feat(bot): ✨ Migrate from Citus to PostgreSQL.

README.md

@@ -167,47 +167,14 @@ kubectl apply -f k8s/secrets.yml
 If you see a ConfigMap and a Secret being created, that means you've successfully applied the
 changes.
 
-#### Setting Up Redis
+#### Setting Up Redis and PostgreSQL
 
 Now, you can initialize Redis. This step is pretty straightforward and you can forget about it
 later.
 
 ```sh
 kubectl apply -f k8s/redis.yml
-```
-
-#### Setting Up Citus Database
-
-This step requires some updates in the `k8s/citus.yml` file. Open the file and make sure that the
-default amount of replicas fits your needs. At least one is needed.
-
-```sh
-kubectl apply -f k8s/citus.yml
-```
-
-Once all the nodes are up and running, you have to connect them. The node `citus-0` is always used
-as the coordinator node. Run the following command to set the coordinator host:
-
-```sh
-kubectl exec citus-0 -- psql -U payphone payphone -c "SELECT citus_set_coordinator_host('citus-0.citus-headless.default.svc.cluster.local', 5432);"
-```
-
-Once that command was run, you need to add the rest of the nodes to the cluster. To do that, run
-the following command replacing `<node-index>` with the index of the node you're adding, once per
-node.
-
-```sh
-kubectl exec citus-0 -- psql -U payphone payphone -c "SELECT * from citus_add_node('citus-<node-index>.citus-headless.default.svc.cluster.local', 5432);"
-```
-
-For example, if you had 3 replicas in total, you'd run the command 2 times, once for node 1 and
-once for node 2 (node 0 is the coordinator, so you don't have to add it).
-
-As an optional step, you can check that the nodes were successfully connected running the following
-command, which will show all the nodes connected:
-
-```sh
-kubectl exec citus-0 -- psql -U payphone payphone -c "SELECT * FROM citus_get_active_worker_nodes();"
+kubectl apply -f k8s/psql.yml
 ```
 
 #### Setting Up Payphone

k8s/psql.yml

@@ -1,49 +1,35 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: citus-loadbalancer
+  name: postgresql
 spec:
-  type: LoadBalancer
+  type: ClusterIP  # Internal access only
   selector:
-    app: citus
+    app: postgresql
   ports:
     - protocol: TCP
       port: 5432
       targetPort: 5432
 
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: citus-headless
-spec:
-  selector:
-    app: citus
-  ports:
-    - protocol: TCP
-      port: 5432
-      targetPort: 5432
-  clusterIP: None  # Headless service for direct pod access
-
 ---
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
-  name: citus
+  name: postgresql
 spec:
-  serviceName: citus-headless
-  replicas: 3  # Set the desired number of replicas
+  serviceName: postgresql
+  replicas: 1  # Single-node PostgreSQL
   selector:
     matchLabels:
-      app: citus
+      app: postgresql
   template:
     metadata:
       labels:
-        app: citus
+        app: postgresql
     spec:
       containers:
-        - name: citus
-          image: citusdata/citus:latest
+        - name: postgres
+          image: postgres:latest  # Standard PostgreSQL image
           env:
             - name: POSTGRES_DB
               value: "payphone"
@@ -54,15 +40,15 @@ spec:
           ports:
             - containerPort: 5432
           volumeMounts:
-            - name: citus-storage
+            - name: postgres-storage
               mountPath: /var/lib/postgresql/data
               subPath: postgres
   volumeClaimTemplates:
     - metadata:
-        name: citus-storage
+        name: postgres-storage
       spec:
         accessModes: [ "ReadWriteOnce" ]
-        storageClassName: "openebs-jiva-csi-default"  # Update based on your storage class
+        storageClassName: openebs-hostpath  # Your storage class
         resources:
           requests:
-            storage: 20Gi  # Size for each pod's storage
+            storage: 20Gi  # Adjust storage as needed

payphone/core/config.py

@@ -17,7 +17,7 @@ TORTOISE_ORM = {
         "default": {
             "engine": "tortoise.backends.asyncpg",
             "credentials": {
-                "host": "localhost" if IS_DEBUG else "citus-loadbalancer.default.svc.cluster.local",
+                "host": "localhost" if IS_DEBUG else "postgresql",
                 "port": "5432",
                 "user": "payphone",
                 "password": "payphone",