Switch preset to extra-small by default

This PR uses extra-small preset by default.
The deployment strategy `SimpleScalable` is deprecated and only available with presets `legacy` and `none`.
Every other preset uses deployment strategy `Distributed`

Author: Debakel Orakel

class/defaults.yml

@@ -32,7 +32,7 @@ parameters:
         registry: ghcr.io
         repository: jkroepke/access-log-exporter
 
-    preset: legacy
+    preset: extra-small
 
     components:
       # Read Path

class/loki.yml

@@ -30,6 +30,7 @@ parameters:
         output_path: ${_instance}/10_helm_loki
         helm_values_files:
           - ${_base_directory}/helmcharts/loki/${loki:charts:loki:version}/${loki:preset}.yaml
+          - ${_base_directory}/helmcharts/loki/${loki:charts:loki:version}/${_instance}-components.yaml
           - ${_base_directory}/helmcharts/loki/${loki:charts:loki:version}/${_instance}-configs.yaml
           - ${_base_directory}/helmcharts/loki/${loki:charts:loki:version}/${_instance}-overrides.yaml
         helm_params:

component/helm_values.jsonnet

@@ -41,8 +41,6 @@ local components = com.makeMergeable({
   } + com.makeMergeable(params.components.indexGateway),
   // Ingress Configuration
   gateway: {
-    [if params.components.gateway.enabled then 'enabledNonEnterprise']: params.components.gateway.enabled,
-    extraEnvFrom: [ { secretRef: { name: '%s-bucket-secret' % inv.parameters._instance } } ],
     extraArgs: [ '-config.expand-env=true' ],
     nodeSelector: std.get(params.components.gateway, 'nodeSelector', globalConfig.nodeSelector),
   } + com.makeMergeable(params.components.gateway),
@@ -204,6 +202,7 @@ local hardRestrictions = com.makeMergeable({
 });
 
 {
+  ['%s-components' % inv.parameters._instance]: components + caches + experimental,
   ['%s-configs' % inv.parameters._instance]: openshift + images + global + loki + ingress,
   ['%s-overrides' % inv.parameters._instance]: params.helm_values + hardRestrictions,
 }

docs/modules/ROOT/pages/how-tos/upgrade-loki-v0-v1.adoc

@@ -0,0 +1,65 @@
+= Upgrade component version v0 to v1
+
+Version 1.x is a major overhaul of the configuration parameters of the component,
+https://github.com/projectsyn/component-loki/releases/tag/v1.0.0[see Release Notes] for more details.
+
+The component has lots of options to configure each part of the Loki installation.
+Please have a look at the xref:references/parameters.adoc[parameters documentation] for reference.
+
+[IMPORTANT]
+====
+This component will no longer support Helm charts from grafana/loki.
+Instead it uses Helm charts from grafana-community > v17.x of Loki.
+====
+
+
+== Explanation of configuration changes
+
+=== Migrate to Deployment Mode `Distributed`
+
+[IMPORTANT]
+====
+Prior version of this component used the deployment mode `SimpleScalable`, see https://grafana.com/docs/loki/latest/get-started/deployment-modes/#simple-scalable[Loki Documentation].
+This mode is deprecated and will be removed with Loki v4.
+Only the preset `legacy` will support `SimpleScalable`, but it is strongly adviced to switch away from `SimpleScalable` and `legacy`.
+====
+
+==== Step 1
+
+Deploy v1.x of this component with the following parameters:
+
+[source,yaml]
+----
+preset: legacy <1>
+helm_values:
+  deploymentMode: SimpleScalable<->Distributed <2>
+----
+<1> Uses `legacy` preset for component configuration.
+<2> Prepares for the transition to `Distributed`.
+
+==== Step 2
+
+Remove the parameters from "Step 1" and deploy again.
+
+=== New Default Resource Requests
+
+[IMPORTANT]
+====
+This component changes its default resource requests and limits, please check the output of your catalog compilation and adjust if needed.
+See xref:references/parameters.adoc#_components[components] and xref:references/parameters.adoc#_caches[caches] to adjust your settings.
+====
+
+This component supports the following presets:
+
+* `none`: Use the Helm charts defaults.
+* `legacy`: Component defaults for migrating to v1.
+* `extra-small`: Component defaults for small production deployments (default).
+
+=== legacy `globalNodeSelector`
+
+The values for the global node selector has moved to `global.nodeSelector`.
+
+[TIP]
+====
+This change is backward compatible, but migrating the values to the new structure is recommended.
+====

docs/modules/ROOT/partials/nav.adoc

@@ -1,2 +1,3 @@
 * xref:index.adoc[Home]
 * xref:references/parameters.adoc[Parameters]
+* xref:how-tos/upgrade-loki-v0-v1.adoc[]

tests/golden/defaults/loki/loki/10_helm_loki/loki/templates/backend/query-scheduler-discovery.yaml

@@ -2,17 +2,15 @@ apiVersion: policy/v1
 kind: PodDisruptionBudget
 metadata:
   labels:
-    app.kubernetes.io/component: read
+    app.kubernetes.io/component: memcached-chunks-cache
     app.kubernetes.io/instance: loki
     app.kubernetes.io/name: loki
-    app.kubernetes.io/version: 3.7.2
-    helm.sh/chart: loki-17.4.11
-  name: loki-read
+  name: loki-chunks-cache
   namespace: syn-loki
 spec:
   maxUnavailable: 1
   selector:
     matchLabels:
-      app.kubernetes.io/component: read
+      app.kubernetes.io/component: memcached-chunks-cache
       app.kubernetes.io/instance: loki
       app.kubernetes.io/name: loki

tests/golden/defaults/loki/loki/10_helm_loki/loki/templates/backend/workload.yaml

@@ -13,7 +13,7 @@ metadata:
   namespace: syn-loki
 spec:
   podManagementPolicy: Parallel
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app.kubernetes.io/component: memcached-chunks-cache
@@ -66,10 +66,10 @@ spec:
             timeoutSeconds: 3
           resources:
             limits:
-              memory: 9830Mi
+              memory: 4Gi
             requests:
               cpu: 500m
-              memory: 9830Mi
+              memory: 4Gi
           securityContext:
             allowPrivilegeEscalation: false
             capabilities: