*: specify clusterName and bump tsdb chart

Signed-off-by: Paweł Krupa (paulfantom) <pawel@krupa.net.pl>

Author: paulfantom

chart/Chart.yaml

@@ -12,13 +12,13 @@ keywords:
   - monitoring
   - tracing
   - opentelemetry
-version: 19.0.0
+version: 20.0.0
 # TODO(paulfantom): Enable after kubernetes 1.22 reaches EOL (2022-10-28)
 # kubeVersion: ">= 1.23.0"
 dependencies:
   - name: timescaledb-single
     condition: timescaledb-single.enabled
-    version: 0.24.1
+    version: 0.27.2
     repository: https://charts.timescale.com
   - name: promscale
     condition: promscale.enabled

chart/scripts/password-initializer.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+: "${NAMESPACE:="default"}"
+: "${DB_SECRET_NAME:="tobs-credentials"}"
+: "${PROMSCALE_SECRET_NAME:="tobs-promscale-connection"}"
+
+while ! kubectl get secret "${DB_SECRET_NAME}" --namespace "${NAMESPACE}"; do
+    echo "Waiting for ${DB_SECRET_NAME} secret."
+    sleep 1
+done
+PASS="$(kubectl get secret --namespace "${NAMESPACE}" "${DB_SECRET_NAME}" -o json | jq -r '.data["PATRONI_SUPERUSER_PASSWORD"]')"
+
+kubectl get secret --namespace "${NAMESPACE}" "${PROMSCALE_SECRET_NAME}" -o json | jq --arg PASS "$PASS" '.data["PROMSCALE_DB_PASSWORD"]=$PASS' | kubectl apply -f -

chart/templates/connection-secret-job.yaml

@@ -68,7 +68,7 @@ metadata:
     heritage: {{ .Release.Service }}
 stringData:
   PROMSCALE_DB_PORT: "5432"
-  PROMSCALE_DB_HOST: "{{ .Release.Name }}.{{ .Release.Namespace }}.svc"
+  PROMSCALE_DB_HOST: "{{ tpl $db.clusterName . }}.{{ .Release.Namespace }}.svc"
   PROMSCALE_DB_NAME: "postgres"
   PROMSCALE_DB_USER: "postgres"
   PROMSCALE_DB_SSL_MODE: "require"
@@ -86,13 +86,7 @@ metadata:
     heritage: {{ .Release.Service }}
 data:
   password-initializer.sh: |
-    #!/bin/bash
-    while ! kubectl get secret {{ .Release.Name }}-credentials --namespace {{ template "tobs.namespace" . }}; do
-      echo "Waiting for {{ .Release.Name }}-credentials secret."
-      sleep 1
-    done
-    PASS=$(kubectl get secret --namespace {{ template "tobs.namespace" . }} {{ .Release.Name }}-credentials -o json | jq -r '.data["PATRONI_SUPERUSER_PASSWORD"]')
-    kubectl get secret --namespace {{ template "tobs.namespace" . }} {{ .Values.promscale.connectionSecretName }} -o json | jq --arg PASS "$PASS" '.data["PROMSCALE_DB_PASSWORD"]=$PASS' | kubectl apply -f -
+    {{- $.Files.Get "scripts/password-initializer.sh" | nindent 4 }}
 ---
 apiVersion: batch/v1
 kind: Job
@@ -111,6 +105,15 @@ spec:
       - name: copier
         image: bitnami/kubectl:latest
         command: [ '/scripts/password-initializer.sh' ]
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: DB_SECRET_NAME
+          value: {{ tpl $db.clusterName . }}-credentials
+        - name: PROMSCALE_SECRET_NAME
+          value: {{ .Values.promscale.connectionSecretName }}
         volumeMounts:
         - name: promscale-initializer
           mountPath: /scripts

chart/values.yaml

@@ -15,6 +15,8 @@ timescaledb-single:
     repository: timescale/timescaledb-ha
     tag: pg14.5-ts2.8.1-p2
     pullPolicy: IfNotPresent
+
+  clusterName: "{{ .Release.Name }}-tsdb"
   env:
     - name: TSTUNE_PROFILE
       value: promscale

docs/upgrades.md

@@ -1,13 +1,27 @@
-# Upgrading tobs using helm (without tobs CLI)
-
-The following steps are necessary if using helm without the tobs CLI. The tobs CLI will handle these upgrade tasks automatically for you.
+# Upgrading tobs
 
 Firstly upgrade the helm repo to pull the latest available tobs helm chart. We always recommend upgrading to the [latest](https://github.com/timescale/tobs/releases/latest) tobs stack available.
 
 ```shell
 helm repo update
 ```
 
+## Upgrading from 19.x to 20.x
+
+Version 20 of tobs is specifying `clusterName` for timescaledb resources. This is required to make seamless connection
+string propagation work out of the box with version 0.27+ of timescaledb helm chart. Since tobs is now specifying
+`clusterName` in values file, we took this opportunity to also change the default `clusterName` to `{{ .Release.Name }}-tsdb`.
+This allows easier operations on the installed cluster as the objects are clearly associated with particular component.
+
+Sadly this is a breaking change for users who are using tobs with version 0.26 or lower of timescaledb helm chart.
+If you are using tobs with version 0.26 or lower of timescaledb helm chart and you don't want to manually migrate
+your timescaledb resources, you can specify the following option in your `values.yaml` file.
+
+```yaml
+timescaledb-single:
+  clusterName: "{{ .Release.Name }}"
+```
+
 ## Upgrading from 18.x to 19.x
 
 There is a breaking change in [kube-prometheus-stack](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack#from-41x-to-42x).