well as Loki and Prometheus alert rules for basic common scenarios. To integrate with the COS bundle, after you deploy it, you can run:

$ juju integrate kratos:grafana-dashboard grafana:grafana-dashboard
$ juju integrate kratos:metrics-endpoint prometheus:metrics-endpoint
$ juju integrate loki:logging kratos:log-proxy

Tear things down

To tear things down, remove the entire kratos model in juju with

juju destroy-model kratos